Haybusa Parts and Service Member Support

Author Topic: 21 Tooth Primary Sprocket?  (Read 763 times)

Offline donpearsall

  • Rider
  • ***
  • Posts: 274
  • Gender: Male
21 Tooth Primary Sprocket?
« on: August 26, 2016, 06:24:58 PM »
Does anyone know of a source for a 21 or 22 tooth primary sprocket? I have a heavy duty countershaft. I have not been able to find a source - it seems they stop making them at 20 tooth. I am using my Hayabusa engine to build a completely custom race bike, and it would make fitting the engine better if I had a 21 or 22 tooth so I could use a larger rear sprocket.

Thanks
Don

Online RansomT

  • Post Master
  • *****
  • Posts: 1092
  • Gender: Male
Re: 21 Tooth Primary Sprocket?
« Reply #1 on: August 26, 2016, 06:53:37 PM »
Will a 21 or 22 even fit?  Doesn't it hit the clutch push rod?
Fastest 1.5-Mile Pass - 252.222
Fastest 1-Mile Pass - 244.2997
Half Mile - 211.47
Fastest Nitrous Bike
Production Bike
211.079 LTA. P/P 1350

Offline donpearsall

  • Rider
  • ***
  • Posts: 274
  • Gender: Male
Re: 21 Tooth Primary Sprocket?
« Reply #2 on: August 26, 2016, 07:32:15 PM »
Very good question Ransom! I just ran out and measured. A 21 tooth would fit but be close, but a 22 would be too close. I may be sticking with the 20 tooth I already have.
Thanks for your reply.
Don

Offline wildphil69

  • Post Master
  • *****
  • Posts: 1924
  • Gender: Male
Re: 21 Tooth Primary Sprocket?
« Reply #3 on: August 27, 2016, 02:45:26 PM »
im 99% sure a 20 is the biggest you can go without push rod problems
Nitrous is like a hot chick with STD'S...You know you wanna hit it but your just not sure of the consequences.

Offline Vanishing Point

  • Rider
  • ***
  • Posts: 79
  • Gender: Male
  • My Own Busa as a Cursor on TomTom
    • HayaBusaClubHolland
Re: 21 Tooth Primary Sprocket?
« Reply #4 on: November 07, 2016, 01:22:58 PM »
20 is the biggest sprocket
Michi Merse NightriderTeam use it on his LSR Turbo bike
Busa'00 Bleu/Silver,Front Drop 2"and Rear 3"
I like Dragracing from 1976
Busa is FUN,FunnyBike is a Hayabusa