Time to Eat Some CROW!!!!

[Amber Lamps]

Originally Posted by fasternyou929

That and running it too tight. Your suspension will stretch your chain pretty quick for you if you don't have enough play in it.

QFT!!! That's why I run mine on the loose side...

[Gas Man]

So what did you do Tig?

Remember if you replace the bolt to check grade.

SS bolts are only grade 5

You can get chrome grade 8 bolts which end up being what they call 8.8 grade.

[Kerry_129]

Originally Posted by Trip

If it was just the bolt I would of went to Ace and bought some stainless hardware to replace it. Bolts is bolts.

Stick to electrons. A circuit breaker is a circuit breaker, right?

Originally Posted by Gas Man

SS bolts are only grade 5

Basically correct, in terms of the yield/tensile strength they're pretty close to SAE grade 5. Stainless bolts don't carry a grade/class designation, though they are covered by various (confusing) specifications. The commonly available stuff is 18-8 stainless, and min. properties/dimensions are specified by ASME B18.2.1

Originally Posted by Gas Man

You can get chrome grade 8 bolts which end up being what they call 8.8 grade.

Negative.
'8.8' is a metric class designation which is roughly equivalent to SAE grade 5 fasteners, and they are available in chrome-plated.
Class 10.9 are roughly equivalent to SAE grade 8, and 12.9 is an even stronger class which doesn't have an equivalent SAE counterpart.

(Sorry to geek-out on ya, but I had to chime in since this crap has been my bread & butter for a while... )

In that application, I'd use 10.9 - but then I don't think I'd use those adjusters in the first place, since I think they're a poor design (even though they look kinda cool).

[Amber Lamps]

Originally Posted by Kerry_129

Stick to electrons. A circuit breaker is a circuit breaker, right?




Basically correct, in terms of the yield/tensile strength they're pretty close to SAE grade 5. Stainless bolts don't carry a grade/class designation, though they are covered by various (confusing) specifications. The commonly available stuff is 18-8 stainless, and min. properties/dimensions are specified by ASME B18.2.1



Negative.
'8.8' is a metric class designation which is roughly equivalent to SAE grade 5 fasteners, and they are available in chrome-plated.
Class 10.9 are roughly equivalent to SAE grade 8, and 12.9 is an even stronger class which doesn't have an equivalent SAE counterpart.

(Sorry to geek-out on ya, but I had to chime in since this crap has been my bread & butter for a while... )

In that application, I'd use 10.9 - but then I don't think I'd use those adjusters in the first place, since I think they're a poor design (even though they look kinda cool).

Yea, I'm gonna use the stock bolts for back stops to totally avoid any future problems when I get the new units next week. I'm not sure what I think to be honest, I admit to jumping a speed bump, allowing the chain to get way loose AND keeping the axle kinda loose... I don't think that the axle could have moved so far if I had it correctly torqued.

[Kerry_129]

Yeah, I definitely wouldn't just rely on the stop bolts to keep it from moving & 'spect that is the biggest contributing factor to the failure.

Why were you running the axle loose (didn't read back thru if it was in the thread)?

[Trip]

Originally Posted by Kerry_129

Stick to electrons. A circuit breaker is a circuit breaker, right?

I do more mech Engineering than I do electrical engineering nowadays on the clock. Damn mechanical aspects of the motors and breakers tend to fail first. I have had much more training in that than I have in electrical in the past few years. The aluminum is what I would be worried about more than the stainless steel bolts. No telling what Gilles actually sends out, but I don't think they go with the most stout bolts they can find. I doubt he needs safety related bolts for it though.

[Amber Lamps]

Originally Posted by Kerry_129

Yeah, I definitely wouldn't just rely on the stop bolts to keep it from moving & 'spect that is the biggest contributing factor to the failure.

Why were you running the axle loose (didn't read back thru if it was in the thread)?

Ah, I'm just stupid. I had this stupid theory that the wheel turned easier... Actually, because I have a locking axle nut, I don't crank down on it that hard...

[Trip]

Originally Posted by TIGGER

Ah, I'm just stupid. I had this stupid theory that the wheel turned easier... Actually, because I have a locking axle nut, I don't crank down on it that hard...

It's cause you have a secret hatred for engineers isn't it? Screw their torque values!

[Amber Lamps]

Originally Posted by Trip

It's cause you have a secret hatred for engineers isn't it? Screw their torque values!

Well to be honest, between architects and engineers, it's a wonder that I have any hair!!!

In all honesty it's a bad habit that I've gotten into since I got this Gilles axle nut. My torque wrench is in the tool chest now anyway.

[Gas Man]

Thanks Kerry. Tell me though... if they chrome the grade 8 bolt (which my hardware store carries) does it add to the tensile strength?