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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?

-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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