Today's Message Index:
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1. 04:43 AM - Re: 1st Engine Start (Catz631@aol.com)
2. 08:44 AM - Re: 1st Engine Start (Patrick Reilly)
3. 08:25 PM - Re: 1st Engine Start (James Shumaker)
Message 1
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| Subject: | Re: 1st Engine Start |
Guy,
You can increase the prop pitch about a degree I believe to get the
proper 5200 rpm. I get about 5300 WOT on my take off roll (close enough) I have
a Kiev but used to have a Warp taper tip. (hanging on the wall now)
Your warm up time is about the same as mine. I don't have a thermo so I use
tape on my radiator in addition to cockpit controllable shutters. It works
fine. Takes me about 5 minutes before I get 120 on my oil temp and that
equates to about 170 or so on the water temp.I usually run about 180 on the
water temp in the air but with the shutters I can squeak it a little
higher.(shutters on the oil radiator also)
My idle is set about 1600 or so although I manually keep it at 1800 on
the ground for the gearbox. If you can set your idle at 1400 it would
probably make for a better and more controllable approach. The air load increases
the idle and It is difficult to get the airplane on the ground with the
idle set too high. If it is too low then the engine might quit on final.
(happened to me 3 times) Once you fly the airplane ,you will have to do some
tweaking. Sounds like you are in the ballpark though.
It is 0630 down here in hot,humid,flat,miserable Florida. I think I will go
fly before it hits 95. (75now) Glad you suggested that ! Sounds like
coffee and a breakfast sandwich at the local store enroute.
Have fun
Dick Maddux
Fox 4, 912UL
Message 2
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| Subject: | Re: 1st Engine Start |
Guy, I run a 582. But, you would increase the degree of prop pitch to lower
the static rpm. Try another 1/2 a degree, which would bring you to 13
degrees, and see what happens.
Pat Reilly
Mod 3 582 Rebuilt
Rockford, IL
On Thu, Jun 11, 2015 at 10:41 PM, Michael Logan <michaellogan41@gmail.com>
wrote:
> Guy,
>
> What did you do to the Kitfox that took you four years? I am deep into
> the eighth year. I started the engine about three years ago but have been
> rebuilding building the cowling to fit the new gearbox since then.
> Currently building a hangar and house so I do not see getting the plane
> flying this year.
>
> Mike Logan
> Series 5 EA81
>
> On Thu, Jun 11, 2015 at 6:00 PM, Guy Buchanan <gebuchanan@cox.net> wrote:
>
>> Woohoo! 1st engine start in four years. Just got the 912s running today.
>> I didn't do much since I didn't bring any hearing protection but I did
>> generate some questions:
>>
>> 1. At 12.5d at the tip of a 70" Warp taper tip I'm getting 5500 rpm
>> WOT. Any guesses on what I should try next to get 5200?
>> 2. It took FOREVER for the temperature to come up and the most I saw
>> was CHT 175F and oil temp 170F. (5 minutes run time.) I have a water
>> thermostat. I'm contemplating the oil thermostat but will wait for more
>> testing. My thermostat is 190F, so I expected the radiator to be cold, but
>> it wasn't, indicating that the water temperature was probably much higher
>> than 175F. My question is: should I run water temperature and pressure? I'm
>> thinking I could incorporate these into the thermostat manifold. (It's
>> downstream of the water spider.) Is it worth the hassle? (Particularly
>> water temp, which Rotax says I MUST have for the regular coolant I'm
>> running. I've got a GRT 2000 engine monitor so the display part is easy.)
>> 3. I'm idling at about 2200. What should I use for us Kitfoxers?
>> (Manual says 1400. Is that possible?)
>>
>> Thanks in advance for the consideration. Looking forward to flying when
>> my cowl gets done.
>>
>> Guy Buchanan
>> Ramona, CA
>> Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
>> Now a glider pilot, too.
>>
>>
>> *
>>
>> arget="_blank">http://www.matronics.com/Navigator?Kitfox-List <http://www.matronics.com/Navigator?Kitfox-List>
>> tp://forums.matronics.com <http://forums.matronics.com>
>> _blank">http://www.matronics.com/contribution <http://www.matronics.com/contribution>
>>
>> *
>>
>>
> *
>
>
> *
>
>
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
Message 3
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| Subject: | Re: 1st Engine Start |
Hi GuyThe slower the idle the shorter and easier the landing.=C2- That be
ing said, it is difficult to get the engine to idle smoothly at 1400.=C2-
I set it to idle as close to 1400 as it would run smoothly.=C2- To reall
y land short you can set it to stop at idle,=C2-but then you have to be a
little more=C2-careful with the throttle on landing.
5 minutes doesn't sound like a long time to get the temps up and then it ne
ver got over 175 for me unless I was flying and 195 took warm weather.=C2
- I used the water temp sensor (in the spider)=C2-for a few years and t
hen changed to the cylinder head temp...which is basically the water temp a
t that location as I understand it.
Was that a static rpm?=C2- If so the engine will likely reduce=C2-rpm w
hen you start accelerating.=C2- I believe I was running closer to 10.5 de
grees, but its been a couple of years.=C2- The taper tip Warp drive seems
to=C2-lose grip when static and then=C2-when run up to a higher rpm.
=C2- It will catch, slow down a bit and then come back up as you accelera
te above stall.=C2- The only way I found to set it is to fly.=C2- I lik
ed 5800 WOT at sea level max rpm.
Jim ShumakerKitfox III 912 ul for 12 years.
Citabria 7GCAA 150hp=C2-
=C2-
On Friday, June 12, 2015 8:49 AM, Patrick Reilly <patreilly43@gmail.co
m> wrote:
Guy, I run a 582. But, you would increase the degree of prop pitch to lowe
r the static rpm. Try another 1/2 a degree, which would bring you to 13 deg
rees,=C2-and see what happens.
Pat ReillyMod 3 582 RebuiltRockford, IL
On Thu, Jun 11, 2015 at 10:41 PM, Michael Logan <michaellogan41@gmail.com>
wrote:
Guy,
What did you do to the Kitfox that took you four years?=C2- I am deep int
o the eighth year.=C2- I started the engine about three years ago but hav
e been rebuilding building the cowling to fit the new gearbox since then.
=C2- Currently building a hangar and house so I do not see getting the pl
ane flying this year.
Mike LoganSeries 5 EA81
On Thu, Jun 11, 2015 at 6:00 PM, Guy Buchanan <gebuchanan@cox.net> wrote:
Woohoo! 1st engine start in four years. Just got the 912s running today.
I didn't do much since I didn't bring any hearing protection but I did gene
rate some questions:
- At 12.5d at the tip of a 70" Warp taper tip I'm getting 5500 rpm WOT.
Any guesses on what I should try next to get 5200?
- It took FOREVER for the temperature to come up and the most I saw was
CHT 175F and oil temp 170F. (5 minutes run time.) I have a water thermostat
. I'm contemplating the oil thermostat but will wait for more testing. My t
hermostat is 190F, so I expected the radiator to be cold, but it wasn't, in
dicating that the water temperature was probably much higher than 175F. My
question is: should I run water temperature and pressure? I'm thinking I co
uld incorporate these into the thermostat manifold. (It's downstream of the
water spider.) Is it worth the hassle? (Particularly water temp, which Rot
ax says I MUST have for the regular coolant I'm running. I've got a GRT 200
0 engine monitor so the display part is easy.)
- I'm idling at about 2200. What should I use for us Kitfoxers? (Manual
says 1400. Is that possible?)
Thanks in advance for the consideration. Looking forward to flying when my
cowl gets done.
Guy Buchanan
Ramona, CA
Kitfox IV-1200 / 912-S / Warp 3cs / 500 hrs. and grounded
Now a glider pilot, too.
arget="_blank">http://www.matronics.com/Navigator?Kitfox-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
arget="_blank">http://www.matronics.com/Navigator?Kitfox-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
--
Pat Reilly
Mod 3 582 Rebuild
Rockford,IL
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