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Under-geared F1?

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StealthDJ:

--- Quote from: Skoti on June 27, 2022, 09:14:41 PM ---Previous owner fitted a smaller rear sprocket to my 1976 F1, it pulls 60mph @ 3500rpm.
It's nice and relaxed and pulls top gear fine when two up touring loaded with camping gear etc.

So yes I can recommend a smaller rear sprocket.
Hope this helps.

(Photo taken on route to Honda4Fest earlier this month)


   

--- End quote ---

Good to know, thanks - any idea what size sprockets / number of chain links are on it?

Skoti:
I think the chain has 98 rollers, but will double check today and
I'll also count the rear sprocket teeth.

Skoti:
Hi,

Just checked my F1 gearing for you.

Rear sprocket - 43t

Rear chain - 98 rollers (49 links)

Also I'm sure the front sprocket is still the standard size.


Hope this helps

Skoti

StealthDJ:

--- Quote from: Skoti on June 28, 2022, 10:17:47 AM ---Hi,

Just checked my F1 gearing for you.

Rear sprocket - 43t

Rear chain - 98 rollers (49 links)

Also I'm sure the front sprocket is still the standard size.


Hope this helps

Skoti

--- End quote ---

Thanks for checking - that's definitely quite a jump from the standard 48 rear sprocket and more than I'd have considered going otherwise.  I'll have to get the calculator out and figure out the ratios...  :)

Skoti:
Hi,

Just been out on my F1 to a classic bike and cafe racer meeting for a look around.


And I've a confession to make because my earlier statement about gearing was bollocks.

 "Previous owner fitted a smaller rear sprocket to my 1976 F1, it pulls 60mph @ 3500rpm".

Today I doubled checked and it actually pulls 55mph @ 3500rpm, so sorry if I misled anyone...

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