Brake Caliper / Fork Dowels
Discussion
Having a 'debate' at the moment about what brake caliper / fork dowels are actually used for ...
Now my understanding is that they are simply there as a guide for the caliper on to the fork to ensure the calipers are centralised properly. As in some aftermarket setups you actually remove these dowels and use the spacers between the caliper body and fork, then centralise the caliper by pumping the brake and then torqueing up the brake caliper bolts.
I clearly remember when fitting M4's to my Fireblander I had to remove the dowels as part of the install instructions.
Apparently... these dowels actually prevent the caliper from rotating on the disk...
What says PH?
(we are discussing radial application here)
Now my understanding is that they are simply there as a guide for the caliper on to the fork to ensure the calipers are centralised properly. As in some aftermarket setups you actually remove these dowels and use the spacers between the caliper body and fork, then centralise the caliper by pumping the brake and then torqueing up the brake caliper bolts.
I clearly remember when fitting M4's to my Fireblander I had to remove the dowels as part of the install instructions.
Apparently... these dowels actually prevent the caliper from rotating on the disk...
What says PH?
(we are discussing radial application here)
Mr OCD said:
Having a 'debate' at the moment about what brake caliper / fork dowels are actually used for ...
Now my understanding is that they are simply there as a guide for the caliper on to the fork to ensure the calipers are centralised properly. As in some aftermarket setups you actually remove these dowels and use the spacers between the caliper body and fork, then centralise the caliper by pumping the brake and then torqueing up the brake caliper bolts.
I clearly remember when fitting M4's to my Fireblander I had to remove the dowels as part of the install instructions.
Apparently... these dowels actually prevent the caliper from rotating on the disk...
What says PH?
(we are discussing radial application here)
Used as a guide, the bolt holes are clearance holes so if the dowels where not there the caliper would not sit in the correct position, the Fireblade has stepped bushes that do the same job.Now my understanding is that they are simply there as a guide for the caliper on to the fork to ensure the calipers are centralised properly. As in some aftermarket setups you actually remove these dowels and use the spacers between the caliper body and fork, then centralise the caliper by pumping the brake and then torqueing up the brake caliper bolts.
I clearly remember when fitting M4's to my Fireblander I had to remove the dowels as part of the install instructions.
Apparently... these dowels actually prevent the caliper from rotating on the disk...
What says PH?
(we are discussing radial application here)
I think they're mainly used to line it all up as you mention.
It's quite easy (for retarded folk) to strip the threads in the fork bottom so if the caliper is on straight it helps the bolt go in square and find those delicate threads (or thread clearly as there's only one).
It's quite easy (for retarded folk) to strip the threads in the fork bottom so if the caliper is on straight it helps the bolt go in square and find those delicate threads (or thread clearly as there's only one).
Gavia said:
Did I mention I’ve got an M4 though 
Still?? When's the last time you checked?
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