Singlespeed & Fixed Gear - Vertical Dropouts

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532nm
10-18-12, 07:08 PM
Can I get chain tension within reason, using half-links?


Nagrom_
10-18-12, 07:09 PM
Fixed or single speed?

532nm
10-18-12, 07:16 PM
I'm open.


Bat56
10-18-12, 07:17 PM
With every combo? No.
With certain gear combos? Yes.
With specific gear combos? You don't even need the halfie.

Nagrom_
10-18-12, 07:22 PM
I don't advise vertical dropouts with fixed, after the first ride, and the chain stretches a little, too much play and its not enjoyable.

This wouldn't matter with SS as you don't need to backpedal.

JohnDThompson
10-18-12, 07:48 PM
Can I get chain tension within reason, using half-links?

It depends. Chainstay length and cog and chainring tooth count all figure into this. If you have a penchant for trigonometry you could probably come up with an algorithm to figure this out by plugging in the appropriate numbers, but AFAIK there's no pre-made solution to determine this.

532nm
10-18-12, 07:57 PM
Okay, I will try with singlespeed. Thanks.

Scrodzilla
10-18-12, 09:02 PM
Even if you do find a "magic ratio", tension will change as soon as your chain stretches. Unless you plan on getting a new chain every month, you may be up the creek.

RGNY
10-18-12, 09:35 PM
i have a "magic geared" singlespeed conversion. i love that particular bike in that configuration and keeping an eye on tension/stretch/replacement is worth it. just be aware of what you're getting into.

with singlespeed you can also run a tensioner.

jolly_ross
10-19-12, 05:45 AM
Derailleur hanger on frame?
If you're on a super tight budget you can cut up an old derailleur to act as a tensioner. Alternatively perhaps something like a Surly singleator.
If you don't like either of these alternatives as they muck up the clean SS chainline then these chainstay rollers are a bit more subtle:
http://ecx.images-amazon.com/images/I/31fpgRP7oRL._SL500_AA300_.jpg