You're on the right track ! I believe that Warp Drive
concluded that the culprit was 'higher compression' - since they
saw most failures on engines with compession ratios over 8 to 1.
The 160 hp Lycs have many more problems, at much lower hours -
and so did the high-compression Continentals.
I think they felt that the higher compression caused more
of a braking effect coming up on compression, and faster acceleration
after firing, both causing the blades to move slightly (or try to !).
This was mostly because of the light weight (and low intertia) of
the lighter W-D blades - so one solution was to add the extra
flywheel weight of the 'vibration dampers' to the flywheel.
Since the LOM has a very low compression ratio, it shouldn't
have a problem, so Scott doesn't likely have much to worry about.
I hope that new composite v-p prop from Australia (or NZ)
works out - it's a bit pricey, but might just be the answer.
.....bobp
-------------------------------orig.-----------------------------------
At 05:11 PM 12/10/02 -0900, you wrote:
-> "Knock on wood", my 70" three blade Warp Drive has survived for 7 years. =
-> 4 on a 100HP Lyco and 3 more in front of a 150 Hp Lyco. Still looks like =
-> brand new (or it would have been made into a wall ornament by now)!
-> Wayne
Do all Lyc 0-320s use the same amount of flywheel? And/or, might there be enf
pulse difference between the higher compression 160 HP 0-320s and the 150 HP 0-
320s to cause trouble or concern on the Warp hub?
-Ben Ransom
-> ----- Original Message -----=20
-> From: Walter Klatt=20
-> To: murphy-rebel@dcsol.com=20
-> Sent: Tuesday, December 10, 2002 8:32 PM
-> Subject: RE: REBEL PROPS?
->
->
-> Someone please correct me if I am wrong, but it is my understanding =
-> that there has never been an in-flight prop failure (as in throwing a =
-> blade) of a Warp Drive prop that is in stock configuration. I believe =
-> there have been some failures of Warp blades in other in-flight =
-> adjustable systems, but again not the stock Warp Drive propeller.
-> =20
-> I know a fellow locally who has the cracked collars on his Warp and he =
-> has put on over 300 hours since they first appeared and still believes =
-> it is safe. I check mine carefully with every pre-flight and since I =
-> don't have the cracks, I don't expect any sudden failure without ample =
-> warning.
-> =20
-> I am not defending or recommending the Warp Drive here, but just want =
-> to be sure my information is not outdated and I understand my own risks, =
-> since I still fly behind the prop.
-> =20
-> Walter
-> =20
-> =20
-> -----Original Message-----
-> From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com]On Behalf Of =
-> Legeorgen@aol.com
-> Sent: Tuesday, December 10, 2002 12:27 PM
-> To: murphy-rebel@dcsol.com
-> Subject: Re: REBEL PROPS?
->
->
-> Scott,
->
-> You should know if you don't already, Warp Drive will not even sell =
-> you a prop
-> (anymore) if they know you're putting it on a Lycoming. I had a =
-> conversation with the owner of Warp Drive two summers ago at AirVenture, =
-> when I was researching buying one for my Rebel because I liked the =
-> performance of the Warp Drive I had on my 912 Kitfox, and he told me =
-> this personally.=20
->
-> Even the possibility of a remote in-flight blade failure is not an =
-> experience you want to have. So, you have to ask yourself the question. =
-> Regardless of the performance figures, Is it worth putting a Warp Drive =
-> on your Lycoming? My answer is, of course not!
->
-> Bruce 357R=20
->
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