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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 07-19-09, 07:03 PM   #1
flats
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A basic questions about single speeds

I'm looking at getting a KHS solo one, and I know I want to immediately change the gearing.

What is the best way to get approximately 60 gear inches? Keep the 32T ring, keep the 20T cog, or switch them both?
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Old 07-19-09, 07:13 PM   #2
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http://www.sheldonbrown.com/gears/

if you change the cog or chainring, go larger rather than smaller to achieve your desired GI. (i.e. 48x19 vs 43x17). larger = less wear.

some will also recommend going all even, but this doesnt seem all that necessary.

if you plan on riding brakeless, figure out skid patches as well -- more patches, the better.
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Old 07-19-09, 07:18 PM   #3
j3ffr3y
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60gear inches is quite low. for most areas ~70 is recommended.
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Old 07-19-09, 07:45 PM   #4
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Did you guys even look at the damn bike?
It's a 29'er SS.
Made for trails. Not the street.
I'd either keep the 32t and put on a 15t or 16t cog.

Other wise, I'd get these:
Surly 36t chainring 104bcd
Polycarb bash gaurd
Some 17t freewheel

Polycarb bashgaurds look so fly, I'd get one in either case.
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Old 07-19-09, 07:52 PM   #5
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33T on front, 16T on rear.
Salsa bashgard.

Remember lower gear inches on offroad means more low end power. If you're track/riding area/deer path has long straight aways, you'll just have to spin a bit (I spin out regularly at 20 mph on flats) but it pays off having the extra power on steep climbs.

Our trails have multiple 4-6' climbs at 45 degrees or greater, some are sloopish so they've got a 45 degree climb on a 20+ degree camber.
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Old 07-19-09, 08:12 PM   #6
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Thanks for the replies. 36-17 would be ideal for me, but that would involve switching both the ring and the cog.

If I were to buy a 36T ring and 17T cog, do I just swap them out? Or do I need a new crank? And a new chain? Basically, will the cost of the new ring and cog be the final cost?

Also will 60ish gear inches feel the same regardless of how it is made up?

You can probably tell I'm new to single speed. Thanks.
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Old 07-19-09, 08:29 PM   #7
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You'll be fine with that crankset, it's a perfectly good 4 bolt 104bcd crank.
You will however, need a new chain. It's good practice to replace the chain when replacing cogs or chainrings, and most times required.


And yes, the gear inches will feel the same no matter how you make it up.

Looks like a fun bike, enjoy it regardless!
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