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I have a set of early 1.8 Giulietta gears, and was thinking of building a Closer ratio gearbox by grafting it into my TS box. But before I did, I thought I would build a spreadsheet to model and make a graphical comparison.

I added some extra features for fun (calculated acceleration that I derived from experimentation with data on some website).

I probably will not do it as I don't race, but it was an interesting exercise. I thought it would post it here for others to play with... If you find any bugs in the calculations, PM me and I will sort it out.

Fill in the green bits and everything is calculated for you.

View attachment Gear and Speeds.xls

Duk posted this over on the Australian forum a while back.

AlfaTransaxleGearRatios.jpg
 
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