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  #1  
Old 6th November 2018, 04:32 PM
rebelBusa rebelBusa is online now
Clubman
 
Biker.ie Member No. 24193 from Cork
112 posts since Oct 2010
Motorbike: Hayabusa K1 & FZ1
Default Anyone in Cork to Undercut/racecut Gears?

Hi Guys,

The Busa has started to experience the dreaded 2nd gear slip so I'm pulling the engine and gonna split the crank case. From my research it seems that it might be either of: Worn Dogs on 2nd Gear cogs: Bent shift forks: or Bent shift fork shafts. Or all of the above. I'll have a look before deciding what to do.

I am tempted to undercut 2nd gear cos it's the only gear in the Hayabusa that isn't undercut, so I have the following options:

1. But a new undercut transmission from the US. Big bucks 600 approx
2. Take out 2nd gear and get it undercut. More work and higher possibility of failure.
3. Buy now 2nd gear cogs and have them undercut. Half the price of a transmission but more work.

So, doesn't anyone know of somebody in Cork who would undercut the dogs on my 2nd gear. Needs to be highly precise so I'd only use someone with a good reputation.

Thanks
Tony
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  #2  
Old 6th November 2018, 04:59 PM
Gixxer's Avatar
Gixxer Gixxer is offline
Resident gynaecologist
 
Biker.ie Member No. 19392
12,914 posts since Nov 2009
Motorbike: NSU Quickly
Modifications: Lobotomy
Default Re: Anyone in Cork to Undercut/racecut Gears?

If you're keeping the bike, I'd probably be thinking of buying the new transmission.
The gearboxes are shite in them. Mine started jumping out of fifth gear, then a few months later second gear, then I rebuilt the box with all undercut gears.
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  #3  
Old 6th November 2018, 05:03 PM
rebelBusa rebelBusa is online now
Clubman
Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 24193 from Cork
112 posts since Oct 2010
Motorbike: Hayabusa K1 & FZ1
Default Re: Anyone in Cork to Undercut/racecut Gears?

Originally Posted by Gixxer
If you're keeping the bike, I'd probably be thinking of buying the new transmission.
The gearboxes are shite in them. Mine started jumping out of fifth gear, then a few months later second gear, then I rebuilt the box with all undercut gears.
Yeah, I'm leaning that way myself, thanks bud. I will be keeping it. I have it 13 years now and I'm gonna retire it as my classic in a few years time :-)
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  #4  
Old 7th November 2018, 10:17 AM
Dymag Dymag is offline
Clubman
 
Biker.ie Member No. 36943
116 posts since Feb 2017
Motorbike: ZX12r, 7/11 Streetfighter
Default Re: Anyone in Cork to Undercut/racecut Gears?

What year(s) of Busa does this gearbox issue effect????
I presume Suzuki fixed this eventually?????
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  #5  
Old 7th November 2018, 03:52 PM
rebelBusa rebelBusa is online now
Clubman
Original Poster of This Thread Topic Starter
 
Biker.ie Member No. 24193 from Cork
112 posts since Oct 2010
Motorbike: Hayabusa K1 & FZ1
Default Re: Anyone in Cork to Undercut/racecut Gears?

Originally Posted by Dymag
What year(s) of Busa does this gearbox issue effect????
I presume Suzuki fixed this eventually?????
As far I know, it's all Gen1 years. Not sure if they fixed it after that with the Gen2 as I wasn't searching. But apparently all of them go eventually depending on how hard they're ridden. Mine is a K1 with 93,000 km on it. I've seen guys on Hayabusa.org saying theirs went at 15k. Apparently drag racing or wheelies dont help
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  #6  
Old 7th November 2018, 04:15 PM
Dymag Dymag is offline
Clubman
 
Biker.ie Member No. 36943
116 posts since Feb 2017
Motorbike: ZX12r, 7/11 Streetfighter
Default Re: Anyone in Cork to Undercut/racecut Gears?

Originally Posted by rebelBusa
As far I know, it's all Gen1 years. Not sure if they fixed it after that with the Gen2 as I wasn't searching. But apparently all of them go eventually depending on how hard they're ridden. Mine is a K1 with 93,000 km on it. I've seen guys on Hayabusa.org saying theirs went at 15k. Apparently drag racing or wheelies dont help
thanks for that
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  #7  
Old 7th November 2018, 07:48 PM
Unfazed Unfazed is offline
MotoGP Star
 
Biker.ie Member No. 10688 from Cork
865 posts since Jun 2008
Motorbike: Fazer 1000, 600 & Serow
Default Re: Anyone in Cork to Undercut/racecut Gears?

Why not ask Declan Swanton at Swans Nest Business Park, Pouladuff. He may know someone if he cannot do it himself
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  #8  
Old 7th November 2018, 10:32 PM
Airman Airman is offline
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Biker.ie Member No. 2733
3,482 posts since Feb 2006
Default Re: Anyone in Cork to Undercut/racecut Gears?

Might be worth a call..
Southern Racing Motorcycles in Midleton.
They have a full cnc workshop also as a separate business so they know both.
McDonough Engineering.
Or they might tell you feck off
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