REFLECTOR: MT Prop failure mode? - Resolved

Bernard Despins bdespins at telusplanet.net
Wed Nov 19 15:29:56 CST 2008


The way I see it, given a certain RPM, MAP is a measure of engine load.  
No prop, no load.

I just can't figure out why a rag in the induction  system would lead to 
high engine RPM.  I can see it causing low MAP, but I would think that 
if the engine is starved for air, it would not be able to develop any 
kind of RPM (it would be like throttling back).

I am definitely going to consider adding some kind of fiber lock nut as 
you suggest.

Thanks again for the help.

Bernard Despins

davedent at comcast.net wrote:
> On my Vesta prop they use one Fiber Lock Nut for the stop.  Being 
> experimental, I don't see any reason why you couldn't use a fiber lock nut 
> as well instead of two jam nuts.  Just a thought.  But I haven't had a 
> problem with mine coming loose on either of my MT props.
> I'm glad you found the problem, but I can't see the low MAP at the same 
> time.  See if the MAP comes up with the  greater pitch.
> Dave 
>
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