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rev counter = speed ?

Posted: Fri Aug 13, 2010 11:36 am
by scootcoot
How do you work out your speed from a rev counter ?

Re: rev counter = speed ?

Posted: Fri Aug 13, 2010 12:05 pm
by ArKaTxU
scootcoot wrote:How do you work out your speed from a rev counter ?

If you know your tyre size, and your gearbox, with the Avantone's fantastic app you can see your rpm and the speed to this rpm.
http://www.tonycassidy.com/microsite/Ge ... liser.html

Re: rev counter = speed ?

Posted: Fri Aug 13, 2010 6:58 pm
by wlightning
I use a garmin forerunner which is GPS running 17/46 6000 rpm = 59mph 7000 = 70mph 8200= 82mph
82mph on a main strem road frightening bike all over the road been told its tyres (racemans) my bike will rev to just over 10000 rpm so you can work it out
I now think its not how fast we go but how fast we can get there :lol:

Re: rev counter = speed ?

Posted: Fri Aug 13, 2010 9:57 pm
by scootcoot
Thanks or the replys ! I found this whilst researching , may be of help to others calculating rpm - speed !

http://www.scooterhelp.com/tuning/lam.gear.calc.html

Re: rev counter = speed ?

Posted: Fri Aug 13, 2010 10:25 pm
by 22/2
Also ensure your clutch is not slipping, because 10,000 won't = 100 mph if it is.

Rich

Re: rev counter = speed ?

Posted: Mon Aug 16, 2010 10:26 pm
by wlightning
10,000 rpm thats why i had to fit new clutch (RT 7 plate ) only thing is this could be boarder line too

Re: rev counter = speed ?

Posted: Tue Aug 17, 2010 6:51 am
by soulsurfer
But will it rev to 10k in 4th on the road? Mine'll rev to 9k on a dyno with the same gearing and a Devtour pipe, but it won't do 90mph on the road.
BTW what oil you running with that clutch?

Re: rev counter = speed ?

Posted: Tue Aug 17, 2010 8:23 am
by lambro63
whitelighting...........stop it carl !........ no more RPM...... we all know shes quick off the mark with a pint pot like you steering her
:frog: :frog:

Re: rev counter = speed ?

Posted: Tue Aug 17, 2010 6:40 pm
by wezly
Soulsurfer, do you have a link to the online manual for the clutch? I need to know what metal the crownwheel is made from?

Re: rev counter = speed ?

Posted: Tue Aug 17, 2010 11:05 pm
by wlightning
Soulsurfer it went to 10,500 on the road I thought it was going to blow up scared me to death :o but to be real more than 90mph on road who wants it
I now no not me thank you :D