Track style dropouts

[Gordy]

If anyone wants some track style dropouts made for them I could hook you up. I made some for a Columbia steel frame and they work quite nicely. They're cut out on a cnc plasma cutting table. Just gotta let me know what you want.

If you give me some time I can design you a set of dropouts that either completely replace the factory dropouts or that weld to the original dropouts. I can also add a disc brake mount, rear rack mounts, or anything else you might come up with.

All I need from you is what you want as far as brackets, and if you went them to weld to the original dropouts. I will also need the degree angle of the rear chain stays and a few measurements of the original dropouts.

PM me for more details.

 

[Gordy]

Here's an example of the replacement dropouts I made...

 

[Sidewinder Jerry]

Here's an example of the replacement dropouts I made...
View attachment 218565
View attachment 218566

Try experimenting making those with a rear derailleur hanger on them. This could open up a whole new area for you. Something like this means no tensioner would be needed on the left side but you could keep your bicycle gears.

 

[Gordy]

Try experimenting making those with a rear derailleur hanger on them. This could open up a whole new area for you. Something like this means no tensioner would be needed on the left side but you could keep your bicycle gears.

View attachment 218569

Great idea! What size generally is the mount hole for a derailleur?

 

[cloakedvillain]

10mm x1.0 but that exists! As an adapter. https://problemsolversbike.com/products/chain-tensioner-with-hanger

A complete bike:

TUTTO PLUS SILVER BOOTLEG

Tutto Plus is the original do-everything highperformance urban- track frame, in constant evolution since first being launched 8 years ago. The bike can quickly morph from messenger work bike complete with front rack, to alleycat race bike to single-speed cross machine, to indestructible...

usa.cinelli-milano.com

Just the fork ends for frame building: https://framebuildersupply.com/prod...eatstay-chainstay-55-seatstay-chainstay-angle

 

[Sidewinder Jerry]

I'd use a minimum of ³/¹⁶" steel plate

 

[Gordy]

I'd use a minimum of ³/¹⁶" steel plate

I made mine out of 3/16, and that seemed like a good size. Thanks for the advice!

 

[Sidewinder Jerry]

I made mine out of 3/16, and that seemed like a good size. Thanks for the advice!

For a derailleur style I'd use ¼" steel plate. This way you could get plenty of threads in for the derallieur hanger.

 

[Gordy]

10mm x1.0 but that exists! As an adapter. https://problemsolversbike.com/products/chain-tensioner-with-hanger

A complete bike:

TUTTO PLUS SILVER BOOTLEG

Tutto Plus is the original do-everything highperformance urban- track frame, in constant evolution since first being launched 8 years ago. The bike can quickly morph from messenger work bike complete with front rack, to alleycat race bike to single-speed cross machine, to indestructible...

usa.cinelli-milano.com

Just the fork ends for frame building: https://framebuildersupply.com/prod...eatstay-chainstay-55-seatstay-chainstay-angle

View attachment 218571

I actually considered ordering those, but I decided to make a set instead because I had access to the machine to do it. I figured I could offer what I have to other people lol.

 

[Sidewinder Jerry]

I actually considered ordering those, but I decided to make a set instead because I had access to the machine to do it. I figured I could offer what I have to other people lol.

A good design to copy though