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Monday, May 7, 2012

Re: [DucatiST] Re: Full Floater? (was Vibrating front)

 

When we think of full floating rotors one must remember, that means floating side to side, only.  By necessity the buttons need to be precisely fitted or the mere act of using them will have the buttons hammering into the aluminum carrier with resultant negative effect much like that loose clutch basket/plates scenario.
 
I've heard mention of a few people having the aluminum carriers go loose and wallow out where the buttons mount over the years, but very few to be honest.  I have five sets of them, one original fitment to my 900SP and one I put on my 888LTD.  Both sets are in use fairly harshly, more so the 900 as it's my track bike.  Both don't have any more rattle than they did when I first got them.  I actually picked up the spare sets I have as insurance for when the iron bits wore out, not the aluminum! One set is going on my other project 888 though.
Never cleaned the rotors, have always used Ferodo or EBC pads, nothing else. Never had galling, never had a rotor out of true.
 
I do clean once in a while, but very infrequently as it's a bad habit I try to avoid. Cole might attest my bikes are "OK" in the cleanliness department. I do change fluid at least once a year, usually twice.  It's cheap insurance, costs little, takes even less time and affords one the opportunity to "look around a bit" while doing the job to see if anything else should be addressed. I'm always happy with my brakes, so far.  ;)
 
If anyone has difficulties such as these beyond the obvious possible warped rotor, I'd check pad material first after the banjo bolt issue with ST's. Some pads were known to cause early erosion and uneven wear on rotors.  EBC greens?  I can't recall which as it's been a while.
 
JMFHE,
W
NickW
I put a full floating kit in my stock rotors and it was bichen for about 6K miles then I started to get some front end shake. They wore so much that they would go off center and cause imbalance. I replaced the rotors with a good used set and the front end shake went away. Maybe that is why the factory uses semi? The bike is an 04ST4s.
Randy
Sent from my Verizon Wireless BlackBerry
From: "Nick Woods" <nickw@cooptel.net>
Date: Mon, 07 May 2012 05:59:15 -0000
Subject: [DucatiST] Re: Full Floater? (was Vibrating front)

 


--- In st2_owners@yahoogroups.com, Colin Forster <ecol@...> wrote:
> Late news..have just had a pm from another kiwi, Nick, who had gone down same road as me inc making the OE buttons into full floaters.He seems to have now solved the prob with new full floating buttons from Corse Dynamics.Interesting..will keep you posted.
> Thanks again to all for suggestions.
>
>
> Colin
> 02 ST4S
>




-----Original Message-----
From: rntdumont <rntdumont@charter.net>
To: st2_owners <st2_owners@yahoogroups.com>
Sent: Mon, May 7, 2012 2:24 am
Subject: Re: [DucatiST] Re: Full Floater? (was Vibrating front)

 
NickW
I put a full floating kit in my stock rotors and it was bichen for about 6K miles then I started to get some front end shake. They wore so much that they would go off center and cause imbalance. I replaced the rotors with a good used set and the front end shake went away. Maybe that is why the factory uses semi? The bike is an 04ST4s.
Randy
Sent from my Verizon Wireless BlackBerry
From: "Nick Woods" <nickw@cooptel.net>
Date: Mon, 07 May 2012 05:59:15 -0000
Subject: [DucatiST] Re: Full Floater? (was Vibrating front)

 


--- In st2_owners@yahoogroups.com, Colin Forster <ecol@...> wrote:
> Late news..have just had a pm from another kiwi, Nick, who had gone down same road as me inc making the OE buttons into full floaters.He seems to have now solved the prob with new full floating buttons from Corse Dynamics.Interesting..will keep you posted.
> Thanks again to all for suggestions.
>
>
> Colin
> 02 ST4S
>

OK, if full-floating buttons work so much better, why do we have the semi-floaters? I see the Corse Dynamics full-floaters warn of more rattle, and it puts me in mind of the Ducati dry clutch situation where the more they rattle, the more they seem to wear. Perhaps this isn't relevant because all the motion in a brake disc situation is in one direction, consistent and relatively-smooth. Maybe it's just a question of degree: semis will compensate for minor/residual disc runout but fulls are needed in the worst case. Note that neither will compensate for disc thickness variation and it wouldn't take much!

NickW

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Posted by Sports at 11:34 AM

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