Hi All,

There are a couple of electronic ignition systems available for the Sherpa, but which is best? Has there ever been a test or are they pretty similar?

I would probably opt for a system from Bultaco UK because the guys have been brilliant for parts, help and advice during my rebuild, but what about Rex Caunt?

I've seen systems from the States with lightened flywheels which I think I wouldn't want. Or do I?

I've read comments here which indicate quite a change in engine characteristics, is that accurate? I don't need lighting.

Lots of questions, your thoughts are appreciated.

Many thanks.

Edited August 20, 201412 yr by mike350

Once you change to an electronic ignition you will never go back to points. They start better and run better. I have a Bultaco UK system on my M151 engine and the auto advance in the ignition is brilliant. I can have it as smooth as down low and it will still rev like a 125. I would never go back now and you don`t have to keep timing the ignition. Set it up and never touch it again except to clean the flywheel every now and then. The only thing it has changed on mine is to make it run a lot better. I have a lightened primary drive on mine but that is because I wanted it lighter. If you like the way it is standard keep it that way. The Bultaco UK ones use the standard Femsa flywheel anyway.

sorry to butt in bullylover when you say lightened the primary drive do you mean you have put a lighter weight on it? i was thinking off buying a electric ignition for my 340 but it's running very well on points at the moment. but would like a electric 1 for another bike am going to be doing.

Hi Bondy. I machined the inner weight of the primary drive so it only has the outer weight on it now. The inner weight weighed around 800 grams.

oh i see what dose that do to the bike dose it make it more snappy? i was thinking off tryin a 250 weigh and magnot on a 199A engine i have.

I've got this one on my 350: http://www.francetrialclassic.com/en/ignition/1280-bultaco-trial-electronic-ignition.html

Saves a little over one kg in rotating mass: good, fast enough pick-up but not to light to make the engine stall to easily.

Saves you the work needed to machine off the crankshaft weights on the clutch side, or to buy the crankshaft weights of a 250.

Edited August 21, 201412 yr by guys

i do have a spare 250 clutch weight and magneto would this be ok on a 350? will the 250 weigh and magneto make it more snappy? also will it stall easy with them on?

Clutch weight would be fine but not both Bondy. Could be a bit lively

ok ill give it ago not be for ages yet.

this is the Electronic ignition i had few years ago. from inmotion.

Edited August 21, 201412 yr by bondy

I've got this one on my 350: http://www.francetrialclassic.com/en/ignition/1280-bultaco-trial-electronic-ignition.html

Saves a little over one kg in rotating mass: good, fast enough pick-up but not to light to make the engine stall to easily.

Saves you the work needed to machine off the crankshaft weights on the clutch side, or to buy the crankshaft weights of a 250.

That is a German Powerdynamo, they are really well made and I'am really thinking to get one for my Yamaha.

BTW.:

There is not only one ignition system with light available there is also one without light, even with twin sparks availablke, too different rotor weights.

Not enough you can also get a custom made system: Powerdynamo supplies a lot of brands and I never have heard any complains so far.

http://www.powerdynamo.biz/deu/systems/lists/bultaco.php

Sadly as a reseller France Trial Classic has made some profit to your purchase ... the same iginition from the manufactor would have saved you aroung 50€!

Edited August 21, 201412 yr by pschrauber

i was going to order some parts from there way to much money. and the tax duty is crazy i only wanted a small item would have cost me twice the cost off the item.so i didn't bother.

Thanks to all for the input. I've gone with the Inmotion version which should be a simple install and I'm looking forward to seeing what difference it makes, other than to never having to set the points again.

hello mike let us know how it goes? am thinking off buying 1 in the next few weeks.

why where on the subject has any 1 tryed a rex caunt Electrnic igniton? any issus with them?