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  #1  
Old 19th March 2017
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Default Can someone report rpm ranges?

I don't run a tach on my '84 model. It's bone stock with the exception of an S&S Super E carb and open drag pipes. Can anyone give me an idea of what general rpm ranges I'd be at going 50, 55, 60, and 65 mph? I'm just curious, this does not need to be dead on. If you remember the next time you are out for a ride, will you make a mental note and look at your tach for me??

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Old 19th March 2017
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That would depend on the gear you have but I'd ay a bout 3 to 35 would be 50 to 60 mph on a normal bike.JMO
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Old 19th March 2017
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Quote:
Originally Posted by ezmerf View Post
That would depend on the gear you have but I'd ay a bout 3 to 35 would be 50 to 60 mph on a normal bike.JMO
I estimated 3 in fourth gear so that puts me in range. Thanks!!
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Old 19th March 2017
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What size front and rear sprocket are you running?
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Old 19th March 2017
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Running in 4th gear, regardless of sprocket sizes [within reason], your MPH is approximately equal to double the first two digits of the RPM ...

4000 RPM ~= 80 MPH
3000 RPM ~= 60 MPH
etc.
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  #6  
Old 19th March 2017
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Quote:
Originally Posted by IronMick View Post
Running in 4th gear, regardless of sprocket sizes [within reason], your MPH is approximately equal to double the first two digits of the RPM ...

4000 RPM ~= 80 MPH
3000 RPM ~= 60 MPH
etc.
Perfect, Thanks Mick!
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