Brake discs |
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red leader one
Senior Member Joined: 07 Oct 2014 Location: Cullercoats Status: Offline Points: 4466 |
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Posted: 24 Dec 2016 at 13:55 |
I've been wondering where the above for 1970/80/90's bikes come from as they will be steel.
The rust would worry me. |
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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The trick is to keep using them, then the rust isn't a problem.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Eh? The originals go rusty. Sometimes overnight.
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"Chicken nuggets don't dance on a Tuesday."
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johnno
Senior Member Joined: 19 Jul 2014 Location: loughborough uk Status: Offline Points: 5582 |
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i had my 750 off the road for over a year and the discs got covered in rush . Once back on the road and a few miles of braking and they were perfect again
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1100 sport corsa , Yam R1, guzzi 650tt rider
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ReggieV
Senior Member Joined: 12 Oct 2014 Location: Leeds,Yorkshire Status: Offline Points: 456 |
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HMB in Germany do stainless discs for a lot of models, and of course, these wont rust!. In fact I've just bought some for my latest restoration.
and scroll down. The discs (standard) on my other Guzzi are very rusty by the end of the Winter lay off.
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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All Bike Engineering make stainless discs for some Guzzi models.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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BondEquipe
Senior Member Joined: 10 Dec 2014 Location: Summerzet Status: Offline Points: 1898 |
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Just one of those things. Easy way to tell if someone still has the linked brakes!
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Stephen
Black & Gold LM2 + Other Bikes & Projects! |
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Mike H
Senior Member Joined: 21 May 2014 Location: East Anglia Status: Offline Points: 8733 |
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Yep. Bit of use while riding then all rubbed off. Until the next time. |
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"Chicken nuggets don't dance on a Tuesday."
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Jerry atric
Senior Member Joined: 24 Nov 2014 Location: Wiltshire Status: Offline Points: 3367 |
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Am I a dinasour? I thought that cast iron discs were the dog's do dahs and that stainless was a fashion thing that didn't work so well. Is that failing now overcome by use of modern pads?or am I just wrong?
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Brian UK
Moderator Group Joined: 13 May 2014 Location: Surrey Status: Offline Points: 17641 |
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Cast iron has a higher coefficient of friction, so theoretically works better. You never see stainless discs on anything but bikes.
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Brian.
Better 5 minutes late in this world than years early in the next. |
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Jerry atric
Senior Member Joined: 24 Nov 2014 Location: Wiltshire Status: Offline Points: 3367 |
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Ah right. I remember in the 70s/80s the Jap stainless disc brakes being dreadful in the wet. How have manufacturers overcome that?
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ReggieV
Senior Member Joined: 12 Oct 2014 Location: Leeds,Yorkshire Status: Offline Points: 456 |
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Jerry atric wrote; Am I a dinasour? I thought that cast iron discs were the dog's do dahs and that stainless was a fashion thing that didn't work so well. Is that failing now overcome by use of modern pads?or am I just wrong?
Prior to purchase, I asked Michael at HMB exactly that question, and he stated that "The pads and Dimensions are identical to the steel disc, but these discs have no more corrosion and better performance in wet and dry conditions. when using correct pads (07BB1408)." The pads in question are "carbon-ceramic" which I have purchased, but I won't be able to give my impressions for a couple of months or so.
Edited by ReggieV - 26 Dec 2016 at 17:35 |
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ReggieV
Senior Member Joined: 12 Oct 2014 Location: Leeds,Yorkshire Status: Offline Points: 456 |
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The other advantage as far as I was concerned was that the discs X 2, were about 50 Euro cheaper than buying cast iron from Stein Dinse, so as long as what I've been told turns out to be correct, it's a win, win situation for me.
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BondEquipe
Senior Member Joined: 10 Dec 2014 Location: Summerzet Status: Offline Points: 1898 |
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Pads materials have changed massively since then. I would imagine that the metallurgy of the discs is far more scientific than it was when just not rusting was the aim. Not to imply that you aren't a dinosaur, of course!
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Stephen
Black & Gold LM2 + Other Bikes & Projects! |
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Jerry atric
Senior Member Joined: 24 Nov 2014 Location: Wiltshire Status: Offline Points: 3367 |
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Thanks chaps that's very informative and answers my question. I s'pose now isn't the time to confess to 3 new sets of EBCs finest recently fitted to the old girl's rusty discs I'm not proud.
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