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Engine basics => Engine set up tips => Topic started by: Serge_Krauss on May 06, 2017, 10:34:00 AM

Title: Bushing a Prop
Post by: Serge_Krauss on May 06, 2017, 10:34:00 AM

I'm not sure this is the right section to ask, but...

What are you guys using to to reduce the diameter of a propeller hole, when it is too large for the engine's shaft diameter. Brass tubing? CF extrusion?... Thanks all!

SK

Title: Re: Bushing a Prop
Post by: George Truett on May 06, 2017, 01:37:52 PM

Jim Lee has 1/4" i.d. prop bushings in two different o.d.s, don't know if he offers any other sizes.

Title: Re: Bushing a Prop
Post by: Brad LaPointe on May 06, 2017, 03:46:48 PM

Duct tape .

Brad

Title: Re: Bushing a Prop
Post by: Dave_Trible on May 07, 2017, 12:58:35 PM

Serge I've used the telescoping aluminum K&S tubing from the hardware store.  May take two or three sizes to get you sleeved down.  A drop of cyA keeps the sleeves together when changing props etc. Trying to fill the hole and re-drill can be pretty hard to get perfect without some pretty fancy jigging.

Dave

Title: Re: Bushing a Prop
Post by: RandySmith on May 07, 2017, 01:50:36 PM

best, easiest  to use is  either spinner bushings, or  tubing, I just take aluminum tubing, roll a razor blade over it, and you can cut your own bushings in no time, different diameter tubes  will make it possible to bush most any prop

Randy

Title: Re: Bushing a Prop
Post by: Serge_Krauss on May 08, 2017, 09:03:35 PM

Thanks guys! I'm off tomorrow to replenish my stock of tubing.

SK

Title: Re: Bushing a Prop
Post by: Jim Kraft on May 17, 2017, 07:20:08 PM

A short piece of fiberglass arrow shaft works to go from 1/4" to 5/16".

Title: Re: Bushing a Prop
Post by: Target on May 23, 2017, 11:16:07 PM

How about some fuel line?
I've heard it used for 1/2A's, but as long as the prop stays on center as you get the nut tight, you should be good, especially if the thrust washer has a not too sloppy fit to the shaft.