prop clearance.

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fireballflyer
Posts: 2
Joined: Wed Apr 08, 2009 7:18 pm

prop clearance.

Post by fireballflyer » Wed Sep 19, 2012 6:15 pm

Anyone know what's the nearest recommended distance an engine accessory can be to the rear of the prop disc? ie, How much allowance should be made so the prop does not strike the accessory?
Harry Haigh
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Rob Swain
Posts: 393
Joined: Tue Jan 08, 2008 2:11 pm

Re: Prop clearance.

Post by Rob Swain » Thu Sep 20, 2012 2:31 pm

No idea, but I would guess a little more info may help!

Pusher or tractor configuration?
Construction of prop (aluminium, wood, composite)?
Fixed pitch or variable pitch? If latter Ground or in flight adjustable?
Type of aircraft?
Are cowlings involved at all?
Rob Swain
If the good Lord had intended man to fly, He would have given him more money.

fireballflyer
Posts: 2
Joined: Wed Apr 08, 2009 7:18 pm

Re: prop clearance.

Post by fireballflyer » Thu Sep 20, 2012 6:01 pm

Thanks for your reply.Details as follows:-Tractor, fixed, wood, jodel ,cowlings not an issue.engine C65.I have seen figures of 1/8 inch at tip run out being the limit so I would have thought 1/4 inch ok at 8 inch radius from centre of prop hub.
Harry Haigh
029469

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