There was a thread on here earlier today with a link to someone else manufacturing ISO drilled cogs and modified shimano disk hubs. Can someone repost the link?
Why was that thread removed anyway? That pisses me off. I contributed a lot of information to that thread. What a waste. Is there some sort of conspiracy against bolting a cog to a disk hub?

I'm going to assume it was because the poster appeared to also be the owner of the web site that was selling the goods. Pretty sure that's a violation of some sort. I think Tomicog posted a similar thread when he put his site up and it was zapped too.

You would think at some point the information in the thread would justify its continued existence. Is is possible to repost the thread, but with the original post removed or transfer the content to another thread? At any rate, what was the link?

uh....maybe?

I'm not a mod so I can't really answer the first question. The web site was called London Fixed or something. I know the link showed up over on a fixed disc thread at the MTBR.com single speed forum round about when it showed up here.

https://www.londonfixiebike.co.uk is the link from the other thread.

thank you

Hi guys,

This is Max from londonfixiebike.

I (wrongly) posted the original topic under my previous username (Max F.). I asked admin to delete the topic as it was made known to me that it was against forum rules to post a link to your own website. I have also asked them to delete my 'Max F' registration so I can post on here as 'londonfixiebike' to hopefully offer any tech advice. (Apologies that contributors to that topic have seen their posts lost).

Phew! Hope that makes sense - just wishing to be upfront and honest.

You wont do well around here acting in that manner.

I think the hub price is reasonable. I like that. I also like the fact that they make both 3/32" and 1/8" sprockets.

I don't like the price of the sprockets.


Umm... why re-lubing the bearings with Finish Line teflon grease?

a little bit more economical hub, and can machine down the flange for zero dish 120mm hub
with +/- 42mm chainline.

https://www.universalcycles.com/shopp...ils.php?id=413

Hi,

Many thanks for the comments. We really have tried to make the cogs as well priced as we can - all the blurb is on the website but a lot of (old fashioned) machining goes into them, hobbed teeth, precision drilling, heat treating, plating and then individually laser etched (all in the expensive UK). I then hand polish each one. Being heat-treated EN36 cro-moly and reversible they should last for (tens?) of thousands of miles. Compared to EAI, Dura Ace, Surly etc price wise they are a lot of cog for the money but I guess I would say that!

Shimano are a bit mean with the grease - we like to top it up.

Deore is a cheaper option but the bearing quality is not the same as XT with Borazon treated races etc.

Hubs are an issue - this is a tiny business and we have to buy Shimano hubs at retail. The guys who make our cogs make many lovely CNC motorcycle hubs (they supply KTM with their factory team motorcross wheels) but to design and develop a specific double sided bicycle hub just for 110/120 road/track bikes would be a big investment (again in the UK not Taiwan) - just not sure the market or will to change from threaded hubs is out there?

^^^Right. I get what you're saying and I agree. Yes, I do think your sprockets are reasonably priced compared to an EAI track sprocket.





I just wish I could get them cheaper

Not likely for an item this specialized, unless Shimano starts selling predrilled BMX cogs for $5.

Props on the londonfixiewhatever site. Looks like you have everything covered ('cept 130mm spacing)

BTW I think this guy is in the process of eating it:

https://www.londonfixiebike.co.uk/pic...bmeertens1.jpg

Thanks for the comments. If spacing is 130 you could go with a MTB rear hub for a nice free/fixed flip/flop build - just means squeezing the dropouts apart a few mm which is fine on steel. This may not suit everyone's chainline set up though.

Or use the 120mm spaced hub and add another 5mm of spacers each side to give a 41mm chainline or 46mm with zero dish.

Not sure if that guy made it or not...

I built my own wheel already and wouldn't pay anyone else to do it for me... it was just a general remark. I guess I'm not the only one who rides a 130 road frame, and if the axle is long enough it's no big deal to offer 130 as well.

is that luke wilson?

I'm sick of my homemade crappy bolt-on cog! It's not perfectly round, so I want a new one on a new wheel i'm building.

I could make it myself, but the cost of a dx cog, drills, labour, etc. is higher then buying one from Tomicog or Londonfixiebike.

But here's the problem. Which one to choose? Can you guys give me some reviews? Both cogs look really nice and cost about the same. The tomi is 25 euro's, Fixiebike comes in at 22. Yeah i know, that's cheap. It's because there's a new 3 dollar coin:




I could buy both, but being a student and all I have to restrict myself and go for one.

Help me out! Please!

I think no one has used either of the 2 here, perhaps apart from some testing.

I've got 100 miles or so on a Tomicog. No problems. Just rode about 10 miles of the sloppiest singletrack ever with it. It is nice to "brake" without skidding in slop.

Aaargh! What the heck! I couldn't wait. Just bought a cog from londonfixiebike. I estimated that the north sea takes a little shorter to cross then the atlantic ocean. And it looked better... I'll keep you guys posted!

Yeah..it works. Theres not really much to add. There's really no reason to expect it to be as smooth or refined as something like an EAI $$ super cog. Not that my tomicog isn't smooth, but when riding offroad or in the slop, a super refined cog just isn't that important.

Riding twisty singletrack without ever touching a brake lever is a lot of fun...it brings a whole new meaning to the word "flow".

Hey,

I have a question. I am ETA 1 week from my own TomiCog fixie. I was at a bike store today chit-chatting with a mechanic there. He told me I ought to be careful because bolts come loose and strip my disk mount.

I thought the guy's story comes from the fact that he used disk brake mounting screws which are too short (5 X 10mm) with drilled 1/8 cog. So screws came out. So I bought some 5 X 15mm steel screws. I am just wanna know if anyone of you guys/girls heard about this.

Thanks,

T

P.S. What a heck up with disk brake screw prices? I got charged "520 Yen" for 6 of em. I went to a screw-specialist store and he gave me 6 of em for "63 Yen". Price go X8 when you put "fur disk-brakes" or something?

same here:
had the same problems as you drilling similar cog:


older, surface hardened cogs were much easier to drill:


Rear spacing, vertical dropouts, or chainline are not a problem, either if you are using 20mm through axle hubs