Jerry Bass wrote:

Now I get a strong 1200 fpm climb at 6600.  Full throttle at level is 155kts
[178 MPH] or better at 7500.  Noisy though.

Something wrong. You should be doing over 200 MPH like Ian as you both
have 2.85:1 gear boxes and RV6A's. With more climb as well. In theory the
single pipes should be around 30 inches give or take a few. Perhaps your prop
has something to do with it.

Paul Lamar

Are you sure he wasn't refering to 155 kts in the climb?
Something would be wrong if that was the level speed.

Dennis.

Dennis Hawkins (n4mwd@amsat.org)

He said "at level". Sounds to me his prop might be under pitched.
Ian are you there? What is your prop diameter and pitch again?

Paul Lamar

Jerry Bass wrote:

Thanks for coming back. I have so many holes in my cowl that I have too much drag. With the origonal RV6 cowl I got 168 kts with the first prop 76" pitch, by 68" dia.  The added drag of my nose is slowing me down. I will rebuild the nose soon.

Jerry Bass
540-932 3125
Cell 241-2675

 
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