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scratched disc on z1a?

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mick znone
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scratched disc on z1a?

#1 PostAuthor: mick znone » Sun May 31, 2009 12:16 pm

mot time again this week, my front disc seems to have developed a scratch in the centre, the pad is grooved on the same spot. any ideas what could have caused this?the scratch is on the piston side. the clip that holds the disc in place is not scratched, so it cant be that.
I DONT CARE, IN OR OUT BUT IM ENJOYING THE DEBATE......................ARMSTRONG MT500. a pushbike, waves.....addict, no offence
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Garn 1
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#2 PostAuthor: Garn 1 » Sun May 31, 2009 1:08 pm

The scratch you refer to, is usually caused by the lower mounting bolt being too long, or the lower mounting bolt spring washer & /or washer being left off. Investigate and see if the scratch lines up with the above mentioned bolt.
RegardZ.
Garn (Sydney) Z1, Z1A, Z1B and Z900-A4
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mick znone
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#3 PostAuthor: mick znone » Sun May 31, 2009 2:24 pm

thanks Garn, spot on mate, went straight out to check, sure enough, id over tightened the lower bolt, it was catching the disc. Ive ground down the bolt a bit and put an extra washer in. i am terrible for overzealousness with things. now i have to get some emery cloth on the disc :roll: :oops:
I DONT CARE, IN OR OUT BUT IM ENJOYING THE DEBATE......................ARMSTRONG MT500. a pushbike, waves.....addict, no offence
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floydsz1
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#4 PostAuthor: floydsz1 » Sun May 31, 2009 8:04 pm

I have a scratch on mine, it was there when i bought the bike a couple off years ago. One day ill sort the disc, the bolts ok though
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mick znone
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#5 PostAuthor: mick znone » Sun May 31, 2009 8:12 pm

i will probably get it skimmed this winter. silly me :oops:
I DONT CARE, IN OR OUT BUT IM ENJOYING THE DEBATE......................ARMSTRONG MT500. a pushbike, waves.....addict, no offence
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tlc
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#6 PostAuthor: tlc » Sun May 31, 2009 8:15 pm

Mick. You`ll find that you can`t skim a stainless disc because they chatter.

You will have to get it surface ground if it really is that bad.
Asphalt Cowboy

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mick znone
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#7 PostAuthor: mick znone » Sun May 31, 2009 9:02 pm

surface ground :?:
I DONT CARE, IN OR OUT BUT IM ENJOYING THE DEBATE......................ARMSTRONG MT500. a pushbike, waves.....addict, no offence
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