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The BSA A7-A10 Forum
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Revs speed ratio
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Topic: Revs speed ratio (Read 441 times)
a101960
Wise & Enlightened
Join Date: Sep 2007
Posts: 1052
Karma: 12
BSA RGS BSA C12
Revs speed ratio
«
on:
06.07. 2013 10:01 »
My bike at an indicated 60 mph is showing an indicated 3500 rpm on the rev counter in 4th gear. As a matter of interest is this about right?
John
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chaterlea25
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Join Date: Jun 2009
Posts: 3448
Karma: 48
Re: Revs speed ratio
«
Reply #1 on:
06.07. 2013 23:04 »
HI John
It depends on the primary gearing ?
HTH
John
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1961 Super Rocket
1963 RGS (ongoing)
muskrat
Global Moderator
Wise & Enlightened
Join Date: Jul 2009
Posts: 8673
Karma: 112
Lithgow NSW Oz
Re: Revs speed ratio
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Reply #2 on:
07.07. 2013 14:46 »
That would be pretty close John. My cafe reads 3250 at 60 with tall primary gearing (= to a 24 engine sprocket).
Cheers
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'51 A7 plunger, '57 A7SS now A10CR, '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7
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Revs speed ratio