My Tacho in my mini isnt working correctly so im wanting to know the following:

3.44 diff and Standard GT gearbox (ie same as mk2 S)

If im going 100kms in third what revs am i doing?

Im not sure of the ratios, is there a calculor somewhere available?

Just curious


Thanks Brenton

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I have a spreadsheet that calculates it - 5150rpm is 100.74kph with a 1.35:1 3rd gear, 3.44:1 diff and 165/70/10 tyres

so, about 5150rpm

edited! source ratio is here - http://www.ausmini.com/forums/viewtopic.php?t=63491

Thanks Simon

ok thats not as many revs as i thought i was pulling.

But thats ok, just means i can rev it a bit harder than i have been

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did you catch my multiple edits? my fingers went faster than my brain.... but yeah, 130kph in 3rd gear is OK, but you've probably run out of torque by then...

I love seeing in-car videos of Nb cars changing from 2nd to 3rd at 60mph - screaming!

Errr.....ummmmm.....Simon, I think there is a BIG error in your spread sheet!

Should be about a needle widths under 4000 RPMs. It's 25.7 kph per 1000 RPM.

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Not in 3rd gear it's not.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Haha thanks, Only edit i caught was i think you had 165/70/20 tyres originally

Thankyou

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