Two Stroke Racelab

Here's another one ultra rare PGM unit that belongs to Pomper(NL). This one is a reprogrammable PGM unit for the late Rs250 bike. Yes, you see correct, it's a PGM3 and not a PGM2. Even though the internal is quite similar to the usual PGMIII unit, the pinout is totally different.

I've been working on some YPVS controllers for Pete(GB), Gavin(GB) and LES(CA) and I just found out a new exhaust valve curve that I want to share. Pete owns a Tz250H converted to an L (electronic power valve). I have a few TZ250 (mostly reverse twins) exhaust valve curves on the blog but the below one is new to me.

Many thanks to Paul(USA) for the photos of his Nsr250 and his kind words about the Battery Eliminator. I purchased your battery eliminator for my NSR250 and it works great. Bike starts easily every time. Thanks, Paul

Time goes by like a two stroke motorcycle and this blog is now nine years old.

Many thanks to Terry(UK) for using my sticker on his magnificent RZV500R bike.

Many thanks to Tom(UK) for the photos of his lovely Tzr125 bike.

Lazy afternoon at the workshop, turning some spacers for a NH3 PGM unit.

I had recently repaired - modified a YPVS control unit and also made a custom SDR200 leak down tester tool for Matthew(UK). The Sdr200 is a unique bike with a Trellis frame. The YPVS exhaust valve curve is also unique to this model.  And here are the YPVS settings, specific to the SDR200 model.

Time goes by like a two stroke motorcycle and this blog is now eight years old.  P.s I suppose I should have posted this on the 6th of July but better late than never.

Mark(UK) performing a leak down test on a Lambretta TS1 238 cc engine with his custom tool. Many thanks Mark and I hope everything goes well with your project.