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  #11  
Old 12-17-2010, 09:43 PM
Daver Daver is offline
 
Join Date: Nov 2006
Location: Albuquerque
Posts: 297
Default engine de-rating

PHP Code:
Eggenfellner claims 160 HP for our motorThis is also what Subaru claims for that engineWe don't spin it fast enough to get that and with the intake manifold it probably wouldn't get that anywayWe estimate we are getting 140 to 150 HP at 5000 RPM
My 150 HP Lycoming has a dual rating: 150@2700 and 140@2450.

Given that my prop won't spin much faster than 2450, I've really got a
140 HP -RV9A.

I don't think I'll change a thing...

Dave
-9A
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  #12  
Old 12-18-2010, 09:27 AM
tclaire tclaire is offline
 
Join Date: Nov 2005
Location: Rayville Mo Midland Tx
Posts: 74
Default 4 hr trips

i usually see 150 knots at 9 to 11 thousand feet at 6.5gph with a 0320 with fixed pitch mt prop turning 2350 to 2400 rpm
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  #13  
Old 12-18-2010, 11:49 AM
simpkinsona simpkinsona is offline
 
Join Date: Dec 2010
Location: Vacaville, CA
Posts: 167
Default

To me this is one of the things that impresses me most about the RV-9. You can get excellent performance from a lower power engine.

-Andy
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  #14  
Old 12-18-2010, 03:08 PM
kgood kgood is offline
 
Join Date: Mar 2009
Location: Boulder City, NV
Posts: 165
Default WAM 120 performance

In Sept, I flew from Boulder City, NV (Las Vegas) to Eugene OR, Average speed: 160 mph TAS, avg fuel burn 5.0 gph. 8500'.

This is been typical for my plane, RV9 (TW), with Wilksch WAM 120 diesel. 205 hours so far, trouble free.

Kurt
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  #15  
Old 12-18-2010, 05:24 PM
N941WR's Avatar
N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 12,887
Default

With the 135 HP O-290-D2 I would cruise it all day at 140 knots (165 mph) TAS and ~64% power. That was on the 2600 RPM redline and a climb prop.

Wide open, I could get it up to 151 knots (178 MPH) TAS but I was turning 2870 RPM to do it. (That engine has a 2800 RPM limit for five minutes, 2600 RPM continuous.)

As soon as I start flying with the O-360 and cruise prop, I'll post those numbers.
__________________
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
www.repucci.com/bill/baf.html
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