Do I need torq bolts of my disc rotors?

[berrywise]

I have to admit my wrenching knowledge is slowly becoming outdate since I haven't worked in a shop for awhile. I just got another frame and am building it up and I realized the disc brakes I got used don't have any mounting hardware.

I've got a whole bunch of metric cap head hex bolts that I could use but from all the disc setups I've worked on they used torq bolts.

What's the scoop?

[Magic]

I'd say you can use what you have at hand. Yea safety torq's would be nice but not required. I just put a little thread lock on them and not worry.

[danger!]

Be sure to post a pic when you get that bad boy built up. :D

[Kosk]

I think they use torx over a 3mm or 4mm hex because the hex is easier to strip out. With the amount of thread-lock and torque usually used on rotor bolts, it can be common for this to happen unless the bolt is a higher quality steel. Torx are generally lower in profile too if I recall, sometimes an issue with caliper clearance.

[berrywise]

Be sure to post a pic when you get that bad boy built up. :D

When? I already got it built up :D Well at least I got the wheels, fork, and stem bar setup already.

[danger!]

When? I already got it built up :D Well at least I got the wheels, fork, and stem bar setup already.

I figured as much! :D

[Standard]

Torx bolts were first introduced so people would have to have the right tools before working on whatever the bolts were holding together..

They use them on disc rotors because they don't strip out as easily as button-head allens. The low-profile head is needed for clearance with the frame and fork. You can sometimes get away with cap-head bolts on the rear wheel, but usually not on the front.

[soupboy]

Save weight - weld the rotor to the hub body.

[danger!]

A beed of welding wire probably weighs as much as 6 torx button head screws.

[berrywise]

Torx bolts were first introduced so people would have to have the right tools before working on whatever the bolts were holding together..

They use them on disc rotors because they don't strip out as easily as button-head allens. The low-profile head is needed for clearance with the frame and fork. You can sometimes get away with cap-head bolts on the rear wheel, but usually not on the front.

Yep I figured that out after mounting them to the wheel and putting the front wheel on the bike. Of course before doing that I had to mount the rotors on backwards so I had to take them off put them back on then discover they didn't fit :D

[Beau]

I only use button head allens with a dash of red lock tite. I hate torq bolts.

[soupboy]

I respectfully call BS, as ridiculous as my idea may be.

A beed of welding wire probably weighs as much as 6 torx button head screws.

[Beau]

I respectfully call BS, as ridiculous as my idea may be.

He was kidding! DUH. :scream:

Plus, pretty much every disk hub is made of aluminum. If you have ever tried to weld aluminum to steel you'll know why this is funny. Alsi it would be a real pain to change them once they bend or wear out.

FWIW, I use rotors for some of my artwork and it's a bitch to weld rotors to regular steel. The rotors don't heat up half as fast as carbon steel and it's tough to get a weld to stick.

[soupboy]

Really, steel and Al don't mate up properly under welding? :eyeroll: I was kiddin! DUH-ER. :banana:

Besides, I wasn't referring to what could be welded, but the weight of the bead vs. torq bolts.

He was kidding! DUH. :scream:

Plus, pretty much every disk hub is made of aluminum. If you have ever tried to weld aluminum to steel you'll know why this is funny. Alsi it would be a real pain to change them once they bend or wear out.

FWIW, I use rotors for some of my artwork and it's a bitch to weld rotors to regular steel. The rotors don't heat up half as fast as carbon steel and it's tough to get a weld to stick.