Asanders

Hey guys, any thoughts or techniques out there for a spinner back plate prop bolt hole that was drilled for a larger engine and is now being mounted on a smaller engine? (besides changing the engine [])

It is an aluminum spinner and it is now way out of balance when the engine is running, probably because I cant get it centered with the larger hole.

Thanks!

fw190

My Feedback: (37)

have you tried brass tubing that is cut to length?

Asanders

wow, never thought of that! and there are plenty of sizes around. Thanks! I appreciate that.

bigtim

My Feedback: (13)

most new spinners come with a bushing like the one fw190 described just finding the rite size that slips over the prop shaft and will take up the slack in the back plate is key the rest is easy

Asanders

Yeah, this is a huge spinner P-40 and it was drilled by the previous owner, no bushing. Would be nice to have one. I have a bunch of bushings for smaller spinners but they arent big enough for this engine.

big max 1935

My Feedback: (9)

I have a small lathe & make my own. Probably some local machinest could make you a spacer . Max H

Asanders

need to fly today so didnt have time to do the machinist. Thought about it all night and this morning used a wheel collar that fit the hole then drilled the collar hole a little larger for the bolt. We'll see if it works. Dont have time to test it home on way to field.

carlbecker

My Feedback: (3)

If you don't have spinner hole reducers brass tubing works very well. Unless you are precise drilling a hole in a collar it can be off center.

Asanders

thanks Carl, I ended up going with some brass tubing and it worked!

carlbecker

My Feedback: (3)

I usually do it that way for speed and in my experience accuracy on centering is good. I hate to say this but in a pinch I have also used tape[:@]