Author Topic: New aluminum rear sprocket...  (Read 1012 times)

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Offline BobR

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New aluminum rear sprocket...
« on: December 29, 2017, 12:09:05 pm »
  Well my aluminum rear sprocket came today as well as an offset front . Unfortunately I was seeing if I could run the front  "backwards" (toward the motor) but,alas, not enough room. Anyhow the rear sprocket is almost 2 lbs lighter and as I dont put that many miles on the bike should hold up fine. Bob

Reality is merely an illusion, albeit a very persistent one. Albert Einstein
 CB750K4(F2 engine)

Offline Feragos

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Re: New aluminum rear sprocket...
« Reply #1 on: December 29, 2017, 01:12:30 pm »
  Well my aluminum rear sprocket came today as well as an offset front . Unfortunately I was seeing if I could run the front  "backwards" (toward the motor) but,alas, not enough room. Anyhow the rear sprocket is almost 2 lbs lighter and as I dont put that many miles on the bike should hold up fine. Bob
Looks good, where you got it from? Cheers.

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Offline BobR

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Re: New aluminum rear sprocket...
« Reply #2 on: December 29, 2017, 01:43:02 pm »
  Well my aluminum rear sprocket came today as well as an offset front . Unfortunately I was seeing if I could run the front  "backwards" (toward the motor) but,alas, not enough room. Anyhow the rear sprocket is almost 2 lbs lighter and as I dont put that many miles on the bike should hold up fine. Bob
Looks good, where you got it from? Cheers.

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 thanks! Got it from Cognito Moto. Bob
Reality is merely an illusion, albeit a very persistent one. Albert Einstein
 CB750K4(F2 engine)

Offline Feragos

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Re: New aluminum rear sprocket...
« Reply #3 on: December 29, 2017, 01:49:30 pm »
  Well my aluminum rear sprocket came today as well as an offset front . Unfortunately I was seeing if I could run the front  "backwards" (toward the motor) but,alas, not enough room. Anyhow the rear sprocket is almost 2 lbs lighter and as I dont put that many miles on the bike should hold up fine. Bob
Looks good, where you got it from? Cheers.

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 thanks! Got it from Cognito Moto. Bob
Thanks!

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Offline tlbranth

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Re: New aluminum rear sprocket...
« Reply #4 on: December 29, 2017, 05:46:49 pm »
FWIW I don't race. Over the last 47 years I've tried many sprockets for my CB750 and my observation is that the aluminum ones don't last too long. Now I get steel from JTsprockets.
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Offline BobR

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Re: New aluminum rear sprocket...
« Reply #5 on: December 29, 2017, 06:22:25 pm »
FWIW I don't race. Over the last 47 years I've tried many sprockets for my CB750 and my observation is that the aluminum ones don't last too long. Now I get steel from JTsprockets.

  Yeah Ive assumed it will last significantly shorter than steel. That said I don't put that many miles on a year so I'll give it a go. Bob
Reality is merely an illusion, albeit a very persistent one. Albert Einstein
 CB750K4(F2 engine)

Offline seanbarney41

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Re: New aluminum rear sprocket...
« Reply #6 on: December 29, 2017, 06:42:51 pm »
Curious what that 'luminum puppy cost?....seems like the front always wears twice as fast as the rear so if it wasn't too expensive you are just saving the waste of a still good rear... as you should replace chain and sprockets as a set anyway
If it works good, it looks good...

Offline BobR

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Re: New aluminum rear sprocket...
« Reply #7 on: December 29, 2017, 07:21:56 pm »
 It is definitely pricey relative to steel at $78. I wanted something different and lighter. I took off 8lbs with my shortened fender, new taillight/turnsignals , deleted grab rail and this sprocket. More than 30lbs in all while getting the look I want. win -win IMO.
Reality is merely an illusion, albeit a very persistent one. Albert Einstein
 CB750K4(F2 engine)

Offline slikwilli420

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Re: New aluminum rear sprocket...
« Reply #8 on: December 29, 2017, 07:26:49 pm »
Many sprockets are made from 7075 aluminum, a grade as strong as mild steel. Places like rebel gears sell them for a reasonable price.
All you gotta do is do what you gotta do.

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Offline Yamahawk

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Re: New aluminum rear sprocket...
« Reply #9 on: December 29, 2017, 08:20:46 pm »
Many sprockets are made from 7075 aluminum, a grade as strong as mild steel. Places like rebel gears sell them for a reasonable price.
I have ordered sprockets from Rebel Gears, they are great people! And friends with a good friend here in Toledo, who runs PR Racing, let me know about them.
Charlie
1971 CB750K1 (newest bike), 1996 Royal Enfield 500 Bullet (therapy bike), 1981 Yamaha XV920RH, 2006 Kawasaki Concours (retirement bike), 1975 Yamaha RD350 (race bike), 1989 Honda VTR250 Interceptor (race bike), 1986 Kawasaki EX250 Ninja (race bike in progress), 1985 Honda Elite CH250, 1973 Yamaha GT1 80cc, 1974 Yamaha DT360 project bike.

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Online Don R

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Re: New aluminum rear sprocket...
« Reply #10 on: December 29, 2017, 08:46:19 pm »
 I had one made of nylon, the PO said it was the best part on the bike. Didn't wear and didn't eat the chain.
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