|
|
Russell Duffy wrote:
Message
On a standard day (rare in Florida) I might see 5000 - 5100. But
normally 4900 - 4950.
So let me get this straight, you're using a carb, and
have low compression, have 3 more inches of pitch, and are still
getting 100-200 more static rpm than me??? Good thing I don't have a
gas oven to stick my head in :-)
Hey, I've got three carbs! Anyway, I would have to go out and do a
static run-up to get current numbers.
My climb rate seems to be influenced by amount of fuel I carry.
Difference between 5 and 15 gallons is significant.
This is a good point, and may explain why I only got
1300 fpm the other day (completely topped off), when I was getting 1500
with the Warp (fuel level unknown). I'm almost afraid to ask, but
what sort of climb rate do you get?
Somewhere between 1500 and 2000 I guess. Haven't paid much attention to
it or done any real testing recently.
Did you get my prop numbers from Clark? The original numbers
were 68x74. Not sure what it is now.
I had these numbers from before, but have not asked
Clark. He did tell me that Tracy's old prop started out as a 70x73,
then was modified to 68x71. Did you ask for more rpm when you sent it
back for final tuning? If so, you are certainly at less than 74" pitch
now.
Main reason I sent it back (other than having it finished up) was a
wierd flexing problem somewhere between 4500 and 4700 RPM, that
limited my RPM - energy going into twisting-untwisting the prop. I know
he narrowed the tips, don't know about pitch.
Don't be too impressed with my numbers. Tracy and others make a big
deal out of recording performance numbers; I just like to fly...
We really should do a side-by-side comparison to see what's what.
Thanks,
Rusty (not a happy guy)
|
|