Strobing a varitronic

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Cyllllake
Posts: 1
Joined: Thu Jan 03, 2019 12:26 am
Location: San Francisco

Strobing a varitronic

Postby Cyllllake » Thu Jan 03, 2019 12:55 am

Motor's running after complete build with almost all new components.

It's my first Lambretta, so forgive me if I ask anything stupid.

I'm trying to strobe my ignition (varitronic) and it seems to be 24 degrees at fast tickover. As I rev it (nervously) the timing appears to be static until around 4000 rpm (engine speed judged by ear) https://mechanicguides.com/best-timing- ... -ignition/ . Then the mark disappears round to 180 degrees out.

I assume that this is because there are 2 sparks per revolution, but how do I strobe it correctly? This seems especially difficult as I don't have a rev counter.

it's a GT186 with Ancillotti clubman, so not particularly revy motor. I'm guessing it will max out at around 7500rpm.

Advice please?

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HaltechMatthew
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Joined: Tue Feb 07, 2012 12:45 pm
Location: Sydney, Australia
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Re: Strobing a varitronic

Postby HaltechMatthew » Tue Jan 08, 2019 4:51 pm

See if the pickup will go around both ignition leads.


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