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Can I use a 5pin vespa regulator?

Posted: Thu Jul 09, 2020 2:44 pm
by Davidsquaredson
feeds in are 1) unregulated AC in, 2) Regulated AC out, 3) DC out, 4) unregulated AC in, 5) ground.

My lambretta stator has 1 AC out for the regulator. Can I add a wire to it so it connects to both regualtor in puts or will this drop my watts?

Tx
David

Re: Can I use a 5pin vespa regulator?

Posted: Fri Jul 10, 2020 11:34 am
by firekdp
I can't think of any Vespa 5 pin reg with the connections you describe.
The 2 common 5 pins are marked G, G, +B, C earth and A, A, B+, G earth. The first one is suitable for a single output stator, the second isn't.

Re: Can I use a 5pin vespa regulator?

Posted: Sat Jul 11, 2020 2:27 am
by Davidsquaredson
Got it. This won't work on a lambretta but I have a couple of vespa I can put it on.

TxImage

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Re: Can I use a 5pin vespa regulator?

Posted: Sat Jul 11, 2020 8:12 pm
by nick b
i have been wondering the same as i have a dc bgm system [2 yellows etc] and a wassell but any inactivity gives me a flat battery ,any ideas?

Re: Can I use a 5pin vespa regulator?

Posted: Sun Jul 12, 2020 10:47 am
by firekdp
nick b wrote: Sat Jul 11, 2020 8:12 pm i have been wondering the same as i have a dc bgm system [2 yellows etc] and a wassell but any inactivity gives me a flat battery ,any ideas?
All batteries will self discharge slowly over a certain period, unless trickle charged, but if yours is going flat quickly then either the battery is failing or you have a current drain somewhere.
You can test for a drain, by removing the fuse and connecting an ammeter across the fuse holder. With the electrics all off there should be no discernable current flow.

Re: Can I use a 5pin vespa regulator?

Posted: Sun Jul 12, 2020 11:24 am
by nick b
cheers

Re: Can I use a 5pin vespa regulator?

Posted: Mon Jul 13, 2020 5:35 pm
by Monty
firekdp wrote: Fri Jul 10, 2020 11:34 am I can't think of any Vespa 5 pin reg with the connections you describe.
The 2 common 5 pins are marked G, G, +B, C earth and A, A, B+, G earth. The first one is suitable for a single output stator, the second isn't.
Ok pretty well up on Lambretta DC running wassels but a mate has asked me to have a look at a Vespa he is building He has the standard 3 pin regulator at the moment and wants to use the battery tray and charge a battery. I told him he could use a 5 pin reg. first I was not aware they had the 2 types, I have not looked at his stator in detail but looks like a Lambretta one. Understand the AA in and out B= for a trickle charge to the battery what's the G or C as we already have a ground.