Monty99 Posted August 19, 2011 Report Share Posted August 19, 2011 here is the situation: my rear mono trial has some ultimate bite/hold, but only like 1 hour into a session (or after a run down a hill before every session). but until then there is absolutely zero hold. just a weak bite and loud squeeking. i keep my bike in the basement (is high humidity a problem?). When I get my bike out for a ride, the caliper is absolutely dry except this area: but even this area is no more than moist.... not leaking for that matter. The cap itself is tight. once again, the rest of the caliper is dry (pistons too) the brake is bled perfectly. As I said, it performes nicely except at beginning of rides. any thoughts? Quote Link to comment Share on other sites More sharing options...
Jake. Posted August 19, 2011 Report Share Posted August 19, 2011 Strange... Have your pads bedded in? Or are they worn out? Quote Link to comment Share on other sites More sharing options...
Monty99 Posted August 19, 2011 Author Report Share Posted August 19, 2011 Strange... Have your pads bedded in? Or are they worn out? rotor and pads are new and bedded in. Quote Link to comment Share on other sites More sharing options...
Jake. Posted August 19, 2011 Report Share Posted August 19, 2011 rotor and pads are new and bedded in. Ah man, I don't know how to help you then. Sorry Quote Link to comment Share on other sites More sharing options...
Monty99 Posted August 21, 2011 Author Report Share Posted August 21, 2011 anyone? ...kid killed my thread 1 Quote Link to comment Share on other sites More sharing options...
Alex Dark Posted August 21, 2011 Report Share Posted August 21, 2011 SOunds like something contaminating your braking surface, after an hour or so this wears off. Try moving the bike out of the basement and see if the same occurs? Quote Link to comment Share on other sites More sharing options...
craigjames Posted August 21, 2011 Report Share Posted August 21, 2011 Or it could be taking a while to get some heat into the pads? Quote Link to comment Share on other sites More sharing options...
Jake. Posted August 21, 2011 Report Share Posted August 21, 2011 anyone? ...kid killed my thread How did I kill your thread? Quote Link to comment Share on other sites More sharing options...
JD™ Posted August 21, 2011 Report Share Posted August 21, 2011 How did I kill your thread? See those keys on your keyboard? Sometimes, when you view a thread, you can leave it without ever touching any of them. On topic, as suggested I'd say move it out of the basement for an evening and see how it goes the next day. What else is stored in your basement? Any appliances for the household? 2 Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted August 21, 2011 Report Share Posted August 21, 2011 Have you got the tool to tighten the cap? ive had a new caliper leak from excally the same place. Quote Link to comment Share on other sites More sharing options...
Jake. Posted August 21, 2011 Report Share Posted August 21, 2011 See those keys on your keyboard? Sometimes, when you view a thread, you can leave it without ever touching any of them. On topic, as suggested I'd say move it out of the basement for an evening and see how it goes the next day. What else is stored in your basement? Any appliances for the household? Yeah but I like to reply to stuff, how is that a problem? Quote Link to comment Share on other sites More sharing options...
Monty99 Posted August 21, 2011 Author Report Share Posted August 21, 2011 (edited) got a link to that tool? I dont even know what this cap thing is called Have you got the tool to tighten the cap? ive had a new caliper leak from excally the same place. thx for all the answers guys! i guess i'll have to take my bike with me to the 4th floor of the building todays ride was exactly the same... as for the basement: it's a 6x12ft cellar compartment (thx translator ) in which i keep some car tires, books (i know, not the best idea), a folding bed, etc... it's pretty full Any appliances for the household? does a printer count? Edited August 21, 2011 by Monty99 Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted August 21, 2011 Report Share Posted August 21, 2011 got a link to that tool? I dont even know what this cap thing is called http://www.tartybikes.co.uk/tools/hope_bore_cap_tool/c31p339.html Quote Link to comment Share on other sites More sharing options...
Monty99 Posted August 21, 2011 Author Report Share Posted August 21, 2011 http://www.tartybikes.co.uk/tools/hope_bore_cap_tool/c31p339.html wow thank you! that was quick! and what will i find behind that cap if i decide against tightening but to open it? Quote Link to comment Share on other sites More sharing options...
Martin Reynolds Posted August 21, 2011 Report Share Posted August 21, 2011 wow thank you! that was quick! and what will i find behind that cap if i decide against tightening but to open it? Dont take it off :L You'll find lots of brake fluid and the piston. I just nipped mine up (it was quite loose) tested it, and boom, leak free And what other people have said about the humidity in your basement could have an effect, but i cant see humidity causing your brake to be crap for the first hour of a ride. Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted August 22, 2011 Report Share Posted August 22, 2011 If i remember right there is a seal on the borecap, maybe the seal needs replacing? Quote Link to comment Share on other sites More sharing options...
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