The Murphy Builders Site

G'day Wayne & Fellow builders ...

As most of you know , if I recently bent our Rebel - trying a little
bit too hard to win a spot landing competition :o( .... But with the
help of Walter and Julius I am on the road to repairs and recovery

I have a question for Wayne and any others with helpful ideas

when the left leg collapsed the propeller hit the deck - shearing off
the tips of both ends
(the propeller was wooden , and the engine was at idle when it hit )

I found enough pieces of the propeller to glue it back to gether - and
this was good enough to use as a template to carve another propeller
from it

some people say that I must bulk strip the engine as it has had a
propeller strike .... others say this is not necessary as the propeller
was wooden

I asked a friend (aircraft engineer ) - who knows many of the Lycoming
people for his opinion and he said that Lycoming would "sit on the
fence" if pushed for something in writing

using common sense , I have put I a run out gauge on the crankshaft and
it has absolutely no deviation at the flange - so, to me, I consider
that there is no need to bulk strip the engine

Now, here is my question :
how many of you out there have had a similar situation .... and what
was the outcome of your dilemma

(I have been asked to write an article for our national sport aircraft
magazine on how I dealt with the aftermath of the accident and the steps
I took to put the plane back in the air - keeping everything to legal
and above board )

under the rules of the experimental category , as the builder of the
aircraft , I am allowed to repair and modifying the plane as I see fit
.... but the engine becomes a bit of a grey area !?!

any ideas / and suggestions would be gratefully received

Rick Harper
541R



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Thanks Wayne ... that's the kind of thing I wanted to hear

My argument is going to be "common sense" VS bureaucracy & bullshit !
.....

Rick
----- Original Message -----
From: Wayne G. O'Shea
To: rebel-builders@dcsol.com
Sent: Thursday, October 06, 2005 9:32 AM
Subject: Re: Lycoming crankshaft / prop strike


Can't help you on your Ozzy air reg rules...but in Canada considering
we can
take an engine from a crashed cherokee and throw it on our homebuilt
without
even bothering to dial check the crank...common sense rules in the
interest
of (your own) safety.

I would suggest that taking the tips off a wooden prop and having a
Zero
runout dial check you are good to go. I've seen three METAL prop
strikes now
where the $$$$'s was spent for tear down and nothing (relating to the
prop
strike) was found wrong with any of the engines.

Wayne




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G'day Wayne & Fellow builders ...

As most of you know , if I recently bent our Rebel - trying a little
bit too hard to win a spot landing competition :o( .... But with the
help of Walter and Julius I am on the road to repairs and recovery

I have a question for Wayne and any others with helpful ideas

when the left leg collapsed the propeller hit the deck - shearing off
the tips of both ends
(the propeller was wooden , and the engine was at idle when it hit )

I found enough pieces of the propeller to glue it back to gether - and
this was good enough to use as a template to carve another propeller
from it

some people say that I must bulk strip the engine as it has had a
propeller strike .... others say this is not necessary as the propeller
was wooden

I asked a friend (aircraft engineer ) - who knows many of the Lycoming
people for his opinion and he said that Lycoming would "sit on the
fence" if pushed for something in writing

using common sense , I have put I a run out gauge on the crankshaft and
it has absolutely no deviation at the flange - so, to me, I consider
that there is no need to bulk strip the engine

Now, here is my question :
how many of you out there have had a similar situation .... and what
was the outcome of your dilemma

(I have been asked to write an article for our national sport aircraft
magazine on how I dealt with the aftermath of the accident and the steps
I took to put the plane back in the air - keeping everything to legal
and above board )

under the rules of the experimental category , as the builder of the
aircraft , I am allowed to repair and modifying the plane as I see fit
.... but the engine becomes a bit of a grey area !?!

any ideas / and suggestions would be gratefully received

Rick Harper
541R



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username "rebel" password "builder"
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List administrator: mike.davis@dcsol.com
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