Formula RO brakes leaking from behind clamp/bar area anyone?
on and onSubscriber
The rubber diaphragm/ seal behind the cap needs to be replaced.
The older R1’s do this but parts are available on their site.
last time i did my R1’s it cost around £30 as the cap and diaphragm are bonded together so you have to buy them as a pair ( even though the tow parts are listed as separate items lol)
oh, you could always just tighten the cap and see if that helps 🙂Posted 4 years agoBrownMember
Warning: potentially utterly useless reply as I haven’t got any Formula brakes to look at (at work) and have only done a brief google.
That sounds like the top of the master cylinder. I’m not sure if there’s a seal there that can be replaced on its own or if you need to buy an entire new body. Ukbikestore used to be good for parts.
If there’s just a little bleeder hole that fluid’s leaking out of, it is sometimes possible (with other brakes) to get water or something on top of the reservoir and for this to then bubble out and appear to be leaking, but that’s probably unlikely given the position of the cylinder. Is it definitely brake fluid?
EDIT: What he said.Posted 4 years agoNorthwindSubscriber
It’s not necessarily a problem… The holes in the back of the lever are the diaphragm vents, and if there’s any fluid in the diaphragm then it can escape, making it look like it’s leaking. So it could be fluid leaking into the diaphragm or past the seals, but not necessarily.
If it is leaking, then like onandon says just giving it a wee tighten can help, the cap/seal/diaphragm threads in and I’ve seen one that had come loose or maybe never been tightened right, a wee turn fixed a minor leak.Posted 4 years agohaggis1978Member
I’ve got 2 sets of formula RO brakes and both sets are leaking from behind the clamp. Well not the clamp but where the lever is clamped to the bar. On removal the oil appears to be coming from the middle of 3 orifices when the lever is pulled. No loss of power as this was just whilst checking them out in the house before a ride but obviously if they continue to leak oil they will lose power.
My problem is that both sets have only been used a couple of times and as such are like new. One set I did buy new but the other was from a guy who removed them from his bike when new and Silverfish want £25 to service each brake not including parts and postage!
Has anyone else experienced this problem with their brakes and if so what was the problem? CheersPosted 4 years agoJonEdwardsMember
This is going back a while now but my Oros and Ones both did this – it’s a “design feature” – there’s a vent there and if you overfill the resevoir, that’s where it comes out!
Not a problem, unless you have carbon bars, at which point it strips the laquer off underneath the clamp.Posted 4 years ago
The topic ‘Formula RO brakes leaking from behind clamp/bar area anyone?’ is closed to new replies.