KR> push pull rod sizes

[Mark Langford]

Joe Cruz wrote:

> > Can someone tell me the size tube they installed inside the dual stick 
> > controls ? Also the elevator control tube from dual controls going back 
> > under the rear spar to bellcrank behind rear spar?.. 5/8"/0.049 
> > wall,4130 tube looks like the right size but not sure.<<

I was going to measure it for you this weekend, but it turns out both are 
covered at http://www.n56ml.com/kcontrol.html ...1/4" OD for the internal 
one, and .75" for the other.  At the time I built my dual stick setup, I 
thought .75" seemed "about right" to me on the one from the stick torque 
tube to the bellcrank, but now that I know how little force  you can 
actually generate on the stick without ripping the wings off, I'd say 5/8" 
is fine.  I probably should have calculated it and realized that it would be 
some crazy number like 900 pounds of force, but at the time I had much 
bigger fish to fry than to get wrapped around that axle, and I'm still in 
that boat.

I don't think that last sentence qualifies as a mixed metaphor, but there 
are three of them twisted in there...

Mark Langford
ML at N56ML.com
website at http://www.N56ML.com
 

KR> KR Forum-gear placement

[GaryH]

Try this.  See attached doc.

Gary

Soli Deo Gloria

-Original Message-
From: KRnet [mailto:krnet-bounces at list.krnet.org] On Behalf Of Flesner via
KRnet
Sent: Friday, July 04, 2014 3:03 PM
To: KRnet
Subject: KR> KR Forum-gear placement

At 01:11 PM 7/4/2014, you wrote:
>For tri-gear I am very much aware that the main wheels are not set 
>far enough to the rear to consistently keep the tail from dumping 
>when trying to mount or dismount.

+++

It's their placement when loaded for flight that is of primary 
concern.  Put them too far to the rear and it will be more difficult 
to rotate of takeoff.  One lightweight aircraft that we all know 
won't even set with the nose wheel on the ground without the pilot on 
board.  If loading and unloading is a problem a retractable tail 
stand might be in order.  The B-24 puts out a pogo stick when parked.

Larry Flesner 


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KR> push pull rod sizes

[cruzj12 at frontiernet.net]

Can someone tell me the size tube they installed inside the dual stick controls 
? Also the elevator control tube from dual controls going back under the rear 
spar to belcrank behind rear spar?.. 5/8"/0.049 wall,4130 tube looks 
like the right size but not sure. Thanks


Joe Cruz

cruzj12 at frontiernet.net
KR1.5 N3151K
KR2S builder

KR> KR Forum-gear placement

[Flesner]

At 01:11 PM 7/4/2014, you wrote:
>For tri-gear I am very much aware that the main wheels are not set 
>far enough to the rear to consistently keep the tail from dumping 
>when trying to mount or dismount.
+++

It's their placement when loaded for flight that is of primary 
concern.  Put them too far to the rear and it will be more difficult 
to rotate of takeoff.  One lightweight aircraft that we all know 
won't even set with the nose wheel on the ground without the pilot on 
board.  If loading and unloading is a problem a retractable tail 
stand might be in order.  The B-24 puts out a pogo stick when parked.

Larry Flesner 

KR> KR Forum

[smwood]

Mark,
For the KR Forum you could address the cg concerns for different engines and 
extending the engine mounts.  Some of the additional things going in the 
tail not in the plans could be trim tab motors, elevator counter balance 
stuff, wider elevators, antennas and associated wiring, auto pilot servos 
and hardware associated with removable turtle decks.  For tri-gear I am very 
much aware that the main wheels are not set far enough to the rear to 
consistently keep the tail from dumping when trying to mount or dismount. 
Don't know if these issues are addressed in the KR-2S supplement plans.
Today I would not build a two-place KR with a 34-inch wide cockpit: that is 
absurd.  Yep, been there, done that.

Sid Wood
Tri-gear KR-2 N6242
Mechanicsville, MD, USA
---

> If anybody has any input as to what we should talk about at the KR Forum 
> (Monday morning July 28th at 8:30 in Pavilion 4), I'm open to suggestions. 
> I'm hoping my webinar will keep me from having to go over the very basics 
> of KRs, so we should have a lot more time to dedicate to specifics this 
> year around.  I'll steer "newbies" to the webinar with a handout.
>
> Mark Langford

KR> LANDING GEAR LEGS

[ol' weirdo]

Has anyone made landing gear legs from the fiberglass rear springs that
Pontiac used on vans a while ago?

Bill Weir

KR> KR Gathering 2014 Update!

[Steve G.]

Ok, it seems that copy and paste is not working.  I have had offers of
fixing the submit button on the page to send me the info.  I found that the
page was made in Front Page or Pagemaker.  I may have an old copy somewhere
so will try that first. If not I will be soliciting the help from those who
offered.  Thank you for stepping up! :)

I have received some registration emails and will add you to the list.
Other than those who specifically listed their preferences, I didn't get
specifics from anyone. I will be in touch with a few of you today.

Thanks for your patience while I muddle through this.

Steve Glover

KR> LANDING GEAR LEGS - Pontiac Leaf Springs

[Peter Johnson]

Hi Bill.

I took a pair of the springs and tested them for flex.  They would have been 
a bit soft, but quite doable with some additional wrapping.

I wrote of the efforts some years ago, along with concerns for converting 
the springs to gear legs.  You'll have to search the archives.


Peter Johnson
Kenora, Ontario




- Original Message - 
From: "ol' weirdo via KRnet" 
To: 
Sent: Friday, July 04, 2014 7:43 AM
Subject: KR> LANDING GEAR LEGS


> Has anyone made landing gear legs from the fiberglass rear springs that
> Pontiac used on vans a while ago?
>
> Bill Weir
> ___
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> To UNsubscribe from KRnet, send a message to KRnet-leave at list.krnet.org
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> options 

KR> Trim tab cut out.

[Jeff Scott]

I don't think it is critically important one way or the other, but I cut mine 
square with the spars.    It just 
seemed easier that way.  

Jeff Scott
Los Alamos, NM



> Sent: Thursday, July 03, 2014 at 5:38 PM
> From: "Paul Visk via KRnet" 
> To: "KR EMAIL BOARD" 
> Subject: KR> Trim tab cut out.
>
> This might be a silly question but I can't decide. Should I cut the trim tab 
> out square with the spar? Or square with the trailing edge? and whatever I 
> decide I know my ray allen trim tabs servo would have to be square to the 
> tab.?
> 
> Paul Visk
> Belleville Il
> 618 406 4705