Re: [T3] dwell meter using oscilloscope?

[Jim Adney <jadney@vwtype3.org>]

On 19 Sep 2006 at 22:05, andy wrote:

> what i was missing in the thought of the dwell and the scope was that the
> 50 degrees was going to be repeated 4 times in each rotation of the dizzy.
> i was thinking 50/360 and not 50/90.

Exactly right.

> what would be helpful, if you had a tdc sensor as a ref, would be to see
> how stable the points are.

Part of the VW Computer Diagnosis system that VW introduced in late 
'71 was a little current pickup that clipped around the # 1 SP wire. 
If you had one of those, you could at least trigger off it, so that 
you could keep the different cam lobes separated.  

> i may stick a scope on there one day just for fun.

Yeah, I keep thinking that would be interesting, too. It's just a bit 
too much trouble....

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