Undercut or replace gear?

[GSXTacy]

OK, so I will be pulling the motor and cracking the cases because the last week of the season, I felt 2nd "jump" about 3 times under hard acceleration. I know the gear can be undercut. A buddy that is helping me (and very knowledgeable about busa's) is suggesting that I just replace the 2nd gear with a new one. I reasoning is this. The bike in an 05 and has 30K miles on it and the problem just showed up. Will I have bike another 30K? I dont know, most likely not. I'm sure most of the damage occured in the first year and a half that I had it. I ride much easier now than I ever did before. Adding a new gear instead of undercuting will be much cheaper and no waiting on a shop to get it done. Whats everyones feelings here (I trust my brothers and sisters words)? The budget is a big concern, I would like to go the cheaper route if I would work for me, but my mind is not made up. Any opinions or experiences I should know about? Thanks in advance.

 

[Red05]

I've been thinking about this same thing. If you don't plan to slam 1-2 shifts except rarely, it seems the stock set up should be fine. The history of your bike supports that. I like to wrap it out every now and then so I'm either going undercut or '09

 

[mike1180]

It might depend on the condition of the original gear when you get it out.
It may be damaged and then you would have to buy a new gear to have undercut (do both), or at best weld it and then undercut.
I don't like the welding idea as any weld may be more subject to breakage later on.
It will depend when you crack it open.
IMO

 

[GSXTacy]

I've been thinking about this same thing. If you don't plan to slam 1-2 shifts except rarely, it seems the stock set up should be fine. The history of your bike supports that. I like to wrap it out every now and then so I'm either going undercut or '09

I guess it will depend on what I find once I get in there.

 

[dadofthree]

Replace it with a new gear. I'm not sure undercutting would fix your problem. Your knowledgeable friend should be a big help in this decision. Good Luck

 

[In10SS]

It's not like you're missing a bunch of great riding. If you're going to all this trouble, make it the best it can be. When it's done you'll never have to worry again about hittng a questionable shift and wondering if you did more damage.

 

[johnstein]

undercut and be done