Yup, DonP. But don't make my achievement seem smaller!!!

BTW, that's a sort of answer to Re-Cycle's musings. If it's a Shimano, it's easy to find a threaded axle for it. Other disk hubs usually have cartridge bearings and funny axles. I'd stick to threaded axle for fear of cracking a hollow QR axle by spacing it up from 100 to 130.

while it is not a front hub, and I'm not sure you could space it properly to a track frame, you could get a single speed disc rear hub, then you could throw your cog on the disc side, and a freewheel on the other. although I'm not sure that there is any practical use for this...

www.endlessbikes.com has the leg-breaker cog, but you'd probably have to call and ask for it special-like. I think Spicer sells one too.

That would be perfect for frames that are 135mm spacing. Pretty useless for anything else though.

I checked both places, spicer makes an adapter to use chainrings in the rear and while endless bikes may make what we'r looking for I didn't see it. My Redline Monocog is hurtin to be fixed, especially since I snaped one of the rear brake post bolts this weekend.

i don't think it's on their website, but i've heard rumours that if you get gene on the phone, he'll drill a bmx cog for you. that was awhile ago though...

good to see you guys did it if anyone else is interested also se the jugi hub conversion on fgg

thanks for the update

ya know i recently plunked down for the uber-expensive level hub and frankly i think yours is a cleaner/nicer/lighter solution to the problem of thread on cogs!

the level hub is nice and it spins ofrever but with only three bolts holding the cog on i notice i have to keep tightening the torx bolts on it after every 2-3 rides. i recently regreased them heavily and the problem has lessened but i bet if i had 6 bolts as opposed to 3 it would never happen.

plus level is not making 1/8" cogs for the hubs (contrary to what the website may say).

i have nothing against the level but it seems really expsensive for what it does and i bet yours does all that just as well while wieghing less and costing a fraction as much.

good for you! i don't understand why some manufacturer (surly? kogswell? phil?) doesn't hop on this ides and make a hub and some cogs to work using this principle. seems infinitely superior to thread on cogs to me.

same reason level hasn't blown up, fear of the new...

Congrats! Mine is in the works, using soul-kozak front hub - this will go on my winter bike.

you could make some money making a conversion kit....

https://www.endlessbikes.com/products...nts/index.html

Like I said, you'd probably have to call and ask for it. I don't think it's a production thing right now.

I got two 1/8" cogs on my Level hub! They exist...

There's a good couple of people who want a bolt-on fixed wheel here in Hungary, so it seems we'll do a group drill thing. The father of a forum member has a big machine shop so it'll be cheap and professionally done.

I may or may not be able to slip a few cogs in for anyone who is interested. So, if you want an ISO cog, drop me a PM or post here. I think I'll only do one shipment even if there are several interested US peeps so you'll have to distribute them among yourselves.
Cogs are likely to be Shimano DX or any SS cassette cogs we can find. Supply is unreliable to say the least, so the plan may fail completely. Also, the machine shop man may only be willing to do two or three... for us personally.

The whole thing is far from a done deal and we'd still need to look into shipping costs, customs (?) and such. (I'm not sure if we should use the good ol' postal service. Around here, I hear they have a habit of "damaging" and "losing" interesting-looking packages. A bunch of cogs isn't that hot but they aren't too bright so God knows what they will make of the box. UPS or other shipping firms are safer.) You could more than likely paypal me (a friend of mine, actually) the price of the cogs. This is really just a preliminary inquiry to se if there's interest. Price would almost certainly be under $10 apiece, plus the shipping cost.

I've been running this set up on and off for over a year now. I started out with a drilled out DX cog, but have since switched over to Boone's. I've drilled out a few more for some friends of mine but they take a bit of time to get them right ...probably close to an hour for each. If in fact you are able to get cogs made for $10 that is a freaking steal! DX cogs are $5 to start and the bits I was using were also in the $5 range, but I would use several different ones increasing the size. Plus you add in the labor to not only drill but also hog out the inside so it clears the hub. I'll send you a PM.

i apologize for the lack of product available to the masses while we go through our move across the country. i assure you 1/8" cogs are available. perhaps the BTI site is a little misleading. they have chosen to only carry the 3/32" cogs. small company, ya know. as soon as our product makes its way to our new location we will be able to sell directly to the end user. good news for all those interested i hope.

we are available to answer any questions or concerns you may have concerning anything fixed. our email and phone numbers are at the bottom of every page on our website (which is due for a major upgrade, -ps.)

here's one answer: use blue loctite (243) on your cog bolts. it keeps them from loosening up from the slight back and forth motion of the cog. this goes for both LeVeL hubs and disc convert hubs.

also, the three bolts on the LeVeL dont take any of the drive force. the knuckles do that.

Well, all my 6 bolts got was a bit of grease and a lot of torque. No loosening so far. 6>3

BTW, it's nice to have one more of the "industry" guys on here.

We do make the kogs. And we use them on 135mm hubs. They're splined to fit on a Shimano-type FH body as well. If I say any more, I'll get dinged for advertising.

Respacing a front hub isn't a big deal, right?


Kogswell Disc Mount Kogs - 16 & 18T - beefy 3/32"









the fork is the frame

Thats sick man. The cats @ naked bikes built a nice fixie with a front disc. Sweet @ss bike. It also had a hole in the top tube to thread a U-lock. Bike porn if there ever was.

Don't know if it was mentioned, but you can get a Boone bolt on cog to fit disc mounts. Looks good to me.

the level hubs bolts only hold the cog to the knuckles, they don't really take any torque.

quit pissing on his parade already

hey, can I live?

Dude, the whole issue started off with max-a-mill posting that he has a level and the bolts keep loosening on every ride. (Edit: ok, that's an exaggeration) Mine have never loosened yet. Admittedly, I'm light and have only ridden a couple of hundred K on it yet.
Anyway, those are the facts and you can repeat any number of times that the knuckles take all the torque, it won't become true. The bolts have to take some stress and 3 can't always cope with it. The knuckles do allow the cog to move a very slight amount, which is of course enough to **** with the bolts. Level said that too in the previous post and it's pretty pointless to argue with.
In order to make the knuckles bear 100% of the stress, you'd have to make them to mindblowing and totally impractical tolerances. Probably negative tolerances if you ask me. Really, you'd have to make it a press fit like square taper cranks in order to relieve the bolts from all stress.
6>3. Can't argue wit that, can you?


Edit: of course, you can loctite the bolts but that sort of destroys half the fun. Goodbye on-the-trail installation and cog switching with a multitool. I don't know why level spec a torx bolt, BTW...
Again, maybe you just have to be more of a gorilla when tightening the bolts and make sure you grease them well. Only level users know.

jebus, i never said your method sucks, lighten up. all I said was that their design does not rely on the bolts, yes they will take some stress, because as you said, tolerances. yes here's your pat on the back for drilling six holes... Sorry jr. next time I won't upset you with anything that you don't already know.