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Re-pitching

Stuka Stunt Main Forum · 5 of 5 known posts recovered

VonKobelt · Feb 15, 2004 07:56 PM

Re-pitching#0 source
Can someone please tell me the best technique for re-pitching carbon props?
Thanks.

VonKobelt

LNeumann · Feb 15, 2004 09:08 PM

RE: Re-pitching#1 source
>Can someone please tell me the best technique for
>re-pitching carbon props?
>Thanks.

the *best* technique? That opens a can of worms. There are probably7 as many techniques as there are props. some do only the tips. May be alright if you only need a little. Some move only the hub. May be all right if you only need a little. We do the whole prop starting at the hub and moving out. Since it is hard to do every station, we usually do just the hub, somewhere in the middle, and then towards the tip. We also add just a little to the tip. Just slightly more than the rest of the prop. Some keep it even. Some do less at the tip. I never did understand less. We heat with a monokote type gun (or paint stripper). A hair dryer is not enough heat. We also heat until you can actually feel the threads move inside. Then you get a permanent set. Others will use hot water. Heat the hole blade first. The less and less as you move each station. Trouble with hot water is it can undo anything you have previously done. With the heat gun you heat only the station where you want to move it. We also clamp the guage at the pitch we are seeking. We heat the blade, then lay it on the guage twisting it to the desired position. This is easier than moving it and checking. I have always wanted to build a guage with three separate stations. Then one could pin the guage at each station where you wanted it and do the whole blade at one time. Don't know how well this would work, but it sounds good.

OK, I said my piece. Now someone else can come in with their "best" technique.

Leonard Neumann

Howard Rush · Feb 16, 2004 12:29 AM

RE: Re-pitching#2 source
"Heat the hole blade first."

Leonard, does this have something to do with the way you balance props?

LNeumann · Feb 16, 2004 02:20 AM

RE: Re-pitching#4 source
>"Heat the hole blade first."
>
>Leonard, does this have something to do with the way you
>balance props?

You caught me, Howard. Now you know my secret. And when the blade is too big, you see some people snipping off the tips to make it shorter. I just cut little holes in the blades which allows me to still swing big props. And it also makes me feel a little more righteous when I know that I have a holy prop. (Check the time on this post. I think I just left all my "W"s in the humor section.)

Leonard Neumann

Randy · Feb 16, 2004 01:39 AM

RE: Re-pitching#3 source
Hmm, I use a heat gun. Other's use boiling water.

Randy Powell