|
|
Brian,
They can correct me, but I think
that both Ed and Tracy are getting about 5800-6000 rpm static with a 74 X 88
prop made by Performance Props. The Catto should probably be similar.
Bill B
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of bktrub@aol.com
Sent: Sunday, August 01, 2010
12:26 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Prop
Selection
I've run the engine up to ~4500 RPM. I
don't have a turbo. I think I could get a few more hundred RPM out of it,
but I have not run the throttle to the stop, I think. I hope to have it
up in the air by the end of August.
-----Original
Message-----
From: Bill Bradburry <bbradburry@bellsouth.net>
To: Rotary motors in aircraft
<flyrotary@lancaironline.net>
Sent: Sat, Jul 31, 2010 7:49 pm
Subject: [FlyRotary] Re: Prop Selection
Have you run the engine yet, Brian? If
so, what is your max static rpm? I don’t remember if you have a
turbo??
I have a 74 x 88 Catto two blade on my
RV-4, with a 13BREW & 2.85 redrive. I haven't flow it yet, but I
think it will be a good prop. Catto makes good props.
I am now Prop shopping for my RV-9 13B
with the 2.85 RD1-C and am leaning towards a Craig Catto prop. Craig has
recommended a 3 bladed prop 70" X 88". He says that a 2 bladed
76"X 88" prop would have to be 7 inches wide at the root and 3.5
inches wide at the tip, the three bladed prop would have a thiner look to it.
Three bladed prop looks good sitting on the ramp, but nobody sees the prop
when it is spinning. Ground clearance might be a problem with the
76" prop. Not sure, I have not taken a measurement on this as
yet.
What other venders would the group
recommend? I would like to hear some opinions.
|
|