My 1977 KZ750 Chain BROKE today while I was riding

  • JWKZ750
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16 Apr 2017 19:00 - 16 Apr 2017 19:01 #759332 by JWKZ750
My 1977 KZ750 Chain BROKE today while I was riding was created by JWKZ750
Luckily I was only going 15 MPH but it was scary. Bike skidded but I was able to lay her down without a scratch. Here are pics of my bike and the broken chain, and my bike being towed. Can anyone suggest a replacement chain and sprocket?
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Last edit: 16 Apr 2017 19:01 by JWKZ750.

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  • SWest
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16 Apr 2017 19:03 #759333 by SWest
Replied by SWest on topic My 1977 KZ750 Chain BROKE today while I was riding
Was it the chain or the master link?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • JWKZ750
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16 Apr 2017 19:07 - 16 Apr 2017 19:08 #759334 by JWKZ750
Replied by JWKZ750 on topic My 1977 KZ750 Chain BROKE today while I was riding
Looks like the master link maybe. Not sure. Heres a pic
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Last edit: 16 Apr 2017 19:08 by JWKZ750. Reason: Added photo

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  • SWest
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16 Apr 2017 19:12 #759335 by SWest
Replied by SWest on topic My 1977 KZ750 Chain BROKE today while I was riding
That looks like a half link. Pic from the top?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • JWKZ750
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16 Apr 2017 19:14 - 16 Apr 2017 19:15 #759337 by JWKZ750
Replied by JWKZ750 on topic My 1977 KZ750 Chain BROKE today while I was riding

Here is the only other pic i have
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Last edit: 16 Apr 2017 19:15 by JWKZ750. Reason: Added photo

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  • SWest
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16 Apr 2017 19:35 #759339 by SWest
Replied by SWest on topic My 1977 KZ750 Chain BROKE today while I was riding
No eBay APP ID and/or Cert ID defined in Kunena configurationNo eBay APP ID and/or Cert ID defined in Kunena configurationNo eBay APP ID and/or Cert ID defined in Kunena configurationSure looks like a half link. That's a no no. I'm running a EK 630 O ring chain. Very happy with it. I know that's not what you have but cheap chains are dangerous. Got a good price from these guys. You might try them or call Z1 Enterprizes.
Steve




Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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  • JWKZ750
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16 Apr 2017 19:45 #759340 by JWKZ750
Replied by JWKZ750 on topic My 1977 KZ750 Chain BROKE today while I was riding
Really Appreciate it. But I thought KZ750 change are 530, not 630 and 14T. Forgive me, Im new to this bike stuff and learning, but I dont want to put items that arent spec on the bike. Can you confirm the items you linked (which I really appreciate you doing) are spec and appropriate to my '77 KZ750?

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  • JWKZ750
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16 Apr 2017 19:48 #759341 by JWKZ750
Replied by JWKZ750 on topic My 1977 KZ750 Chain BROKE today while I was riding
This is what another posted wrote some time ago about chains and sprockets.

"
I run 530 chain on my 750 twin, stock gears are 16/38. You can go up to 17T on the front and still fit, not 18. 32T on the rear is minimum and the chain heads do rub on the aluminum sprocket holder (wheel hub).

I ran 16/32 and was VERY happy for many years. I weighed about 160, so the bike didn't have a big load to pull. I also am not into drag racing, so less acceleration doesn't bother me. It cruised much smoother."

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  • Scirocco
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16 Apr 2017 20:01 #759342 by Scirocco
Replied by Scirocco on topic My 1977 KZ750 Chain BROKE today while I was riding
It looks like the chain lock (master lock)was not good riveted
It happens to me on my Hayabusa with a D.I.D chain. I lost the chain on a Highway in Austria, Thank goodness nobody was hurt.
I investigate i use the wrong tool for pressing the master lock for D.I.D chains.

It should look like this

My 1975 Z 1 B 900 Project

www.kzrider.com/forum/11-projects/605133...ears-deep-sleep-mode
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  • SWest
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16 Apr 2017 20:06 #759344 by SWest
Replied by SWest on topic My 1977 KZ750 Chain BROKE today while I was riding

JWKZ750 wrote: Really Appreciate it. But I thought KZ750 change are 530, not 630 and 14T. Forgive me, Im new to this bike stuff and learning, but I dont want to put items that arent spec on the bike. Can you confirm the items you linked (which I really appreciate you doing) are spec and appropriate to my '77 KZ750?


Contact them for the proper sizes. They will be a little cheaper than my larger outfit.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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  • SWest
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16 Apr 2017 20:09 #759345 by SWest
Replied by SWest on topic My 1977 KZ750 Chain BROKE today while I was riding
750 twin or four?
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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16 Apr 2017 20:13 - 16 Apr 2017 20:13 #759348 by 650ed
Replied by 650ed on topic My 1977 KZ750 Chain BROKE today while I was riding

SWest wrote: .................... cheap chains are dangerous......................


Truer words were never spoken! Don't replace that chain with another cheap piece of junk! Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
Last edit: 16 Apr 2017 20:13 by 650ed.
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