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5th May 2012
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Master Bike Builder
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Join Date: Aug 2008
Posts: 2,041 Sportster/Buell Model: 71 xlch Sportster/Buell Year: 73 Sportster/Buell Model #2: 74 xlh Sportster/Buell Year #2: 74 Other Motorcycle Model: BT rigid hand shift
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77 front disc pad shot off under hard breaking
was cranking through traffic today in Minneapolis.....yellow light caught me in a hard acceleration so I grabbed the front brake hard and POP, the inboard side pad popped off it's rivets and shot out in front of me...77 pie caliper.....obviously, I ran the light....first time for that. I had those pads pro-installed too at a local truck brake shop. Guess I should have used adhesive as well as the rivets. I think the pads were the high-end pads from Dennis Kirk as well...those kevlar ones.....I did not have time to go retrieve the pad and look at it to seee if it cracked. The rivets are still in the inboard mount so the pad pulled from the rivets.
guess this is a warning for me...slow down.
Last edited by Folkie; 15th August 2012 at 21:52..
Reason: Language
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5th May 2012
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Senior Chief Master Mechanic
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Join Date: Dec 2011
Location: under a roof
Posts: 986 Sportster/Buell Model: xlh 1000 Sportster/Buell Year: 1977 Sportster/Buell Model #2: XLCH 1000 Sportster/Buell Year #2: 1979
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Hope mine don't do that.
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5th May 2012
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Master Mechanic
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Join Date: Mar 2012
Location: Where ever i am.
Posts: 255 Sportster/Buell Model: Sportster Sportster/Buell Year: 1980 Sportster/Buell Model #2: Iron Head Sporty Sportster/Buell Year #2: 1980
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I hate yellow lights.
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5th May 2012
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Senior Master Custom Bike Builder
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Join Date: Dec 2007
Location: Australia
Posts: 7,862 Sportster/Buell Model: XLCH 1000 Sportster/Buell Year: 1977 Sportster/Buell Model #2: 75 motor in Norton frame. Other Motorcycle Model: 42WLA 45, Harton, Narley Other Motorcycle Year: 1942
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Wow, glad you survived. yeah I never trusted my life to those two rivets, got some brake lining material bonded on to mine.
Check out the surviving rivets, see if they over-flared them and cracked the rivets where they flare outwards.
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In theory there is no difference between theory and practice. In practice there is.
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5th May 2012
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Senior Master Custom Bike Builder
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Join Date: May 2010
Location: Pottstown PA.
Posts: 5,138 Sportster/Buell Model: xlch Sportster/Buell Year: 1960
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first time through a,red light?
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72 1000cc barrels and heads, s&s 41/2'' flywheels, sifton cams, s&s super B w/ zippers thunderjet w/yost powertube, andrews gears,and shafts, competition engineering kevlar wet or dry clutch, 72 oil pump, morris magneto w/auto advance and single fire module, cycle electric generator w/electronic regulator,73 cu.in.
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5th May 2012
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XL FORUM TEAM MEMBER
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Join Date: Jul 2010
Location: Booneville,Ms.
Posts: 2,055 Sportster/Buell Model: XLCH Sportster/Buell Year: 1974
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Did U bevel the leading edge of pad? I've seen pads from factory that with chucks of the pad missing on leading edge.Don't really know what causes this but if beveling helps I do it.
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Murphy's Law
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5th May 2012
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Senior Chief Know It All
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Join Date: Sep 2011
Posts: 807 Sportster/Buell Model: XLH1200 Sportster/Buell Year: 1991
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Sucks that the pad popped out in front of you but at least you didnt pop out in front of an SUV. Hope you get things sorted.
__________________
The difference between genius and stupidity is that genius has its limitations
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5th May 2012
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Senior Custom Bike Builder
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Join Date: Jul 2009
Location: SW. Pencilmania
Posts: 2,535 Sportster/Buell Model: chopper looking thing Sportster/Buell Year: 1978 Other Motorcycle Model: Triumph POS Other Motorcycle Year: 1972
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I had a Superglide that did that on a yearly basis. As a wake up call it is not all that agreeable.
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5th May 2012
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Senior Master Custom Bike Builder
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Join Date: Jun 2008
Location: Cornelius, OR
Posts: 3,990
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Yellow means throttle up.
If you don't, the guy behind you will rear end you!
I'm guessing the pad was loose for a while before it was rejected by the caliper....
__________________
Ryder Rick "If life doesn't kill me, nothing ever will."
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5th May 2012
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Master Bike Builder
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Join Date: Aug 2008
Posts: 2,041 Sportster/Buell Model: 71 xlch Sportster/Buell Year: 73 Sportster/Buell Model #2: 74 xlh Sportster/Buell Year #2: 74 Other Motorcycle Model: BT rigid hand shift
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well...I was doin near 50 in a 30 in the city and caught the yellow about 200 yards back and new I was in trouble...
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