FLYWHEEL ON.
OK, so I know I'm not the first person to do this, but thought I would share my experience... The machine shop was able to get the weight down from 4.11 lbs to 2.31 lbs. I installed it myself over a couple evenings.
A couple pics(Stock flywheel on the left):
[img width=600 height=381]http://i110.photobucket.com/albums/n85/dietrichpfeifer/FlywheelInstall/FlywheelInstall3-20-08b.jpg[/img]
[img width=600 height=408]http://i110.photobucket.com/albums/n85/dietrichpfeifer/FlywheelInstall/FlywheelInstall3-20-08a.jpg[/img]
To do the fly wheel install you need a cover puller (ducati specific or modd'ed universal puller), some red locktite, blue locktite, case sealer (grey Threebond, 1104), metric allens, torxs bits to swap the alternator rotor, 30mm deep socket, impact wrench, torque wrench for samll bolts, torque wrench good for at least 150 ft.lbs, some degreaser such as brake cleaner, a bunch of rags and a penny. The penny is used to jam in the starter gear when you torque the nut back on, works great. Oh, and whatever you need to do an oil change (minimum, new oil).
I had to get a couple tools, so I went to what I like to call "the dollar store for guys", Harbor Freight Tools.
I got this electric impact wrench, 240 ft.lb capacity, less than $40:
http://www.harborfreight.com/cpi/cta...emnumber=45252
And this deep socket set under $20:
http://www.harborfreight.com/cpi/cta...emnumber=34683
[img width=600 height=450]http://i110.photobucket.com/albums/n85/dietrichpfeifer/FlywheelInstall/FlywheelInstall3-20-08e.jpg[/img]
I picked up the flywheel from the machine shop on Wednesday, and had the bike back together Thursday night (adjusted valves also, which added some time). Rode to work and around town yesterday, and it feels great. It's a subtle change. The bike feels a little lighter, and a bit more rev happy. Idles fine, but you can feel the power pulses a little more through the pegs. So far what I really like about it is shifting! It is so easy to rev match now that you can just snick it into gear when up or downshifting and the motor just seems to imediately be at the right RPM, smooth... (I've heard of lightweight flywheels being called a "poor man's slipper clutch".)
[img width=600 height=450]http://i110.photobucket.com/albums/n85/dietrichpfeifer/FlywheelInstall/FlywheelInstall3-20-08d.jpg[/img]
I'll have a better impression when I can get it out in the twisties, but for now I would consider this a worthwhile mod! 8)
