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Author Topic: gearing and tire size ?  (Read 1137 times)

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Offline 78 k550

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gearing and tire size ?
« on: January 10, 2006, 09:22:22 PM »
Hey All,
 Looking to put the 77 550F rear tire and rim on and noticed it has a 37 tooth sprocket. My 72 500 and spare rim have a 34 tooth sprocket. I rode by the dealer today and they looked it up and said that was stock for both. He said they put the 37 on the F's so they would be a little quicker. I have an old 4.60H on the rear of my 72 500 my 78 550 has a 120/90/18 and 34 sprocket. It seams to be good. I have a 110/90/18 new spare now. I can put it on or go with a 120/90/18 and the 37 tooth sprocket? :)  man what to do? what to do? :)
 Thank's for the input.

Paul
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Paul
Littleton, CO

76/77 CB 750F, 
75 GL1000, (AKA GL1-242 NGWClub),
76 GL1000 LTD
84 GL1200 Standard
6 Bultaco's= 42, 49, 121, 152, 167, 188

Offline TwoTired

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Re: gearing and tire size ?
« Reply #1 on: January 10, 2006, 10:40:57 PM »
According to the Honda shop manual, the 34/37 sprocket change coincided with the 500 to 550 model change (Ks and Fs).

The final drive of the transmission also changed from 2.000 to 2.176 between 500 and 550 also.
Cheers,
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Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.
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