Having spent a long time looking for a suitable donor bike, I snapped up this ebay bargain.........
![Image](https://s19.pixxxels.org/iuv2g03gj/RMZ250_rolling_chassis.jpg)
........a 2005 Suzuki RMZ250 motocrosser, complete bar it's (4-stroke) motor. Once home, I stripped it down and proceeded to sell-off all the parts that I don't need (most of the bike, actually!) For this project I only need the frame, swing arm, shock and linkages and the front forks. So the wheels (with Talon hubs), the carb and other sundry items have found new homes, which has helped to recoup almost all of the purchase price of the rolling chassis.
My original intention was to fit a parallel-twin motor from an RG250, so as to mimick the original TDR250, but knowing how crap these motors are, I decided to use one of the RGV250 motors I have in stock.
I want the bike to run 17" wheels front and rear so I have a good choice of tyres, and lurking in the corner of the garage are these..........
![Image](https://s19.pixxxels.org/3w827tz0j/officej8898-img600x450-1494678990orakpy30131.jpg)
........a pair of NK42A Goose wheels that I originally purchased for my GT750 track bike. Single front disc fits the brief (and the forks too, although the spindle is a lot smaller in diameter than the RMZ spindle) but some top-hat bushes in the fork leg bottoms will sort that. The rear wheel will require similar bushes for the RMZ wheel adjusters, and needs metal removing from the cush drive to allow the wheel to centralize in the swing arm.
First job was to decide how to fit the RGV motor into the RMZ frame. And this is how to do it........
![Image](https://s19.pixxxels.org/tya37uzcz/292.jpg)
![Image](https://s19.pixxxels.org/yudpzjzib/291.jpg)
![Image](https://s19.pixxxels.org/bwqya25c3/293.jpg)
![Image](https://s19.pixxxels.org/6mlzirl37/294.jpg)
![Image](https://s19.pixxxels.org/l8d070hvn/296.jpg)
![Image](https://s19.pixxxels.org/60x0mnq0z/297.jpg)
.......The whole engine cradle unbolts to allow easy removal of the motor (not that it will be necessary - it's a Suzuki)
![Very Happy :D](./images/smilies/icon_biggrin.gif)