Ya they are kinda rare, I assembled one a few years ago and had to get parts was difficult, crank bearings were weird and had to get them from the uk, and they were over $100! Seals were a pain too. There is a lot of potential in the cylinder, packard racing used to have a pilot cylinder r that was nasty fast back in the 90’s, the rotax 800 twin cylinder motor was a popular swap before all these new cylinders came out, 430cc pumas cam make some power and have the trx pattern, but still take a lot of work!Interesting motor from 1989 or abouts I see.
Sorry for the late reply guys. I lost my phone for the last 4 days while away down in the big city. Thought I lost it at the airport parking lot last week but found it on the floor when I got home tonight. Talk about relief and happiness!!!I would be of little help with suggesting horse power gains of a build this type. However, I can certainly tell you, when you get ready to cut the carbon fiber sheet, you need to have a good respirator and good eye protection. A dust mask is not sufficient.
Just about ready to fit the carbon fiber sideplates. Doing both saw builds at the same time has its challenges.
If it wasn't for the CR250R's long stroke the YZ125 looks bigger in proportion.
Slabbed up a little down draft table...pylon, 2×4, expanded metal and a 5 hp Ridgid vac.
View attachment 212358 View attachment 212359
It's just the right size for the motors when I'm sanding grinding whatever.That down draft table should be perfect!
It's just the right size for the motors when I'm sanding grinding whatever.
Should work good for spray painting parts too but probably better to install a dry wall dust bag to backup the expensive filter I put in it.