Varitronic Timing
- wack 63
- registered user
- Posts: 1254
- Joined: Fri Nov 27, 2009 9:33 pm
- Main scooter: '71 GP TS1
- Location: Lincs
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I've ran a Varitronic on a TS1 for years and set it at 24 degrees and never had any issues apart from a stator breaking down and causing a misfire/ stutter at a certain rev. As far as I'm concerned I wouldn't consider anything else apart from maybe genuine Vespa LT coils and pick up with a Kytronic
Same here GT186 at 24 degrees.
Varitronic stator recently replaced after 10 years so can't complain!
Solid piece of kit.
Varitronic stator recently replaced after 10 years so can't complain!
Solid piece of kit.
I have set both Varitronic and Casatronic at 21degs tho I was advised to set at 24 (Static/tickover).
Old Lambretta's never die, they get tuned..................
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- Joined: Tue Jan 31, 2012 8:54 pm
- Main scooter: Lambretta GP
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Do note that, unlike most bolt-on advance/retard ignition boxes, the Varitronic actually advances slightly from the tickover firing point, then retards at higher RPM. This is done so that the motor is less likely to kick-back when starting and to make it easier to kick-over (not fighting so much advance), then deliver better grunt at low revs, then keep it cooler at higher RPM. Bolt-on boxes simply apply a linear retard function.
http://www.lambretta.co.uk/downloads/vari1.jpg
http://www.lambretta.co.uk/downloads/vari1.jpg
- wack 63
- registered user
- Posts: 1254
- Joined: Fri Nov 27, 2009 9:33 pm
- Main scooter: '71 GP TS1
- Location: Lincs
- Contact:
I run a hi comp motor with a Kytronic set at 28 deg BTDC with the -12 retard and it's so easy to kick over even with a tiny flywheel as they don't advance until 2000 rpm. Definitely recommended for anyone who struggles to kick a motor over.