I fly an SR-2500 with a continental O-470-S with a McCauley S-90AT-8 on a C-50 hub. This is replaced by a C203 hub. I get a 136 mph cruise at 23^2.
This gives you an idea of performance, but you want to ensure you go with a tested propeller, engine combination (i.e. look at all the propellers that go with a O-540 engine on certified airplanes). Personally, I would not use an untested engine/propeller combination as you are running an experiment without the use of a test stand and reams of test equipment and a healthy engineering budget. There can be detrimental vibration issues with untested combos.
Regards,
Tom Tonner
From: jfolkerts1@gmail.com
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Which Propeller for the SR2500
Date: Tue, 7 Dec 2010 17:20:58 -0600
I've just started work on my SR2500. It will be powered by a Bob Barrows
built O-540, normally aspirated. With a goal of economical cruise, which
model Hartzell 2-bladed prop should I be looking for? Or, does anyone have
any experience with a MacCauley Brown? Or other propeller manufacturers?
Thanks,
Jerry Folkerts
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