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 Post subject: Ultra Torque L/H thread
PostPosted: Tue Jul 25, 2017 1:03 am 
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Joined: Tue Mar 18, 2014 10:13 pm
Posts: 456
Location: Great Southern Land
About to commence my new build with a Campy SR crank set. The spindle is held with the L/H threaded bolt. I have both a 3/8 & 1/2 inch torque wrenches but I don't believe either will measure L/H CCW torque. What is the consensuses, do I need to find a specific TW or just do it up tight is good enough? Perhaps with thread locker.......... Never done Campy before but decided I wanted to try it out........ help please

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 Post subject: Ultra Torque L/H thread
Posted: Tue Jul 25, 2017 1:03 am 


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PostPosted: Tue Jul 25, 2017 1:13 am 
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I've always done it by hand without a torque wrench and have never had one come loose. I also grease the bolt.

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PostPosted: Tue Jul 25, 2017 1:16 am 
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Location: Great Southern Land
Thanks, hoped that woyuld be the way to go and just don't get crazy tightening it up.......... this will be an interesting adventure [for me that is] Hope I like Campy after all this

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PostPosted: Tue Jul 25, 2017 1:19 am 
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It's a pretty stout bolt. It's not like you could strip it with hand tools. I use the 10mm key on an extension with a standard 3/8" ratchet. I feel like I tighten it just like I would have done a crank bolt back in the day before there was a torque spec for everything.

You could always tighten some other bolt to the recommended torque so that you get a feel for the amount of pressure to use.

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PostPosted: Tue Jul 25, 2017 1:42 am 
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50Nm is quite a lot. I always do it with both wheels on and firmly planted on the ground versus trying to crank 50Nm while held in a stand. I do not grease the bolt but I do lightly grease both sides of the washer at the bolt head. I do use loctite 222 (purple) on the threads of the bolt.

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Colnago C60 - PR99
C59 Five Years Later
My Special Colnago EPQ
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PostPosted: Tue Jul 25, 2017 1:58 am 
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Location: Great Southern Land
ok, i'd be worried about pulling/galling the thread in the spindle being titanium........

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PostPosted: Tue Jul 25, 2017 3:12 am 
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Joined: Fri Feb 18, 2005 6:50 pm
Posts: 211
Location: Wilmington, DE
If you have a clicker type torque wrench with a reversible ratchet it will work for left hand threads.


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PostPosted: Tue Jul 25, 2017 3:18 am 
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Location: Great Southern Land
I also have 2 reversible/clicker wrenches but I don't believe they "measure" torque CCW...........

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PostPosted: Tue Jul 25, 2017 4:00 am 
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Location: eh?
SR is titanium is it not? Do you want anti-seize on the bolt instead of grease? I heard a mechanic mention something about that once (but I just have record so I don't know for sure what the correct prep for SR is). Worth a check though before you install.

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PostPosted: Tue Jul 25, 2017 4:01 am 
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Location: Wilmington, DE
beanbiken wrote:
I also have 2 reversible/clicker wrenches but I don't believe they "measure" torque CCW...........

BB


Try it. You might be surprised to find that they do.


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PostPosted: Tue Jul 25, 2017 4:12 am 
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Location: Great Southern Land
joejack951 wrote:
beanbiken wrote:
I also have 2 reversible/clicker wrenches but I don't believe they "measure" torque CCW...........

BB


Try it. You might be surprised to find that they do.


Will do........

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PostPosted: Tue Jul 25, 2017 4:43 am 
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Mr.Gib wrote:
SR is titanium is it not? Do you want anti-seize on the bolt instead of grease? I heard a mechanic mention something about that once (but I just have record so I don't know for sure what the correct prep for SR is). Worth a check though before you install.
That's a good point and it is one of the reasons I use Loctite 222, to have something between the two titanium surfaces plus it secures it just a little bit more as well. Campy's instructions specifically say that to prevent long term oxidation, to use only Loctite 222 on this bolt. If you're going to use something other than Loctite 222, I would use a copper based antieseize before grease. But really it probably isn't going to make a whole lot of difference unless you left it in there unserviced for years and through some good wet winters. The only thing with using Loctite 222 is that once removed it is a good idea to take an awl to the threads to really remove any residual dried Loctite before reinstalling again.

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Colnago C60 - PR99
C59 Five Years Later
My Special Colnago EPQ
Trek Emonda SL Campagnolo SR


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PostPosted: Tue Jul 25, 2017 4:51 am 
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Location: Great Southern Land
Zinc base anti seize ok?? but that no reaction with Ti?

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PostPosted: Tue Jul 25, 2017 8:40 am 
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Location: bottom edge of Australia
I've fitted half a dozen UT cups+cranks to my bikes in the past using both grease and Loctite 222 methods on the hirth bolt. I've also used a TR to 40Nm and alternatively a small hand tool T extension fitted to the Campy BB cup tool to fit the cups to the bikes and torqued by hand as tight as . I've never had a squeak or a loose thread anywhere on any UT stuff.

I love UT...........


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PostPosted: Tue Jul 25, 2017 9:57 am 
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Posts: 211
Location: Wilmington, DE
beanbiken wrote:
Zinc base anti seize ok?? but that no reaction with Ti?


I bought a Stronglight Fission crankset with titanium axle back in the day. It came with copper anti-sieze so I am inclined to think zinc-based anti-sieze is a no-no. Any auto parts store ought to have some small packets of the copper stuff available as it is supplied that way for replacement oxygen sensors. I may even have an extra one I could send you.


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Posted: Tue Jul 25, 2017 9:57 am 


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