|
|
|
|
Figure 1: ABP Standard quick-release lever (left), nut (right), and illustration of bearing assembly without a hub or quick-release skewer |
ABP (Advanced Braking Pivot) can be found only on a rear wheel (Figure 1).
|
|
|
|
Figure 1: ABP Standard quick-release lever (left), nut (right), and illustration of bearing assembly without a hub or quick-release skewer |
This is a special design that places the rear wheel pivot concentric with, or at the same point, as the rear wheel axle. With this pivot placement, the disc brake mount can be located so that the disc brake has very little effect on rear suspension movement, an excellent feature that keeps the suspension active even under hard braking. The axle bolt or quick-release skewer passes through the hub, the suspension pivot bearings, and threads into the nut on the other end. To remove the rear wheel, the ABP skewer or axle must be removed from the hub and frame.
The ABP design requires that the axle bolt be a specific length. If the length is incorrect, the axle bolt could break, causing the rear wheel to be loose. Do not exchange or replace the axle bolt unless it is the correct length. If you are unsure, consult your dealer.
The ABP quick-release lever and bearing are not compatible with some bicycle trainers or exercise stands. Riding your bike in such a stand could damage the bearings. If you want to ride your bicycle in a trainer, consult your dealer for suitable substitute parts.
There are several types of ABP wheel attachments:
l Standard ABP: The quick-release adjusting nut is not attached to the frame.
l ABP Race: The quick-release adjusting nut is attached to the frame, allowing slightly faster wheel removal and installation.
l ABP Convert: The quick-release rod or skewer can be changed from a standard 5mm skewer to a 15mm thru-axle. This requires changing the parts of the system that attach to the frame.
l ABP with allen wrench: There is no quick-release mechanism. Instead, the skewer is removed or installed with an allen wrench.
