[yellowfox]

So i just got a set of 24" arrow racing DHX rims laced to a hope sport hub in the back and a hope bulb hub in the front. Well i went to mount my hayes rotor to them and guess what?! the stinkin bolts are to long. the hubs aren't tapped all the way through. No biggie right? wrong.... i go to the bike shop today and they can only order them. go to sears hardware and all they have in m5 size is an allenhead in 12.9 grade or something. I bought some of em but i don't think i want to use them. I also got a couple m5 nuts to screw on the old bolts, cut em down with the dremel then back the nut off to clear the threads, but i don't get out of work until 5 and by the time i cut down 12 bolts and get everything mounted the day is gone. I'm getting some m4's saturday i think but i want my bike now! i was planning on practicing the local DH course today or tomorrow for the race saturday. :angry:

Ok sorry for the rant, i feel much better now.

 

[yellowfox]

welp for one sears only had 10 and i need 12. another is i have no idea what grade 12 is (assuming its better than the 8 which is good) plus its going to be really close to hitting the lower part of the slider on my fork. I can always shave em down a hair i'm sure. I'm not really bummed that i have to find away to get it working its just i was hoping it was gonna be an easy stop at teh bike shop to get some bolts, put the bike together and ride after work. You have any idea about grade 12 bolts?

 

[Wumpus]

Bolts are also graded, designating how "hard" they are. Maybe you've heard of a "Grade 8" fasteners and wondered what that was all about. Well, wonder no more. Everything has trade-offs and bolts are no exception. The "harder" bolt you choose, the higher the grade number, and the more brittle or "less shear resistant" it becomes. Just because you are using a higher grade, or harder bolt, it might not be the appropriate fastener.

Think of bolts as plastic. If you have a softer plastic rod, it will flex, stretch and bend. If you have a brittle or hard plastic rod, you can pull on it and it won't stretch or break, but if you put side tension on the hard rod, it will snap with very little effort. These two characteristics are important to remember when choosing a bolt. The standard scale of bolt hardness ranges from Grade-2 (soft) to Grade-12 (hard), but a grade 8 is about as hard as you'll find on a Harley. Make sure you are using the same grade washer as the fastener. If you use a lower grade washer (softer) it will "give" or deform in time resulting in a loose bolt.

On a standard "Hex-Cap" or bolt with 6 sides on top, kind of shaped like a stop sign (only different), you'll see markings on the head, cap, or top of the fastener. They indicate what grade the bolt is. Most of the bolts you will be using on your motorcycle will be either a grade 5, which will have 3 slash marks on the top, or a grade 8 which will have 5 slash marks cast into the top. Don't ask me why the SAE decided to mark them this way (probably just to confuse the uninformed).

Other types of fasteners are not marked clearly, so it is important to purchase your fasteners from a reputable dealer. Cheaper fasteners are not hardened the same, or might not have the quality to stake your life on. Can you say "imported"? Beware. The process used to add "tensile strength" or to "harden" fasteners adds to the cost. The harder the bolt the more expensive it becomes. Most of the inexpensive standard hardware at the "Home Improvement" stores are unmarked are grade 2, which are very soft and flexible. They are fine for holding lumber together, but not what you want on your daily ride.

 

[yellowfox]

sweet wumpus thanks a lot

i was reading some stuff on the net too and found out about the grade marking. thats good to know. Turns out i shouldn't use the grade 12 bolts because they are to brittle and shear easy. Grade 8's the best to resist shearing without flexing a lot. Looks like i'll just cut down the old ones or wait until saturday to ride.

 

[golgiaparatus]

Damn

 

[golgiaparatus]

Originally posted by Wumpus
Bolts are also graded, designating how "hard" they are. Maybe you've heard of a "Grade 8" fasteners and wondered what that was all about. Well, wonder no more. Everything has trade-offs and bolts are no exception. The "harder" bolt you choose, the higher the grade number, and the more brittle or "less shear resistant" it becomes. Just because you are using a higher grade, or harder bolt, it might not be the appropriate fastener.

Think of bolts as plastic. If you have a softer plastic rod, it will flex, stretch and bend. If you have a brittle or hard plastic rod, you can pull on it and it won't stretch or break, but if you put side tension on the hard rod, it will snap with very little effort. These two characteristics are important to remember when choosing a bolt. The standard scale of bolt hardness ranges from Grade-2 (soft) to Grade-12 (hard), but a grade 8 is about as hard as you'll find on a Harley. Make sure you are using the same grade washer as the fastener. If you use a lower grade washer (softer) it will "give" or deform in time resulting in a loose bolt.

On a standard "Hex-Cap" or bolt with 6 sides on top, kind of shaped like a stop sign (only different), you'll see markings on the head, cap, or top of the fastener. They indicate what grade the bolt is. Most of the bolts you will be using on your motorcycle will be either a grade 5, which will have 3 slash marks on the top, or a grade 8 which will have 5 slash marks cast into the top. Don't ask me why the SAE decided to mark them this way (probably just to confuse the uninformed).

Other types of fasteners are not marked clearly, so it is important to purchase your fasteners from a reputable dealer. Cheaper fasteners are not hardened the same, or might not have the quality to stake your life on. Can you say "imported"? Beware. The process used to add "tensile strength" or to "harden" fasteners adds to the cost. The harder the bolt the more expensive it becomes. Most of the inexpensive standard hardware at the "Home Improvement" stores are unmarked are grade 2, which are very soft and flexible. They are fine for holding lumber together, but not what you want on your daily ride.

What-choo be sayin foo!!!!

Ait a harder washer best!!!!

Correct me if I'bein wrong but...

YEAH SUCKA!