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by firekdp
Mon Apr 06, 2020 1:53 pm
Forum: Lambretta Tech
Topic: Scooter running on
Replies: 11
Views: 574

Re: Scooter running on

If idle does return to normal, but takes too long to do so, I'd suspect the idle mixture is too weak.
by firekdp
Sat Apr 04, 2020 9:26 am
Forum: Lambretta Tech
Topic: not another ignition question!
Replies: 14
Views: 922

Re: not another ignition question!

If you've got the money, go for the DC Vape system. If not go Indian type stator, but stick with full wave if pathfinders fitted.
by firekdp
Sun Mar 15, 2020 6:01 pm
Forum: Lambretta Tech
Topic: Full DC on an Electrex ignition?
Replies: 4
Views: 507

Re: Full DC on an Electrex ignition?

Yeah, would be handy to see where the wires terminate at the coils, it's not obvious on any pics I've seen. Odd then, that the drawing shows the 2 yellows connected on the same reg pin, any coils between them are shorted out.
by firekdp
Fri Mar 13, 2020 6:36 pm
Forum: Lambretta Tech
Topic: Full DC on an Electrex ignition?
Replies: 4
Views: 507

Re: Full DC on an Electrex ignition?

Even for AC only, the brolam diagram doesn't look correct. It is missing a link on the reg, which connects the yellow stator wire(s) to the yellow loom feed. Also the 2 yellows from the stator(?) are shown connected together on the reg, if this is correct then they won't supply a wassel rectifier. D...
by firekdp
Fri Feb 28, 2020 12:29 pm
Forum: Lambretta Tech
Topic: Ignition systems
Replies: 15
Views: 1590

Re: Ignition systems

If I was to be persuaded away from points, I would choose either the Ducati Casatronic or Vape. Both systems have been fitted to other marques for years, so should be reliable, electrically. Out of the two, the Vape looks more versatile, as it can be run as full DC , AC or a mix of both without any ...
by firekdp
Tue Jan 07, 2020 10:21 pm
Forum: Lambretta Tech
Topic: 6 volt points - help please
Replies: 6
Views: 639

Re: 6 volt points - help please

As said try a new plug. It sounds like yours has a short between the electrode and casing, or it is tracking down the inside of the plug cap.
by firekdp
Fri Dec 20, 2019 1:18 pm
Forum: Lambretta Tech
Topic: Lambretta S2 rectifier
Replies: 2
Views: 551

Re: Lambretta S2 rectifier

The reg/rec does nothing for the AC (main lights) circuit, it's a balanced system, so the lamps wattage are matched to the full stator output. The rectifier and selenium rectifier act only for the DC circuits and battery charging. The best way to test this is to connect to a battery and measure the ...
by firekdp
Thu Nov 28, 2019 10:03 am
Forum: Lambretta Tech
Topic: wiring problem?
Replies: 7
Views: 799

Re: wiring problem?

If it won't start without the brown and green connected together, I would suspect you have low, or no power coming from the stator ignition coil. Check the condition and connections on this, especially the earth one.
by firekdp
Tue Nov 26, 2019 11:17 am
Forum: Scooterotica Tuning & Maintenance Information
Topic: kytronic spark magnifier
Replies: 8
Views: 3786

Re: kytronic spark magnifier

The kytronic spark amplifier is a simple voltage doubler circuit, consisting of a diode and capacitor. The negative cycle of the feed coil is fed through the diode to charge the cap, the voltage stored is then added (in series) to the positive cycle of the feed coil, so doubling the voltage fed into...