Re: Speedo worm gear[200/78]

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Re: Speedo worm gear[200/78] posted by Keith Hyndes on
Monday, 19 October 1998, at 6:23 p.m.

Leo,

The plastic teeth will have 18, 19 or 20 teeth (which are red, orange or black), there is a worm gear on the output shaft of the gearbox. It will have 6 or 7 teeth. I think 6:19 ratio = 3.73:1 diff ratio. The rest of the speedo ratio tuning is on the speedo itself, it caters for minor variations as far as tyre diameter etc..There will be quite a bit of drag pulling out the SDG, as the seal will have swelled. --
Keith 245/80 + 440/94 + S*** 900T/85

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