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PostPosted: Mon Jul 03, 2017 1:11 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
Posts: 14834
Location: Surrey
I dusted off a bike the other day and took it for a spin. Noticed play in the brakes and thought I had the dreaded hope floating rotor issue. On closer inspection I found that the rotor bolts were loose. Odd, as they were tightened properly and used only once on a ride for a couple of hours.

What's the best way to ensure they stay tight?

Another of issue when inspecting was that there seemed to be a lot of liquid in between the rotor and hub. As the bike hadn't been ridden for at least 6 months and has been dry stored, I'm at a loss to explain that. Any ideas?


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PostPosted: Mon Jul 03, 2017 9:20 pm 
Old School Grand Master

Joined: Mon Feb 11, 2008 9:42 am
Posts: 3114
Ti bolts may have galled their way into the threaded hole in the hub. Feel tight, not enough end load though, soon as you start riding, the disc moves and the bolts start to back off.

Copper slip (or anti galling paste of choice).

Or maybe you didn't tighten them properly.

Liquid between disc and hub, no idea. Condensation behind incorrectly torqued bolts? Capillary action with your disc moving?

FWIW, i'd rather use three steel bolts than 6 titanium! (and i'd need at least 12 bolts to consider aluminium!)


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 Post subject: Re:
PostPosted: Mon Jul 03, 2017 10:54 pm 
Gold Trader
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Location: Surrey
Cheers, they were tightened down and copper slip was used. Most bolts come with loctite on the ends (or equivalent). Maybe I need to invest in some, or get some steel bolts. As bling as titanium is, a fair amount of stress goes into braking, and I don't want anything breaking.


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PostPosted: Tue Jul 04, 2017 4:08 pm 
Retro Guru

Joined: Thu Jul 19, 2012 8:43 am
Posts: 251
Location: North East
Dab of blue loctite and 24hrs to cure should be good.


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 Post subject: Re:
PostPosted: Sat Jul 08, 2017 10:42 pm 
retrobike rider
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Joined: Wed Mar 03, 2010 11:59 am
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I have Ti bolts in my rotors and would trust them more than steel or alloy! Call it bedding in...if you have to tighten them after every ride then I would worry...


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 Post subject: Re:
PostPosted: Sat Jul 08, 2017 11:44 pm 
Gold Trader
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Joined: Fri Jan 23, 2009 2:30 pm
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Location: Surrey
Took them for a brief spin today and they are still tight. I'll keep an eye on them as I may be using the bike more over the summer. If they keep coming loose, then I'll dab some blue loctite on them.


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 Post subject: Re:
PostPosted: Mon Jul 24, 2017 5:07 am 
Retro Guru

Joined: Sun Oct 26, 2014 8:34 am
Posts: 566
Ti bolts are easily strong enough. I am a super clyde with 203mm rotors and have had no problems whatsoever
Kes


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