wiston

Ok, still not closer to the answer...

merziac

Well then, JB WELD.

Then it will never come off.

wiston

Fine, but what is wrong about lock ring? The metal itself is solid enough. Maybe the screw-thread is a weak spot?

Munny

There was a time, here in Belgium, when lock rings were prohibited on track.

I don't know if it's still the case and anyway I was thinking that fixie were nowhopefully has been with many of the guys having problems with their knees.
No track nearby?

cudak888 

If you're willing to run without a coaster brake, there is the option of using a disc brake hub and a fixed cog designed to bolt directly to it. Absolutely durable and a cheap combo too.

https://www.amazon.com/Fixed-Bicycle.../dp/B074QMNYDG

-Kurt

clubman 

Well, single speed hub can be freewheel, fixed, or coaster and coasters/freewheels are not a 'fixed wheel'. (fixie is so 2010 don't you think? )

Having a plan B to slow your bike down is never uncool.

merziac

Maybe, if you must go down this road, get a bullitproof wheel built by the guru's and save the very cool one that is on there before it is permanently damaged and screws up that beautiful frame.

3alarmer 

...every modern track frame I've encountered here in the US was spaced at 120mm in the rear.

wiston

Of course I don't want to ruin that bike in any way. If I would go with new rear hub, I would buy new rim. Dont want to damage this beautiful wheels with nice string joins.
Keeping that in mind I still want to ride this bike just because I like it and I am not track enthusiast at all So I need to adjust (without any destructive changes) it somehow or sell it.

merziac

I get it and like I said, if you must, seek out the gurus who fix this problem and make it so.

Or just box it up and send it to me, I have a couple of fixies just sitting here I would be happy to trade.

BFisher

Shimano CB-E110 is a nice coaster brake hub. I think they may be wider than 120, though. Worth looking into.

Where are you located, @wiston? Fichtel & Sachs made some nice rear hubs if you want to search for something vintage. I have a Duomatic that is a coaster brake and two speed kickback. It is fantastic. They came in 28 hole and 36 hole variations. The 36, which is what I have, can be hard to find - at least in the US.

alcjphil

That is a tubular tire, not tubeless, although Tufo makes tubular tires that do not have inner tubes, most tubular tires have inner tubes sewn inside the outside casing of the tire

Mr. Spadoni 

On the track, a lock ring really doesn’t do that much. One or two hard accelerations, and the cog is on tight enough that you will have to lock up the rear wheel to break the cog loose. If you have to slow down that fast in a track race, well, you have already crashed.

icemilkcoffee 

no, not good enough. Take a look at a purpose built Fixie hub:

Notice that there are two different diameter threads on there. The cog goes on the inner CW thread. The outer thread is CCW. The lock ring goes here.
When you pedal forward the cog will self tighten. When you backpedal the lock ring will self tighten.

repechage

Your easiest path is to get a bottom bracket adjustable cup lock ring. it has the same RH threading as the hub, probably 1.370 x 24 tpi, tighten the cog well, and tighten the bottom bracket lock ring against it.
BUT, that is a poor choice for skid stopping, I think using a tubular tire (glued on type as mentioned) is silly, any skid stops will wear to the casing very quickly.

Way back, we rode the track without lockrings. Made for faster cog changes. About 1975, the officials were issued orders to inspect bikes for lock rings before events. Prior to that, no problem.
It is now a UCI thing for track racing. Everyone lives with the rules.

A true lock ring is slightly smaller thread diameter than the cog and has reverse lefthand threading. There are essentially three standards, the French, Campagnolo, and everyone else.
Just looked on ebay and there are plenty of coaster brake hubs in chrome to be found, in 36 spoke count. For a street use, want to skid wheel, get a clincher rim, the tires can be found in many tread weights.

fietsbob

Importing from Japan you may find a a front brake mount that bolts onto track bikes .. Keirin racers train on their race bikes on the streets
and add a front brake they remove when back in the velodrome..

St33lWh33ls

VELOSTEEL


https://lovelybike.blogspot.com/2012/...brake-hub.html

wiston

So this is how the bike looks like today. I’ve got two old tires. Front one is tubular type and the rear is classic one with inner tube. The rear tire also has coaster brake installed and I only need to install front brake now

DiabloScott

Filing this away for posterity - I love that name for tubulars. Google doesn't have it but the Czech Tufo site does.

geeteeiii

I wouldnt add a front brake, it looks nice and clean without one. Im suprised that not alot of single speeds dont use coaster brakes, makes for a clean and silent setup.

merziac

Well there you go, done!

I would insulate the chainstay from that coaster brake arm clamp with something though, especially if you are going to be doing skid stops, maybe thinwall clear tubing so as not to mar the chainstay.

bwilli88 

That SRAM is not a kick back, it is a centrifugal change hub, when the wheel gets to a specific rotational speed it shifts.

IAmSam

SS Coaster Brake was always the best way to fit your desires...looks good

cudak888 

My bad. Thanks!

-Kurt

wiston

I am just worried about the coaster brake longevity? I am 87kg so it tooks lot of force to stop the bike.