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Where to find Ti hardware for BB7

Old 09-22-17, 07:39 PM
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Chili Cheesy
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Where to find Ti hardware for BB7

So, my post mount bolts and caliper mount bolts for my BB7 brakes are getting rusty now... And I want to replace them with titanium or even stainless if I can't find Ti, but I can't seem to find a kit with just what I need. I've found rotor bolts and that's it.

If I just have to figure out exactly what kind of bolt they each are, meaning whatever weird combination of letters and numbers each bolt is referred to as, I guess I'll need pointed in the right direction to figure that all out too.
I'm hoping someone knows where I can find the hardware all together somewhere on the interwebs...

Thanks for reading. (:
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Old 09-22-17, 09:30 PM
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From what I've seen specialized titanium bolts are usually for racing components & it would be unlikely to find ones custom-made for BB7 brakes which are not esp light anyway. I'd assume it's cheaper & easier just to buy stock Avid replacement bolts. Last year I searched about stainless-steel rack/fender bolts & surprisingly little info about even that. Apparently most riders are happy enough with the cheap hardware store bolts that cost almost nothing to replace after a couple of years.
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Old 09-22-17, 09:52 PM
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The bolts are standard metric, nothing special about them. You need M6 socket head bolts. Measure the length of the bolts you have now to get the exact bolt you need. Stainless steel and Titanium M6 socket head bolts are easy to find on amazon.

Last edited by gerryl; 09-22-17 at 10:37 PM.
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Old 09-23-17, 04:41 AM
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Every hardware store in my community has a nice selection of stainless steel metric bolts, nuts and washers. As noted above, you could measure your old ones or you could just bring your old ones with you to make sure you get the right ones.

When I say hardware store, I mean stores like Ace Hardware or True Value Hardware, they will sell you one bolt if you only want to buy one. Stores like Home Depot, they are more likely to want to sell you 20 bolts instead of one.

Most brake bolts come with a spot of blue stuff on the threads, that is some form of threadlocker intended to make sure they do not vibrate loose and unthread while you ride leaving you going down a hill with no brakes. You can buy blue loctite or one of their competitors products, put a drop or two on the threads when you first install them. The label on the threadlocker package should say that the bolt is removable later, not for permanent installation.

I would not want Ti bolts, stainless steel is stronger and I want strong bolts on my brakes.
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Old 09-23-17, 05:31 AM
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Originally Posted by Chili Cheesy View Post
So, my post mount bolts and caliper mount bolts for my BB7 brakes are getting rusty now... And I want to replace them with titanium or even stainless if I can't find Ti, but I can't seem to find a kit with just what I need. I've found rotor bolts and that's it.

If I just have to figure out exactly what kind of bolt they each are, meaning whatever weird combination of letters and numbers each bolt is referred to as, I guess I'll need pointed in the right direction to figure that all out too.
I'm hoping someone knows where I can find the hardware all together somewhere on the interwebs...

Thanks for reading. (:
NOOOO!

Don't use titanium or stainless steel bolts as caliper mounting bolts! They DO NOT have the strength for it and you risk a critical failure in your most critical safety device!

Manufacturers ship their disc calipers with the toughest bolts our there, namely category 8 steel bolts or catergory 12.9 steel bolts. These bolts are alloyed carbon steel with very high tensile strength but most importantly a very high shear strength to match since alloyed carbon steel is tough in all directions. Shear strenght is the most important factor in the brake caliper bolts since that is the primary stress type these bolts are going to be experiencing.

Stainless steel bolts on the other hand have relatively low tensile strenght, lower even than 8.8 grade steel bolts, which are the lowest grade I would mount on disc brakes... actually, no, I'd use 10.9 minimum (higher is better) but the area where stainless steel bolts really suuuuck is shear strength. They are simply very bad at shear strenght applications due to lack of toughness.

Titanium on the other hand has relatively good tensile strength but depending on the alloy it may have a really good shear strength or really bad shear strength. You'll need a lot of research and it may be difficult to find the correct alloy bolts in the size and style you want.

It would just be much easier to grease the steel bolts. Then you'd be taking no risks and there would also be no rust problem
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Old 09-23-17, 05:52 AM
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bike shop got 'em.
go get 'em.
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Old 09-23-17, 09:12 AM
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Originally Posted by elcruxio View Post
NOOOO!

Don't use titanium or stainless steel bolts as caliper mounting bolts! They DO NOT have the strength for it and you risk a critical failure in your most critical safety device!

Manufacturers ship their disc calipers with the toughest bolts our there, namely category 8 steel bolts or catergory 12.9 steel bolts. ...
If you buy steel bolts to replace the original equipment bolts, make sure you coat the threads with something that will prevent dissimilar metal corrosion if they are not painted or otherwise coated. A lot of brake hardware that you would thread such bolts into is aluminum alloy.
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Old 09-23-17, 09:52 AM
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Originally Posted by Tourist in MSN View Post
If you buy steel bolts to replace the original equipment bolts, make sure you coat the threads with something that will prevent dissimilar metal corrosion if they are not painted or otherwise coated. A lot of brake hardware that you would thread such bolts into is aluminum alloy.
Good point. A good thread locking compound is usually appropriate for this kind of use
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Old 09-24-17, 03:25 PM
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Titanium Bolts, Titanium Bolt, Titanium Fasteners, Ti Bolts
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Old 09-24-17, 04:19 PM
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Honestly why would you bother on BB7's ??
Do yourself a favour and buy some TRP Spyre's which are a much better brake if you want 100% mechanical.
TRP HY/RD are even better still
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Old 09-24-17, 05:27 PM
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Avid parts are stocked by the big distributor QBP, that sells through your LBS, with a QBP Account.



Rust the only problem? remove it from the surface, then paint the pieces with lacquer, nail polish or any color of paint.






...

Last edited by fietsbob; 10-04-17 at 11:20 AM.
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Old 09-25-17, 12:08 PM
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Pro-Ti would be what I would go for if I was looking at Ti as they are one of the few fully forged ti bolts on the market which leads to them being stronger than the cheaper machined stuff a lot of folks sell. You could also go for the BB7SL which has some ti hardware or go to the TRP Spyre which is lighter (cheaper too) and dual piston which is better atmo.

If you just want SS your shop should be able to get you some.
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Old 10-04-17, 12:16 AM
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Originally Posted by DropBarFan View Post
...it's cheaper & easier just to buy stock Avid replacement bolts.
Money isn't an issue for me on this. I want to get my bike to the point where there's nothing that can rust... and I'm pretty sure after I replace this hardware it'll be there. Granted, the Surly frame is steel, but I have it stripped down to just the frame now and am getting ready to coat the inside with Frame Saver. I'm going to have this bike in salty, wet coastal places.

Originally Posted by gerryl View Post
The bolts are standard metric, nothing special about them. You need M6 socket head bolts. Measure the length of the bolts you have now to get the exact bolt you need. Stainless steel and Titanium M6 socket head bolts are easy to find on amazon.
Thank you, gerryl. This was really helpful when I continued to search online!

Originally Posted by Tourist in MSN View Post
...hardware store...

Most brake bolts come with a spot of blue stuff on the threads...
The hardware stores near me don't have 'em. I checked a few days ago.
...And I have Loctite. I'm all about it. (:

Originally Posted by elcruxio View Post
NOOOO!

Don't use titanium or stainless steel bolts as caliper mounting bolts!...

...Titanium on the other hand has relatively good tensile strength but depending on the alloy it may have a really good shear strength or really bad shear strength. You'll need a lot of research and it may be difficult to find the correct alloy bolts in the size and style you want.
I've found some on aliexpress.com made by a brand called RISK. I found every size I need. Do you think these may have acceptable "shear strength"?
Here's the link while it lasts:
https://www.aliexpress.com/item/4pcs...6-38684814efcb



Originally Posted by saddlesores View Post
bike shop got 'em.
go get 'em.
Nope... Checked.
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Old 10-04-17, 12:54 AM
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Originally Posted by geoffs View Post
Honestly why would you bother on BB7's ??
Do yourself a favour and buy some TRP Spyre's which are a much better brake...
Let's agree to disagree. I had BB7 Mountain calipers at first, but hated the terribly limited drop lever availability for them. I bought TRP Spyres and some better road levers and quickly ended up selling them and getting the BB7 Roads. They are simpler, more robust (less moving parts) and easier for me to dial in the way I want, with no noise. The CPS washers are the best part. They allow the caliper to line up perfectly with the rotor no matter what. The Spyres line up perfectly with your mounts, which translates to any minor imperfection in how square your mounts are causing (to some degree) an imperfection in caliper alignment. This is why pro cyclocross riders have gone back to the BB7 Road over and over.
To each his own. =)
There are several other little nit-picky reasons I will always prefer the BB7. Spyres are Awesome and if they were my only option, I would still be totally happy.

Originally Posted by fietsbob View Post
Rust the only problem?...
Have you ever seen what the beach does to steel, and how quickly? It is impressive. Standard steel anything that's exposed is dooooooooooomed.

Originally Posted by veganbikes View Post
Pro-Ti would be what I would go for if I was looking at Ti as they are one of the few fully forged ti bolts on the market...
This is an awesome pointer! There's a problem though... It seems their bolts are all T30 Torx heads. That may be a common motorcycle tool, but I don't want yet another tool I have to carry on long tours just so I can have Ti hardware on my brakes. I want 5mm allen key or atleast T25 Torx since there are already some of that size on my bike.

I bet the RISK bolts that I mentioned above would be just fine.

I'm curious though... Has anyone ever heard of that brand?
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Old 10-04-17, 09:25 AM
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If your local Ace hardware doesn't have stainless metric bolts, try Fastenal. Their stores vary; some will sell you single bolts, while others are more like Lowes or Home Depot and want to sell you a bag of six.
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Old 10-04-17, 09:38 AM
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I believe the standard bolt size for the ones that mount the caliper are - M6 x 18mm.
Dead easy to find, especially in stainless or Ti.
I replaced all my bolts with stainless ones, never had a problem with them. Lot of companies stick stainless bolts in their high-end products eg. stems, pannier fastening kits etc.
Wouldn't bother with Ti, I've stripped a few in my time and never bothered going back. Did work out about 40% weight loss with Ti, but just don't trust them anymore.
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Old 10-04-17, 09:40 PM
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Originally Posted by Chili Cheesy View Post
Money isn't an issue for me on this. I want to get my bike to the point where there's nothing that can rust... and I'm pretty sure after I replace this hardware it'll be there. Granted, the Surly frame is steel, but I have it stripped down to just the frame now and am getting ready to coat the inside with Frame Saver. I'm going to have this bike in salty, wet coastal places.
I haven't lived in a salty coastal area, I suppose bolts could rust even if well-greased. Ti bolts aren't a major expense but I'd worry about rounding out the wrench surfaces. Still an interesting experiment--I'd like to see touring bikes with more Ti stuff like hub & BB axles.
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