Canti Brakes on Step-Through Frame
#1
Senior Member
Thread Starter
Join Date: Aug 2005
Location: St. Charles, MO
Posts: 211
Bikes: Schwinn High Plains, Trek 750 Multi-Track, Schwinn Passage, Schwinn High Sierra
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Canti Brakes on Step-Through Frame
I'm fixing up a step-through frame that has cantilever brakes. I'm having quite a bit of trouble getting the rear brake right. The cable routing goes from the lever along the down tube, under the bottom bracket, up the seat tube and over a pulley before it gets to the straddle cable hanger.
When I get the brake adjusted, there's so much springiness in the cable as it goes over the pulley that the lever uses about half its pull distance just taking out the springiness before it starts taking up any cable to actually actuate the brake. The lever ends up bottoming out before the brake is applied fully.
I'm using the brakes that were on the bike, but with different levers. The levers I'm using came off a bike with cantis as well. I'm assuming they would be appropriate for this use.
I've thought of taking the cable off and prebending it in the area where it passes over the pulley. Other than that, I'm not sure what to try. Any suggestions or tips would be greatly appreciated.
When I get the brake adjusted, there's so much springiness in the cable as it goes over the pulley that the lever uses about half its pull distance just taking out the springiness before it starts taking up any cable to actually actuate the brake. The lever ends up bottoming out before the brake is applied fully.
I'm using the brakes that were on the bike, but with different levers. The levers I'm using came off a bike with cantis as well. I'm assuming they would be appropriate for this use.
I've thought of taking the cable off and prebending it in the area where it passes over the pulley. Other than that, I'm not sure what to try. Any suggestions or tips would be greatly appreciated.
#2
Banned
So there are bosses for V/Cantilevers on the frame?
and they are on the seat stay?
I have seen cable runs under the lowered top tube,
but never under the down tube. is this a mono tube frame?
a braided brake cable may go around all the bends better than the tight twisted cables.
I'd suggest the best brake: Magura hydrostop, its the hydraulic rim brake.
so as the braking force is a fluid, it won't be effected
by circuitous routes to get there.. fits on V/canti bosses..
German Made.
and they are on the seat stay?
I have seen cable runs under the lowered top tube,
but never under the down tube. is this a mono tube frame?
a braided brake cable may go around all the bends better than the tight twisted cables.
I'd suggest the best brake: Magura hydrostop, its the hydraulic rim brake.
so as the braking force is a fluid, it won't be effected
by circuitous routes to get there.. fits on V/canti bosses..
German Made.
#3
Senior Member
Thread Starter
Join Date: Aug 2005
Location: St. Charles, MO
Posts: 211
Bikes: Schwinn High Plains, Trek 750 Multi-Track, Schwinn Passage, Schwinn High Sierra
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
So there are bosses for V/Cantilevers on the frame?
and they are on the seat stay?
I have seen cable runs under the lowered top tube,
but never under the down tube. is this a mono tube frame?
a braided brake cable may go around all the bends better than the tight twisted cables.
I'd suggest the best brake: Magura hydrostop, its the hydraulic rim brake.
so as the braking force is a fluid, it won't be effected
by circuitous routes to get there.. fits on V/canti bosses..
German Made.
and they are on the seat stay?
I have seen cable runs under the lowered top tube,
but never under the down tube. is this a mono tube frame?
a braided brake cable may go around all the bends better than the tight twisted cables.
I'd suggest the best brake: Magura hydrostop, its the hydraulic rim brake.
so as the braking force is a fluid, it won't be effected
by circuitous routes to get there.. fits on V/canti bosses..
German Made.
This bike is a low-budget build for a friend, so I would like to be able to work it out without adding any different components. Is the braided cable readily available at bike shops?
#4
Banned
Is the braided cable readily available at bike shops?
and remembering when it was so
coiling the cable may be your only recourse , to be pre bent at the roller.
maybe pick up some V brake cable rubber seals,
upturned sections of housing are famous for retaining water, inside.
#5
Senior Member
It's the pulley that sounds like it's the problem. I'm guessing that if you tension up the cable so it's tight enough to form around the pulley well then the cable tension is too tight and it causes the caliper arms to remain in and drag the pads on the rim. If this is the case I think I'd look at a seat post cable hanger to replace the pulley so that you could use housing from the sloping tube cable stop all the way to the seat post anchor mounted stop. The cable would then exit and go right into the straddle cable clamp.
In the end this sounds like a rather complex sort of setup. Some pictures of the cable path and especially around this troublesome pulley would greatly aid in suggesting options for you.
In the end this sounds like a rather complex sort of setup. Some pictures of the cable path and especially around this troublesome pulley would greatly aid in suggesting options for you.
Thread
Thread Starter
Forum
Replies
Last Post
tmh657
Bicycle Mechanics
14
12-03-14 01:01 PM
rms13
Singlespeed & Fixed Gear
10
05-28-14 03:57 PM