Cant tell you how much I hate this fuckin stuff......no wonder it's now banned from most motorsport activities
.......sorry, just needed to share my frustration
| UK Buell Enthusiasts Group https://ukbeg.com/forum/ |
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| SillyCon DOT 5 brake fluid https://ukbeg.com/forum/viewtopic.php?f=8&t=13769 |
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| Author: | Maz [ 02 Mar 2012 22:20 ] |
| Post subject: | SillyCon DOT 5 brake fluid |
Cant tell you how much I hate this fuckin stuff......no wonder it's now banned from most motorsport activities .......sorry, just needed to share my frustration
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| Author: | Adam [ 02 Mar 2012 22:59 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Nip down to the Offy, and buy a bottle of Vodka then 
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| Author: | Maz [ 02 Mar 2012 23:20 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
No shortage of voddy here mate (but you already worked that out ).......at least vodka is hydroscopic and only rots my guts/brain cells as opposed to the braking systems on my bikes 
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| Author: | WILLYBUELL [ 03 Mar 2012 00:55 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Maz wrote: Cant tell you how much I hate this fuckin stuff......no wonder it's now banned from most motorsport activities .......sorry, just needed to share my frustration get it off yer chest youth 
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| Author: | chris(madrid) [ 03 Mar 2012 14:59 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Maz wrote: Cant tell you how much I hate this fuckin stuff...... Any particular reason? - I've been using it since the early '80's with no probbies at all.
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| Author: | Maz [ 03 Mar 2012 15:42 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Only advantage I can think of re. DOT 5 is that it wont mark ya paint if you're clumsy enough to spill it.......other than that I cant think of a single good reason for using it. DOT 5 is not hydroscopic, so any moisture entering the system drops to the lowest point ie. calipers. It just sits there and rots the chrome off the pistons.......even a regular fluid change wont shift it. Additionally, because H2O boils at 100C, there's a good chance of vapour lock resulting in spongey/no brakes (which is why it's banned in motorsports) Using DOT 5 in systems designed for 3,4 or 5.1 can damage the seals if they're specific. |
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| Author: | chris(madrid) [ 03 Mar 2012 17:12 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Maz wrote: DOT 5 is not hydroscopic, so any moisture entering the system drops to the lowest point ie. calipers. It just sits there and rots the chrome off the pistons.......even a regular fluid change wont shift it. Never suffered from any of those. Additionally, because H2O boils at 100C, there's a good chance of vapour lock resulting in spongey/no brakes (which is why it's banned in motorsports) Using DOT 5 in systems designed for 3,4 or 5.1 can damage the seals if they're specific. Maybe Brembo's are immune.  That and systems I've changed to Dot5 have always been re-hosed and flushed (not just bled) at the same time. All my bikes (most of which, being Italian came Brembo'd) have always run on Dot5 (Harley & Tuber came Dot5'd naturally). Beats me too, how that much water gets into a sealed system that's hydrophobic. I'm not being funny - I mean it. Mind you, once you've mastered bleeding Guzzi linked brakes (esp those with proportioning valves allied to twin bleed valves on the old callipers) the rest is peasy.  The early stuff from EBC was a pretty mauve colour too. |
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| Author: | Maz [ 03 Mar 2012 17:44 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
So what's your reason for using DOT5 ? |
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| Author: | chris(madrid) [ 03 Mar 2012 17:49 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Maz wrote: So what's your reason for using DOT5 ? Well the Guzzi has had it in for the best part of 25 years. And as I've never had issues - I see no point not to trust with that I know. And the two bikes preceding the Rocket (the only other bikes I've had since 1990) came with Dot5. I had to change the R3 front hoses - and saw no reason not to do as I've always done.And I just love mauve dahrling! 
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| Author: | Maz [ 03 Mar 2012 18:26 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
OK, let me ask you another way........what's wrong with DOT 4 or better yet 5.1
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| Author: | Ballacraine [ 03 Mar 2012 19:29 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
You are correct that Dot 5 has 'chemical issues.' I always use 5.1 in all of my bikes. Never had a problem since. Nige. 
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| Author: | Maz [ 03 Mar 2012 20:02 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
I use DOT 5 in bikes designed for it......I know for a fact that the early Buells which used 5 have seal issues if anything else is used. What I also know is that every single time I've stripped a DOT 5 caliper the pistons are well corroded behind the seals, unlike DOT 4 calipers which are usually mint behind the seals. As far as I know, H-D's still use DOT 5 and the dealers were a little confused when Erik decided to ditch it in favour of the far superior modern fluids and they had to stock something other than the purple shite. Speak to anyone who manufactures brakes and the very mention of DOT 5 will result in a tirade of abuse and scorn. The arguement for 5 used to be its higher boiling point but that only works if the fluid aint sitting on water in the bottom of the calipers. 5.1 now well exceeds the boiling point of 5 
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| Author: | pash [ 03 Mar 2012 20:28 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
Maybe someone can help me here cos I am feeling a bit dumb. Let me share my dumbness by using 1998 S1W and 2002 X1 to explain... These two bikes have the same front and rear brake calipers, they have the same front and rear master cylinders. I am sure the brake hoses are different, but I am also sure they are variations on a theme (braided hose at the front and steel brake pipe connected to a bit of rubber hose), and most people have probably replaced this stuff with Goodridge anyway (the fronts were Goodridge out of the factory). Owners of the 1998 S1W are directed to use DOT5 (silicon) whereas owners of the 2002 X1 are directed to use DOT4 (mineral). Lets look at seal part numbers: S1W front master cylinder seal kit 45185-98Y (superceded by N0220.F) S1W front caliper seal kit 44148-98Y (superceded by H0020.FA) S1W rear master cylinder seal kit 45073-98Y (superceded by H0040.F) S1W rear caliper seal kit 44149-98Y (superceded by H0030.F) X1 front master cylinder seal kit 45185-98Y (superceded by N0220.F) X1 front caliper seal kit 44148-98Y (superceded by H0020.FA) X1 rear master cylinder seal kit H0040.F X1 rear caliper seal kit 44149-98Y (superceded by H0030.F) Well I'll be dipped in dogshit if they are not the same... So, I would guess that you can use DOT4 in your S1W without messing seals up... Now, I can't vouch for PM calipers, as being Merican, they probably need DOT5, however the Brembos, being European are most probably designed for DOT4 (or 5.1). What am I missing???? |
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| Author: | Maz [ 03 Mar 2012 20:35 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
It's a contamination thing Pash methinks Some reading for you.......http://uk.search.yahoo.com/r/_ylt=A7x9Q ... luid.shtml |
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| Author: | Maz [ 03 Mar 2012 21:14 ] |
| Post subject: | Re: SillyCon DOT 5 brake fluid |
......and more.....http://uk.search.yahoo.com/r/_ylt=A7x9Q ... luids.html .......there's chuffin loadsa this stuff out there and they all basically slag off DOT5 and warn against ever moving from 5 to mineral without changing seals, hoses, etc....... |
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