MPH vs RPM - Kawasaki Vulcan Forum : Vulcan Forums
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post #1 of 42 (permalink) Old 11-08-2016, 09:33 AM Thread Starter
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MPH vs RPM

Anyone with a stock bike and a tach that can provide me some info? I have a stock 900 Classic LT with stock tires, etc. If my speedometer says I am doing 60, what are my RPMs? What if I the speedometer says 70, or 80? Yes, the easiest way to determine this is to purchase a tach, and that is on the wish list, but until then...

Thx, Rob

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post #2 of 42 (permalink) Old 11-08-2016, 04:53 PM
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70 MPH = just about 4100 RPM's.

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post #3 of 42 (permalink) Old 11-08-2016, 04:58 PM Thread Starter
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Bandit, thanks. That gives me an idea of the RPMs I am running on the freeway.

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post #4 of 42 (permalink) Old 11-09-2016, 12:06 PM
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Depends on what gear you are in!
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post #5 of 42 (permalink) Old 11-09-2016, 12:19 PM Thread Starter
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Bubba, at 70 mph I better be in fifth gear! :-)

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post #6 of 42 (permalink) Old 11-09-2016, 04:56 PM
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Originally Posted by NorCalRob View Post
Bubba, at 70 mph I better be in fifth gear! :-)
Although she will easily run up to 70 MPH in fourth.

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post #7 of 42 (permalink) Old 11-09-2016, 05:16 PM
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You may already be familiar with this site, but if not, hopefully it will help you out.

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post #8 of 42 (permalink) Old 11-09-2016, 05:22 PM Thread Starter
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Bandit, I would be afraid of running at 70 in fourth.
BUT, now that Graybush has directed me to the Gearing Commander site that would be about 4800 rpm.
Hmmmmm

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post #9 of 42 (permalink) Old 11-09-2016, 11:57 PM
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Quote:
Originally Posted by NorCalRob View Post
Anyone with a stock bike and a tach that can provide me some info? I have a stock 900 Classic LT with stock tires, etc. If my speedometer says I am doing 60, what are my RPMs? What if I the speedometer says 70, or 80? Yes, the easiest way to determine this is to purchase a tach, and that is on the wish list, but until then...

Thx, Rob
Select VN900 Classic LT; Enter either engine RPM or MPH; Click anywhere on the page:

60 MPH = 3514 RPM
70 MPH = 4100 RPM
80 MPH = 4686 RPM

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post #10 of 42 (permalink) Old 11-10-2016, 10:04 AM Thread Starter
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Okay, now that I have an idea of the MPH/RPM, what sort of RPMs can our trusty rides handle for long periods of time, assuming proper maintenance? Can I ride at 4100-4500 RPMs for a couple of hours? A mechanic I am not. I can change the oil and filter, but anything beyond that I take to the shop, and take it as recommended in the Owner's Manual.

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