So the XT500 is different then if it has a regulator - but why not just replace it if it's faulty?.

Have you disconnected the chassis side of the XT alternator coils?, otherwise you're shorting things out.

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If i could find a regulator at the breakers for the xt i would have changed it already. They have plenty of three phase regulators but no more single phase.
at over 60€ it would be cheaper to build (and more fun)

i am trying to find an extracter for the fly wheel. as soon as find that it would take me 5 mins.

 

You've probably already spent that on blown bulbs!

What does the existing regulator consist of?, can you repair it?.

Hope it comes off easily - sometimes they can be difficult!.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

The original regulator had blown and the circuit was filled with resin. i took the resin out of the heat sink with a blowtorch and i saw about 10 burnt composants. i put the crude circuit with a triac, 2 zener diodes and a 1k resistor. it was for 6v and i want to try 12v.

i found 4 bulbs at 4€ each. but they have no more. anyway 36w lights up the road like a hand torch.

for the flywheel i have already tried 3 shops, they don't have the right size. but i have wire and soldering iron always in my bag...

 

in the meantime... mosfets in all that. looking though all my electronic stuff i found a bunch of mosfets. is it possible to use them in a shunt regulator? how o they differ from power transistors?

has anybody looked at the circuits i posted?

can any body help me?

 

ok i went to yamaha and the fly wheel came off with the right tool. unsoldered the mass, so now i can fit a 2 wire regulator and have full wave rectification.
now i just need to buy the parts and build the circuits. i think i will try several circuits.

even if i am talking to my self, i will try and keep this post up to date. when i googled i came across electro tech, but it never came to a conclusion.

 

Yes, please keep us informed, I'm sure we're all love to hear how you get on. Now you've got the earth wire off you can get on and try things.

__________________
PIC programmer software, and PIC Tutorials at:
http://www.winpicprog.co.uk

 

sir , I have a enfield bullet containing 12v battries ,when I drive my bike more the then one hour the battries get over chage kindly suggest me a circuit diagrame of regulator com recticier for single phase megnato

 

Hi Neil, my XT500 is modded to use 12v system, with the orig stator coil, 12 reg and 35w headlight. The headlight dims a little at idle but when riding it is fine.

You don't have to rewind the stator coil if you are happy with a 35w headlight. All you need is a 2-wire rect/reg from a little modern motorcycle from the breakers. Most of the scooter type bikes and a lot of the 250's use a 2-wire (single phase) 12v rect/reg.

These usually have 2 white wires for the ac input and red/black (or something and black) as output wires. I wouldnt expect to pay more than $25 to $30 USD from the breakers.

If you can get a CHEAP 3 phase motorcycle rect/reg you can use that, they just use a 6 diode rect instead of a 4 diode rect, so you can leave one of the 3 AC input wires disconnected and it will work fine as a single phase rect/reg. They are typically quite crude, using 3 diodes and 3 SCRs as the "6 diode" rectifier, with the voltage regulation done by components on the 12v output so leaving one AC input wire disconnected makes no difference to its operation.

If I remember right the XT500 forum has some threads showing how to wind the stator with more turns but this is only really needed if you want to run a larger headlight like a 60w+. I decided not to bother with mine.