Primary chain length

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Eric
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Primary chain length

#1

Post by Eric » Mon May 18, 2009 11:21 pm

I have seen a post in the forum on this subject and tried to call the
number at Kick-Start but it was no good. Mid-USA carries the 84 link primary. The question I have is, Am I able to run a 24 tooth motor sprocket with this setup? They recomend a 25.
Thanks
Eric



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Re: Primary chain length

#2

Post by Hauula Pan » Thu May 21, 2009 3:42 am

Eric, I don't know for sure about running a 24 tooth with an 84 link chain, I'm guessing it would depend on just how much adjustment you have available on your trans. plate & rear wheel. On my 52FL I have always run an 82 link primary with a 23 tooth on the motor, 37 tooth clutch hub, 25 tooth drive and 51 at the wheel. This has always been an extremely high geared setup. Not much off the line but plenty of top end. Enough to peg the speedo and still had plenty more but I backed off. My engine is taper shaft and engine sprocket non- compensating. The fact that I run 24 teeth with 82 links and your chain maker recommends a 25 tooth with 84 links makes me think that your 24 tooth falls right in between, making 82 too tight & 84 too loose, unless you have plenty of adjustment available at both the trans. plate & rear wheel, as moving one will affect the other. Sorry I don't have specifics on the 24/84 combo. but hope my figures help and depending on how you want things geared in the RPM vs MPH you do have plenty of options. Any one have more specific info. on using 24/84???

Eric
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Re: Primary chain length

#3

Post by Eric » Fri May 22, 2009 2:07 am

Thanks for the really good info. Looks like I'll have enough adjustment so I'll see how it goes.
Eric

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Re: Primary chain length

#4

Post by VintageTwin » Fri May 22, 2009 3:55 am

B the primary chain from kick-start m/c parts (616) 245-8991 (10-5 EST), or someone else, but don't master-link a primary chain :!: The one chan will fit up to a 24T motor sprocket, because you're moving the 4 spd. trans. back and forth in adjustment travel. You don't need anything else. Who told you you need a 25-T motor sprocket? They don't even make one do they :?:
Run a 24-T motor and a 25 or 26 (real tall 3rd to 4th) transmission sprocket on a 1936-1964 OHV Big Twin.

Pans are nice motorcycles to own.

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