Re: [T3] total advance

["Jim Adney" <jadney@vwtype3.org>]

On 2 Jan 2002, at 15:04, phil wrote:

> I'm not sure I understand... Don't you need a
> reference point on the pulley to shoot the stobe at?
> Or does the dial bring the TDC mark back when the
> strobe is shooting at high RPMs?

I've not used one either, but there must be a knob that you turn 
until the strobe lights up the TDC mark; then you read the advance 
off the dial around the knob. At any rate they are pretty expensive 
tools.

You can do a pretty good estimate of this by measuring the pulley 
diameter and calculating the circumference. Divide by 360 and you 
have the amount of distance along the pulley that each degree 
occupies. Measure it out and mark it: Voila.

You'll still need a regular timing light to do this, but they are very 
affordable now and they tell you SO MUCH about what's going on 
that everyone who does their own tune-ups should own one. You'll 
pay for it in one self-done tune-up. I prefer and recommend the kind 
with the inductive pickups; I don't know if the old style are even 
made any more.  

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