New references, broken links fixed. https://sheldonbrown.com/rollerbrakes.html
![Shimano Rollerbrake](https://cdn-0.sheldonbrown.com/blog/wp-content/uploads/2015/11/rollerbrake-IM41.jpg)
Electronic attitude and heading reference system with stability, ABS and traction control. Powered steering assembly. Once again, ShelBroCo is off the front with new technology. Read about it here!
The SunTour freewheel page now covers Winner Pro, Winner and Alpha models in addition to Perfect, Pro Compe and New Winner.
For once, Sheldon Brown was wrong. Evidently, he never worked on a U brake! The procedure to adjust their return springs’ tension is unusual. Reader Peter Stock has provided the needed information, with photos. Check it out on our U-brake page — and the same procedure also applies to Rollercam brakes.
The site is displaying correctly again. Somehow permissions got changed on include files, tables and images, not our doing. But our Web host has now corrected the problem. Enjoy!
Revision to our bolt-circle diameter pages — several edits, and a new template for Wolf Tooth, Campagnolo and FSA chainrings with uneven bolt-hole spacing. Quickly identify chainrings and find their tooth count. https://sheldonbrown.com/templates-bcd.html
Thru axles have become common on high-end bicycles in recent years, replacing the classic quick release. We have a new post about thru axles — description, types, installation and care, advantages and disadvantages.
We have a new article on kickstands — choices, issues, installation. Sheldon didn’t write about them, because he didn’t use them. But John has them on a couple bicycles, and they can be convenient.
A side stand mounted near the rear hub (Photo by Andrew Dressel, Gnu Free Documentation License, cropped.)