Today's Message Index:
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1. 04:19 AM - Re: Engine run on when trying to stop. (FLYaDIVE)
2. 03:11 PM - Re: Engine run on when trying to stop. (Alan Carter)
Message 1
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| Subject: | Re: Engine run on when trying to stop. |
I swear, I have never heard of an engine with more reported issues than the
ROTAX. I was once told: "It is not the engine, it is the operators." But,
even then, shouldn't ROTAX design an engine to be at least somewhat idiot
proof?
My professor once said: The only way to make something idiot proof is to
remove the idiot. But, even then - Fifty million Frenchmen can't be wrong!
*Barry*
On Thu, Jul 4, 2013 at 11:36 AM, <Catz631@aol.com> wrote:
> **
> Dennis,
> I have had this problem for about a year (or more) now. I have done the
> carbs,gearbox shimming,fuel additives,new plugs,bore scoping cylinders for
> carbon deposits,high octane boosters/gas,shut down at higher rpms,gone to a
> lighter prop( which helped a little),etc..you name it I have done it ALL to
> no avail.( I thought I was the only one in the country with this problem)
> Now when my engine diesels ,it turns backwards about 3-6 revolutions.( my
> theory is that the prop stops at the peak of the"dogs" in the gearbox and
> it flips the prop backwards) As a result ,I have to do the valve check to
> make sure I don't have any air ingestion in the lifters (I have done it at
> least a dozen times and can do this check in my sleep now) I have never
> found any air, at least according to the tappet clearance check Rotax
> specifies.
> I thought about using Velcro to attach my cowl as it would come off easier
> during these checks ! (lol)
> However, I have not had this problem in the last few months because I have
> used a different shutdown method and it appears to be working well.
> I now pull the throttle back to about 1500 rpm,shut off one mag then pull
> further back to about 1000-1100 rpm then shut off the other mag. This seems
> to have solved my problem, even with a warm engine (mine never really gets
> hot in my radial nosed Kitfox)
> Prior to this method I would shut down at around 1800 rpm and then I
> might get the diseling on occasion.
> I know the gearbox doesn't like low rpm's but you are only there for a
> very short time before the engine quits.
> Give this a shot and see if it works for you.
> Please let us know.
> Dick Maddux
> 912 UL (400 hrs tt)
>
Message 2
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| Subject: | Re: Engine run on when trying to stop. |
Hi Barry.
I tend to agree with you, at 28000 to 30000 I expect better,
they seem to have got this wonderful reputation, but they are not so wonderful
in my opinion for that sort of money, but I guess there's not a lot of choice
out there.
Alan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=404010#404010
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