How about guys putting lots of grease on a bolt and then trying torque it.  Torque specs are based on dry metal to metal contact unless called out for a specific anti seize or lubricant.  If so the torque value has to be reduced from the dry value.    

Edited March 12, 20179 yr by billyt

Most chemists sell powerbands

1 hour ago, sirdabalot said:

Most chemists sell powerbands

Only work when combined with mojo bands. FACT.

23 hours ago, billyt said:

How about guys putting lots of grease on a bolt and then trying torque it.  Torque specs are based on dry metal to metal contact.    

Not sure where you're getting your information from, Billy. Every fixings manufacturer I have known has quoted "lightly oiled".

Trapezartist   Got my info from University of Glasgow mechanical engineering classes.  Shady dubious source I guess!!!  Who knew........

From www.antiseize.com 

General Information on Torque Specifications.....

The amount of torque applied to a bolt or nut determines the Clamp Load. This Clamp Load is a determining factor in the performance of the assembly. The torque applied to a fastener with an antiseize compound pre- applied to the threads will ensure uniformity through out the process but will increase the Clamp Load compared to an unlubricated bolt.

For critical applications, as determined by the Engineering Project, either the recommended torque or a torque that is unique to the application shall be clearly identified and specified on the engineering documentation.

Standard manufacturing practices for the installation and tightening of fasteners shall apply to all fasteners which do not have a specific requirement identified on the documentation. The following factors shall be considered when applying torque: cleanliness of the fastener, use of a thread sealant or lubricant, degree of lubrication on the fastener, presence of a prevailing torque feature, hardness of the surface underneath the fastener's head, or similar condition which affects the installation. As noted on available charts, torque values should be reduced by 25% for lubricated fasteners to achieve the similar stress as a dry fastener.

Torque values may also have to be reduced when the fastener is threaded into aluminum or brass. The specific torque value should be determined based on the aluminum or brass material strength, fastener size, length of thread engagement, etc.

The standard method of verifying torque shall be performed by marking a line on the fastener (head or nut) and mating part then backing off the fastener 1/4 turn. Measure the torque required to tighten the fastener until the lines match up.

• Reduce the torque values by 25% for lubricated fasteners.

• Torque may have to be reduced when installing fastener into threaded aluminum or brass. The specific torque value should be determined based on fastener size, the aluminum or brass material strength, length of thread engagement, etc.

  • The nominal torque values listed for Grade 5 & 8 fasteners are based on 75%, of the minimum proof load specified.

  • Hole size, material strength, material thickness & finish must be considered when determining specific torque.

• Values: Most torque values are based on non-lubricated fasteners.

• Definitions: Lubricated means coated with a lubricant such as engine oil, thread sealant or threadlocker.

• It is necessary to determine Torque coefficient (or Nut Factor) independently, for all critical applications.

2345 N. 17th AVE. • FRANKLIN PARK, IL 60131– 3432 • 847-455-2300 • FAX 847-455-2371

Email: sales@antiseize.com • Website: www.antiseize.com 

    

Edited March 13, 20179 yr by billyt

My general advice on torque is twofold:

 

1.  Tighten until you get that weird tingly feeling in your stomach that makes you think the bolt is going to either break or strip.

2. Factory torque or cross-threaded, tight is tight.

MX related but this always used to be a cracker;

If your bike runs too rich its because you have too much oil in your fuel

Too low a tyre pressure causes the knobblies to close over and you lose grip

Only run a trials tyre in the direction of the arrow, it wont work in reverse

35 minutes ago, faussy said:

Only run a trials tyre in the direction of the arrow, it wont work in reverse

- unless it's on a  Bultaco ..

Edited March 14, 20179 yr by b40rt

Guy at Gas Station trying to impress with his bike knowledge:

"Yea those bikes you have there are actually flat track bikes that you aren't using properly"

--Biff

Nice misconception/myth I hear a lot is isn't that one of those stunt bikes?

Frequently enlightening people on that one... LOL

Edited March 14, 20179 yr by jonnyc21

I heard this one when I was younger watching some guys practicing at the local quarry:

Spectator1 : "wow he makes getting up that rock look easy! its like the bike just jumps up and flies!!!!"

Spectator2: "If you put helium in your bike tyres it would do the exact same.."

 

And finally my wife's input (she says this every time she see's the bike);

"I don't know why you bought that.  It doesn't even have a seat and where are you supposed to put your stuff like helmet, keys, shopping etc?"

 

How many of us have said this?