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Unread 14-02-2012, 08:52
jwakeman jwakeman is offline
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Re: Determining Motor Speed?

Quote:
Originally Posted by 45Auto View Post
Our dual 775's running through cim-u-laters freespin our 8" wheel up to just over 3600 RPM, as measured with a photo-tach. Works out to about 125 fps, or 85 MPH.
Am I doing my calculation incorrectly? For 3600 rpm with 8" wheel I got 40 fps.

(3600 / 60) * (8/12) = 40


Quote:
Originally Posted by 45Auto View Post
We're using a high angle fixed hood
We are also using a hood with a fixed angle of 65 degrees.