Sports: Re: [DucatiST] Re: Brake question AKA why did this (seem) to work?

I'm no bake specialist but I agree, and I do it the old fashioned way using the pump-release, do again filling from the reservoir method. I bought one of those pumps to try and make it easier but never really got it working right, my inner Luddite coming out I guess.

Anyway, with all my bikes filling the garage I replace the fluid twice a year and it still takes less than a half hour per bike. And the only reason I do it so frequently is I prefer to have clear fluid in the reservoirs and it gives me a chance to go over the bike checking things out. Piece of mind in other words.

If it's still spongy after bleeding you are letting air into the system or there is water you aren't getting out, might have a leak also somewhere.

JMHO,

1994 Ducati 888SPOLTD

1995 Ducati 900SP (track bike)

2000 Cagiva Gran Canyon

2004 BMW R1150RT

1999 Victory V92c

As a brake specialist is concur with Nick's assessment. Tricks don't  work only good solid physics. Bleed your brakes properly and you will  have no problems. Except of course when the fluid boils which is a  subject for a whole other discussion.  Gary '01 ST4 Gaston, OR  On 8/9/2011 11:18 PM, Nick Woods wrote: > >

-----Original Message-----
From: Gary L. Smith <lgranch@laughing-gargoyle.com>
To: st2_owners <st2_owners@yahoogroups.com>
Sent: Wed, Aug 10, 2011 2:39 pm
Subject: Re: [DucatiST] Re: Brake question AKA why did this (seem) to work?

As a brake specialist is concur with Nick's assessment. Tricks don't  work only good solid physics. Bleed your brakes properly and you will  have no problems. Except of course when the fluid boils which is a  subject for a whole other discussion.  Gary '01 ST4 Gaston, OR  On 8/9/2011 11:18 PM, Nick Woods wrote: > > > > --- In st2_owners@yahoogroups.com  > <mailto:st2_owners%40yahoogroups.com>, Will Fulford  > <williford112000@...> wrote: > > > > > > > > It should hold up for you Huss. There was still a tiny bit of air in  > your system and the pressure you held on it overnight either allowed  > the bubble to release into the reservoir or dissipate into the fluid  > more evenly which is why it feels firm now. > > Sorry Will, I don't buy that! There is no way that air mysteriously  > finds it's way back into the reservoir, since all exits are barred  > when you do this trick. The only possible answer is that the  > compressible air actually dissolves into the fluid under sustained  > pressure, just like nitrogen does into the blood during deep diving.  > So, at least to start with, there is no more compressible air in the  > system, so the brake feels firm. However, just as in the bends in  > divers, releasing the pressure can allow the air to come back out of  > solution and make it's presence known again. I'm pretty sure that Good  > ol' Fariborz commented that riding at highish altitude had his brakes  > go soft again, which confirms this hypothesis. > > So, the trick works, but not in the way that 99.9% of bikers think it  > does, and it isn't a substitute for proper bleeding! > > NickW, UK > >     ------------------------------------  To unsubscribe from the list please send an email to: st2_owners-unsubscribe@yahoogroups.comYahoo!  Groups Links  <*> To visit your group on the web, go to:     http://groups.yahoo.com/group/st2_owners/  <*> Your email settings:     Individual Email | Traditional  <*> To change settings online go to:     http://groups.yahoo.com/group/st2_owners/join     (Yahoo! ID required)  <*> To change settings via email:     st2_owners-digest@yahoogroups.com      st2_owners-fullfeatured@yahoogroups.com  <*> To unsubscribe from this group, send an email to:     st2_owners-unsubscribe@yahoogroups.com  <*> Your use of Yahoo! Groups is subject to:     http://docs.yahoo.com/info/terms/