Probably a little premature to start the "build" thread as there's not a lot of building going on just yet. A HUGE thanks to Mike (mg15 here) for making this come together, he's doing the frame work and has been a huge help already in trying to sort the exhaust and airbox fitment issues that are going to eventually need to be addressed. He got the wheels in my head turning on this thing as he's building one for himself for the OVRP 4-hour endurance series. I have been wanting to do a 65 for a long while for MD Minimoto and NJMiniGP, but the miniscule size kept me from it. This bike fixes all of that, 30 minutes sessions should be no problem on it.
The goal is to have it together and sorted by the 3/31 opening day at Sandy Hook. If all goes well and the motor is serviceable, that should be doable.
17" rims and spokes are on the way from RAD, and springs are on the way from Cannon Racecraft. I initially planned to go with 12s in the interest of making the bike as light as possible with the little motor in the heavier chassis, but they are out of 12x2.5 rims and will be for a long while it sounds like, so 17s it is.
The frame is still in New York being wrapped up. It should be welded up, media blasted and on the way down this week. I have a 65 motor coming that needs God knows what. I'm hoping it's not a basket case. Cases will be split the day it gets here so I can get whatever it's going to need on order. Brent at www.tdc2strokeperformance.com is going to get the cylinder for port work along with a couple of cylinder heads. He's going to set one head up aggressively for sprint races, and a milder, "safe" head for the endurance stuff. He's concerned about heat build-up in the 4-hour races, but he thinks with the dual radiators of the 85 chassis he can build a little more compression in to make a little more power and still have it live through the race. Will it be competitive against the 150 air-cooled 4-strokes? That is the big question.
The suspension is going to be sent down to Dave at FastBikeIndustries after the springs show up from Cannon.
Here's a 65 motor being mocked up in the 85 frame. It looks "silly" in there for sure. The width at the swingarm is exactly the same on both motors, and the rear lower motor mount lines up perfectly. The sprockets also line up perfectly. The upper mount did need to be moved and extended. The 65 motor uses 420 chain, the 85 sprockets are 428. Once I figure out the gearing Mike is going to turn down some rear sprockets so I can use the lighter, smaller 420 chain.
The frame after the mods and hit with some primer.
I sure do seem to have a thing for clapped-out 2004 Austrian Shitbuckets. This makes #3. I picked up the 85 "chassis donor" today. A little rough but not terrible.
I spent some time with it this afternoon with a bottle of Simple Green and a scrub brush, trying to get the mud and grime off enough to work on it. I'll tear it down this week to get a list together of what it needs.
That's it for now...much more to follow.