True, but I've heard (only) that the new wood props the Sensenich boys have are more efficient than the ones built 50 years ago. Something to do with the new glues and such.
This would be a good question to ask them at OSH. With LSA starting to generate cash maybe we can look forward to a composite prop! Al DeMarzo Visit the Ercoupe Swap Page Free, Easy and No Membership Required http://www.ercoupeowners.com/swap/swapbook.htm ----- Original Message ----- From: Roy Stubbs To: heavensounds ; [email protected] ; Richard Green Sent: Sunday, June 08, 2008 8:34 PM Subject: RE: [ercoupe-tech] Props Wood props are inefficent compared to simarily spec'd metal props. They noticeably underperform in side-by-side competition all else being equal. Far outweighs any weight advantage. I cannot speak to the exact engineering reasons other than the wooden prop cannot be built to the same tolerances as a metal prop, but I have experienced it first hand in formation flight demonstrations. Roy ------------------------------------------------------------------------------ From: [email protected] on behalf of heavensounds Sent: Sun 6/8/2008 7:36 PM To: [email protected]; Richard Green Subject: Re: [ercoupe-tech] Props For one, the wood prop is lighter. Can carry a bit more fuel or a bit more fat. Eliacim ----- Original Message ----- From: Richard Green To: [email protected] Sent: Sunday, June 08, 2008 4:06 PM Subject: [ercoupe-tech] Props Since I am rebuilding my Coupe's engine over the next few weeks I wanted to overhaul the prop and engine mount as well. Any recommendations for a good shops for those services? Any advantages to wood props besides the appearance piece? By the way, thanks to all for the advice on the control syste. Ujoints made all the difference. Feels like factory new controls now!
