MOTOPLAT repair suggestion?

[penton117]

Can anyone know of a good place to send a dead Motoplat for repair? Also I would be curious to know about any experience people have had with repairing these. I understand there is a common diode that needs replacement. I was wondering how you would access it?
Thanks,

Don

 

[fzrr750]

Hey, Don. Try  //www.vintagedirtbike.com. It cost $175.00 and comes with a 6 month warranty. He has some nos forks also and few other things.  

 Seeeyaaaa!!    Ed T.    


71 Suzuki TM400,72 Suzuki TS400 Desert racer,76 Suzuki RM250,74 Yamaha MX360,79 KTM 250MX, 87 Yamaha FZRR750 X-endurance racer #112.

[Larry Perkins]

I have good(tested by Dane at PVL) lower units with flywheel for $150 and with coil if needed for $200.  Also have NEW PVL complete for a good price.

 

[fzrr750]

Hey, Don. Try  //www.vintagedirtbike.com. It cost $175.00 and comes with a 6 month warranty. He has some nos forks also and few other things.  

 Seeeyaaaa!!    Ed T.    


71 Suzuki TM400,72 Suzuki TS400 Desert racer,76 Suzuki RM250,74 Yamaha MX360,79 KTM 250MX, 87 Yamaha FZRR750 X-endurance racer #112.

[Larry Perkins]

I have good(tested by Dane at PVL) lower units with flywheel for $150 and with coil if needed for $200.  Also have NEW PVL complete for a good price.

 

[adrian_goold]

I picked up a '96 ktm flywheel and stator the other day at a swap meet.
The flywheel fits perfectly on the crank shaft. The stator nearly lines up with the three holes on the backing plate. An new backing plate would have to machined to centre the stator correctly.

Just a bit of info i thought i would let you know i discovered while comparing things in the shed!

Adrian
Down Under

Regards,
Adrian Goold
'73 175 running
'78 250 running soon!
'80 250 project
'81 495 project
'00 250exc running

[Jim Panzer]

This is a piece of cake! There is a triangular "fin" that projects on the outside perimiter of the motoplat unit. The diode lives in here. Simply use a wire cutters to break the resin away and expose the diode. You can pick up a 1000 piv / 1 amp general purpose diode from Radio Shack, cut the (2) wires from the old diode (note the Cathode orientation, white stripe on one end)and solder in the new one. Use 2 part epoxy to encase the new diode, replace the flywheel, check the timing and go riding. In the 70's I fixed countless units with this problem (Very weak spark)

Jim

Jim Panzer

[penton117]

Hi Jim,
Thanks for the tip. I have seen a few of those with the fin and I even have one where it just looks like I diode coated with plastic, but the vast majority don't have the diode so "external" most of the ones I have and have seen are stamped with a diode symbol on them indicating that there is a diode inside but no clue as to where. Anymore good tips guys?