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Re: [T3] Timing Marks
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?
-
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
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