GEARBOX - Final Drives, standard

FDs are ultimately responsible for the way your Mini goes after engine, gearbox, and under carriage tweaking has been applied. part numbers: DAM3647, 22G443, 22G101, 22G340, 22G338, DAM4131, 22A399, DAM4162, 22G940, 22A399, DAM2677, DAM2679, 22A411, 22A413, DAM2808, DAM6327, DAM2808, TCC10001, Terminology - FD - Final Drive/diff ratio The aforementioned and the degree to which it has been done will affect the decision as to what FD is required. They’re also responsible for much discussion between many tuning freaks, and confusion to the less informed. There’s nothing weird or scientific about it. Maximum acceleration requires a low final drive, top speed a high one. And these two terms confuse most. The confusion being the LOWER number denotes a HIGHER gear. Likewise the higher number denotes a lower gear. Likewise the higher number denotes a lower gear. Largely because the lower the ratio, the slower you go and vice versa.

Gearbox - Fomulae for FD/Tyrespeed and Gear Ratio Calculation

Basic rule to remember is ratio is established by dividing tooth count ondriven gear by the tooth count on its driver. To work out overall gearbox ratios you also have to establish the constant ratio.

Terminology -
FD - Final Drive (diff ratio)

Formula : 60,000 FD (Final drive/diff ratio) x wheel rev per mile.

Calculation for establishing vehicle speed for different final drives.
Formula These are for common tyre types, and accurate enough for assessment - a combination of using industry standard for theoretical calculation, actually measured assortment of wheels/tyres, and calculated averages! Applying

Gearbox - Formulae for FD/tyre size/car speed and gear ratio calculation

Calculation for gear ratios and transmitted engine rpm Basic rule to remember is ratio is established by dividing tooth count on driven gear by the tooth count on its driver.

Basic rule to remember is ratio is established by dividing tooth count ondriven gear by the tooth count on its driver. To work out overall gearbox ratios you also have to establish the constant ratio.

Terminology -
FD - Final Drive (diff ratio)

Calculation for establishing vehicle speed for different final drives.
Formula :                               60,000 
                    FD (Final drive/diff ratio) x  wheel rev per mile.

Historical Article - March 1992 - Wild Thing!

In 1988, a humble 1973 Mini 1000 was minding its own business somewhere in London, when along came a young Mini freak called Jason King, who wanted to change it for ever, and make it famous.

Jason persuaded the owner to take £450 for the car, and then proceeded to throw £12,000 worth of presents at it for the next 3 years. Every minute of Jason’s spare time was spent working on his new car and every minute of his working time was spent looking for spares.

Historical Article-August 1994-Whiffin's Clubman

This is the first clubman we have featured in Mini Tech News, although I can't think why. This example belongs to Mini Spares staffer Paul Whiffin, who has obviously spent a great deal of time and money getting if right. I can't help thinking that the front end looks a bit like my old BMW 3 series. (we're allowed to say BMW now. Bernd would approve. He used to own a mini, you know).

Historical Article-August 1994-Whiffin's Clubman

This is the first clubman we have featured in Mini Tech News, although I can't think why. This example belongs to Mini Spares staffer Paul Whiffin, who has obviously spent a great deal of time and money getting if right. I can't help thinking that the front end looks a bit like my old BMW 3 series. (we're allowed to say BMW now. Bernd would approve. He used to own a mini, you know).

Historical Article-November 1995-Wheel of Fortune

Wheel of Fortune If there is one aesthetic accessory that commands more debate, confusion, and disappointment it has to be the wheel. Since the inception of the Mini, if any manufacturers have produced a vast array of different designs and' sizes of wheel rim.Many are now defunct, although some of the rims still surface through garage clearouts and the like .. Many of the rims specifically made for the Mini generally fit with no problems, others have been adapted from a rim made for another vehicle.

Historical Article-November 1995-Wheel of Fortune

Wheel of Fortune If there is one aesthetic accessory that commands more debate, confusion, and disappointment it has to be the wheel. Since the inception of the Mini, if any manufacturers have produced a vast array of different designs and' sizes of wheel rim.Many are now defunct, although some of the rims still surface through garage clearouts and the like .. Many of the rims specifically made for the Mini generally fit with no problems, others have been adapted from a rim made for another vehicle.