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Thread: Rotor Bolts

  1. #11
    2 YEAR PREMIER MEMBER Flyingscotsman's Avatar
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    Re: Rotor Bolts

    I had a smilar issue with mine when I changed rotors. Turned out to be old threadlock in the hole that hadn't been cleaned out first time.

    I didnt use any heat - if you have don the threadlock may be baked on, but should cut away with a thread tap.

    As Paul says it is is important to tighten all bolts equally as you fit.

    Very easy to chew the heads on these bolts.
    Last edited by Flyingscotsman; 14th May 2021 at 07:37 AM.

  2. #12
    2 YEAR PREMIER MEMBER RickS1K's Avatar
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    Re: Rotor Bolts

    Thanks for the thoughts gents. I was able to locate and hand tighten both old and new bolts into 9 of the 10 holes. I had already confirmed that the new bolts had the same length/pitch/width as the old ones. I went looking for thread lock stuck in the holes in the morning light. However, what I actually found was that the screw only goes in at an angle because there appears to be damage near the top of the wheel thread - I didn't notice that with all the bushes and disc in the way last night. Not sure how it got the damage, but hey... Whilst I would normally look forward to learning something new and tapping it myself, I've spent a lot of time and money on new tools over the winter and now that we have the opportunity to use our bikes more I just wanted it done. Lazy or what :-)

    So I called my local garage, and they recommended a local engineering company, who said they could do it today... so they have the wheel. Just waiting on them calling to say it's done.

  3. #13
    LIFETIME FORUM MEMBER stuartb's Avatar
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    Re: Rotor Bolts

    Good advice from the guys and worth noting for the next person...cutting or cleaning up a thread in a blind hole correctly requires a bottoming tap...there is a difference if you look closely..

    You can buy these on an individual basis or as a set like mine..not expensive but covers what an average bike owner would need and are indispensable in my opinion...

    A thread Gauge is also essential, Pro Bolts is OK but a set like this is better when your eyesight is crap like mine..

    32 quid sorts 95% of the likely problems most of us will encounter..

    To put things into perspective a really good quality set of engineering taps and dies in high speed from the likes of Presto or Faithfull will set you back at least a grand, most of the cheap ones will be Carbon Steel and not HSS .

    https://www.amazon.co.uk/dp/B01M4JUT...X7320VSP8NPNKR

    Sent from my SM-G998B using Tapatalk
    Last edited by stuartb; 14th May 2021 at 06:50 PM.

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  5. #14
    2 YEAR PREMIER MEMBER RickS1K's Avatar
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    Re: Rotor Bolts

    On another day I might have spent that £32 and spent the rainy weekend working out how to use them. As it was it only cost a fiver to have the damage by someone who actually knew what they were doing (Cranford Engineering, Ashtead). They describe themselves as a machine shop if you need to google something in your area.

    Best of all, there was a chippy near the shop that did a cracking bag of chips. Of course, that all meant that by Friday I had the bike back together - just in time to be unusable cos of the torrential rain we had all weekend.... que sera

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