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OEM sprockets?
Posted: Fri Jun 25, 2021 3:53 pm
by CBX1000FAN
I searched the forum but I see different responses to the question regarding the OEM sprockets (front & back) for the 1978 CBX 1000... Am I correct that it is 18 teeth front and 42 rear? Does this change with a 530 chain conversion? Regards!
Re: OEM sprockets?
Posted: Fri Jun 25, 2021 10:04 pm
by steve murdoch icoa #5322
You can probably find it closer to home but Bob At CBXPerformance sells a 530 conversion package.
Some info in this thread.
viewtopic.php?f=24&t=11445
https://www.cbxperformance.com/oscommerce/
Re: OEM sprockets?
Posted: Sat Jun 26, 2021 7:10 am
by daves79x
Stock '79 sprockets were 15/35 with a 630 chain. '80-'82 were 18/42 with a 530 chain.
Dave
Re: OEM sprockets?
Posted: Sat Jun 26, 2021 12:42 pm
by CBX1000FAN
Thanks Dave. It seems to be the same ratio of 2.33 then... If I upgrade to a 530 chain the two sprockets will be 18/42 and the actual gearing will not change. Regards!
Re: OEM sprockets?
Posted: Mon Jun 28, 2021 7:51 am
by daves79x
Yes, that was Honda's intention - to keep the same ratio. They got it about perfect and wanted to keep it there. Just know that the chain tensioners for the 530 chain (stock on the '80) are a bit longer. If you use the original '79 ones for the 630 chain, adjustment will be more limited, but certainly OK if you can't find a set of '80 adjusters.
Dave
Re: OEM sprockets?
Posted: Mon Jun 28, 2021 11:51 am
by CBX1000FAN
daves79x wrote: ↑Mon Jun 28, 2021 7:51 am
Yes, that was Honda's intention - to keep the same ratio. They got it about perfect and wanted to keep it there. Just know that the chain tensioners for the 530 chain (stock on the '80) are a bit longer. If you use the original '79 ones for the 630 chain, adjustment will be more limited, but certainly OK if you can't find a set of '80 adjusters.
Dave
Thanks Dave!!