dwyatt
XS650 Addict
My roadracer build is finally done! I assembled the motor with the final mods and got it running prior to heading back to work for the month. When I get home I still have to make adjustments to the carbs and suspension settings, but should be ready to take it to the track soon and give it a try.
The motor was bored for 77.5mm JE 10-1/2:1 pistons, Craig Weeks ported head, new valves/guides/springs, Megacycle 30 cam, 36mm Mikuni flat slide carbs, custom 2-1 header with Shell megaphone, and total loss ignition. The suspension has been totally changed with cartridge emulators and air assist in the forks, and the rear is now a raised cantilever design with Fox Airshox to improve the weight distribution. Both wheels were rebuilt with 18" ridged aluminum rims, dual disks and braided steel lines up front, Avon racing rubber all around. Rear-sets, clip-ons and roadrace fenders along with the gas tank from an XS750 complete the chassis. I am expecting a good handling machine.
I latched onto this project as something to do strictly for the fun of seeing how far out there I could take it, yet still retain period correct technology. I cheated a little on the flat slide carbs (Mikuni instead of Lectron) and hydraulic clutch actuator, but otherwise stayed pretty close. Had to go with the Kenny Roberts paint job, anything else would have be a sacrilige......
This is a link to another forum that has more of the build history that many of you have followed through the years
- http://www.650rider.com/index.php?name=Forums&file=viewtopic&t=3945 .
This project has been going on for over 3 years, building this has been a blast, but it's nearly time to take it to the track. I didn't do any baseline dyno work, but it was probably pretty normal for one of these bikes. Once I get the motor broken-in, I plan to put it on a dyno for final carb tuning and a chance to get a look at the performance numbers after all this work and money. I'm hoping for upper 60's on the HP and I've tried not to do anything to hurt the torque. I'll be running oxygenated race fuel in it, which should help the HP a bit.
I got LOTS of help from all the XS forums on-line, there are some truely good and knowledgeable people out there more than willing to help. Thanks to all.
The motor was bored for 77.5mm JE 10-1/2:1 pistons, Craig Weeks ported head, new valves/guides/springs, Megacycle 30 cam, 36mm Mikuni flat slide carbs, custom 2-1 header with Shell megaphone, and total loss ignition. The suspension has been totally changed with cartridge emulators and air assist in the forks, and the rear is now a raised cantilever design with Fox Airshox to improve the weight distribution. Both wheels were rebuilt with 18" ridged aluminum rims, dual disks and braided steel lines up front, Avon racing rubber all around. Rear-sets, clip-ons and roadrace fenders along with the gas tank from an XS750 complete the chassis. I am expecting a good handling machine.
I latched onto this project as something to do strictly for the fun of seeing how far out there I could take it, yet still retain period correct technology. I cheated a little on the flat slide carbs (Mikuni instead of Lectron) and hydraulic clutch actuator, but otherwise stayed pretty close. Had to go with the Kenny Roberts paint job, anything else would have be a sacrilige......
This is a link to another forum that has more of the build history that many of you have followed through the years
- http://www.650rider.com/index.php?name=Forums&file=viewtopic&t=3945 .
This project has been going on for over 3 years, building this has been a blast, but it's nearly time to take it to the track. I didn't do any baseline dyno work, but it was probably pretty normal for one of these bikes. Once I get the motor broken-in, I plan to put it on a dyno for final carb tuning and a chance to get a look at the performance numbers after all this work and money. I'm hoping for upper 60's on the HP and I've tried not to do anything to hurt the torque. I'll be running oxygenated race fuel in it, which should help the HP a bit.
I got LOTS of help from all the XS forums on-line, there are some truely good and knowledgeable people out there more than willing to help. Thanks to all.
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