Had to give back the rotor that i robbed off my buddy Riches chop today , i climbed into my new double glazed rolling workshop (Its been 8 years since i had a worshop, so just humour me ok), placed the faulty rotor on my 8ft work bench () looked longingly at it wishing that prehaps i could fix it, hell i have fixed some prety imposible stuff before, it has go to be worth a go.

So i had a good long look at its construction, mmm... ok so we have an input and an output, the rotor is a continous wire wraped between 2 plates with two contact rings on its face to which the carbon brushes complete the circuit.

I tested the two contact plates with my super dooper continuity tester and found that the curcuit was broken (no beep). So i proceeded to investigate by carefully removing the protective resin, and it was not long before i descovered the offending broken wire close to the terminal point. Out came the trusty soldering iron and the broken wire was tacked back into place.

On testing though it had an intermediate charge ocuring only when i blipped the throtle, strange i thought. so i once again removed the rotor and further investigation insued. It was not long before i found that the wire was also broken right by the opposing contact point, so i duly repaired the offending wire... and.... Wooohooo, i now have a charge of 13/14 volts and my trusty stead is back on the road.

How long this fix will last is anyones guess, but it just goes to prove that if you have half an ounce of knowlage you can save a ton of dosh and if it is broke try and fix it, you might surprise yourself.

All i need now is a quick fix for the starter clutch on my beemer so i dont have to drop the lump out and strip it on my nice new 8ft long bench. I have however found the colour that the beemer will be adorning later this year, anyone seen the Orange used on the new Triumph Tiger? Lucifer Orange, triumph do make excedingly good colours.... !

Quality.


I'll have to think about getting myself a workshop as well.

The only problem you might have ace is with shorts try blathering some varnish all over the repair and give it a good heat up with a hairdryer to let it run right into the joints you have made, this should help stop any short circuits that might occur

Nice job

It's good to fertle about and fix something rather than parting with the hard-earned.

I had thought of that and i'll apply some resin once i am sure it is fixed. It seems to be ok at the moment though.

continuity testing - my stock in trade fix for anything from defibrillators to surgical diathermy machines to life support monitoring.

It always amazes me the amount of stuff that gets binned due a simple wire break.

nice one Ace.

bm starter clutch..... its the same as a car one innit? the old flat twins where, i could of swore they are a pre engaged bosch starter, two bolts dead easy to get out! but i could be wrong, a mate did have a engine and gearbox i'll text him tomorrow and see if he still has it

well done with the rotor btw

Cheers Woodz, the starter is held in with 2 bolts to the rear, but i am not sure about the starter clutch, it is an internal part, i think (hope ) there is a section of the engine block to the rear that comes off to expose it.

spoke to beemer bloke who sujested flushing the engine twice first, parently they have a habit of guming up.. ?.... got to be worth a try.