FG Cog Question
09-01-08 | 06:24 AM
#1
Thread Starter
*meow*
Joined: Aug 2008
Posts: 126
Likes: 0
From: Jersey City, NJ
FG Cog Question
I am currently running a BMX style freewheel on the stock rear wheel. I am interested in going fixed, but I don't want to spend a lot of money on a new track frame. What kind of options do I have for threading a cog onto the stock hub? I have seen products like this \/\/\/
Is this a viable option? Or am I really off base here. I know I would need to space it out to have a good chain line.
Is this a viable option? Or am I really off base here. I know I would need to space it out to have a good chain line.
09-01-08 | 07:47 AM
#2
You'll have issues with the chainline
You can't just "space it out". And you'll have no proper lockring.
Suggest you get a purpose built wheel.
And read up about Fixed Gear at Sheldons site.
You can't just "space it out". And you'll have no proper lockring.
Suggest you get a purpose built wheel.
And read up about Fixed Gear at Sheldons site.
__________________
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
This is Africa, 1943. War spits out its violence overhead and the sandy graveyard swallows it up. Her name is King Nine, B-25, medium bomber, Twelfth Air Force. On a hot, still morning she took off from Tunisia to bomb the southern tip of Italy. An errant piece of flak tore a hole in a wing tank and, like a wounded bird, this is where she landed, not to return on this day, or any other day.
09-01-08 | 12:10 PM
#5
some new kind of kick
Joined: May 2007
Posts: 1,542
Likes: 1
From: Smog Valley
Bikes: SOMA Rush, Miyata 912, Kogswell Mod. G, want a porteur bike
lots of fixed wheel sets around-- SOMA has one,
do a little googling. What you will get for anything
less than a good chunk of change is a formula hub
or something comparable, probably rebranded by whoever
is selling them, laced to decent but not great rims
do a little googling. What you will get for anything
less than a good chunk of change is a formula hub
or something comparable, probably rebranded by whoever
is selling them, laced to decent but not great rims
09-02-08 | 06:55 AM
#7
cab horn
Joined: Jun 2004
Posts: 28,353
Likes: 30
From: Toronto
Bikes: 1987 Bianchi Campione
There is no mixed opinion. Its not called suicide hub because it's safe. Especially if you don't run any brakes.
09-02-08 | 11:32 AM
#8
Aphoticism.
Joined: Mar 2008
Posts: 53
Likes: 0
If you make sure that cog is on there using automotive engine grade locktite, you'll be okay. Once you thread the cog on and use the appropriate adhesive let it dry, and then use a bottom bracket lock ring as another form of "insurance" it'll be bomb proof.
Using a free wheel type of hub is okay for fixed gear, you just need to know how to make it so things won't come apart on you. I know plenty of old timers who did just that for years.
09-02-08 | 01:23 PM
#9
yo yo yo yo yo
Joined: Nov 2005
Posts: 2,518
Likes: 0
From: delaware
09-02-08 | 02:27 PM
#10
Senior Member
Joined: Apr 2004
Posts: 6,357
Likes: 167
From: Sacramento CA
Bikes: Too Many
Just get a cog that has the same number of teeth as your freewheel and thread it on. A track hub has a smaller set of reverse threads to hold a lockring. The lock ring keeps your cog from spinning off when you apply back-pressure.
If you just want to try fixed, just pull off your freewheel and thread on a cog. Just keep on your brakes.
If you just want to try fixed, just pull off your freewheel and thread on a cog. Just keep on your brakes.
__________________
I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
09-03-08 | 12:48 AM
#11
CrossFixed
Joined: Sep 2008
Posts: 74
Likes: 0
From: Bend, Oregon
Bikes: REDLINE MonoCog SS, Motobecane Fantom Cross Uno, IRO custom fixie
Is your bike by any chance disc brake compatible?
Because if you have a disc mounting bracket on your rear hub, you can bolt a fixed cog onto it, and then you don't have to worry about lockrings, loctite, suicide hubs, etc.
If you can find one that has that option, pick it up.
REDLINE makes freewheel single speed hubs that are disc compatible, and https://www.londonfixiebike.co.uk/ sells some pre-drilled and super sweet cogs.
Or you can just get a cheap one and drill it yourself.
I'd recommend 16 teeth or more, as the smaller ones don't have the surface area for drilling.
Because if you have a disc mounting bracket on your rear hub, you can bolt a fixed cog onto it, and then you don't have to worry about lockrings, loctite, suicide hubs, etc.
If you can find one that has that option, pick it up.
REDLINE makes freewheel single speed hubs that are disc compatible, and https://www.londonfixiebike.co.uk/ sells some pre-drilled and super sweet cogs.
Or you can just get a cheap one and drill it yourself.
I'd recommend 16 teeth or more, as the smaller ones don't have the surface area for drilling.
09-03-08 | 12:59 AM
#12
Bicycle Repair Man !!!
Joined: Sep 2007
Posts: 27,266
Likes: 150
From: YEG
Bikes: See my sig...
I have a suicide hub on two of my conversions (and one of those is a flip flop), built a fixed wheel set for my touring bike, and my vintage road bike came with a fixed hub.
A suicide hub is okay of you build it up right and use a brake...to many people fail at the building it right and running a brake part which is suicidal.
Running a purpose built wheel is the best way to go.
