Thanks Colin;
I had a prop of lesser pitch and less length and just couldn't get the
plane to perform. Got a great prop from Jeff in NM and it worked like a
dream. Then I had a nose gear failure and the prop got broken. I would
like another like it, or if it were a bit more pitch I would like to try it,
as I was able to turn it okay. Jim
----- Original Message -----
From: "Colin Rainey" <[email protected]>
To: "KRnet" <[email protected]>
Sent: Sunday, December 24, 2006 1:48 AM
Subject: KR> New Prop
> Jim said:
> I ned a new prop 60 x 65 or more pitch
>
> Jim are you sure you need more pitch? Is your climb rate really good, and
> you are over rpm at cruise? I ask because I read an article/post not long
> ago by someone, possibly a netter that made some very good points about
> improper prop evaluation due to low performance. This post/article talked
> about how it seems more pitch is always recommended, but not always
> correct.
> Sometimes to get the performance desired, less pitch, and possibly even
> more
> or less length is needed. If the disc area is too great for the engine to
> spin up, than low rpm will result. If too high a static rpm, and cruise
> rpm
> is being seen, then typically a longer prop same pitch or same length and
> more pitch is the answer. Check multiple sources. Netters talk about Ed
> Sturba; Valley Engineering/Culver Props is another; Mark L. and others
> have
> had great success with Sensenich (though they are pricey). It never hurts
> to check Ebay either. I got a good prop from another builder there, and
> was
> very happy with it. Best of all the price was great!
>
> Colin Rainey
> [email protected]
>
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