reservoirs leaking

[Raux]

During a speed run today my clutch and brake reservoirs starting seaking out the seams. i checked them when i stopped and they were tight. anyone else seen this?

[booger]

Yeah I've seen it, but only with the clutch reservoir cover. Mine was tight too. Perhaps the mating surfaces aren't quite perfect and the fluid wants to seep via capillary action, and moving the handlebars during a ride may exacerbate the issue. Just make sure the fluid's topped up to the proper level. I don't think there is anything else you can do. Alternatively you may explore getting new rubbers for the reservoirs, and/or aftermarket billet reservoir covers. Otherwise just make sure the level's correct, the covers are installed properly and the rubbers underneath are not contorted or bound up contributing to a bad seal. Masters w/ remote reservoirs are also an option.

[herm]

do you have the rizoma billet? if so, they do that.
thread tape seems to help...

[Mash]

do you have the rizoma billet? if so, they do that.
thread tape seems to help...

That's not the first time I've heard that. Do yours leak?  Because I have 3 Rizoma reservoirs, and have not had any seepage at all. 

Just sayin...

[Raux]

thanks for the replys.
the first time i saw it was yesterday when i was keeping the bike for a long period in triple digits. so maybe if i don't do that it won't happen.

[stopintime]

Same thing here.

I believe the fluid between the gasket and reservoir/cap is necessary to keep it tight. So, there will be a minor leak (we call it bleeding in my country) to keep the surfaces wet. The added air pressure will force a small amount of fluid to move out from where it usually is (hidden). Wipe it off, do another speed test and I bet it's not appearing again - until after a few weeks of new build up. Tightening might help too.

[Holden]

So this is why people are always putting sweat bands there...

[ducatiz]

take the rubber out

clean it

put a THIN THIN THIN line of brake parts lube on the seal line.. not the anti squeal, the silicone grease stuff..  sil-glyde or plastilube are good.

it is compatible and won't corrupt your brake/clutch fluid-- it's the same shit you lube the pucks/gaskets with when you rebuilt a caliper.

and don't need much, i am talking about a 0.001 mm layer

seal as normal.  won't leak again.

[EEL]

No personal experience here but would teflon tape on the threads work?

[ducatiz]

No personal experience here but would teflon tape on the threads work?

might help, but hydraulic fluid penetrates pretty much anything..

using a greased seal will block it without leaving any airspace.

[corey]

sounds like osmosis..

[herm]

No personal experience here but would teflon tape on the threads work?

it has worked for me. my theory is that the threads on my rizoma reservoirs are to big. so even with the cap screwed on, air leaks into the cup at speed, causes a little squall in there, and fluid comes out.

[Raux]

take the rubber out

clean it

put a THIN THIN THIN line of brake parts lube on the seal line.. not the anti squeal, the silicone grease stuff..  sil-glyde or plastilube are good.

it is compatible and won't corrupt your brake/clutch fluid-- it's the same shit you lube the pucks/gaskets with when you rebuilt a caliper.

and don't need much, i am talking about a 0.001 mm layer

seal as normal.  won't leak again.

Thanks.had the same issue again today after just tightening them. i will have to open, clean and use the grease.