Rocker Mayhem, Take Two

Well, I took the 748 in to Nichols Manufacturing for my 18,000 mile service on November 13th, 2001, figuring it was going to be business as usual. Got a call from Jim on the 15th, asking me if I was ready for my holiday present. So, I get all excited asking if he's done with the bike already? No such luck...

Turns out that two of the closing rockers on the front cylinder were doing the chrome flaking on me, just like the openers had done 12,000 miles earlier. Shit. Luckily, he had a set of four closers already MegaCycle'd in stock, so used those in my bike. None of the closers in the rear cylinder were wasted, but I'm expecting to have to do those at the 24,000 mile mark...

Here are some pictures of the mess that Nichols uncovered. Click on a thumbnail to see a larger version...

Bad closer #1, with a huge patch of missing chrome.

Bad closer #2, with a smaller patch of missing chrome (hard to see in this photo).

Better shot of closer #1.

Somewhat better shot of closer #2.

It's a bit easier to see the damage to closer #2 in this picture.

Closer #1, with the damage largely washed out by the flash.

Closer #1, with the damage frighteningly obvious...

These are the other two closers, without the chrome flaking. This is what they should all look like. Since the head has to come off to replace the closers, I had all four replaced with MegaCycle'd rockers (certainly don't want to do this twice!)

A tighter shot of the two good rockers...

Nichols installed this rear fender for me at the same time the bike was down for servicing. It's a really nice unit, made by RoadRacing in Italy, and distributed here in the US by Fast by Ferracci. It's a pain to install, though, because the right side attaches to the lower shock mount, which of course requires the shock to be unattached at the bottom. It also requires the exhaust to be removed to get the mounting bolt in. The upside, however, is a nice solid mount, as opposed to the units which only attach on the left side.

This is why the bike badly needed a hugger...riding year-round just cakes the rear shock with road grime.

Another left-side shot of the hugger...

The ride side of the hugger; what you can't see is the mounting behind the exhaust...

The stock clutch basket. Note the nice grooves...

Another shot of the stock, beat-up basket. Although the clutch wasn't slipping, it was making an awful racket (even for a Ducati) due to the slop between the clutch tabs and basket. An aluminum Nichols clutch basket and Barnett DryFlex clutch pack were installed instead. This setup is supposed to remove 3.5 pounds of rotating mass...

A closeup of the damaged fingers, showing the pounding they were encountering with the clutch plate tabs.

Another closeup...

Here's what the stock clutch pack looks like after 18,000 miles. As you can see, the tabs on the plates have taken a pretty severe beating.

A closeup of the wasted tabs...

And one last one. According to Nichols, the stock clutch tabs only contact 55% of the available tab area, whereas their aluminum basket and Barnett clutch combo make over 90% contact. The new setup is so much quieter it's not even funny...

Last modified: Friday, 16-Nov-2001 19:11:34 PST
Questions/Comments/Problems: Paul H. Yoshimune