Re: KR> Progress !

[Robin Macdonald via KRnet]

Larry,

Just a suggestion if you are going to balance the shaft
I would do the pistons & rods as well,  a quick check to see how good they 
are is to weigh all the pistons
they should be within a few grams,  & weigh the rods they should be the 
same, within a few grams

If the rods are different they may need end for end balancing,

Good luck

Robin

-Original Message- 
From: Larry Flesner via KRnet

Sent: Tuesday, January 24, 2017 12:07 PM
To: krnet@list.krnet.org
Cc: Larry Flesner
Subject: KR> Progress !



I was unable to get my  5 inch prop extension off the crank with


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KR> New Engine

[Robin Macdonald]

There is the possability of a new engine, it was developed for the Jetpack it 
runs the 2 fans for lift for the jetpack.
Liquid cooled & light. 

Have a look at   http://martinjetpack.com/

Robin 

Christchurch

NZ 

The home of  5 earthquakes & 10,000 aftershocks in 15 mths 

KR> Let me just say....

[Robin Macdonald]

I'm not sure club is the right expression I think it should be 

Welcome to the  " ZOO "

Good luck.

Robin.

> newer builders appreciate more than you will ever know.

Welcome to the club!

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KR> Glass over Dynel

[Robin Macdonald]

Hi Guys

Just curious, I see someone is laminating glass over dynel.

Personally I would not change material, there may be different characteristics 
that you don't know about or understand, until they part company.

Anyone else had comments. 

Robin.

Chch. NZ

>From the place of 8000 aftershocks in 12mths.   

KR> torque tube control of ailerons

[Robin Macdonald]

I got drawings etc from Peter Drake in the UK.

Robin.

Shake city we have now had something like 8500 aftershocks since Sept. 2010


- Original Message - 
From: "Craig Williams" 
To: 
Sent: Sunday, July 24, 2011 4:48 AM
Subject: KR> torque tube control of ailerons


Good morning fellow KR'rs


Spent some time yesterday designing my control systems.  Ailerons will be 
torque tubes with a u-joint connection at the rear WAF.  Looked in the 
archives and found very little on anyone using torque tubes.  Any info 
(links) on KR or any other aircraft applications would be greatly 
appreciated.  Line drawings are here: http://www.kr2seafury.com/4.html Once 
I start building them I will have a better idea of location and size of the 
components.

Headed to OSH on the 29th.

Craig
www.kr2seafury.com

KR> Clearance between leg & foam/glass

[Robin Macdonald]

Hi Guys,

I am donig the bottom of the inner wings. I have a trike undercarrage with the 
legs on the rear of the front spar. Do I leave any clearance between the leg & 
the foam/fibreglass, is there any flexing & if so how much clearance do I 
leave. Or what have others done.

Mnay thanks 

Robin.

N.Z. 

KR> Peel Ply

[Robin Macdonald]

One thing I tried & has been successful, use the peelply in places where you 
are going to have an additional layer of glass, don't wait till the resin 
has gone hard before you remove the peel ply.

In the places where you are not going to have any more glass, squeegee off 
the excess resin then sprinkle (or you can put as much as you like)  the 
area with microballs then when the resin has gone off just brush the 
microballs.

This helps suck up any excess resin & helps fill any weave in the glass.

75% done 90% to go.

>From the town that has just gone through our 2nd earthquake in 6mths.

But our hearts go out to those in Japan.

Chch

N.Z.

- Original Message - 
From: "Patrick and Robin Russo" 
To: "KRnet" 
Sent: Friday, March 18, 2011 8:42 AM
Subject: KR> Peel Ply

KR> Fuel filler and caps

[Robin Macdonald]

Try the boating industry, they have all sorts of shapes & sizes.

Robin. 

Earthquake City 

NZ
- Original Message - 
From: 
To: 
Sent: Wednesday, March 02, 2011 11:09 AM
Subject: KR> Fuel filler and caps

KR> Kr Robin Macdonald

[Robin Macdonald]

Hi to KRnet.

We survived the earthquake in one piece, the house is ok no damage. but we 
have no water, no power, & phone only now & a gain,  The power has only got 
as far as over the back fence & my neighbour was kind enough to let me plug 
in to his supply, hopefully we will get power today one week after. The town 
is a mess you have probably seen more on TV than I have. We have been 
isolated the rock cliffs are busy comming dowm & the road has been closed, 
hopefully they will open today.

Many thanks for all those who have sent emails.

Robin.
- Original Message - 
From: "Peter Drake" <p...@kingsland.uk.com>
To: "KRnet" <kr...@mylist.net>
Sent: Saturday, February 26, 2011 10:32 PM
Subject: KR> Kr Robin Macdonald


Has any one heard anything from KR builder Robin Macdonald in New Zealand.
He lives very near the epicentre of the earthquake. I emailed him soon after 
it happened but haven't heard anything.

My KR posts are not getting acknowledged can someone let me know if this is 
getting through.

Thanks

Peter Drake
Hereford UK

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KR> Wood

[Robin Macdonald]

Hi Guys,

Have a look at the FAA  AC 43-13-16  gives a lot of good information on wood. 
glues, fastners etc all sorts of material etc. 

Robin.  

KR> Welding and welder selection

[Robin Macdonald]

I have been reading about various people's idea's of the different welding 
styles & equiptment.

My suggestion is before you even start go to your local training 
estabilshment, & learn about all the various bits pieces & have a go . By 
the time you have purchased your equiptment etc etc the cost will be a lot 
more than just buying a welder . Welding hoods flux & rods, gas etc etc all 
the different rods for what ever you are welding etc etc. Then don't forget 
to be able to weld properly it is a process you have to be at all the time.

When your are flying is not the time to wonder if your welding will hold 
together.  It may be better to pay a few extra dollars & have it done 
profesionally & you will have peice of mind.

Just my penny worth .

Fly safe.

Robin

NZ. 

KR> Outboard fuel tanks

[Robin Macdonald]

Charles,

Your comment about the outer wing being the least stressed point on the 
wing, the reason that is because there is no weight there & the aerofoil is 
not holding up much of the a/c. If you put 30 lbs of fuel out there the 
stress could change from the least stressed to the most stressed. If you did 
a heavy landing with 30lbs of fuel at the win tip it may  turn into a 
disaster.  Be careful.

Robin.

- Original Message - 
From: "Charles Smith" 
To: 
Sent: Tuesday, October 26, 2010 8:42 AM
Subject: KR> Outboard fuel tanks


Watching this discussion of fuel tanks closely.  I have built a Dragonfly 
(hasn't flown yet) and found the construction technique to be fast and easy 
(you have to be fast when applying epoxy).  However, I want to start over 
with a conventional design that fits the requirements of E-LSA.  I would 
like to use the same construction techniques used in the D-fly but do not 
know what the parameters or results of putting a hollow space inside of a 
foam core wing would be but think it might be doable as wing tip tanks, just 
hollow out the outermost 'x' inches of wing and use it as the tank, the 
least stress place in the wing. I am looking at the KR design as the basis 
for this plane and soaking up any ideas I can run across to help me out. 

KR> WAF spacers

[Robin Macdonald]

I agree with you the spacer & one single bolt is stronger than the two 
bolts.

The only problem is to start with this when you fit the WAFs to the spars, 
if the WAFs are slightly out of alignment you have a hellve job to get the 
bolt in without damaging the bolt or the WAF's .  As there has never been a 
problem with the original set up why go looking for trouble.

I have this problem my KR was built in the early 80's & had the single bolt. 
When I removed the bolt I was a bit shocked at the condition of the bolt, 
the bolt needed to be incouraged to go in the hole, I think someone had used 
a hammer.   The WAF's are slightly out of alignment I feel there was too 
much stress on the WAF & the spar to get the bolt through both WAF's. Both 
front & back spars are the same. I want to go back to the multi bolts 
system, I will feel better with good bolts & no stress raisers.

As Mark says make sure the thread of the bolt is out of the sheer load on 
the WAF.


Robin.

NZ. 

KR> KR2 ARTICLE-KITPLANES NOV 2010

[Robin Macdonald]

Pete,

I have the dwgs from the local CAD (Feds)  that were produced in the early 
80's about fitting of the spacer & single bolt & I think it originated in 
OZ. Not sure how I will get on with mine, we will see.

75% done 50% to go


Robin .

NZ.


  I think there is a change to the WAF system where a tube needs to be
fitted between the fittings and a single bolt is passed through.
I could be wrong but one of the guys that have actually completed one
here in Oz should chip in.
Cheers.
Peter Bancks.
Ballina, Oz.

On 1/10/2010 03:53, Mark Langford wrote:
> The Aussies have dictated a couple of changes to KRs built and flown 
> there, but
> "improving" the WAFs isn't one of them, as far as I know.

KR> Glassing wings

[Robin Macdonald]

I am in the process of sanding my wings & laying up the glass. 

I read the manual to be sure of the process. 10.16 in the manual. Apply one BID 
layup aft of the main spar,with good contact to both bare wood spars. The area 
forward of the main spar will require two BID layups. Overlap the aft area 
layup at least 2" and extend the layup around the leading edge approximately 3" 
above chord line. You will have approximately 6" of leading edge three on each 
side of chord line, covered with 4 layers.

My interpretation of this is to layup from the front of the front spar to the 
trailing edge of the wing with one layer of BID then layup from 2" rear of the 
front spar to around the leading edge with 2 layers of BID.

This would give 3 layers over the front spar. If this is correct what is the 
reasoning behind this or what did others do.

Many thanks for your reply

Robin,

NZ 

KR> The Gathering

[Robin Macdonald]

To all those going to The Gathering good luck & take care.

Robin 

NZ

KR> Wing Tank Construction and Retrofit into the Black Bird's wings

[Robin Macdonald]

- Original Message - 
From: "Dan Heath" 
To: "'KRnet'" 
Sent: Sunday, August 08, 2010 11:59 PM
Subject: KR> Wing Tank Construction and Retrofit into the Black Bird's wings



I made aluminium tanks & used yacht fittings for the tank filler. The vents 
come out the bottom of the wings in case I end up upside down.

Robin

N.Z.

KR> canopy covering

[Robin Macdonald]

Try heating slightly with a hair drier, carefully. This is how I get the 
protective coating off acrylic sheet (Paper, Plactic what ever)

Robin

NZ
- Original Message - 
From: "WARRON GRAY" 
To: 
Sent: Tuesday, May 04, 2010 2:24 PM
Subject: KR> canopy covering


Hi guys I have a "S" and was wondering what is a good method to get the 
coating off the canopy from the supplier?. Been sitting for a while on the 
plane and now it is time to remove it. Thanks "WG447"
___

KR> west system epoxy

[Robin Macdonald]

West Pumps,

To clean, the 105 resin pump wash in Acetone. The 205 hardner pump wash in 
water.

If Resin has crystalised sit container in warm water. If not sucessful bin 
it.

As Gavin suggested always do a test piece

Robin

NZ.

Subject: Re: KR> west system epoxy


David Swanson asked

How can I tell if my west system epoxy is any good  anymore?  It has the
pumps on it since it was first opened.

please see other KRnet info at http://www.krnet.org/info.html 

KR> Irrigation pipes for fuel tanks.

[Robin Macdonald]

I looked at using the irrigation pipes for tanks, but changed my mind. 
Cost, not sure if sealing my be a problem, weight, length of tube & fuel 
sloshing a round etc. etc so made up aluminium tanks approx 8gals in each 
outer wing. plus header tank 4 gals. Got the ideas from someone else on the 
net.

Just my 2 c worth

Robin

NZ.

70% built 50% to go.
- Original Message - 
From: "DAN INA GLANDT" 
To: 
Sent: Saturday, April 24, 2010 4:21 PM
Subject: KR> Irrigation pipes for fuel tanks.



please see other KRnet info at http://www.krnet.org/info.html 

KR> KR2S Flight Simulator

[Robin Macdonald]

Ask Dan Freeman.  I have a KR2 from Dan on X - Plane, ver8  Magic. 

Robin 

NZ. 
- Original Message - 
From: "mark wood" 
To: "KRnet" 
Sent: Sunday, March 21, 2010 3:41 PM
Subject: Re: KR> KR2S Flight Simulator


Have any you guys done anything with X Planes. With it's blade  
element modeling and inertial modeling, it has been used in many  
aircraft development efforts. While I haven't yet modeled a KR, I  
have done other planes and it is a fairly good representative sim. I  
know that some large scale operations such as Sino Swerringen   
have used it. I know a couple of the flight test engineers from there  
and know first hand.  I've modeled a couple of planes a bit larger  
than the KR2 and have been planning to do one for the KR. My ultimate  
goal is a true 200 TAS cruise airplane for two. Having said that,  
most of the designs I've been doing have needed 160-200Hp to  
realistcally achieve this.


MArk


On Mar 20, 2010, at 8:13 PM, Charles Burkholder wrote:

> Yea I downloaded the KR-2 into my FS9 but deleted it immediatly  
> after flying
> it a bit. Awful
> Charles Burkholder
>
>
>
>
>
>
> The KR-1 works fine on my computer, however the KR-2 only goes 80KIAS.
>
> Kris Leirfallom
> CFI
> KR-2 Builder
>
>
>
> ___
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KR> Glueing Foam

[Robin Macdonald]

Hi guys 

Many thanks for your replies. Especially the reply from Larry.  I was a bit 
concerned that the adhesion was important, as long as the foam stays in place 
long enough to sand & glass  & is easy to sand. The most important is the the 
adhesion of the glass to spars.

Many thanks to all the replies.

Robin.  

KR> Glueing Foam

[Robin Macdonald]

Guys, 

I am in the process of glueing the foam to the spars, wing leading & trailing 
edge, tail feathers, etc. I have made the main wing planks in a sandwich & they 
are floxed in placed. Now I want to do the leading & trailing edge & the tail 
feathers. 

What is the preferred process to attach the foam to the spares etc. Some have 
used resin, & I understand some have used a sprayon 3M product.  If resin is a 
preferred process what mix have you used. straight resin, resin & micro,  or 
what do you suggest.

Much apprecaited for your reply 

Robin

NZ 

KR> Fw: [RANSflyers] Rans S-6 Grove Gear

[Robin Macdonald]

Hi guys,

This might be worth a look for someone looking for undercarriage.

Robin.
- Original Message - 
From: bneesan 
To: ransfly...@yahoogroups.com 
Sent: Wednesday, December 02, 2009 6:57 PM
Subject: [RANSflyers] Rans S-6 Grove Gear



I have converted my S-6 back to a tri-gear. I no longer need the Grove gear. 
This gear is for a taildragger setup. It is NOT drilled for internal brake 
fluid. This custom gear was @$1400. I have the main gear and the mounting 
clamps / brackets. You will need to come up with a mounting point on the frame. 
I have mounting points welded into my frame. I can send photos of the install 
if interested. The price is $750 + shipping. Thanks, Bob.




__,_._,___

KR> HAPI Bushes

[Robin Macdonald]

Hi Guy's 

I have a HAPI engine & need a set of rubber mount bushes. Any idea where I can 
beg borrow or steal a set. ( Apparently Continental bushes)  

Many thanks 

Robin 
 N.Z.

KR> Radio

[Robin Macdonald]

Hi guys,

Slowly getting on with my KR, at present doing wings & tanks. 

I am looking at radio's our $ is high so thought it might be a good time to 
buy. 

I have been looking at the "Microair Model M760" & now someone has suggested 
the "Flightline FL760",  has anyone any thoughts or had experience with this 
unit.

Many thanks 

Robin 

N.Z.

70% done 95% to go 

KR> I Need Some Advice From Flying KR'ers

[Robin Macdonald]

Dwight,

Before you go down the track of what to build etc, you don't give your
experience of flying.   If the answer is none you have to ask is flying for
me & can I get a certificate, go get a few flying lessons & get your
medical, then if you decide to carry on, Get to the next   "Gathering"  at
Mt Vernon. There you will get all your answers on the KR & watch 2 jokers in 
KR's at
about 20 ft off the deck at about 200mph peal off in to the distance.

Then you stand there & think I wonder how long before I can join them, I
better get my A into G.

Good luck

Thanks for the memories of "The Gathering 2008"

Robin

N.Z.

- Original Message - 
From: "Dwight Hapeman" 
To: 
Sent: Monday, June 01, 2009 6:42 AM
Subject: KR> I Need Some Advice From Flying KR'ers


Hello KR'ers,

Here is my situation - Since I am 5' 7" tall, I don't believe that
modification of the cockpit will be necessary for either plane. I am not
really interested, nor do I see the need to make modifications to a well
designed aircraft.  I would definitely enjoy building with wood & composite
much more than with metal and rivets. I have no doubts that I have the
ability and skills to complete either aircraft. Also, I should mention that
I do not yet have a pilot certificate.  since this will be a recreational
aircraft and I don't foresee the need to fly at night or IFR, I was planning
on getting a Sport Pilot certificate.  I realize that the KR2S would require
a Private Pilot certificate, which costs more and takes more training time
to get.

Dwight Hapeman

KR> Aileron Travel.

[Robin Macdonald]

Hi Guys,

I'm tyring to sort out aileron travel. In the construction manual there is a 
dwg of the aileron bell crank. 

Also in the manual it gives a list of control system travel.  The travel of the 
aileron is supposed to be + 20 -10  but there seems to be a conflict between 
the limits & what you can achieve. 

Also in an early newsletter # 22 it gives a limit of 1 1/2" up & 3/4" down 
measured at the inboard end of the aileron. This measurement gives you approx 
1/2 of what the manual states. This is approx what the bell crank will give 
you, not the limits given in the manual.  

What have others found & how have they achieved it.  

Many thanks 

Robin.

KR> Miced

[Robin Macdonald]

I know how a KR2 wing is miced.  I bought a KR2 that had been built in the 80's 
& decided to redo foam & glass on the wings someone had added an other layer of 
glass & I think they used polyester over epoxy . When I opened up one wing 
there were 2 very desicated mice when the wing was built they must have living 
there & when the wing was closed up that was the end. Must have been there for 
20 years. 

Robin.  

KR> Gas Struts

[Robin Macdonald]

Hi Guys,

I'm after some help with gas struts.

I want to use gas struts for the canopy, I have 2 but the pressure is too high. 
Apparenty you can increase the pressure but most struts you cannot reduce the 
pressure. With the struts that you can reduce the presure there is a valve in 
one end but these do not have the valve. 

I am thinking of drilling  hole & welding in a valve from a vehicle tube has 
anyone out there tried this & how did you get on.  I only want about 10 -20 PSI.

Many thanks 

Robin 


New Zealand.  

KR> finally current again

[Robin Macdonald]

Subject: RE: KR> finally current again


I don't know if I am doing this correctly or not.  But I am a want-a-be that
soloed some years ago but never followed through due to financial
considerations with small children etc.  Now those considerations are all in
their forties and I am approaching retirement at 70.
  __

First consideration is your licence do you have the correct licence to be
able to fly a KR2, if not sort that out.

Suggest you go to " The Gathering 2009 "

I suggest you buy a KR2 Flying or a project that is well on it's way there
are several around.   It will save you a lot of time. Even if you have to
redo some of it you can see how someone else has done it.

Good luck

Robin

NZ

KR> Inspection

[Robin Macdonald]

Peter,

What was the reasoning behind the hardwood blooks, in the orignal RR only
use 0.90 aluminium.

What was the dia of the bolts that held the rod ends onto the spars
, I want to use 3/16th dia.

Robin.


- Original Message -
From: "Peter Drake" 
To: "KRnet" 
Sent: 6 February 2009 11:32 AM
Subject: KR> Inspection


Just had my inspector here. He has signed off all the gluing and foaming and
the dr Dean hinges on my rudder. I have been made to put hardwood blocks to
support the stem of the rod ends see photos on my website
www.peterskr2s.co.uk. All my other mods have been approved.
I have also been making the seat, with blue styrofoam and a layer of bid
both sides, it is fantastically strong and very light. photos soon.
I'll soon be able to start glassing the tail and wings, when the weather
gets a bit warmer.

Peter Drake
Hereford UK
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KR> KR2 in The Netherlands

[Robin Macdonald]

In Mid 08 someone with a KR in The Netherlands replied to a post of mine, would 
appreciate if you would reply again. 

I have had a good look for your email but must have deleted it. 

"Happy New Year " 

To  all on the Krnet  have a year of enjoyment & safe flying for 2009

Robin 

New Zealand.

50% done 90% to go. 

KR> KR Brakes

[Robin Macdonald]

Netheads,

 A suggestions to those who are starting to build.

Before you go too far have think about what are you going to do about brakes. 

Are you going to have any & if so what sort. How are you going to mount them. 
Are you going to incorporate them on the rudder bars. Are you going to mount 
your rudder bars from the top or the bottom. If you are going to make your own 
rudder bars you may be able to incorporate your brake monutings on them.  It 
will save taking 2 steps forward & about 10 back.

Good luck 

Robin.  

KR> email address

[Robin Macdonald]

Coda Riley,

Would you send me an email off net please, I tried sending one to you but it 
came back.

Thanks 

Robin
 r.macdon...@clear.net.nz 

KR> Rebuilding Wings.

[Robin Macdonald]

Netheads,

Thanks for all the replies. 

Someone suggested PVC tubes, someone else said be careful, with the modern day 
fuel they may attack the PVC. Plus not much difference in the weight of the 
thin wall Ali tube & the PVC 

I will go with the Ali tube.The tube comes in 5mt (12ft) lengths. I was 
concerned about the possibility of fuel sloshing back & forth. Apparently no 
problem.

Weight, 
Phil M his wings came in at 50 lbs including tank. I think it was Mark J his 
wings came in  at 56lbs with US 12 gal tank landing light etc. In an early KR 
newsletter someone's wings came in at 28lbs. So I think 50 lbs bare is a bit 
heavy I thnk I can do better than that. 

I have to redo the ailerons as there is a 1/4" concave in the in the aileron & 
the rear section of the wing. The ailerons are permanently sprung in the down 
position & you cant move them up beyond about 1/2" at the trailing edge, not 
sure how anyone managed to build them like that. The spar looks straight.

As I say thanks for all the replies, it is about 6mths down the track I have a 
lot of other wok to do before I get to the wings. .

When I start I will keep you all up to date.

Thanks 

Robin.

KR> 28# wings????

[Robin Macdonald]

Dan,

I found the newsletter  Aug 83 pge 2,   Q & A

Q, What should the wings & tail weigh.

A,  My wings were 28lbs with ailerons installed & without balance weights.
  Rudder  was 3lbs, Horiz Stab 7 lbs, Elevator   5lbs.

Robin.



> I am not sure that I would believe the 28# wings.  Almost half..  I
> weighed mine, no tank, 50#.
>
> See N64KR at http://KRBuilder.org - Then click on the pics
> See you at the 2007 - KR Gathering
> There is a time for building and a time for FLYING and the time for Flying
> has begun.
> Daniel R. Heath - Lexington, SC
> ---Original Message---
>
> In an early KR newsletter someone's wings came in at 28lbs.
>

KR> Tanks

[Robin Macdonald]

Netheads,

While we are busy discussing tanks, what about round tube versus fabricated 
tanks. I was a bit surprised the area of material to make a tank, a round tank 
will hold more than a square or oblong tank for the same amount of material.

We can work out what the weight for a round tube/ how much it holds. Has anyone 
any weights for their fabricated tank against what it holds.

Robin.

KR> Wing tanks

[Robin Macdonald]

Bill,

I had a look at your setup, do you know how much fuel & what the tank setup 
weighs.

Robin. 

KR> Mark Jones email

[Robin Macdonald]

Mark Jones.

I have tried to email you, but have had email returned.  Would you send email & 
I'll try again.

Thanks

Robin.

r.macdon...@clear.net.nz

KR> Dan Diehl

[Robin Macdonald]

Netheads 

Dan replied to my email he has been away then his computer crashed. 

Not sure how he's getting on.

robin.

KR> (no subject)

[Robin Macdonald]

Netheads,

I would like to contact Jeff Scott  (N1213W) but do not have his email adress.

Jeff would you reply to this email or does anyone know his email address.

Many thanks 

Much appreciated 

Robin.

r.macdon...@clear.net.nz 

KR> (no subject)

[Robin Macdonald]

Nethead

I'm having trouble sending emails. Dan Freeman would you send me an email 
please.

Robin.

r.macdon...@clear.net.nz

KR> email addresses

[Robin Macdonald]

To Mark Jones & Dan Freeman,

I have been trying to get hold of you but had emails returned. So I contacted 
my provider, & they said that your provider will not acept any emails from my 
provider as they think is is spam & reject it. You both use the same provider ( 
rr.com ) I'll see if I can contact through someone else. 

KRnet sorry to stuff you around but I thought others may have had the same 
problem & not sure why.   

Geeez the wonders of modern science & the morons that create spam etc. 

Thanks 


Robin.

r.macdon...@clear.net.nz 

KR> Rebuilding Wings.

[Robin Macdonald]

Netheads. 

I have acquired a KR2, & I would like to rebuild the outer wings.  The wings 
are heavy (approx 50 lbs), the aileron hinges are about 1/4" concave, & I would 
like to put tanks in the wings. 

Unfortunately I will stick with the RAF 48 airfoil I don't want to do the inner 
wings & reposition the rear spar. 

My method fasten the WAF's to a block of wood, Ali channel or what ever then 
cut the tip off & stick a block of wood to the outer end of the wing (not sure 
how, screw, glue or what ever). Then stick a piece of tube in the blocks of 
wood & use them like a rotisserie.

The block of wood at the inner end would be to keep the WAF's & spars in the 
same relative position.

Then take the lower skin & nose off & rebuild, probably use Mark L's method. 
Then turn over remove the top skin. Fit tanks probably 5" irrigation tube X 2 ( 
length depends on how much fuel I want).

One thing I was think about with fitting irrigation tube. Depending on the 
length what is the expansion/contraction going to be compared with the 
wood/fibreglass structure. I thought of  gluing the outer end (where the filler 
would be) in a cradle or what ever & allow the rest of the tube to 
expand/contract   

Then do top skin etc. 

My questions are 

Has anyone done anything like this before. Any thoughts, suggestions etc.

Thanks

Much appreciated.

Robin.

New Zealand   

r.macdon...@clear.net.nz

KR> Any trailer plans for KR's

[Robin Macdonald]

Bobby,

Not sure if anyone has already replied, someone on the KRnet in the UK has
what you want. The fuse is pushed in then the wings go in a box/crate with
wheels in the front & that slides under the fuse. Then shut the rear door &
away you go. He had wooden blocks glued on the end of the spars & this
helped the wings line up with the WAF's

Robin

r.macdonald


- Original Message -
From: "bobby burington" 
To: "KRnet" 
Sent: 7 May 2007 3:43 PM
Subject: KR> Any trailer plans for KR's


> Hi
>   I tried to search the KR archives but it isn't working right now so I
will try a little later, but does anyone have a good set of plans ( or know
of any ),  or good pictures, for a trailer for the KR-2 and a good way to
hold the wings? preferably a covered trailer.
>
>   thanks
>   Bobby
>
5:10 PM
>
>

KR> Wing Tanks

[Robin Macdonald]

Netheads,

A few weeks ago some was talking about using 5" irrigation tube for wing tanks, 
I am interested & am looking at doing something the same .

I would appreciate if you could email me of how you are getting on.

Many thanks 

Robin Macdonald 

New Zealand

KR> Wing Tanks

[Robin Macdonald]

Netheads,

Thanks for your comments.  Not sure which way I will go but appreciate all your 
suggestions & advice. 

When I get round to it I will let you know what I have done. 

Robin 

New Zealand. 

KR> Diehl Gear

[Robin Macdonald]

Net heads,

Someone asked about the Diehl Gear, 

There was a reply about the size/length  24"   &  30". What does this length 
apply to. ?

Thanks 

Robin

r.macdon...@clear.net.nz  

KR> Spruce V Douglas Fir

[Robin Macdonald]

Net heads,

There is a test rig for woods in a very early KR newsletter.  About # 10 or 
something like that

Robin.

r.macdon...@clear.net.nz

KR> Slick 4216

[Robin Macdonald]

Netheads,

I have a Slick 4216, I am after some information on it before I pull it apart. 
Would appreciate if anyone can help, O/H, clearances, setup etc. 

Thanks 

Robin 

New Zealand

r.macdon...@clear.net.nz 

KR> Sun N Fun

[Robin Macdonald]

Mark wrote

. " Last year I camped in the woods with Brian Kraut and Dana Overall, so 
I'll plan to do that this year too."  

Sounds as though it's the gathering of the Sun N Fun Gnomes.

Signed 

Anonymous 

PS

I wish I could join you

KR> Dan Freemam

[Robin Macdonald]

Netheads,

I have been trying to get hold of Dan Freeman, but his email keeps coming back 
unable to be delivered. 

Dan if you see this would you reply please its about X Plane.

Regards 

Robin 

New Zealand 

r.macdon...@clear.net.nz

KR> Aero Twin Engine

[Robin Macdonald]

Netheads,

Has anyone know of an engine Aero Twin ,   something to do with Aero Twin Motor 
Corporation in Nevada.  or Air Scooter Corporation.

It is a light weight high power 4 stroke engine, 2 cylinder 70 hp at 75 lbs. 

Develpoed for a helicopter, & could be used in light aircraft.

Much appreciated.

Robin 

New Zealand

r.macdon...@clear.net.nz

KR> PUSH-PULL CONTROL CABLES

[Robin Macdonald]

Pete,

What about using the cables for outboard motors, If I remeber rightly they
were called Teleflex

Robin

> Guys,
> Has anyone looked at using push-pull cables for aileron and elevator
> controls? I have seen them used on Kolb Aircraft, but they would not
devulge
> any info as to their supplier. Any info, pro or con, would be greatly
> appreciated.
>
> Thanks,
> Pete Klapp, KR-2S
> Canton, Ohio

KR> Wing Incidence & Washout

[Robin Macdonald]

Netheads,

I have been following the discussion on the wing incidence & washout & found it 
very interesting.

One thing, everyone has used the AS 5046 at the root & the AS 5045 at the tip. 

There has been no mention of the AS 5048, Why not & what characteristics would 
the AS 5048 give?  & what is the shape of the tip rib when using the AS5048 at 
the Root. 

Robin 

New Zealand.

r.macdon...@clear.net.nz

KR> New Forum

[Robin Macdonald]

Hi guys,

I am still on dial-up (Broardband has been coming & going for the last few 
months not sure what is going on)  I find the new Forum a bit unwieldy & slow 
sorry it is not for me. As somone suggested can the emails be sent as they are 
now as well as the forum, would be much appreciated.

And now with the Spyware etc. being updated every few days a few minutes with 
dial-up can turn into 15 minutes no problem. 

Robin.  

KR> Paypal

[Robin Macdonald]

Netheads,

Someone suggested to pay for an article by Paypal. I agree it is an excellant 
process but don't forget how do you pay Paypal. 

You have to pay Paypal through a credit card, there is a charge because the 
transaction is in another country, a charge because it is an other currency a 
charge because there is a "T" in the day etc  The banks screw you for 
everything they can.

Sometimes bank charges can be horrendous to say the least.  

Robin.

KR> DRO

[Robin Macdonald]

Netheads, 

I realise this is not KR2 related, but hope someone out there can help me. 

I have a lathe with an ACU-RITE DRO on it & one of the heads has died. I have 
sent 2 emails to ACU-RITE in USA within the last week but so far had no reply. 
Is there anyone out there who has had experience with ACU-RITE DRO's any 
suggestion or help would be much appreciated.  Off net of course.

Robin 

New Zealand

r.macdon...@clear.net.nz

KR> KR2 Upside down

[Robin Macdonald]

Netheads,

I opened this mornings paper, there is a photo of a KR2 upside down at a local 
airport. 

He landed beside the tarmac runway ( not sure why) & then flipped over. The 
ground was very soft & soggy. 

Looks like a tail dragger with retracts. 

Not badly hurt, canopy & prop smashed . Moral of the story check strength of 
roll bar .

Will let you know when I find out more. 

Robin 

New Zealand.
r.macdon...@clear.net.nz

KR> Dan Diehl

[Robin Macdonald]

Netheads,

I have ben trying to get hold of Dan Diehl as well, I have just had an email 
back from him. 

The address was d...@diehlaero.com

Good Luck

Robin.

KR> Glassing

[Robin Macdonald]

Netheads,

I have been given some early KR Newsletters. In one Newsletter Aug 97 there is 
an article about glassing etc. This guy's suggestion was before glassing prime 
the foam. this stops the epoxy soaking into the foam. 

Make a primer of powered waterproof glue mixed with water, the type that can be 
purchased at the hardware store. Mix the glue according to instructions, then 
begin to thin with water while mixing in micro ballons.

Experiment with some scrap foam & adjust the mixture until the filler sands 
almost as easily as the foam. This seals the foam & stops the foam absorbing 
any expoxy resin, makes it lighter & you use less resin 

Has anyone else tried this & what was the results. I am interested in your 
comments.  

Robin.

r.macdon...@clear.net.nz

KR> Splicing Longerons

[Robin Macdonald]

Net Heads,

Someone was going to splice the longerons to extend the fuselage. The 
recommended splice is 15 : 1 .

good luck.

Robin

r.macdon...@clear.net.nz 

KR> Turbo's

[Robin Macdonald]

Netheads,

Something you have to take into consideration when fitting a turbo to a non 
turbo engine is the compression ratio. 

A non turbo engine will be in the range about 10 : 1  & a turbo engine will 
have something like 8 : 1

Robin.

r.macdon...@clear.net.nz

KR> Resin Shelf life

[Robin Macdonald]

Netheads,

There was an inquiry a few weeks ago about the Storage/Shelf life of Resins. 

I have just received the Product Guide for the West System

Store at room temperature. Keep containers closed to prevent contamination. 
With proper storage, resin & hardener should remain usable for many years. Over 
time 105 resin will thicken slightly & therefore require extra care when 
mixing. hardeners may darken with age, but physical properties are not affected 
by colour. 

Mini Pumps may be left in containers during storage. After a long storage, it 
is a good idea to verify the metering accuracy of the pumps & mix a small test 
batch to assure proper curing. Repeated Freeze/thaw cycles during storage may 
cause the crystallization of 105 Resin. Warm resin to 125 degrees F & stir to 
dissolve crystals. 

Don't forget this only applies to the West System, but may be a guide for other 
types.

I hope this gives some guide to those who were not sure where to store the 
resin, or how long it will last . 

But as always irrespective of age etc do a test piece your life depends on it & 
you will sleep better at night knowing you have done all you could. 

Robin

r.macdon...@clear.net.nz  

KR> Mike Mims email address

[Robin Macdonald]

Netheads,

Can anyone help me please. 

I am trying to get hold of Mike Mims, tried an email addres, but it came back. 
Something missing.

Thanks 

Robin

r.macdon...@clear.net.nz  

KR> Undercarriage Loadings.

[Robin Macdonald]

Net Heads

Thanks guys for all your answers, it makes one think a bit more. Not only the 
undercarriange has to withstand the high loading but everything has to. Wings 
engine, things you hang on the instrument panel, the seat, as I say everything.

The manual gives the flight loading  + 4.4 g   -1.7 g  but Mark's 5.5 (& still 
in one piece) is getting up there a bit. 

Once again thanks to everyone. 

Robin.

r.macdon...@clear.net.nz

KR> Undercarriage Loadings.

[Robin Macdonald]

Larry,

I copied the KR2s Operatimg Manual off the KRnet not sure whose site I
copied it from,

 KR2S Operating Manual
Version 2
July 6 2001

Under Maxiums

Gross 1100  lbs
Maneuvering speed 134 MPH
Flight Load Factor   + 4.4 -1.76  G

Robin.

r.macdon...@clear.net.nz

> At 03:26 PM 9/21/2006, you wrote:
> >The manual gives the flight loading  + 4.4 g   -1.7 g  but
> >Mark's 5.5 (& still in one piece) is getting up there a bit. .
> >Robin.
> >++
>
>
> Robin,
>
> Where did you get those numbers?  (+4.4g -1.7g)
>
> My builders manual says "+/-7 g's at 800 pounds".
>
> Larry Flesner
>
>
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.405 / Virus Database: 268.12.5/450 - Release Date: 18/09/2006
>
>

KR> Undercarriage loadings

[Robin Macdonald]

Netheads,

Those who have G meters has anyone any idea what is the G loading at a good 
bounce during landing ?

Robin

r.macdon...@clear.net.nz 

KR> Higher H.P. from your engine

[Robin Macdonald]

Hang on hang on Guys,

Ron has a good point if used correctly Nitrous Oxide is not a problem.

Don't forget a lot of you are busy pushing the envelope for the KR2 .

The KR2 of 2006 is a wee bit different to the KR2 1990.

Robin.

r.macdon...@clear.net.nz  

KR> Height of Canopy.

[Robin Macdonald]

Netheads,

There was a question asked a few weeks ago but I have not seen a reply.

What is the max height of the top of the canopy or top of turtle deck without 
interfering with the airflow over the tail feathers  

What has been used as the datum, (botom of the fuselage) or (top of rear spar).

Or what height has anyone gone to. 

Thanks 


Robin

r.macdon...@clear.net.nz 

KR> Going Topless

[Robin Macdonald]

Mark,

You suggest you may go topless.

I would be very interested, (but unfortunately it is a bit far to come & see) 
how do you attach your turtle deck & front deck to the fuselage & how do you 
finish or hide the join.

Are there any others who have done the same & how do you finish off the join 
line.

I have had a look at various sites but can't find any photo's or much 
information  

Thanks.

Robin 
r.macdon...@clear.net.nz 

KR> Nosewheel thingie

[Robin Macdonald]

Netheads,

I have enjoyed all the discussion on the steerable tailwheel, to all those who 
contributed your answers have been taken onboard. 

Now what about a steerable nosewheel, are there any out there & the pro's & 
con's.

Thanks

Robin


r.macdon...@clear.net.nz  

Fw: KR> Nosewheel thingie

[Robin Macdonald]

Dan,

I have not started building yet just collecting everything I can before I make 
that decision. Not sure to go Tri or tail dragger, each has it's pro's & each 
has it's con's 

Robin.

r.macdon...@clear.net.nz

- Original Message - 
From: Dan Heath 


  Robin,

  Are you building a nose wheel or a tail wheel plane?

  See N64KR at http://KRBuilder.org - Then click on the pics 
  See you at the 2007 - KR Gathering
  There is a time for building and a time for FLYING and the time for 
Flying has begun.
  Daniel R. Heath - Lexington, SC
  ---Original Message---

  From: Robin Macdonald
  Date: 08/30/06 17:12:33
  To: KRnet
  Subject: KR> Nosewheel thingie

  Netheads,

  I have enjoyed all the discussion on the steerable tailwheel, to all 
those who contributed your answers have been taken onboard.

  Now what about a steerable nosewheel, are there any out there & the pro's 
&
  con's.

  Thanks

  Robin


  r.macdon...@clear.net.nz
  ___
  Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
  to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
  please see other KRnet info at http://www.krnet.org/info.html

KR> Flaps/tubes tec.

[Robin Macdonald]

Netheads,

I am interested in all the information about flaps/connection to tubes etc.

Has anyone any idea what the touque is on the tube when the flaps are lowered. 

This would give anyone an idea of what size tube to use, what size of flanges  
connections etc & what power is needed in the actuator.

Also once the system was finished you could test load to a required torque. 

Regards 

Robin


r.macdon...@clear.net.nz

KR> Props

[Robin Macdonald]

Netheads,

For what it is worth, I have come across a site about props, one comment there 
was that the ideal prop speed is, a tip speed of 680 Ft/sec.

This may help in the selection of the correct prop. 

Robin 

New Zealand

r.macdon...@clear.net.nz

KR> Props

[Robin Macdonald]

Netheads,

I guessed it would open a can of worms. 

The site I looked at gave an ideal speed of 680 ft/sec, & it looks as though 
you should never exceed 900 ft/sec. 

So this should give anyone a rough guide of what the RPM should be for a given 
diameter. If the RPM is out you should change the pitch.

Regards 


Robin 

New Zealand



r.macdon...@clear.net.nz 

KR> Polyester V Epoxy

[Robin Macdonald]

Hi guys,

I have been reading the comments about polyester resin.

Just a thought, what about surfboards they have been around for 40 years. They 
are made from a block of foam then cut in half & a thin wood stringer is glued 
in the middle. Then the shaper shapes the board, then it is glassed with 1 or 2 
layers of glass using polyester resin .

Have you seen any of the surf contests, especially in Hawaii with the big waves 
& I mean big. These guys get out there & then try & ride the wave.

The point I am making, they have been around for a long time, the stress that 
get from surfing, they sit on top of vehicles in all weathers, from hot sun to 
snow. 

The only time the glass lets go from the foam plug is when they get dinged, 
dropped on rocks etc I have seen a few boards break in half, you ask the guy 
what happened, he was on a wave about 20 ft high then got flung off & the bard 
hit the bottom. 

I think this would be a good example to say that polyester resin hangs on. I 
would think the stress the surfboad gets would be similar to an aircraft.  

Anyone else have any comments.


Robin

New Zealand.  

KR> C5 down under

[Robin Macdonald]

Yeah right, & someone will be there with a bloody great fly swat.

Robin

NZ.


- Original Message -
Subject: Re: KR> C5 down under


> In the C5 we could all take turns flying around the interior with the
KR's.
>
> --
> Paul
> KR2 Stretched
> Derry, NH
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.10.7/410 - Release Date: 05/08/2006
>
>

Fw: KR> another quick flying story

[Robin Macdonald]

Mark & Netheads,

If you like to pay my airfare, & accomdation I will  balance your engine for
free. I'll bring my gear & spend the next 6 mths going from place to place
checking vibration & balancing engines/props. for anyone & everyone  That is
what I have been doing for the last 25 years & now trying to retire out of
it & build a KR2.

Well I can only ask.

Great to hear all the stories, suggetions etc. Keep up the good work.

Robin

New Zealand.




Now that the spinner is complete and installed, I'm
> working on scheduling an engine balancing session, whereby the guy
installs
> a bolt and some washers in the spinner back plate to even everything out.
> It feels smooth to me, but we'll see what he says.  Cost will be $150.
>
> Mark Langford, Huntsville, Alabama
> see KR2S project N56ML at http://home.hiwaay.net/~langford
> email to N56ML "at" hiwaay.net
>
>

Fw: KR> KR Project

[Robin Macdonald]

If only we were 10,000 miles closer to each other.

KR2 hopeful
Robin Macdonald
New Zealand


- Original Message -
From: "Larry H." <lah...@yahoo.com>
To: <kr...@mylist.net>
Sent: 15 July 2006 6:10 AM
Subject: KR> KR Project


> One more thing, I may have a KR project for sale, not the one I am working
on but another one that has boat, turtle deck, windscreen in and sliding
canopy that needs sliding mechanism remade in my opinion. It has Diehl wings
and premolded tail skins.
>   I would sell it for about $ 2,000.00
>   Email me off list if you may be interested. It would be a very fast
start if someone is interested.
>   Larry H.
> ___
> Search the KRnet Archives at http://www.maddyhome.com/krsrch/index.jsp
> to UNsubscribe from KRnet, send a message to krnet-le...@mylist.net
> please see other KRnet info at http://www.krnet.org/info.html
>
>
> --
> No virus found in this incoming message.
> Checked by AVG Free Edition.
> Version: 7.1.394 / Virus Database: 268.9.10/385 - Release Date: 11/07/2006
>
>