Front, no tire, no axle:
Stock MZ Skorpion: 16 lbs.
Stock SV650 (2nd gen, 2 discs): 15 lbs.
The dual-disc setup obviously requires a second caliper and brake line, so there's a bit of additional weight. On the other hand, the SV axle is noticeably lighter than the MZ axle, which I can only assume is made from depleted uranium. Jesus. It's pretty much a wash, although I will be experimenting with a single-disc setup for the SV wheel, I think. I'm kind of really digging the additional braking power of the dual-disc setup, though! Also, the SV rim allows you to run the most modern Superbike rubber available. I have a U.S.-made AMA Pro Racing spec tire on there now. I think it's a little stiff for the Single, but I am still playing with suspension.
Rear, with sprocket, carrier, and disc (no axle):
Stock MZ Skorpion: 36 lbs with Dunlop Q2 tire, 160/60/17.
Stock SV650 (2nd gen): 28 lbs with Dunlop D209GP UK-made tire, 160/60/17.
That, obviously, is a pretty friggin' huge difference. The UK-made D209 tire kicks ass, too. I am doing some testing for Dunlop on a U.S.-made version of this tire, but I've gotta say the UK one is worth the money - $270 or so after tax, etc., out here on the West Coast of the U.S.
Got the motor issues sorted out - went with a 9.9:1 piston and kept the TDM ignition. Did a "no-sessions" track day yesterday. Motor guy/tuner said, "Do about three laps, then come in and check things over." I forgot if he said three laps or eight, so I did 10. Everything was fine, so I went back out. I got involved in chasing around riders with mad straight-line skills, so sometimes it would take three or four laps to figure out how to get past them. Then I'd get two clear laps and find myself behind someone else who desperately needed to be passed by me. The upshot is that I finally pulled back in and asked my wife how long I'd been gone - and she said it was nearly an hour.
Had a LOT of fun. Will post pics soonest - M
- Chuckwalla Valley Raceway, April 8, 2012
)..any chance for a kit with parts list ,spacers etc?