TuscanySwe

Hi

Hopefully im building a new bike thats gonna double as a fixie and a 1 x 5 speed with spacers on a shimano body for 10speed cassette during the winter.

My question is this:

Will the 3/32 width chainring on the trackcranks work with a 10 speed shimano chain or is there any other chain that will fit the 10speed rear derailleur and cogs together with the trackcranks?

I have not found any info about how wide the 10 speed chain is on the inside, alltho i have heard rumour of it beeing 5/64 (2.5/32) wich is .5 less wide than the chainring on the trackcranks. Will this make the chain sit on top of the chainring instead of on it? If so is that a big deal?

I got an ultegra crank that could be used but i really want the trackcranks on there so i can just shift wheels and be "fixed" instead of messing with bottombrackets and such. spend enough time with/on the bikes as it is

Any other ideas to get a 5 gear setup on a 10 speed shimano body used together with 3/32 width trackcranks?

Thx

Nekura

What length cranks? You need to be worrying about pedal strike.

fordfasterr

10spd chains stretch ever so quickly.

I hope you have lots of spares !!!

TuscanySwe

Can u pls awnser the question instead!

the 10 speed chain is used with the winter setup of 1 x 5 gears on the 10speed body, why would it stretch more than if it was on a road crankset?

when i change set up to fixed ill be using a trackchain with that wheel.

will be a very nice bike to me with these setups, if its possible to do??

TuscanySwe

u mean when im fixed? havent even bought the cranks yet but im thinking 170..

What i want is to run a trackcrank with a fixed wheel during summer but thats not a problem..

the problem is that i also want to run a 1x5 gear setup in the winter on a different wheelset on the same cranks, using a 10 speed rd and 10speed shimano body wheel, problem (if any?) beeing finding a chain that will work with this configuration

thx

Chances

Your rear fixed wheel will have a cog on it that isn't a compatible size with the ten speed chain, so I'm guessing you will buy two chains, one for your fixed gear setup, and one for your 1x5 speed setup. If you take a chainring off of your Ultegra crank, it will work fine with your fixed gear setup, and with your shifting setup. If you buy 'trackcranks', you can put a regular road chainring on them and still get the same result.

The direct answer to your question? The ten speed chain will -not- work with your track chainring width.

It will not sit on top of the chainring, instead it will rock from side to side and fall off. When the chain sits correctly in the teeth of the chainring, it cannot rock from side to side.

TuscanySwe

aha.

good awnser, nice info. unfortunetly its bad news to me! if u are sure of this? This means i need to worrie about getting a trackcrank with same bcd as supplied 10 speed chainrings. And even when i got that i will need to take off cranks everytime i change to the other setup in order to fit new chainring. Not taking of cranks but still geared and fixed setups on the same bike was the plan, hmmm

no other chain u guys know of will fit the description? Narrow enough to fit 10speed rd and cogs but the inside wide enough to accomodate for trackcranks?

Should have guessed, it sounded too sweet!

TuscanySwe

ah yes u are right bout this (using ultegra cranks with 1 chainring for both setups) but i also kind of like the look of a clean trackcrank.. especially since its on a kinda highend bike i feel i owe it the frame to have nice components

jrockway

Why are you converting an expensive road bike to a fixed gear bike? Riding single speed or fixed gear is just a hack to save money. Get a $100 steel frame, throw on some cheap components, get a perfectly useful (and fun) bike.

Expensive road bikes are meant to have gears... that's why they're expensive. A lot of the expense *is* the gears (components), the rest is making it lighter so you can use those gears to accelerate faster.

Anyway, have you read Sheldon Brown's site on converting bikes to fixed gear? He talks about chains:

https://www.sheldonbrown.com/fixed.html

operator

100% incorrect

3/32 chainring on a "track crank" will work with his "10-speed" chain. Since we don't know what his fixed rear wheel setup is going to be like, there's no way you can state that it isn't going to be compatible with his track cog.

Track cogs come in both 3/32 and 1/8, so obviously he needs the former for compatibility.

Wrong. He already stated in the second line of his post that it's going to be 3/32 chainring width.

Wrong. Just because the chain shifts from side to side doesn't mean it's going to "fall off". Maybe the 1/8 chain on 3/32 rings/cog guys on the fixie forum need to be told about this. Clearly it should fall off.

operator

Get a 3/32 chainring for your "trackcranks" which, apparently you have already stated in post #1. And a 3/32 rear cog for your fixed wheel.

operator

Maybe you want to actually link him to the sheldon article which is actually relevant to this post:

https://www.sheldonbrown.com/speeds.html

Section: Chainrings/Chains

Nekura

I don't know if your english is hurting us helping you, but this just sounds like an all around bad idea.

- If you want to run fixed for the winter, or whenever, you're going to want 165 length cranks, especially depending on the bottom bracket drop of your frame. This is a safety issue.

- Track wheels have 120 spacing, your frame has 130. You're going to need to ghetto rig a fixed wheel and your chainline is going to be another problem. The Surly fixer might be an option for you, though.

- And if your chain is a concern -- you are still going to have to break it and take out a ton of links for your fixed setup.

Bottom line is this is a bad idea. If you want a winter fixie build. Build one. Are you really wanting to take off your derailleurs, leave exposed shifter cables on the bike? I'm not sure you've thought this through 100%.

TuscanySwe

its a cyclocross frame so bb should be high enough to use with 170mm arms.
hub is ENO 130 wide so will be no problem with rear spacing of the frame.