gear change - CLASS RACER FORUM

07-20-2021, 07:27 AM	#6
Ray Gottry Junior Member Join Date: Feb 2019 Location: Lake City, Fl. Posts: 61 Likes: 104 Liked 68 Times in 24 Posts	Re: gear change RPM X C _______ = MPH G X 1056 MPH X G X 1056 ______________ = RPM C MPH X G X 1056 _____________ = C RPM RPM X C ____________ = G MPH X 1056 RPM = REVS PER MINUTE C = TIRE CIRCUMFRUNCE (UNLOADED) G = GEAR RATIO MPH = MILES PER HOUR You can move the numbers around in the formulas to tell differences of changes. Has worked great for me. Not real scientific but fun.

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