Re: Roadster gear ratios

["Daryl Smith" <darylsmith@telus.net>]

Comparing speed vs rpm with the 3.89/3.7 rear ratios with the 4 spd,  I don't
see where the 3.7 will adversely affect performance at all.

MPH@RPM          3000                   5000
                       (3.89)   (3.7)         (3.89)    (3.7)
1st                    16.4    17.3          27.4      28.8
2nd                    27.6   29.0          46.0      48.4
3rd                    42.3    44.5          70.6      74.2
4th                    55.6    58.4          92.6      97.3

This is using 195/60/15 tires at 24.2" diameter.(isnt the standard 5.60-14
tire about 24" diam.?)
If I am wrong please let me know why.( its not like i never make mistakes).
Anyone nearby want to swap their 3.7 for a 3.89?
Daryl
'66 1600
vancouver,bc