Steel or Titanium Disc Brake Caliper Fixing Bolts?
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I also use ti bolts on my mtb bikes with no problems.
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Ti bolts are fine
some use 3 ti and 3 ALU
I use teflon plumbers tape for just about any threaded application - serves both purposes, anti sieze and thread locker. Does not attract dirt like grease. Does not displace.
some use 3 ti and 3 ALU
I use teflon plumbers tape for just about any threaded application - serves both purposes, anti sieze and thread locker. Does not attract dirt like grease. Does not displace.
titanium specific threadlocker:
LOCTITE 2432 is a blue, liquid, 1-part, medium viscosity, thixotropic dimethacrylate ester acrylic threadlocker with medium strength. It is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. It was especially developed for use on sensitive metals, like titanium, used in the nuclear industry.
LOCTITE 5772 is a medium strength, methacrylate-based thread sealant well suited to the locking and sealing of metal threaded pipes and fittings up to 3" in diameter. With PMUC approval, the product has low halogen and sulphur content and is designed for use in the nuclear industry on sensitive metals such as titanium.
LOCTITE 6482 is a green, low-viscosity, urethane methacrylate, acrylic, retaining compound which has a low halogen and sulphur content and was especially developed for use in the nuclear industry. The product is for bonding cylindrical fitting parts, particularly where strength at elevated temperatures is required. Applications include holding gears and sprockets on to gearbox shafts, and rotors on electric motor shafts. Suits sensitive metals such as titanium.
LOCTITE 2432 is a blue, liquid, 1-part, medium viscosity, thixotropic dimethacrylate ester acrylic threadlocker with medium strength. It is designed for the locking and sealing of threaded fasteners which require normal disassembly with standard hand tools. It was especially developed for use on sensitive metals, like titanium, used in the nuclear industry.
LOCTITE 5772 is a medium strength, methacrylate-based thread sealant well suited to the locking and sealing of metal threaded pipes and fittings up to 3" in diameter. With PMUC approval, the product has low halogen and sulphur content and is designed for use in the nuclear industry on sensitive metals such as titanium.
LOCTITE 6482 is a green, low-viscosity, urethane methacrylate, acrylic, retaining compound which has a low halogen and sulphur content and was especially developed for use in the nuclear industry. The product is for bonding cylindrical fitting parts, particularly where strength at elevated temperatures is required. Applications include holding gears and sprockets on to gearbox shafts, and rotors on electric motor shafts. Suits sensitive metals such as titanium.
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Some amazon comments suggest this for Loctitte 243/242 (regular blue threadlocker):
If you use this on aluminum, stainless steel, magnesium, titanium or some other inactive metal, you should also use primer ("Klean 'n Prime").
LOCTITE Klean 'N Prime Anaerobic Activator
Permatex Surface Prep Activator for Anaerobics
What you think about smaller bottle cage bolts? Titanium + low strength (purple) threadlocker ? Alloy + low strength (purple) threadlocker ?
If you use this on aluminum, stainless steel, magnesium, titanium or some other inactive metal, you should also use primer ("Klean 'n Prime").
LOCTITE Klean 'N Prime Anaerobic Activator
Permatex Surface Prep Activator for Anaerobics
What you think about smaller bottle cage bolts? Titanium + low strength (purple) threadlocker ? Alloy + low strength (purple) threadlocker ?
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Nitpick: galling is only a problem when threading stainless fasteners into stainless threads or Ti fasteners into Ti threads. Most caliper mount threads are either aluminum or brass, so both stainless and Ti (grade 5, AKA 6/4) are fine for caliper bolts.
Non-nitpick: it's absolutely false that "stainless is not a good option for loaded applications" or that stainless is "not good in fatigue." JoeC, I have no idea why you're claiming otherwise. Can you cite a source?
Many stainless alloys' fatigue properties are as good or better than those of carbon steel. Fatigue is a major design consideration for spokes, and spokes are overwhelmingly stainless. And nearly all OEM caliper bolts are stainless steel.