For Sale Custom Single Speed Chainrings, Cogs, And Tensioners

So i figured i'd just consolidate all my stuff into one thread to make it easier for everyone.
I'm producing and selling titanium, aluminum, and stainless chainrings and cogs, along with lightweight tensioners for horizontal dropouts.

Chainrings
These single speed or downhill specific chainrings are made out of 7075-T6 Aluminum, 316 stainless, or 6al-4v titanium and completely CNC machined for accuracy. I can make any size that is physically possible, for any type of crank. They feature a lightweight and easy to clean design, taller teeth for less chance of dropping your chain, and they are reversible, so once you wear out one side, just flip it over to double your life. They can come polished, or anodized in many different colors. These are made to order, so there's a very short lead time, usually less than a week. I can also do custom engraving or patterns for an extra charge. Prices start at $35 each, pm me for a more specific price for your application.
This is my prototype ring for a Shimano XTR m960 crankset (102BCD).


Cogs
These cogs are going to be offered in 6al4v titanium, 316 stainless steel, and 7075-t6 aluminum.
They are going to be 5 or 6mm at the base tapered down to 3/32" at the teeth. These are machined out of a solid piece of material, and not remnants riveted together like Boone's. They are designed with easy cleaning in mind, so you don't have to waste your time with a q-tip trying to get that Cali dust and chain lube out of all the crevices. The titanium version will weigh in at about 20 grams for a 17t. My prototype weighs 25g, but i am changing it a hair. The lightening pockets will be slightly smaller, with identical pockets on the back side staggered to the front ones. This should make it lighter and stronger.
Also, the teeth are central to the base, so you can flip it around to double the life without screwing up your chain line. Material for the ti version is extremely expensive, so at this time i will be making them to order, with about a week lead time. I can make pretty much any size you want, but anything over 22t will be slightly more expensive for ti. I am also considering offering anodizing for the ti and aluminum versions.
The stainless version is made out of grade 316, which is more wear and corrosion resistant than 304 which most people use (because it's cheap).
The aluminum cogs are obviously going to wear a bit fast, so i recommend them for racing only.
I've worked in the aerospace industry as a Machinist and an Engineer all my life until recently when i opened my own shop, so this is all i know besides single speeding. Quality will be top notch.
Compare my prices to Singlestar's $200 for a ti cog, and theirs are considerably easier to make.


Prices:
aluminum: $30
Stainless: $50
titanium: $100

This is a prototype that i made for a friend as a going away present. I did a burnished finish on it which i didn't like, so they will most likely just have a machined finish. Better pictures to come of current cogs.


Chain Tensioners / Chain Tugs / Nut Tuggers for Singlespeed mountain bikes and BMX bikes with Horizontal dropouts (track ends).

These are all cnc machined from billet 6061 aluminum and hand polished to a mirror finish on exposed surfaces, or anodized in many different colors.

They are designed for use with quick release skewers or bolt on axles. They have bosses built in to catch a quick release axle so you don't have to use spacers or washers.

This design also keeps the tensioners in line with the dropout, so they will not twist when tightened.

The single screw is offset in the direction of rotation so it actually tends to be stiffer than a larger screw central to the slot.

I am supplying 2 different length screws so you can run your wheel forward or rear in your dropouts.

Last but not least, they are equipped with a bottle opener built in. on the drive side, the bottle can be opened with the bike right-side-up. On the non drive side, the bottle can be opened when the bike is upside down. This is done to accommodate easy-access alcoholism from any angle.

These weigh under 9 grams each without the screws.

All hardware is stainless steel.

$20 for 2 tensioners, and i can sell them individually for $11 each if you prefer. Message me for details.


PM me for orders or specific questions.
Thanks for looking!

 

Hmm. What colors can you do for the anodizing? Is the anodizing extra?

 

is that the only design you got for the ti cog? i am considering a 20 or 21.:wave:

 

looking for 48t SS chain ring for five arm crank arm.. don't know what size is it but will find out.. how much would that cost me?

 

hi guys, i'm getting ready to head out the door for the SDMBA biking/camping trip. If any of you guys are going, feel free to check out my stuff. I'll be on a pink single speed.

The colors i can do for anodizing are:
black
clear
fourescent pink
gold
red
blue
orange
yellow
violet

Anodizing is not going to be an extra charge, but polishing will be $5 extra. My anodizing equipment should be in sometime next week, so expect to wait about a week for anodized items.

When i come back sunday, i will work on giving pricing on your specific items.

Thanks!
Dan

I can deffinately work with you if you if you'd like something a bit different. I do have another design,which i'll post up when i get back. This is a very poor picture though, it looks much better in person. I'm going to be making some early this coming week, so keep checking for new stuff!
Thanks,
Dan

 

i would like a set of orange tensioners.. let me know when you could get those out..thanks. enjoy your trip

 

PM sent.

 

thanks for all the interest guys, hopefully all questions have been answered.
If anyone is doing the SDMBA night ride at Cuyamaca, i will be leading the advanced group so you can see my stuff there. Also, i'm going to try to make the str group ride in a couple weeks.

 

E-Type ISCG?

Gonna wait for your return, just curious how hard it would be to cut up some plate to make an I.S.C.G tab that could mount like an E-Type:?:. Prolly need a little grub screw or seat tube u bolt to counter rotation but pretty much looking at the feasibility of mounting a Hammer schmidt on any frame. Would need to be slightly concave to work right but could be pretty easy to make from aluminum since it wont need to withstand the impact of a bash. give it a week till someone want's a BB30 model:lol:.

let us know if it's doable.:wave:

 

Since White Industries only made their 23T version for about a month, they are impossible to find.
Any interest in make=king a 23T version in either SS or Ti?

 

The problem with that is that the HS relies on the ISCG tabs to keep itself from spinning freely counter to your pedaling efforts. There are plenty of ISCG to BB mount adapters out there, the problem is coming up with one that attaches securely enough to work with a HS. Just clamping between the BB and frame isn't enough.

 

Tensioners are all made, all i have to do is anodize them, and my equipment should be here this week. So i'd say later this week, early next week.

I can deffinately do that. I'm waiting on a sample WI ring (which will take a few weeks to get because my sourse went on vacation), but if you have one, i can do it much sooner. Id need to borrow it for a few hours to take measurements of the spline.

 

I'll see if it's something i can come up with, but it may take a little time

 

Hi there

That 960 ring looks really nice. How much shipped to so cal?

 

Thanks!
Do you want polished or anodized? Anodized for all 4 and 5 bolt aluminum rings up to 40t is 35 plus shipping and 8.75% tax, and polished is $40. Shipping is $2.50 for standard mail.
Local pickup is also welcomed, and cash yields a 8.75% discount

So if you want anodized and want it shipped, the total is $42.50
And if you want polished and want it shipped, the total is $48.21

 

What's in the picture? Kinda thinking anno black.

 

The picture is a polished one. Black is not a problem

 

bump!

 

Any word on the .ipt I sent you the other day? :wave:

 

Did you get my PM?
I need, err want, some ano rings and cogs:lol: