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Uh oh, good thing Ed helped me get that 20B powered RV-8 project moving.

 

Tracy (shooting for 4000 fpm)

----- Original Message -----

From: Russell Duffy

To: Rotary motors in aircraft

Sent: Friday, January 21, 2005 1:49 PM

Subject: [FlyRotary] monster prop shrinking a bit

Greetings,

 

 

I talked to Clark at Performance Props today.  I’m going to go ahead and send my prop in for final finishing, since the engine is down anyway.  I reported that I’m currently getting 6000 rpm at 100 mph in climb, and 6800 rpm at WOT 8000 ft.  I requested 6500 rpm in climb, which will make top RPM about 7300 WOT at 8000.  He’s got to run the number, but the rough estimate is that the prop will change from it’s current 74”x88” form, to about 72”x82”.   He seemed very excited about what this will do for my performance, in both climb and cruise. 

 

I told him I need a guarantee that it will beat Tracy :-)   Seriously, I told him that I was getting 2400-2500 fpm climb now, and wanted 3000 fpm. He seemed pretty sure this change can get me there :-) 

 

Cheers,

Rusty (Tracy's going down)