Boingy-boingy

Hey all,

On my trackday I noticed a tendency of the rear to pogo around a bit when I get on the throttle in a bumpy corner. Towards the end of the day I took my bike over to Aftershocks to have them do a quick setup on it, but that was before I really noticed it the pogo-ing, and I didn't get a chance to ask them afterwards.

The bike generally felt better after they tweaked it, so maybe I was simply riding it more aggressively and brought it out, or maybe they turned down the rebound. I've noticed it on the street a few times since then too.

Do you think its insufficient preload in back, and/or rebound? I'm hoping it doesn't need more comp, coz I had that cranked pretty stiff at the track. Any ideas? Like I said, this only happens when I'm rolling fairly hard on the throttle out of a bumpy corner... the damping seems great if I'm just bombing down some bumpy road.

Bump. What, no love?

Rear sag measurement?

Hmm, that's set. I think it was 30mm w/o gas.

MLai_AFM#138 said:

Rear sag measurement?

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wakked1 said:

Hmm, that's set. I think it was 30mm w/o gas.

Click to expand...

How much is it w/ Lucas in riding gear?

Oooh, just noticed this post. You took your ZX12R to the track? Wow!!! Which track did you ride? I've been wanting to do that since I bought my 00'; but the stock suspension w/300lbs. of rider & gear just don't work too good. (surprise, surprise.)

Been wrenching on this shock since I bought it, & it's ok at 9-10ths riding, after that it gets friggin' hairy. Both the front end & the shock needs to go to LE/Aftershocks for a re-build & re-valving. I have never been happy w/both ends, especially the shock seems to be lacking in the high-speed damping department.

So which track did you ride, & how did you like the "Big Ninja" on the track?

Sorry, I should have been more clear.. it was 30mm with me in riding gear and maybe 1 gallon in the tank.

MLai_AFM#138 said:

How much is it w/ Lucas in riding gear?

Click to expand...

Hey Dave,

I liked it a lot actually (this particular problem aside, as I think its just a tuning issue). I have an 02, and the suspension has been tweaked quite a bit from the A series.. fork is stiffer in both comp and springs, and rear spring was softened a little but I think the compression is pretty good. At least I had to take out some high speed comp when I got back on the pavement as it got too harsh. I used to have an 00 and I liked the changes, but then again I'm a lot lighter (~200lb with gear).

You probably need a custom valved suspension, along with stiffer springs front & rear?

The 12 is a decent track tool... not as lithe as a literbike, but with the right suspension setup (and bigger balls than mine) it can be damn quick. Cornering clearance is pretty good (better than other GT bikes), though your toes will touch down fairly regularly. I might get rearsets, except they're kinda expensive... actually like to get just a billet mount that moves them back, without having to replace the whole assembly.

I was at Thunderhill, which is a pretty good track for the 12. Though I'd love to do Laguna.

Check out http://bayarearidersforum.com/forums/showthread.php?s=&threadid=36269 fer pics.

EastBayDave said:

Oooh, just noticed this post. You took your ZX12R to the track? Wow!!! Which track did you ride? I've been wanting to do that since I bought my 00'; but the stock suspension w/300lbs. of rider & gear just don't work too good. (surprise, surprise.)

Been wrenching on this shock since I bought it, & it's ok at 9-10ths riding, after that it gets friggin' hairy. Both the front end & the shock needs to go to LE/Aftershocks for a re-build & re-valving. I have never been happy w/both ends, especially the shock seems to be lacking in the high-speed damping department.

So which track did you ride, & how did you like the "Big Ninja" on the track?

Click to expand...