4 speed gearbox ratios

[Zetomagneto]

If top gear feels too low, the final drive ratio needs to change, no amount of tinkering with the gearbox will change that. Once top gear is where you want it, review the suitability of the intermediate gears.

For 'performance' driving a CR box is likely to feel better on the road, at the expense of some capacity for 'crawl' and mountain ascent perhaps.

As I said- with a one to one top the only way to change the gearbox is fit an overdrive !!

Someone will suggest a five speed box in ha minute.Higher axle ratio needed.