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PostPosted: Wed Jun 27, 2012 3:16 pm 
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Joined: Mon May 07, 2007 1:06 pm
Posts: 197
Location: UK
Anyone had this issue, I cannot get one out for love nor money.

Should I put a tiny amount of grease on the Ti bolt to prevent this in the future?

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PostPosted: Wed Jun 27, 2012 3:55 pm 
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Joined: Sun Nov 14, 2010 10:25 pm
Posts: 482
try soaking it a couple of times in ammonia. also try "scaring" the bolt by tapping it. You could also try to heat up the hub a little as TI and Al will expand at different rates.
That's about all I can think of.

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Last edited by quattrings on Wed Jun 27, 2012 4:32 pm, edited 1 time in total.

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PostPosted: Wed Jun 27, 2012 4:02 pm 
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Posts: 438
Location: Canada
In the future you should use some copper anti seize. Grease will not work well in this situation.

Good luck they will be difficult to remove!

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PostPosted: Wed Jun 27, 2012 8:44 pm 
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Posts: 197
Location: UK
Tried heat to no avail, its bent my torq bit as well,

The disc may have to stya on forever!!!!

Dont fancy trying to drill that bolt!

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PostPosted: Wed Jun 27, 2012 9:13 pm 
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Joined: Sun Oct 13, 2002 3:51 pm
Posts: 232
Had a stuck rotor bolt in my rear pro II. Managed to drill it out without damaging the hub. Is this an option with titanium?


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PostPosted: Thu Jun 28, 2012 2:08 am 
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Joined: Fri Oct 14, 2011 4:36 am
Posts: 100
kingkongsfinger wrote:
Tried heat to no avail, its bent my torq bit as well,

The disc may have to stya on forever!!!!

Dont fancy trying to drill that bolt!

You could try removing the other 5 bolts. Have one person trying to loosen the torx bolt and have a 2nd person with two hands on the rotor turning it counter clockwise.


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PostPosted: Thu Jun 28, 2012 7:56 am 
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Joined: Wed Apr 16, 2008 7:43 am
Posts: 214
Location: Sapporo City, Hokkaido, Japan
:smartass: Yes, just remove the other bolts if you can and turn the rotor counterclockwise, it will also loosen the last bolt. This has happened to me last week and it worked.


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PostPosted: Thu Jun 28, 2012 7:07 pm 
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Location: Mountain View, California
Take a soldering iron and put the tip to the head of the titanium bolt. This will locally heat the Ti bolt without cooking your hub.

Then try the rotating rotor trick. Or if you have mangled the head too much to get a torx bit on, you can then try a left hand drill bit and start drilling the bolt out. Else cut a slit and use a flat head screw driver bit on a ratchet and see if you can undo it then.

For Ti rotor bolts, use loctite 243 or loctite 222 + loctite 7471 primer. The locitte will prevent galvanic corrosion and act as a secondary locking feature to prevent loosening. Remember to always torque to the recommend value. I prefer loctite over antiseize in this application.

Reason for loctite over antiseize.
http://www.hackracer.com/2012/03/part-2 ... ocker.html
http://www.hackracer.com/2012/02/part-1 ... icals.html

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PostPosted: Fri Jun 29, 2012 7:38 am 
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Posts: 197
Location: UK
Cheers! wrote:
Take a soldering iron and put the tip to the head of the titanium bolt. This will locally heat the Ti bolt without cooking your hub.

Then try the rotating rotor trick. Or if you have mangled the head too much to get a torx bit on, you can then try a left hand drill bit and start drilling the bolt out. Else cut a slit and use a flat head screw driver bit on a ratchet and see if you can undo it then.

For Ti rotor bolts, use loctite 243 or loctite 222 + loctite 7471 primer. The locitte will prevent galvanic corrosion and act as a secondary locking feature to prevent loosening. Remember to always torque to the recommend value. I prefer loctite over antiseize in this application.

Reason for loctite over antiseize.
http://www.hackracer.com/2012/03/part-2 ... ocker.html" onclick="window.open(this.href);return false;
http://www.hackracer.com/2012/02/part-1 ... icals.html" onclick="window.open(this.href);return false;


:thumbup:

_________________
"I could have done this job myself in five minutes, but as things turned out I had to spend two days trying to find out why it had taken someone else three weeks to do it wrong."


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PostPosted: Mon Jul 09, 2012 8:34 am 
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Joined: Thu Oct 13, 2011 5:25 pm
Posts: 169
The rotor spinning trick is a good one.

You can also rig up a torx head to a hand impact driver--these work excellent for types of things you think you'll have to drill. Use penetrating oil beforehand, as well as heat to break the loc-tite, if any remains.


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PostPosted: Mon Jul 09, 2012 2:26 pm 
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Joined: Mon Aug 16, 2010 6:43 pm
Posts: 438
Location: Canada
Cheers! wrote:
Take a soldering iron and put the tip to the head of the titanium bolt. This will locally heat the Ti bolt without cooking your hub.

Then try the rotating rotor trick. Or if you have mangled the head too much to get a torx bit on, you can then try a left hand drill bit and start drilling the bolt out. Else cut a slit and use a flat head screw driver bit on a ratchet and see if you can undo it then.

For Ti rotor bolts, use loctite 243 or loctite 222 + loctite 7471 primer. The locitte will prevent galvanic corrosion and act as a secondary locking feature to prevent loosening. Remember to always torque to the recommend value. I prefer loctite over antiseize in this application.

Reason for loctite over antiseize.
http://www.hackracer.com/2012/03/part-2 ... ocker.html" onclick="window.open(this.href);return false;
http://www.hackracer.com/2012/02/part-1 ... icals.html" onclick="window.open(this.href);return false;



I was kind of hoping these links were more than just your personal blogspam.

It is great you are an aerospace engineer and you can find similarities between your work and your hobby, work in a bike shop for a season and you will find uses for red Loctite

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