Singlespeed & Fixed Gear - Where can I find a chain tensioner like this and whats it called? (Pics)

http://www.sheldonbrown.com/images/single-conv.gif
Where can I find it?
What type of chain tensioner is this called?
Will this be useful for a frame with no hanger?
Thanks!

Here's one, but it's not the same one pictured:

Kore Chain Reactor:
http://www.ebikestop.com/kore_chain_reactor_tensioner___silver-21025.php

You don't want to use that. I tried the Kore on my first SS MTB (2000 I think, before I found this place) and it never worked. Back then it was $50. They are designed for downhill applications. Not SS.

So what should I use for my single-speed road bike that doesn't have a deraileuer hanger?

Is the frame damaged? I think at that point an ENO hub or a magic gear are your only choices.

naw the frame isnt damaged...
http://www.sheldonbrown.com/images/dropf-nohang.gif
it's the one without the hanger, like this...

If you rummage enough, you'll be able to find a slide-in mount that will make a derailleur hanger appear where there once was none. It's how they mounted derailleurs on frames like that way back. Then you can just get a normal tensioner.

Or you could just get a bolt-on axle and turn it into a reggalar-ol' singlespeed. What's the situation where you need a tensioner even though you have semihorizontal dropouts?

If you rummage enough, you'll be able to find a slide-in mount that will make a derailleur hanger appear where there once was none. It's how they mounted derailleurs on frames like that way back. Then you can just get a normal tensioner.

Or you could just get a bolt-on axle and turn it into a reggalar-ol' singlespeed. What's the situation where you need a tensioner even though you have semihorizontal dropouts?

Well you see. There is too much slack still on my chain, and it can easily come off the chainring and freewheel if i hit a bump or something. but i can't remove another chainlink or else it'd be too short. so i guess a chain tensioner is the way to go.

half link, problem solved.

http://www.universalcycles.com/shopping/index.php?category=276

:) Hi, try a half link; That is what I did to be able to remove the tensioner on my tandem.

use a derailer

man i dont wanna pay shipping for just a half link. a half link should do the trick right?

Any decent bike shop should have a half link on hand for less than $2.

http://www.jensonusa.com/store/product/RD707Y01-Surly+Singleator.aspx

http://www.jensonusa.com/store/product/RD707Y01-Surly+Singleator.aspx
can't use that because i dont have a hanger slot for a deraileurer

If you have the above style of dropout then a half link is your best option.

Why do you need a tensioner if you have horizontal dropouts as you describe?

If you rummage enough, you'll be able to find a slide-in mount that will make a derailleur hanger appear where there once was none. It's how they mounted derailleurs on frames like that way back. Then you can just get a normal tensioner.


this...
http://ecx.images-amazon.com/images/I/417MR3D5DTL._SL500_AA280_.jpg

our co-op has probably 30 of these, plus another 40 on bikes, i'm SURE if you go to any bike shop or co-op in san fran, they have some stuffed somewhere.