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On 3 Jan 2002, at 12:27, Claude LePendu wrote: > ----- Original Message ----- > From: <type3-d-request@vwtype3.org> > How to find any advance timing mark on pulley using simple math. > Without doing any math at all! We all know: 2nd timing mark is > 10 deg Bef Top Dead Center, BTDC. Now measure distance from TDC > to this 2nd mark: you get 1.8mm. Therefore: every 1.8mm will > give you 10 BTDC. If you want 20 BTDC: you need 2 X 1.8, gives > you 3.6 mm from TDC. If you want 30 BTDC, you need 3 X 1.8, gives > you 5.4mm. > By now the pattern is obvious: all you have to do is multiply by 18. > Here's your final test question: Find distance for 25 deg BTDC. 25 > X 18 = 450 You got it! 4.5mm Easier done than said. Not sure who the originator was, but these numbers are too small. Perhaps these should be centimeters? - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Unsubscribe? mailto:type3-request@vwtype3.org, Subject: unsubscribe