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Fixed with a singulator!

Bike tags: Fixed gear
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Shugun Spirit

Home made flat bar (very small ): ITM Tech Line 5"

Shogun straights

Quando

XO Flip-Flop

Shogun

Brooks vintage racing sadle

Shimano SPD

44:17

Equiped with a modified Power-Play singulator

People who friended this bike hovisbrown, jazzmaro, CONDENADO, bio9, mushroom, J Juicy, cannonhugodale, roadbikebreck

bad idea.

get an eno hub or roll it single speed. if you don't want to do that but you just HAVE to roll fixed. get a frame with horizontal dropouts (even diagonal drop outs). there's nothing cool about your stuff breaking because you used in a way in which they were not designed to be used. i'm not laughing with you on this one.

singulators

k, frist of all you should NEVERR put a singulator on a fixie. You kinda lucked out here, in that the spring really is not used at all and the singulator is acting more like a spacer, and less of what it is actally supossed to do. Singulators are made for single speed bikes with a free wheel not a fixed gear. They push down on the chain taking out slake using a spring but this only works one way. Witch is great if you have the abilty to coast, but if you try to stop, skid, back pedal, or even slow down with a fixie your chain will most likey derail. This is because the spring is pushing down taking out slake at the bottom but if u go the other way it will bring all your slake to the top. Since your pushing the singulator back, its no longer holding the chain down. There are other way to fix this problem with vertical dropouts, try half links, smaller chain rings, or bigger cogs. It really doesn't look like u really even need a singulator at all tho.

F+ see me after class

singulator=singleator
slake=slack
supossed=supposed
actally=actually
abilty=ability
u=you

i'm letting "NEVERR" slide.

you forgot...

you forgot witch=which

shit

tho=though

Nothing rhymes with orange

Kind of dirty. But I like it.

A buddy of mine has a really

A buddy of mine has a really nice TT bike done as a fix using an ENO hub. They're expensive but it seems to be the end-all-cure-all for vertical dropouts... and way sexier than the tensioner.

Tensioners on a fixed gear/ track bike

As long as the pivot/bearing/knuckle @ the pulley doesn't rotate along with the pulley then this should work. The spring in the tensioner only does it's job when the bike is being pedaled forward. Once you backpedal the O.D. of the pulley will be pushed up into the frame at which point the spring is no longer able to push down on the chain to keep tension. If the tensioner, hanger,and frame can handle constantly being pressed together and pulled around then this will work fine, if any of the three can't take it though you're asking for trouble. From the looks of it you don't even need the tensioner but if you want the chain really tight try a half link to get the tension right without the tensioner and you will have a much more solid set up.

p.s. in your second picture it looks like you might have a stiff link in the chain 3 links from the link that is on the cog.

Danger, Will Robinson!

Some folks (http://www.sheldonbrown.com/fixed-conversion.html) will tell you you're asking for trouble. A chain tensioner is not designed to handle the kind of forces that occur when you backpedal to brake on a fixed gear. If it does shear off on a particularly hard brake/skid, just hope that it flies outward, and not into your spokes. Spokes are definitely not designed to withstand a chunk of metal lodged between them and the chainstays, so a catastrophic wheel failure would likely occur.

Why do you need a chain tensioner?

unique setup!

Wow! I never knew you could run one of those spring-loaded tensioners on a fixed. How does that hold up when you try to skid or skip? I always thought that there might be too much chain tension that it might break the spring in the tensioner when you skid or backpedal.

Anyway, tell me about your bike, sweet setup if it works just like a fixed!

So far, so good...

The singulator seems to work just fine, I've put an extra round rubber mound on the arm which touches against the frame leaving about 3mm of movement in the chain. I tried a half link to add enough tension but it was still way too baggy and I like the set up, so am not about to change sprocket or chain wheel. I think as long as the singulator isn't traveling too far from sprung (down) to frame (up) then there won't be a huge amount of stress applied to the pivot. Also the rubber pad will touch the frame with more force than would be applied to the pivot, allowing the pivot to have primarily vertical motion without too much side-ways flex....
Im building my next bike at the moment.... It's a black 60's German racer.... and luckily will require no singulator! Has no one else ever tried this approach? Quite a few people have said I should file out a horizontal drop out... what! weaken the frame and have the back wheel come out from underneath me! no.... The singulator works (I'll keep you posted if i come off and die)...



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