Author Topic: Offset sprocket  (Read 1004 times)

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Offline bert96

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Offset sprocket
« on: August 11, 2023, 01:19:50 PM »

 Anyone know where i could buy a front offset sprocket for my cb750 k4?


 Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline Alan F.

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Re: Offset sprocket
« Reply #1 on: August 11, 2023, 02:48:07 PM »
There are ten of them on ebay right now when I search for:

honda cb750 offset sprocket

Offline bert96

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Re: Offset sprocket
« Reply #2 on: August 11, 2023, 02:50:30 PM »
Can't find one that fit my bike!
Got a link?

Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?


Offline bert96

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Re: Offset sprocket
« Reply #4 on: August 12, 2023, 02:47:55 AM »
This model does not fit my K4....
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline RAFster122s

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Re: Offset sprocket
« Reply #5 on: August 12, 2023, 04:57:02 AM »
Bert it doesn't fit because eBay says so, or because you know this? I don't trust eBay parts list, wrong 25% of time
David- back in the desert SW!

Offline bryanj

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Re: Offset sprocket
« Reply #6 on: August 12, 2023, 05:12:04 AM »
Ebay probaly says it doesnt fit because its not standard for a 750k4.
Why do you want an offset sprocket anyway?
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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Offline robvangulik

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Re: Offset sprocket
« Reply #7 on: August 12, 2023, 05:31:08 AM »
This model does not fit my K4....
It should fit all 750 from '69 to '78, what's different on yours?

Offline bert96

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Re: Offset sprocket
« Reply #8 on: August 12, 2023, 05:55:21 AM »
I need a sprocket with the center like this

QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline bert96

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Re: Offset sprocket
« Reply #9 on: August 12, 2023, 05:55:48 AM »
Not like this

QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline bert96

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Re: Offset sprocket
« Reply #10 on: August 12, 2023, 05:57:52 AM »

But thats ok,i found a seller from Germany who make sprockets. He said that he can make what i need.


Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline denward17

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Re: Offset sprocket
« Reply #11 on: August 12, 2023, 09:50:53 AM »
Did you check JT Sprockets catalogue?

Offline bert96

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Re: Offset sprocket
« Reply #12 on: August 12, 2023, 10:27:31 AM »
Yes,i did. But they only have for the 750,900 and 1100f.


Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline enwri

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Re: Offset sprocket
« Reply #13 on: August 13, 2023, 10:03:27 AM »
Do you need the bolt holes, because that looks like the splines of a 77-78 sprocket.
77 CB 750 k.. 29 years and counting.
91 TDM 850 (No.34) so comfy and soft
8? XJ 550 meh...
76 XL 350 Super Sport stump puller..
80 XR 200 idiot proof
75 MX 250 b dangerous

Offline bert96

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Re: Offset sprocket
« Reply #14 on: August 13, 2023, 10:07:10 AM »
I need a sprocket with the center like this



Yep, the bolt holes are different for k bikes.
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline enwri

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Re: Offset sprocket
« Reply #15 on: August 13, 2023, 10:15:22 AM »
77-78 don't need the retainer bolt holes. It's also a 630. non offset on a 25mm shaft.
cb750 k7

 OK you're talking about the retainer holes not the splines.
« Last Edit: August 13, 2023, 10:49:50 AM by enwri »
77 CB 750 k.. 29 years and counting.
91 TDM 850 (No.34) so comfy and soft
8? XJ 550 meh...
76 XL 350 Super Sport stump puller..
80 XR 200 idiot proof
75 MX 250 b dangerous

Offline Airborne 82nd

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Re: Offset sprocket
« Reply #16 on: August 13, 2023, 06:03:00 PM »
I think he needs the two extra holes for a 74. The 77-78 does not have or need them they use the large center bolt. The offset is the issue. How much offset? The 77-78 have a 10mm offset but it is on the rear sprocket carrier.
icbw but don't think so
Airborne

Offline Airborne 82nd

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Re: Offset sprocket
« Reply #17 on: August 13, 2023, 06:08:53 PM »
Yes,i did. But they only have for the 750,900 and 1100f.


Bert

But you have a 750 ???

Offline bert96

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Re: Offset sprocket
« Reply #18 on: August 13, 2023, 06:11:07 PM »

 750 K. Not a. F.


 Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline Airborne 82nd

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Re: Offset sprocket
« Reply #19 on: August 13, 2023, 06:18:07 PM »
I know you said you found someone to make one. But could you explain what it is you are doing? Did you change something in the rear?

Offline bert96

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Re: Offset sprocket
« Reply #20 on: August 13, 2023, 06:26:09 PM »

 New wheels,New swingarm New everything!
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline bert96

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Re: Offset sprocket
« Reply #21 on: August 13, 2023, 06:51:30 PM »

 No vibration at all!?!


 Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline bert96

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Re: Offset sprocket
« Reply #22 on: August 14, 2023, 04:38:01 AM »

 I don't have access to that... :(


 Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline bert96

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Re: Offset sprocket
« Reply #23 on: August 14, 2023, 06:16:23 AM »
I already bought the sprocket....


Bert
QA50 1969,ST-90 1974,mb5 1982,rz350 1983,shadow 1100 1985,vf1000f 1985,BMW K1 1990,shadow tourer 1100 2001,vfr 750 1994,vtr250 199?

Offline Kaze

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Re: Offset sprocket
« Reply #24 on: September 05, 2023, 08:01:47 PM »
"But you have a 750 ???"

Front sprocket for CB750K6 and older was held on with 2 bolts and a bracket.
Front sprocket for CB750K7 and K8 had 1 bolt in the center.
Boatloads of changes in 1977. Chain and rear sprocket are also not interchangable.