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PostPosted: Thu Mar 08, 2012 6:05 pm 
Dirt Disciple

Joined: Mon May 09, 2011 9:16 am
Posts: 12
Looking for a Shimano 600 chainset and crank with a lower chainring of around 32t. I currently have one but the lower ring is 40t. Its a bit to much hard work.

Thanks.


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PostPosted: Thu Mar 08, 2012 7:32 pm 
Road Moderator
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Unless they made a triple (quite sure they didn't) then the lowest ring you're going to get is 38t.


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PostPosted: Thu Mar 08, 2012 9:16 pm 
Dirt Disciple

Joined: Mon May 09, 2011 9:16 am
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Did'nt know that. Might have to replace with something else then.


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PostPosted: Thu Mar 15, 2012 1:59 pm 
Retro Guru

Joined: Mon Jan 15, 2007 12:12 am
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Location: Gold Coast Australia
most "compact " chainsets are 34/50 rings , but compacts did not exist in shimano 600 era . If you currently have a double chainset with square taper axle you will have to get a new(external bearing) BB to go with the chainset , A lot of people get rear cogs with huge teeth no to acheive the lower gearing you want.


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PostPosted: Thu Mar 15, 2012 5:49 pm 
Retro Guru

Joined: Wed Dec 10, 2008 9:19 am
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Location: Sheffield, top city
latman wrote:
most "compact " chainsets are 34/50 rings , but compacts did not exist in shimano 600 era . If you currently have a double chainset with square taper axle you will have to get a new(external bearing) BB to go with the chainset , A lot of people get rear cogs with huge teeth no to acheive the lower gearing you want.
nope, stronglight make square taper compacts


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PostPosted: Thu Mar 15, 2012 7:48 pm 
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Or you could use an old deore set up as a double.


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PostPosted: Thu Mar 15, 2012 8:05 pm 
Retro Guru

Joined: Wed Nov 02, 2011 11:29 pm
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Location: Sheffield
SR did a double Super Custom in 86BCD in the 80s. Otherwise the same design as the 144BCD (odd that they went for the two extremes) --- see http://velobase.com/ViewComponent.aspx? ... AbsPos=163
Not as nice as a 600, I know, but not a bad chainset and maybe the right kind of period for you. I have the 86BCD one with 32 and 47 rings on it (and would be willing to part with it were it not for the fact that my sister is currently using it...)
Nick


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PostPosted: Thu Mar 15, 2012 8:11 pm 
Retro Guru

Joined: Wed Nov 02, 2011 11:29 pm
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Location: Sheffield
Actually, Hilary Stone has a 70s 600 with 95BCD --- see bottom item at
http://hilarystone.com/cranksets2.html. Might be hard to find rings for that, whereas 86BCD are easy.
There is also a 86BCD Stronglight 80 for £39 on there, and he says he can provide a selection of rings.
Nick


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PostPosted: Thu Mar 15, 2012 9:09 pm 
rider | rBoTM Winner
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A square taper MTB chainset without the third inner granny ring is the same as a compact. Deore, XT etc. would all do the job.


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PostPosted: Sun Mar 18, 2012 5:25 pm 
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Old Ned wrote:
A square taper MTB chainset without the third inner granny ring is the same as a compact. Deore, XT etc. would all do the job.


good plan, you could then run something like 34/50


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