KR> Vacuum Pump

[laser147 at juno.com]

I had a 1983 Cadillac with the 4.1 V-8 that had a belt driven vacuum pump
to supplement manifold vacuum.  I don't know how common that is, using a
vacuum pump to supplement manifold vacuum on car engines, but the 4.1
came from the factory with such a pump.  So . . . junkyards would be a
good source of vacuum pumps although I'm sure one can find a more elegant
solution to provide vacuum to drive whatever needs to be driven.  

Keep in mind that you can use two external venturi tubes instead of one. 
I've seen planes with two.  They're subject to icing as someone said . .
. and that would happen right when you needed your vacuum instruments the
most.  In this era of AHARS I think I would bypass using vacuum at all. 
Vacuum pumps have always been the weak link in the system and venturi
tubes are too vulnerable as well as causing drag.  It's time to go with
more reliable technology if you intend to actually use those instruments.


Mike
KSEE




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KR> Vacuum pump

[Dana Overall]

>From: "Colin & Bev Rainey" 
>
>Dynon makes a great unit and if VFR is your only goal than all is good.  If 
>IFR is your goal than it is not IFR for stand alone use. It must be backed 
>up by all analog gauges or 2 electrical systems in the event of electrical 
>failure of the primary.

Colin, I'm not going to get into a KR and IFR debate as most know how I 
feel.  However, the above statement is not correct and I just want to 
correct this thought.  The Dynon used as an artificial horizon satisfies the 
required equipment list as is, this is not a portion of the regs that must 
meet the "IFR approved" equipment for the ground facilities to be used 
requirement.  Just wanted to clear that up.  In my case I do not have an 
alternate horizon as it is not required but am using as essential bus 
electrical system just for my satisfaction as well as an autopilot totally 
independant of the horizon.  You will get conflicting versions all around 
this issue but it is really pretty cut and dry.



Dana Overall
1999 & 2000 National KR Gathering host
Richmond, KY i39
RV-7 slider, Imron black, "Black Magic"
Finish kit
13B Rotary. Hangar flying my Dynon.
http://rvflying.tripod.com/aero1.jpg
http://rvflying.tripod.com/aero3.jpg
http://rvflying.tripod.com/blackrudder.jpg
do not archive

KR> Vacuum pump

[Stephen Jacobs]

if you want a cross country airplane that won't wear you out, check out
EZ Pilot Autopilots (do a search) and TruTrack



EZ Pilot:  http://www.trioavionics.com/

TruTrack:  http://www.trutrakflightsystems.com/

KR> Vacuum pump

[Colin & Bev Rainey]

You can use an air or smog pump standard equipment on many autos from the 70s 
and 80s, and just reverse the hookups so that instead of blowing it is sucking 
air.  They were belt driven in plentiful supply, easy to rig, light weight, and 
low on hp draw.

Colin & Bev Rainey
KR2(td) N96TA
Sanford, FL
crain...@cfl.rr.com
http://kr-builder.org/Colin/index.html

KR> Vacuum pump

[Stephen Jacobs]

You can use an air or smog pump standard equipment on many autos


+++

I have seen reference to a "smog pump" on several occasions - hoped that
it would become obvious at some point and save me from showing my
ignorance - what is a smog pump?

Steve J

KR> Vacuum pump

[jsmon...@aol.com]

Do you need to regulate the vacuum on the smog pump?.. well it run the DG and 
AI?

A gentlemen e-mailed me off line and his 1960 172A has a belt driven vacuum 
pump and it has worked well with only needing periodic belt replacement.

Thanks,
John Monday
KR2S Laguna Beach, CA

KR> Vacuum pump

[jscott.pi...@juno.com]

I have seen reference to a "smog pump" on several occasions - hoped that
it would become obvious at some point and save me from showing my
ignorance - what is a smog pump?

Steve J



Smog pump is the reference to a small belt driven air pump that was used in the 
70s and 80s cars to inject fresh air into the exhaust ahead of the catalytic 
converter to help the converter to burn off the left over hydrocarbons in the 
engine exhaust.  If one was to use the inlet side of this pump, it makes a nice 
little vacuum pump.  Owen McPherson appears to have this setup on his VW 
powered KR. 

Re: regulating vacuum.  If the vacuum can exceed the rating for your gyros, you 
probably need to use a vacuum regulator.  

The KR Gathering is the place to see all these kinds of innovations in use.

Jeff Scott

+++






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KR> Vacuum pump

[Stephen Jacobs]

Smog pump is the reference to a small belt driven air pump that was used
in the 70s and 80s cars to inject fresh air into the exhaust ahead of
the catalytic converter

+

Thanks Jeff - Nothing like that in Africa.

Pretty neat and cost effective vac pump = probably a fraction of the
price and 4 times the life.

Score one for the innovative

Steve J

KR> Vacuum pump

[tncompressor...@aol.com]

In a message dated 7/13/2004 1:18:02 PM Eastern Standard Time, 
ask...@microlink.zm writes:
Smog pump is the reference to a small belt driven air pump that was used
in the 70s and 80s cars to inject fresh air into the exhaust ahead of
the catalytic converter
My old ford truck (1985 Diesel) uses a belt driven vacuum pump to operate the 
power brakes and heater/ac controls, as there is almost zero vacuum with a 
diesel engine.  I replaced it a couple of years ago, about $70.00 from auto 
zone.  the first one lasted over 300,000 miles.  Seems like it weighed about 2 
lbs. , and is a diaphragm type pump.  Might be worth looking into. 

Riley Collins
Rutledge, TN

KR> Vacuum pump

[Colin & Bev Rainey]

Dynon makes a great unit and if VFR is your only goal than all is good.  If IFR 
is your goal than it is not IFR for stand alone use. It must be backed up by 
all analog gauges or 2 electrical systems in the event of electrical failure of 
the primary.  True all electric panels have been used for years in the jets but 
with redundant electricals.  Even more weight
 Every choice has its own compromises, choose whatever best suits you...

Come inspector please call back

Colin & Bev Rainey
KR2(td) N96TA
Sanford, FL
crain...@cfl.rr.com
http://kr-builder.org/Colin/index.html

KR> Vacuum pump

[Wood, Sidney M.]

Even the gee whiz Sirius machines and Cessna 182 glass cockpits are required to 
have the analog gauges.  Still in transition...

Sid Wood, Tri-gear KR-2 N6242
Mechanicsville, MD USA
sidney.w...@titan.com

-

Dynon makes a great unit and if VFR is your only goal than all is good.  If IFR 
is your goal than it is not IFR for stand alone use. It must be backed up by 
all analog gauges or 2 electrical systems in the event of electrical failure of 
the primary.  True all electric panels have been used for years in the jets but 
with redundant electricals.  Even more weight
 Every choice has its own compromises, choose whatever best suits you...

Come inspector please call back

Colin & Bev Rainey
KR2(td) N96TA
Sanford, FL
crain...@cfl.rr.com
http://kr-builder.org/Colin/index.html

KR> Vacuum pump

[Ron Freiberger]

Anyone who DELIBERATELY flys a KR into IMC needs more than a
backup.

Why would anyone expect a sporty flying aircraft to fly like it
was on rails?

Ron Freiberger
mailto: rfreiberger at swfla.rr.com

KR> Vacuum pump

[Barry Kruyssen]

For accruals to be paid on termination the accrual records (pay component def 
1200) must have the "TERMINATE" config type

See the code in HRPAY710, Private Sub fSelectPayComponents
ElseIf rlPayCompDef = 1200 Then
'' only get PCRefs that are in the TERMINATE pay comp config
If hr.cache.PCCfgCache.Item("TERMINATE", 
hr.cache.PCRefCache.Item(loData("fPCRef")).AccrlPayCompRef).Loaded = True Then

regards
Barry

  - Original Message - 
  From: Ron Freiberger 
  To: KRnet 
  Sent: Thursday, July 15, 2004 6:55 AM
  Subject: RE: KR> Vacuum pump


  Anyone who DELIBERATELY flys a KR into IMC needs more than a
  backup.

  Why would anyone expect a sporty flying aircraft to fly like it
  was on rails?

  Ron Freiberger
  mailto: rfreiberger at swfla.rr.com





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  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> Vacuum pump

[jsmon...@aol.com]

Perhaps some of us would like to fly IFR flight plans and never fly into 
IMC...  or perhaps we live in a marginal foggy area all summer and would like 
to 
fly every once in awhile when the visibility is slightly under VFR...  or use 
IFR designated flight routes through military training areas not otherwise 
available.

Thanks,
John Monday
KR2S
Laguna Beach, CA



In a message dated 7/14/2004 3:02:20 PM Pacific Daylight Time, 
k...@bigpond.com writes:
Anyone who DELIBERATELY flys a KR into IMC needs more than a
  backup.

  Why would anyone expect a sporty flying aircraft to fly like it
  was on rails?

  Ron Freiberger

KR> Vacuum pump

[Stephen Jacobs]

= fly (file) IFR flight plans and never fly into IMC

= marginal foggy area all summer 

= visibility is slightly under VFR

= use IFR designated flight routes



John puts the matter into perspective - IFR does not always mean heading
into hard QBI.  So many of my flights end 15 minutes after dark and
during the summer months we often need to drop through 1000' of gentle
cumulus to get home.

Besides that, even with the required level of respect for the weather
and the very best of intentions, sooner or later you will run out of
blue sky (or day light).  Folks that use their airplanes purely for fun
around home base can probably ignore this, but if you often fly cross
country the odds change.

I had an in depth look at the Dynon EFIS including a discussion with
their technical guy - I think it is a Godsend for home builders from a
cost /weight /facilities perspective.  The solid state gyros are pretty
solid and the overall system should be as reliable as any other piece of
modern avionics or electronics.

Over the last 35 years I have had loads more grief from vacuum pumps and
gyro instruments than I have ever had with a radio /ADF /Xponder /Hi-fi
/VDU or a $19.99 walkman.  Over that time the electronic stuff has
become even lighter, better, cheaper and even MORE reliable - the steam
gauges are still exactly what they were then.

Redundancy is obviously first prize, but we don't really have that
anyway - singles generally only have one vac pump - when that fails the
AH and DI go out the window leaving you with a compass and the electric
T  If the electrical system quits as well- you have now't.  Don't
think that this does not happen.

The Dynon power requirement is typical of modern electronics - it will
happily keep you well informed for a few hours on backup from the
smallest of Gel Cells.  The unit is designed to switch to a reserve
battery - so no wizardry is required from us.

Totalling the costs of a modest steam gauge panel layout with the
associated vac kit makes the Dynon sound pretty good to me.  A Glass
cockpit KR for the same or less money.

As a bonus, the Dynon produces the output needed for an auto pilot (roll
and pitch /alt.).  I suspect that only a low cost interface is required
to drive the pitch and roll control via the trim servos. 

Take care
Steve J

KR>vacuum pump

[Mark Langford]

Correction, RW's vacuum pump thing is at
http://www.krnet.org/misc/vacuumpump.pdf

Mark Langford, Huntsville, AL
N56ML "at"  hiwaay.net
see KR2S project at http://home.hiwaay.net/~langford

KR>vacuum pump

[Dan Heath]

So, I assume that this pump drives off, what would be, the magneto drive. 
The reason that I am guessing that, is because it requires that you have
electric ignition. 

See N64KR at http://KR-Builder.org - Then click on the pics

Daniel R. Heath - Columbia, SC

da...@kr-builder.org

See you in Mt. Vernon - 2004 - KR Gathering

See our EAA Chapter 242 at http://EAA242.org