variatronic

Anything related to Lambrettas... ask tech questions, post helpful info, or just read and learn.
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tea5ive
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Posts: 575
Joined: Sat Mar 21, 2009 3:41 pm
Main scooter: cometa 140
Location: gilberdyke, east yorks
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firekdp wrote:
tea5ive wrote: i too need to know how to line the boss up (key way) to right place for the trigger as joe said there is no trigger on the flywheel . i know that they fire twice at 180 degree intervals so it wont mater which firing point you use. its just finding it with out moving the boss round a bit at a time.
I thought that due to the layout of the rivets on it that the boss will only fit in two positions. :?: Due to the stator/flywheel having no pick up system, either of these two positions will be correct.

i have just had a look at the flywheel, and yes as you said it only fits two ways there is two gaps or two bigger than the others between the rivets these are at 180deg to each other. cheers smon
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tea5ive
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Posts: 575
Joined: Sat Mar 21, 2009 3:41 pm
Main scooter: cometa 140
Location: gilberdyke, east yorks
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joespeed wrote:
firekdp wrote:
tea5ive wrote: i too need to know how to line the boss up (key way) to right place for the trigger as joe said there is no trigger on the flywheel . i know that they fire twice at 180 degree intervals so it wont mater which firing point you use. its just finding it with out moving the boss round a bit at a time.
I thought that due to the layout of the rivets on it that the boss will only fit in two positions. :?: Due to the stator/flywheel having no pick up system, either of these two positions will be correct.
a nice man from cambridge lambretta gave me a short cut to reassembling the boss to the fan ,when the tdc arrow is at twelve o clock the keyway is at about seven o clock ,he then said in needs to be 'charlieized',oh whats that i asked ,two nice tig welds just to make it 'belt and braces' and if charlie cant shake it off with close to forty horses then your little ts should be ok,
regards
joe
joe, once the vegatronic flywheel is re bossed and then tried i will tig weld it up just to be on the safe side, with all the extra power you cant take any chances :shocking: :lol: :lol: . cheers simon
joespeed
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Location: drax,near selby,north yorkshire
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still not sure whether the varitronic is the way to go!
got the flywheel bolted and tigged up ,fitted new coil pack ,assembled as it came out,tried to start it ,it took three prods and kicked back forth kick sprung into life ,only to find i had four reverse gears,engine is running in the opposit diection!
what have i done wrong?
regards
joe
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wack 63
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Joined: Fri Nov 27, 2009 9:33 pm
Main scooter: '71 GP TS1
Location: Lincs
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It is firing too advanced so retard (clockwise) the stator, then check with a strobe. I set mine at 25 degrees fast idle. Or if the stator is in the original position have you got the boss right?
joespeed
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Location: drax,near selby,north yorkshire
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well i'm getting there but very slowly.i have two timing guns(cheap crap) and a super snap on but none of them will function with this varitronic,can you recommend one?
regards
joe
Wayne Miller
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Joined: Wed Jan 07, 2009 12:52 pm
Main scooter: Vespa 50 Special (Rotax Proto)
Location: Rothwell, Northants
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joespeed wrote:well i'm getting there but very slowly.i have two timing guns(cheap crap) and a super snap on but none of them will function with this varitronic,can you recommend one?
regards
joe
Camlam do a timing gun for the varitronic

Image

Theres a link to it here
Stay tuned..............
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