What is my RPM for any given speed/gear?

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Jan 29, 2010 | 03:07 PM

#11

paul s

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Joined: May 2008

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From: la

http://bigboyzheadporting.com/Gearratio.htm

Jan 29, 2010 | 03:13 PM

#12

cadman311

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From: DUNDALK,MARYLAND

that's a better chart

Jan 29, 2010 | 03:21 PM

#13

DGDyna

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Joined: Oct 2007

Posts: 463

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From: Buffalo, NY

Quote:

Originally Posted by bamorris2

Tire diameter is 25.213"

To get a measurement that accurate you must have some big *** calipers!

Jan 29, 2010 | 03:24 PM

#14

cadman311

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From: DUNDALK,MARYLAND

tape measurement

Jan 29, 2010 | 04:46 PM

#15

BlackFLHR

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Joined: Oct 2008

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From: California

Quote:

Originally Posted by DGDyna

To get a measurement that accurate you must have some big *** calipers!

ROFL... I got that from an online tire calculator.

Jan 29, 2010 | 05:18 PM

#16

mastery

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From: Indiana

So, you get all these specs and numbers...gonna pull out the calculator while you are riding?

Jan 29, 2010 | 06:09 PM

#17

BlackFLHR

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From: California

Quote:

Originally Posted by mastery

So, you get all these specs and numbers...gonna pull out the calculator while you are riding?

Heck no. I'm not gonna use a calculator for this! I'm setting up an Excel spreadsheet. So all I have to do is input my MPH, and it'll tell me what my RPM's are. I'm planning on rigging up a 17" HP laptop to my handlebars. And with my voice recognition input, I'll just speak my MPH, and it'll automatically show me my RPM's. Just seems easier and more cost efficient than installing a tach.