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Showing posts from June, 2016

Carb Boring... is never boring!

Some boring photos of a Yamaha WR200 carb. Normally this work should be done on a 4-jaw independent chuck. I've used shims and took the carb countless times out of the chuck as to achieve the smallest runout. Then I bored the carb from 29.2mm to 31mm. Normally, the carburetor should be offset as well, as to remove the smallest amount from the base that the carb slide fits.    

YPVS Controller Repair

It's 04:00 ante meridiem, listening to BBC Radio 4, drinking Ouzo and working on Richard's(UK) YPVS constrollers, how surreal is that? One unit needed a repair job and the DIP switch modification, for the other one I was asked to just do the modification job. Both YPVS units are now ready for posting back. Sometimes I need to do some kind of repair jobs, an electronics engineer wouldn't approve. This YPVS controller I received had some previous bad soldering job and a few damaged PCB traces  and I was forced to use somewhat "unconventional" ways to repair it. It is now sealed with PCB transparent protective coating and a bit of black hot stick glue to absorb any possible vibrations. It will last for a long time, if not forever.   The wiring loom fitments on these YPVS units were modified with water resistant plugs but I don't have enough info on that. I didn't liked them at first and I was a bit frustrated on how to thoroughly test the units bu