I have a 1971 Norton Highrider. Naturally it feels as if its geared lower than newer models are. My question is will a 19 tooth front sprocket off a 72 Norton fit/work and will it increase speed while reducing rpm's. Thanks for any input. semper fi devildog
Front Sprocket
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19T gearbox sprocket
Devildog,
The 19T sprocket on the '72 combat engined 750s was done to lower the gearing not raise it. Changing to this will do the opposite of what you want. Get a 21T gearbox sprocket to lower your engine rpm at a given speed. If you already have this you can go to a 22T.
Devildog,
The 19T sprocket on the '72 combat engined 750s was done to lower the gearing not raise it. Changing to this will do the opposite of what you want. Get a 21T gearbox sprocket to lower your engine rpm at a given speed. If you already have this you can go to a 22T.
21t Sprocket
Thanks Dave, I need to get some books out and research. I am not so concerned about the power of the Highrider but would rather have a bit more speed and lower RPM. So if I understand correctly I need to make the gear change vice the primary or rear sprocket? Tks again. semper fi devildog
Thanks Dave, I need to get some books out and research. I am not so concerned about the power of the Highrider but would rather have a bit more speed and lower RPM. So if I understand correctly I need to make the gear change vice the primary or rear sprocket? Tks again. semper fi devildog
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Dev
The Workshop manual for Models 850 & 750 Interstate,Roadster,Hi Rider, Interpole, Fastback,"SS" 'S' Type, Fastback L.R. in the Tech Data Section gives theoretical road speeds for the various countershaft (gearbox) sprockets.
Check it out but don't go too tall with a standard bike or you will make it a dog.......woof woof
The Workshop manual for Models 850 & 750 Interstate,Roadster,Hi Rider, Interpole, Fastback,"SS" 'S' Type, Fastback L.R. in the Tech Data Section gives theoretical road speeds for the various countershaft (gearbox) sprockets.
Check it out but don't go too tall with a standard bike or you will make it a dog.......woof woof
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Hey Devildog you can check out this site http://www.oldbritts.com/o_ring.html if your going to change your sprocket. I have not had any experience with this mod but may be someone else here has and could comment.
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I've been running an o-ring chain for 3 years / 10,000+ miles. Have yet to adjust it. Lube it 3-4 times per season.
I machined my existing sprockets myself. Take .060" of either side of the tranny sprocket, .120 off of the outside of the wheel sprocket. Machining only one side of the wheel sprocket will better center the chain on the chain gaurd.
HTH,
Derek
I machined my existing sprockets myself. Take .060" of either side of the tranny sprocket, .120 off of the outside of the wheel sprocket. Machining only one side of the wheel sprocket will better center the chain on the chain gaurd.
HTH,
Derek
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