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Single Fixed or Double Fixed: What's the difference?

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Hello! Im looking to by some Phil Wood High Flange Hubs and theres an option between Single or Double Fixed. Whats the difference?
     
August 15, 2013 03:13 AM
CJZ
From: Los Angeles
5 posts
2 bikes
double is threaded on both sides so that you can have 2 cogs on the same hub. all you have to do is flip the wheel to get a different ratio. if your cogs are close enough in size, and you size your chain properly, you can often have two different ratios, that will work without shortening or lengthening your chain. if you have a directional tire, you may want to switch that when flipping ratios
     
August 15, 2013 03:21 AM
Zeb_pepperoni
From: San Diego, CA
780 posts
9 bikes
All you need to do is look at a picture of the hubs to see the difference. How obvious does it need to be?
     
August 16, 2013 12:08 AM
Scrodzilla
From: South of Heaven
1005 posts
2 bikes
^ +1
     
August 21, 2013 11:44 PM
Rzjarvis93
From: Texarkana/Arkadelphia, AR
127 posts
3 bikes
Well its common sense.. double fixed = 2fixed cogs..
Single fixed = 1fixed cog and a freewhell, or just one fixed threading.
Cmon...
     
August 21, 2013 11:54 PM
G0DLiK3_T3DDY
From: San Fernando, Ca
89 posts
3 bikes
Close.

A [b]single-sided[/b] fixed hub is only threaded for a fixed cog/lockring on [b]ONE SIDE[/b].

A [b]flip-flop[/b] track hub will either have threads for a fixed cog/lockring on [b]BOTH SIDES[/b] or threads for a fixed cog/lockring on one and a freewheel on the other.

It is possible to run a freewheel on any fixed threads but you cannot safely install a fixed cog on freewheel threads (even though it will go on) because there are no separate threads to secure it with a lockring.
     
August 22, 2013 12:14 AM
Scrodzilla
From: South of Heaven
1005 posts
2 bikes
I knew that sounded weird. Flip flop. I forgot. Lol
     
August 22, 2013 01:36 AM
G0DLiK3_T3DDY
From: San Fernando, Ca
89 posts
3 bikes
Hang on. There's one more type of hub. On one side there is the normal size thread for conventional free wheels. And on the other side it has a tread with a smaller diameter so you can use 15 tooth and smaller freewheels. Also referred to has a 'flip flop hub'. From the early eighties, maybe earlier?
     
August 23, 2013 05:09 AM
AKfromGC
From: Gold Coast. Australia
179 posts
2 bikes
Read the original post. Unless Phil Wood started making BMX hubs, we're talking about track hubs here.
     
August 23, 2013 11:36 AM
Scrodzilla
From: South of Heaven
1005 posts
2 bikes
Surly manufactures a double fixed cog. So if you had a fixed fixed hub u could potentially run 4 fixed gears individually.

http://www.charliethebikemonger.com/sur...
     
August 23, 2013 02:37 PM
fixed_culture
From: washington dc - South
23 posts
0 bikes
Looks like that thing would throw off your chain path.
     
August 23, 2013 05:54 PM
It's not anything to worry about or it wouldn't exist. A chainline being off by a few mm never killed anyone. Ask anyone who rides a bike with gears.
     
August 23, 2013 06:12 PM
Scrodzilla
From: South of Heaven
1005 posts
2 bikes
hahahahahahaha^^^ exactly! sometimes you just gotta run 53-26. never go in the little ring. ever.
     
August 24, 2013 03:56 AM
Zeb_pepperoni
From: San Diego, CA
780 posts
9 bikes

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