Track style dropouts

[Gordy]

A good design to copy though

Most definitely. I appreciate it!

 

[WEEDHOPPER420]

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

My occ has that style dropouts and I keep having to realign my rear wheel.
Do you have that issue at all

 

[Gordy]

My occ has that style dropouts and I keep having to realign my rear wheel.
Do you have that issue at all

Track style dropouts work best with tensioners like these to keep the axle parallel.

Amazon.com

 

[WEEDHOPPER420]

Track style dropouts work best with tensioners like these to keep the axle parallel.

Amazon.com

Yeah I was planning on getting something along those lines when I can.
Used to have them on my dirt bike growing up

 

[cloakedvillain]

You see it on 70s bikes but what happened to having the swingarm pivot from the same point as the output sprocket? Only needs a sprocket mounted on the swing arm axle and for said axle to be marginally longer.

 

[zean]

I’m just suggesting as an option, maybe in the future you could make availabile left and right heavy duty frame specific aluminum or steel chainstays welded to your 3/16 or 1/4inch aluminum or steel rear dropouts which could then be welded to the strongest part of a bicycle frame: the bottom bracket. This would reinforce specific bike frames like the Felt Faker, Firmstrong Chief, Firmstrong Bruiser, 6-3-0 In the Barrel or even the Schwin Sanctuary. Heavy duty chain stays can be store bought. I mention this because the few years before this year when I was regularly riding motorized bicycles with essentially spec class 212cc engines the frame would develop a hairline crack at the left side chainstay/bottom bracket junction. I would bring the frame to an expert welder, put it all back together and it would crack again about one inch from the new weld. The problem was solved when some heavy duty extra thick reinforced chain stays were welded in between the rear dropouts and bottom bracket. I mean to tell you that it was just about the most fun I ever had jumping on that bike from a stand still and running at around 50mph. I was too scared to go any faster. I don’t understand how some motorized bicycle riders can install powerful china girl engines or larger four stroke engines on felt faker frames or other big chain store bicycle frames and run at more than 40mph without the chain stays or other bike frame part failing.

 

[Gordy]

I’m just suggesting as an option, maybe in the future you could make availabile left and right heavy duty frame specific aluminum or steel chainstays welded to your 3/16 or 1/4inch aluminum or steel rear dropouts which could then be welded to the strongest part of a bicycle frame: the bottom bracket. This would reinforce specific bike frames like the Felt Faker, Firmstrong Chief, Firmstrong Bruiser, 6-3-0 In the Barrel or even the Schwin Sanctuary. Heavy duty chain stays can be store bought. I mention this because the few years before this year when I was regularly riding motorized bicycles with essentially spec class 212cc engines the frame would develop a hairline crack at the chainstay/bottom bracket junction. I would bring the frame to an expert welder, put it all back together and it would crack again about one inch from the new weld. The problem was solved when some heavy duty extra thick reinforced chain stays were welded in between the rear dropouts and bottom bracket. I mean to tell you that it was just about the most fun I ever had jumping on that bike from a stand still and running at around 50mph. I was too scared to go any faster. I don’t understand how some motorized bicycle riders can install powerful china girl engines or larger four stroke engines on felt faker frames or other big chain store bicycle frames and run at more than 40mph without the chain stays or other bike frame part failing.

I eventually would like to start making my own steel tank frames and selling them. I just don't currently have the equipment.