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Praxis M30 BB Creak - Loctite or Grease?

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Praxis M30 BB Creak - Loctite or Grease?

Old 10-28-20, 09:58 AM
  #1  
twowheeldesign
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Praxis M30 BB Creak - Loctite or Grease?

I have put ~3500 miles on my Praxis M30 Threaded Bottom Bracket, and it just recently developed a slight creak. I have done my due diligence and cleaned/checked the cranks, chainring, seatpost, headset, etc, and I am fairly confident it is coming from the BB.

From quick research online, it sounds like some people use Loctite on the threads of the BB into the frame. The Praxis instructions just say "Antiseize or grease" https://praxiscycles.com/wp-content/...0_BSA_REVB.pdf

I lost my anti-seize in a recent move, so I will be buying something to remedy this anyways, so thought I would ask for recommendations.

Does anyone have a favorite anti-seize or grease for threaded BB installation? Or should I be using Loctite 609?

Thanks in advance for any help!
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Old 10-28-20, 10:09 AM
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trailangel
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Phil Wood recommends blue threadlocker. They even give you a small amount when you buy their threaded BBs.
If you rebuild yearly... like if you are riding a "wet bike" ... maybe just grease.
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Old 10-28-20, 01:40 PM
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My preferred antiseize is Tef-Gel. It is specifically designed to minimize electrolytic corrosion on dissimilar metal joints: https://www.tefgel.com/contain.php?param=tefgel_infor
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Old 10-28-20, 03:18 PM
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Originally Posted by dsbrantjr
My preferred antiseize is Tef-Gel. It is specifically designed to minimize electrolytic corrosion on dissimilar metal joints: https://www.tefgel.com/contain.php?param=tefgel_infor
Interesting, that looks like it would work well - just curious, have you noticed that the Tef-Gel lasts any longer or shorter than standard grease or antiseize?
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Old 10-28-20, 03:38 PM
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When I replaced my Praxis bearings M30 threaded, they were creaking as well. I talked to Praxis and they were very much NOT on board with thread locker or such. They "highly" recommended anti-seize compound. I went to a copper paste version and it was much better.

I am sure thread lock will work fine though, lots of people do it. Each has its benifits but a good anti-seize should sold your problem...make sure its also torqued properly.

Good luck!
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Old 10-28-20, 03:40 PM
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Originally Posted by twowheeldesign
Interesting, that looks like it would work well - just curious, have you noticed that the Tef-Gel lasts any longer or shorter than standard grease or antiseize?
It typically lasts until I take the joint apart again.
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Old 10-28-20, 04:08 PM
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Originally Posted by sdmc530
I went to a copper paste version and it was much better.
The issue with metal-based antiseizes, formulated for high-temperature service like auto exhaust systems, , is that in an electrolytic corrosion environment it introduces an additional metal into the mix.
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Old 10-28-20, 04:09 PM
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Originally Posted by twowheeldesign
I have put ~3500 miles on my Praxis M30 Threaded Bottom Bracket, and it just recently developed a slight creak. I have done my due diligence and cleaned/checked the cranks, chainring, seatpost, headset, etc, and I am fairly confident it is coming from the BB.

From quick research online, it sounds like some people use Loctite on the threads of the BB into the frame. The Praxis instructions just say "Antiseize or grease" https://praxiscycles.com/wp-content/...0_BSA_REVB.pdf

I lost my anti-seize in a recent move, so I will be buying something to remedy this anyways, so thought I would ask for recommendations.

Does anyone have a favorite anti-seize or grease for threaded BB installation? Or should I be using Loctite 609?

Thanks in advance for any help!
I don't feel like different thread prep is likely to help. Probably the best thing to do is get the bb shell faced and chased to improve the alignment of the bearings. A new BB is also not a bad idea.
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Old 10-29-20, 07:35 AM
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Thanks everyone for the input and help, I am going to try antiseize first, and if that doesn't last long, I'll try the loctite and then replace the BB if needed!
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Old 10-29-20, 11:20 AM
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Originally Posted by twowheeldesign
Interesting, that looks like it would work well - just curious, have you noticed that the Tef-Gel lasts any longer or shorter than standard grease or antiseize?
Tef-Gel is good stuff. It is a PTFE based paste primarily used to prevent corrosion, galling, and seizing of hardware in corrosive environments and between dissimilar metals I use it on my sailboat anywhere that stainless comes into contact with aluminum as it prevents the galvanic corrosion that often occurs at those joints. I think it is better than grease on threaded joints. It is not a thread locker though so don't confuse it with Loctite blue or red. It is also not a grease for bearings.

On sailboats, there are a lot of places where stainless threaded fasteners are screwed into aluminum. I've removed fasteners that have been in place for 5 years or more, and find the Tef-Gel is still there and still in paste form even though you only use a very thin film on the threads.
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Old 10-29-20, 01:47 PM
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I don't like using antiseize on bikes as the stuff get's too messy if not careful with the application. I have to look into Tef-Gel if it's a cleaner solution.
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