Johnny C.
New Member
- Local time
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- Joined
- Mar 31, 2008
- Messages
- 19
The front disc brake was fairly easy. I used 24, 8mm, standard thread, hex nuts; 6, 8mm bolts; and 6, 8mm nylon locking nuts for mounting the disk to the front hub. 8 mm is the size of the head, not the shaft. I believe the shafts are 5 mm. I used the 8 mm, nylon, locking nuts for the "lug nuts".
Make Lug Bolts - All you have to do is take your disc and lay it centered on the front rim. Drill one hole in the hub of the front rim that will match the disc brake's mounting hole. Put the 8 mm bolt (now your lug bolt) through the hole in the hub from the inside out (so the disk brake goes over the threaded end of the bolt, like car tires). Put 4 nuts on the lug bolt to act as spacers between your bike's hub and the disc. Put your disc brake over your first lug bolt.
Center the disc brake on the hub and drill a hole through the hub using the mounting hole on the disc brake directly opposite of your original hole. Take the disc off and put your next lug bolt through the bicycle hub and add 4 nuts as spacers.
Put your disc on and bolt it to your 2 lug bolts using nylon, locking nuts. Drill the remaining holes and remove your disc. Repeat the process for installing the "lug bolts".
Keep the spacer nuts a little loose until you get the disc on. The holes will be a little off (since nobody can drill holes perfectly). Once you get all 6 lug bolts through the mounting holes, hand tighten the nylon lug bolts, then take an 8mm wrench and tighten every spacer nut. Start with the ones that are closest to the hub, then move to the 2nd, the 3rd, and finally the 4th. Once all of the spacer nuts are snug, tighten down your nylon nuts, then cut off the excess bolt.
Mount your caliper to the forks. You may have to bend the support for your front fender to make room for the caliper to move.
Make Lug Bolts - All you have to do is take your disc and lay it centered on the front rim. Drill one hole in the hub of the front rim that will match the disc brake's mounting hole. Put the 8 mm bolt (now your lug bolt) through the hole in the hub from the inside out (so the disk brake goes over the threaded end of the bolt, like car tires). Put 4 nuts on the lug bolt to act as spacers between your bike's hub and the disc. Put your disc brake over your first lug bolt.
Center the disc brake on the hub and drill a hole through the hub using the mounting hole on the disc brake directly opposite of your original hole. Take the disc off and put your next lug bolt through the bicycle hub and add 4 nuts as spacers.
Put your disc on and bolt it to your 2 lug bolts using nylon, locking nuts. Drill the remaining holes and remove your disc. Repeat the process for installing the "lug bolts".
Keep the spacer nuts a little loose until you get the disc on. The holes will be a little off (since nobody can drill holes perfectly). Once you get all 6 lug bolts through the mounting holes, hand tighten the nylon lug bolts, then take an 8mm wrench and tighten every spacer nut. Start with the ones that are closest to the hub, then move to the 2nd, the 3rd, and finally the 4th. Once all of the spacer nuts are snug, tighten down your nylon nuts, then cut off the excess bolt.
Mount your caliper to the forks. You may have to bend the support for your front fender to make room for the caliper to move.
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