thanks dennis

On Feb 9, 1:07 am, Dennis Hammerl <[email protected]> wrote:
> If one is still OK, leave it on. Just make sure the calipers can move on the 
> pins.
>
> ________________________________
> From: mongoose22p <[email protected]>
> To: Nighthawk Motorcycle Lovers! <[email protected]>
> Sent: Mon, February 8, 2010 11:55:37 PM
> Subject: [Nighthawk Lovers] Re: stuck brake caliper 82 750
>
> only one of my rotors i scarred up but i bought a set should i change
> both or just the bad one thanks
>
> On Feb 8, 10:48 pm, Dennis Hammerl <[email protected]> wrote:
>
>
>
>
>
> > Warp on the pads ? Shouldn't be. The rotors have a "wave" of +/-- .005"  
> > The machine that grinds them is a real trip, computer operated and all. The 
> > calipers "float" and will "follow" the wave when the brakes are applied. 
> > Once the brakes are released, the wave bats the pads away and the pads 
> > spend very little time in contact with the spinning rotor. When a bike 
> > emits a pulsed brake squeal, the calipers have gotten stuck and don't float 
> > anymore. The 70's bikes had a pivoted arm for the caliper and used single 
> > piston brakes. Once they started to use longer pads and double piston 
> > calipers, they went to a sliding sleeve setup so the pads would stay 
> > parallel. Pivots, sleeves, all can rust up.  
> > I had a Wing owner give me a ration over his "warped" rotor. (Rear of 
> > course, most Wing owners don't use the front brakes) He went to turn it 
> > (scarred from abuse) and noticed the warp (duh... in a lathe, sure you can) 
> > He proceeded to turn it flat. By the time he had a complete pass on one 
> > side, it was below minimum thickness. I got the last laugh. He had an 
> > Aspencade with ventilated rotors. $270 to replace. Tough darts..
>
> > ________________________________
> > From: stanley/ Randolph <[email protected]>
> > To: [email protected]
> > Sent: Mon, February 8, 2010 12:25:08 PM
> > Subject: Re: [Nighthawk Lovers] stuck brake caliper 82 750
>
> > That is most excellent to know.  I noticed the warp on the pads of my 450, 
> > and wondered about it, thinking it might be something like that.  
>
> > Stanley
>
> > --- On Sun, 2/7/10, Dennis Hammerl <[email protected]> wrote:
>
> > >From: Dennis Hammerl <[email protected]>
> > >Subject: Re: [Nighthawk Lovers] stuck brake caliper 82 750
> > >To: [email protected]
> > >Date: Sunday, February 7, 2010, 2:07 PM
>
> > >Rotors can not be turned(#). Replace only. Rebuild caliper/s as needed. 
> > >Aftermarket pads can be better than OEM. Please avoid sintered metallic 
> > >pads. The OEM are sintered and cause huge wear.
>
> > ># Rotors are not flat, turning them makes them flat and end result is 
> > >below minimum spec thickness. Rotors have a deliberate warp to make pads 
> > >retract and not drag. Very different from auto think. Calipers "float" and 
> > >track the warp without problems.
>
> > ________________________________
> >  From: mongoose22p <[email protected]>
>
> > >To: Nighthawk Motorcycle Lovers! <[email protected]>
> > >Sent: Sun, February 7, 2010 2:36:20 PM
> > >Subject: [Nighthawk Lovers] stuck brake caliper 82 750
>
> > >yes i need some help with my bike the brake caliper on 750 82 it has
> > >30.000 miles and it chewed up my right side rotor pretty bad can they
> > >be turned like a car i dont know anything about it is it brake shoes
> > >that have it stuck previous owner must have rode it with it stuck to
> > >tear up rotor i have replacement i bought 2 on ebay should i change
> > >both rotors or just bad one should i change pads if so what kind
> > >should i get is caliper bad or just stuck what usually happens thanks
> > >steve
>
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