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I fly with a Performance Prop 74x88 using the 2.85:1 RWS
PSRU - static with the combination on my 91 13B is 6000 rpm.
Ed
Sent: Sunday, August 01, 2010 12:26 AM
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.
Brian Trubee
-----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??
Bill
B
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.
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