Road speed from RPMs - help?

Post by MJ » 14 Sep 2006 05:38 pm

This is why we need a technical guide resourse here. James posted a link on how to fix a speedo in another topic, I just don't know where

Post by **foggyjames** » 14 Sep 2006 08:23 pm

That was how to fix the odometer, not the speedo itself, before you get your hopes up!

I agree, and it is underway...

cheers

James

Post by MJ » 14 Sep 2006 09:33 pm

I'd have discovered that if I'd found it

Oh well, sorry

Post by **Andy's-Old-Beast** » 29 Sep 2006 04:27 am

I just spotted this thread! 27.86, I should have mentioned what the rough speed / rpm ratios are. What I used to go by was that 2000rpm was roughly 10x each gear in road speed. In other words, 2000rpm in 3rd = 30 mph, 2000rpm in 4th = 40 mph, in 5th = 50 mph. 2500 in 5th = 60 mph, 3000 in 5th = 70.

More detail in my answer to the "free 360" thread in the offers section, because I replied to that one first!

Bye for now!

Post by **foggyjames** » 29 Sep 2006 06:03 pm

Just hope there are no Gatsos around, as 3000 in 5th is about 75 in a late 360 carb.

cheers

James