Sold Schwinn Caliper Brake Adapters

[schwinnbmxaddict]

Fully CNC machined 6061 Aluminum caliper brake adapters with internal threading for added strength and stability. Will work any Schwinn frame not originally set up for caliper brakes. Comes with complete mounting hardware. Will work on other similar style brake bridge or fender mounts. Last three pictures show adapter installed. Local Pick Up in The San Fernando Valley, Northridge 91325.

CAN SHIP AT BUYERS EXPENSE VIA USPS..



Schwinn, Klunker, BMX Cruiser, Champion BMX, Gary Littlejohn, Webco,
Old School BMX

 

[Big J]

Those are cool.

 

[fat tire trader]

I like the way they fit into the bridge, but, can they be made so the brake is higher and not so close to the tire?

 

[Wolfmac]

@schwinnbmxaddict Kindly look at the back of the caliper shown in your photo and tell us what model it is.

 

[schwinnbmxaddict]

Weinmann 890s. Payment received, order shipping tomorrow. Thank you.

 

[schwinnbmxaddict]

New to this site. Still trying to figure this out.

 

[coasterbrakejunkie1969]

I like the way they fit into the bridge, but, can they be made so the brake is higher and not so close to the tire?

An 890, wouldn’t a 1020 and 1080 be even longer?

 

[Wolfmac]

I have a similar adapter applied to a post war frame and it successfully positioned the mx1000 with the shoe at the very top of the block.

And here’s the same bike with the 890 caliper leaving about a 1/4” adjustment in the block.

The MX 900 would be ideally suited for these adapters, having the same length as the 890 but the features and strength of the 1000. Those are hard to come by.

I’ve ordered one of the OP’s adapters and will post photos as soon as I get it mocked up using the MX900.

 

[mrg]

Couldn’t the hole be drilled a little closer to the bridge to raise the caliper and have more adjustment vertically? Maybe eliminate that block completely or will that interfere with the top stud?, but I guess it should be discussed in another thread. Sorry for crashing your for sale thread.

 

[Wolfmac]

There’s limited space to move the pivot rod hole upwards before intersecting the bore that the mounting bolt resides in.

Moving it up to its maximum height would be ideal for adjustability of the shoes but strength becomes jeopardized. The one I currently own, utilizes a socket cap machine screw to mount the adapter to the frame and it’s the head of that fastener that takes up space that otherwise could be used to position the pivot rod at its highest point.

I imagined if it were made of steel and a threaded rod (set screw) took the place of the socket cap and was captive to the adapter via high strength thread locker, you gain the strength of steel and can minimize the threaded bore, allowing the cross bore hole to be moved up at least another 1/4”.

Now I’m assuming this version is also using a socket cap screw (Allen head) since I see the bore extends all the way through the base of the adapter.

Just my input for the OP, having put one to use and noodled on making improvements to allow for the use of the superior caliper design of the MX1000 while affording some adjustability in the shoe position.

If you can design it the way I’ve described and build it from SS, that would be a home-run and probably sell well.