planet x alan Posted December 6, 2011 Report Share Posted December 6, 2011 Just gone dual disc on my 221, and as a temporary measure (till I find some mono trials/ tech trials reasonably priced) I've stuck the rear brake off my dirt jumper on. It's an Avid Elixr. Now why is it when i took the dirt jumper in from the shed the wheel spun nice and freely. Put it on the monty and it's pretty much stuck on. Goes outside on it for 10 mins and it frees up. Seems like something is expanding in the heat/contracting in the cold. The brake is 2 rides old (2 rides if you count taking the dirt jumper out and spending more time on the bmx twice). I heard of this happening on the old hope C2 brakes and here's my questions: 1. Exactly what's causing this to happen 2. Why does it not happen when the brake is being used extensively and generating its own heat. 3. Why have I never came across this running open system brakes and hs33s? I know the open systems have the reservoir etc etc But I would assume it would make the brake feel slightly different momentarily. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted December 6, 2011 Report Share Posted December 6, 2011 The elixir is open system, sounds like it needs a good bleed. Quote Link to comment Share on other sites More sharing options...
planet x alan Posted December 6, 2011 Author Report Share Posted December 6, 2011 It's open system? It's 2 rides old. Surely if it needed a bleed I'd feel the air in it and I'd lose all pressure if I was to pump the brake upside down? Things only seem to change when temperature changes. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted December 7, 2011 Report Share Posted December 7, 2011 Things only seem to change when temperature changes. An indication it needs a bleed - air changes volume to a much greater level with change in temperature compared with dot fluid. Quote Link to comment Share on other sites More sharing options...
Azarathal Posted December 7, 2011 Report Share Posted December 7, 2011 Why are avids such a pain to bleed. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted December 7, 2011 Report Share Posted December 7, 2011 Americans Quote Link to comment Share on other sites More sharing options...
Azarathal Posted December 7, 2011 Report Share Posted December 7, 2011 I suppose it is a pretty decent way to ensure no bubbles are stuck somewhere in the caliper but its a bit ott Quote Link to comment Share on other sites More sharing options...
JD™ Posted December 7, 2011 Report Share Posted December 7, 2011 I suppose it is a pretty decent way to ensure no bubbles are stuck somewhere in the caliper but its a bit ott They have to fool proof their systems against people who find Hopes really hard to bleed (Mentioning no names...........) Quote Link to comment Share on other sites More sharing options...
Azarathal Posted December 7, 2011 Report Share Posted December 7, 2011 Is that aimed at me? I never said I found Hopes hard to bleed, I just occasionally have those "special" moments when everything seems to go wrong Quote Link to comment Share on other sites More sharing options...
Matthew_Gibson Posted December 7, 2011 Report Share Posted December 7, 2011 I bet hope looked at the video and looked at easier ways to bleed brakes!! Quote Link to comment Share on other sites More sharing options...
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