In my limited experience with fixed gear setups I've only ever seen single cog + lockring to prevent slipping. What am I looking at here? I've never seen two cogs on the fixie side of a hub like this. Any wisdom would be greatly appreciated! Thank you.
by agnt_cooper
9 Comments
Yep. Janky lockring. Get a real one.
If you have two chainrings with a matching size difference, you can have two gears on that side, bringing the total to three when you flip the wheel over.
Isn’t this just a dingle speed? (Double single speed) It has two different sized gears
Remove one of the fixed cogs and put a proper lockring on it.
i think this is a [Surly Dingle](https://www.freewheelbike.com/product/surly-dingle-cog-157882-1.htm) (you can see the logo) that is missing the (required) lockring. it is supposed to be compatible with any standard fixed gear lockring, so you could try just installing one. doesn’t look like you have a lot of threads there so see how it goes. if those cogs have been recently installed they may just need to be mashed on a bit to thread themselves up the hub a bit.
I know it wouldn’t make much sense but I have to ask because I can’t see it in the pics: The side that has the freewheel doesn’t have the smaller lockring threads, does it?
I used to run a similar setup: two fixed on one side with a spacer between, but also a lockring, fir different steepness velodromes. And a ratchet on the other side.
This is a surly dingle which is a one-piece fixed cog with two different sprockets integrated into one piece. You can see it stamped/lasered in the face that it’s a 17/19, a 17 and a 19 tooth fixed cog.
This does NOT have a lock ring and is not safe to ride on this side. Looks like a freewheel thread on this side, so no step-down left-hand thread for a lock ring. There’s a handful of ways to bodge this together, but it’s your own risk so I won’t even get into it.
Assume this is a free/free flip-flop hub. The dingle is a cool piece, find a proper hub to run it on, and use this as freewheel/freewheel if you’re so inclined.
missing lockring, you also need to check, IIRC i think these also use a multi-speed chain instead of a track/fixed chain too.