Re: MZ-B/Vape ignition
Posted by Nigel B on November 1, 2021, 9:11 am, in reply to "MZ-B/Vape ignition"
I fitted a number of these for Mark Dicker onto a Jawa 250 single, Jawa 350 twin, MZ ETS250, MZ TS150 & his BMW R75 outfit (which had an additional electronic advance module). |
All were straight forward to fit & I only had a couple of issues - the ETS250 needed a ground wire from the engine to the frame adding & with the TS150 it turned out that the engine rebuilder had missed that the dynamo mounting stub on the crankshaft was bent (probably the result of an "off" ) - the Vape rotor was catching on the stator when I tried to fit it. When the crank had been rebuilt again & ran true, the kit fitted fine.
Note that MZ-B / Powerdynamo are no longer in business and that Vape (the actual manufacturer of the components) handle everything now.
The Vape kit is a substantial capacity upgrade - 12V 180W and self generating CDI ignition. If you want to run heated grips, halogen headlamp etc., then this allows you to do so. All lamps, the flasher unit, the horn & battery require changing in addition to the kit.
I bought a 6V alternator / CDI kit when they were MZ-B, but have never got around to fitting it. Replacing the stock electro-mechanical regulator with an electronic Vape 6V dynamo regulator makes a big difference to the output of the standard 6V dynamo, though IIRC you may loose the "bump start" function. I measured a solid 7V at the battery from just over tickover after I fitted mine. There are other electronic regulators available - Mark D used to refer to them as the "Czech block" or "Polish plate" due to their physical form & he fitted which ever he could get at the time to anything he bought, as he reckoned this was the best value reliability upgrade available. They are about £25 IIRC.
I rewired my bike using uprated "Thinwall" insulated wiring from Vehicle Wiring Products & added relays for the headlamp fed from a separate fused supply wire to reduce volt drop through the ignition switch & dip switch (measured 6.85V at the headlamp bulb when the dynamo output was 7V). Also replaced the OE bullet fuseholder with a blade fuse unit. Ignition is handled by a Velleman kit system that uses the points - this needs a decent battery to operate though. The points just wear mechanically now, as the module only puts a low current though them.
This arrangement proved reliable over several thousand miles, hence not getting around to fitting the MZ-B kit.
I had seen the Tezet kits on Ebay - these seem to re-purpose the original electrical equipment components from Chinese bikes (GY6 engine family ?) using purpose made adapters to make them fit the MZ. I have no experience of these, though the price is attractive. The kit originates from Poland, I think.