Today's Message Index:
----------------------
1. 06:05 AM - Re: reverse prop rotation at shut down (Catz631@aol.com)
2. 07:47 AM - Re: reverse prop rotation at shut down (Ricardo Urio)
3. 03:19 PM - 582 parts (jerry evans)
Message 1
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| Subject: | Re: reverse prop rotation at shut down |
Roger,
I had the gearbox disassembled and re shimmed about 65 hrs ago. It didn't
make any difference at all, it still goes backward sometimes.
For what it is worth, the engine is a mid 90's 912 UL with about 350
hrsTT.
The only thing that appears to help is to pull the throttle back until
the engine sounds like a "grinder' (not good on the box I am sure) around
1000 rpm and then shut it down .
The much lighter Kiev (vs Warp) really reduced these events though. The
last one was my fault as I shut down about 1400 rpm.
Why hasn't it sucked air into the lifters so far ? It turns backwards at
least 3 full revolutions. They told us in all my Rotax classes to never turn
the prop backwards or this could happen. I have had the reverse business
at least 10 times and on each occasion I have done the valve check and it
never caught any air in the valves. Oil filter analysis doesn't reveal any
metal either.
I do like to work on engines,airframes ,etc which is a good thing cause
the Rotax has given me a lot of practice and I learn more about it. This
engine is a mystery in many ways requiring research and advice from gurus such
as yourself (which I thank you for !) I am sure that if I had a younger
engine I would not have the problems that I do.(broken coil wires,old HD
wires,spark plug caps,etc)
I am still adverse to taking my plane on a long trip though as there
would be little to no support if the engine decides to act up again. We do
have a guy here in Pensacola that flys his CT back and forth to the West coast
and thinks nothing of it. An AI friend of mine(with my assist) help to
maintain it for him and it has been very reliable.
By the way,I was able to get new NGK plug caps for $6.30 each vs the
almost $50 Rotax wanted. They are the same part number. Overall I saved about
$500 on my plug harness replacement and it did solve my misfire problem. The
engine runs even smoother now !
Dick Maddux
Rotax 912UL
Kitfox 4
Message 2
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| Subject: | Re: reverse prop rotation at shut down |
It=B4s like autoignition. Maybe a hot point inside engine can do it, like
excessive carbonization, of a incomplete very rich burn, or maybe wrong
spark plugs. Have you tested your magneto switch to see if it is grounding
appropriately the magneto wire ?
Ricardo Urio
2013/1/22 <Catz631@aol.com>
> **
> Roger,
> I had the gearbox disassembled and re shimmed about 65 hrs ago. It didn'
t
> make any difference at all, it still goes backward sometimes.
> For what it is worth, the engine is a mid 90's 912 UL with about 350
> hrsTT.
> The only thing that appears to help is to pull the throttle back until
> the engine sounds like a "grinder' (not good on the box I am sure) around
> 1000 rpm and then shut it down .
> The much lighter Kiev (vs Warp) really reduced these events though. The
> last one was my fault as I shut down about 1400 rpm.
> Why hasn't it sucked air into the lifters so far ? It turns backwards at
> least 3 full revolutions. They told us in all my Rotax classes to never
> turn the prop backwards or this could happen. I have had the reverse
> business at least 10 times and on each occasion I have done the valve che
ck
> and it never caught any air in the valves. Oil filter analysis doesn't
> reveal any metal either.
> I do like to work on engines,airframes ,etc which is a good thing cause
> the Rotax has given me a lot of practice and I learn more about it. This
> engine is a mystery in many ways requiring research and advice from gurus
> such as yourself (which I thank you for !) I am sure that if I had a
> younger engine I would not have the problems that I do.(broken
> coil wires,old HD wires,spark plug caps,etc)
> I am still adverse to taking my plane on a long trip though as there
> would be little to no support if the engine decides to act up again. We d
o
> have a guy here in Pensacola that flys his CT back and forth to the West
> coast and thinks nothing of it. An AI friend of mine(with my assist) help
> to maintain it for him and it has been very reliable.
> By the way,I was able to get new NGK plug caps for $6.30 each vs the
> almost $50 Rotax wanted. They are the same part number. Overall I saved
> about $500 on my plug harness replacement and it did solve my misfire
> problem. The engine runs even smoother now !
>
> Dick Maddux
>
> Rotax 912UL
>
> Kitfox 4
>
> *
>
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> *
>
>
Message 3
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I have a C- box with 150 hr on it in great shape $600 a pair of bing 54 carbs
with carb heat $250 a new IVO med prop two blade with10 hr , oil injector,
plated exhaust system, CDI also a BRS parachute let me know if anyone want
anything 530-228-5185 or kitfox555@sbcglobal.net
Jerry Evans
KitfoxII
Magalia Calif.
N582'er'
kitfox 555
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