Today's Message Index:
----------------------
1. 12:34 PM - CHT: JPI v. EI (teamgrumman@AOL.COM)
2. 02:56 PM - Traveler Project (teamgrumman@AOL.COM)
3. 03:39 PM - Re: Re T/s Assist (Gary L Vogt)
Message 1
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I've been saying this for at least 20 years.=0A=0A=0A=0ACub Cr
afters just published a DER report this month that compared
various=0Abrands of CHT thermocouples to each other. The cont
rolled test show that the=0Aungrounded thermocouples as used in
the Electronics International instruments=0Awere as much as 50 d
egrees cooler than the grounded thermocouple probes as=0Aused in
JPI Alcor and Dynon. We always suspected there was a d
ifference=0Ahowever I thought the true temperature would be some
where in between.=0AThis report advises that the EI's are indi
cating too cold, That might become=0Aa big issue for EI soon
. This report is 20 pages long, I don't have a=0Aknown
link to it, might be available at Cub Crafters.=0A=0AI have
always liked the EI brand, however after reading this report,
I have=0Asuspended installing any more EI CHTs until they have
a fix, or good evidence=0Aof that their CHTs are reading
correctly.=0A=0AReport Title: CC11 CHT System and Probe Compari
son=0A=0A
Message 2
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| Subject: | Traveler Project |
I thought I posted this before, but I don't see it under
sent emails and I don't remember seeing it come over as an
email.=0A=0A=0AHere's the skinny.=0A=0A=0APaul bought this plane
a few years ago, flew it for about 10 months, and when h
e found out the engine had a bad cam, decided to do a
restoration.=0A=0A=0AFirst, he sent the engine to LyCon. That
was two years ago.=0ASecond, he disassembled the plane to have
it painted. =0A=0A=0AAfter it was painted, it sat until
LyCon finished the engine. He just got the engine back; i
t's been ported and polished and painted to match the plane.
It looks real good. =0A=0A=0ASince it's easier to take
a plane apart than to put it together, he hung onto the
project looking for someone to put it together. He contacte
d me a few weeks ago and then brought the plane to Aubur
n.=0A=0A=0AWith fresh paint, the fuselage looks pretty good.
Wings good too if small hail dents don't bother you. =0A=0A
=0ASince he wanted to do this right, he bought a Power Flo
w Exhaust System and a LoPresti Nose Bowl. He also bought
a Sensenich prop with 445 TTSN.=0A=0A=0AHe has over $20,000
invested in the engine. =0AThe PF exhaust system was $4400.
=0AThe LoPresti nose bowl was over $5000. =0AThe Sensen
ich prop was $3000=0A=0A=0APaint was also several thousand dolla
rs. =0A=0A=0AI started putting the plane together. My firs
t step was to hang the engine since it would be easier t
o move around with an engine balancing the plane. Then I
removed all of the parts that were left inside. It was
then that I found a fair amount of corrosion on the top
of the center spar. The wings look pretty clean. When
I told the owner, he opted to find another project and sel
l this one. =0A=0A=0AGood news, he bought the Tiger that
was for sale in Virginia. It's a project too, but he ca
n fly it.=0A=0A=0AThe Traveler project will need:=0A- Interior=0A-
Glass (windows and windshield)=0A- much of the wiring, FWF,
'should' be replaced.=0A- Avionics. Not much in the way of
avionics. =0A He will offer the ADF, DME, and whateve
r else I remove from the Tiger if you're interested. =0A=0A
=0APaul wants $38,000 for the project. Or, he'll sell the
ENGINE, PFS, PROP, and nose bowl separately, for what he has
in them, and part out the Traveler. The ADF and DME
are also available for sale.=0A=0A=0AGary=0AAuCountry Aviation=0A
Message 3
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| Subject: | Re: Re T/s Assist |
I had a similar problem with a Cheetah. -=0A=0ABarry's comment about fuel
pressure is a good one the investigate.=0A=0AWhat I did was to send the ca
rb to LyCon and have them flow test the carb and repair as necessary. -I
don't recall the exact fix but whatever it was, it solved the problem. -
=0A=0AOn my website, I have IDLE mixture setting instructions. -Look unde
r Technical Stuff. -Most mechanics do not know how to set the IDLE/Mixtur
e.=0A=0AI usually set the IDLE to the lowest limits. -This way, when land
ing, the engine isn't pulling. -=0AOn a Tiger, I shoot for 500 rpm or les
s. -On a Cheetah, 600 rpm or less. -=0A=0AOn N28747, the IDLE was set a
t 450rpm. -Never had any problems. -LyCon did my carb too.-=0A=0ABrin
g it here and I'll set it up for you.=0A=0AGary-=0A=0A=0AOn Saturday, Jul
y 26, 2014 9:00 AM, FLYaDIVE <flyadive@gmail.com> wrote:=0A =0A=0A=0AVery g
ood report Bill:=0A=0AThings that I would check - And these are NOT in orde
r of severity:=0A1 - Engine temps - Are you seeing high CHT's? -Does the
lower part of the engine/cowl feel hotter than normal. -Crazy thought - C
ould you be approaching vapor lock. -Yes. vapor lock can happen even with
AvGas.=0A2 - Mixture Cable - For smooth operation and full movement.=0A3 -
Mixture Cable - For mounting and cable supports.=0A4 - Throttle Cable - Sa
me as Mixture Cable above.=0A4a - With these checks you are also LQQKing fo
r unwanted movement - Too free a movement.=0A5 - Carb - Any air leaks - Mou
nting.-=0A6 - Carb Box - Any thing loose=0A7 - Carb Heat - Is it moving w
hen you do not want it to?=0A8 - Carb Heat Cable - You got it - For smooth
operation and full movement. For mounting and cable supports.=0A9 - Fuel Pr
essure - Is it dropping when you go to idle... -More than allowed, out of
the Green Arc?=0A10 - Air filter - Anything blocking the air filter.=0ANot
e: -I would NOT do any power off stalls until you solve this problem.=0A
=0APlease report back on what you find. -=0A=0ABarry=0A=0A=0A=0A=0A=0AOn
Sat, Jul 26, 2014 at 11:17 AM, Bill Chambers <metuna@earthlink.net> wrote:
=0A=0A =0A>Team Hi,=0A>-=0A>Need some insight/assistance into an issue we
are =0Ahaving with our , O-320, High Compression STC,Power Flow Equipped,
77 =0ACheetah.-After touchdown and roll out our engine will quit unless t
hrottle =0Ais cracked open a bit, (we fly out of KSGJ so basically a sea le
vel airport), no =0Aissues with restarting it. Typical scenario is on final
with power minimum =0A(throttle closed) , mixture full rich, carb heat OFF
.- After touchdown, =0Ausually while turning off runway, speed < 20 knots
(guess) and pulling off =0Athe runway the engine wants to quit (and has) u
nless some throttle is =0Aapplied.- Our mechanic has checked engine at lo
w idle RPM (normal range =0A(600-800?at idle).- Hes also checked the idle
cutoff rise at idle of ~ 50 =0Arpm.=0A>-=0A>The other day we ran at idle
after start for longer =0Athan normal with no problem. So this problem onl
y seems to appear after engine =0Ais hot and after touchdown.=0A>-=0A>Any
suggestions or experiences such as =0Athis?=0A>-=0A>Thanks=0A>Cheers,=0A
>Bill=0A>N26114 KSGJ=0A>st" target="_blank">http://www.matronics.com/Navi
gator?TeamGrumman-List=0Atp://forums.matronics.com=0A_blank">http://www.mat
=
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