Why use new rotor bolts?????
Outstanding HDF Member
Joined: Apr 2010
Posts: 3,373
Likes: 4
Guess it depends on who or whom (idk) you talk to?
I was trained that it a range not an absolute must be done so to speak.
IE: 50 - 65ft lbs, Minimum acceptable 50, Maximum allowable 65.
Works on aircraft and aircraft related systems that I worked with. Never had any problems or mishaps even with the excessive stress and vibration of a jet pulling G's in a turn. But what do I know? I was trained by the gov't and my quality assurance stamp only meant I verified it was done right and safe for flight.
I was trained that it a range not an absolute must be done so to speak.
IE: 50 - 65ft lbs, Minimum acceptable 50, Maximum allowable 65.
Works on aircraft and aircraft related systems that I worked with. Never had any problems or mishaps even with the excessive stress and vibration of a jet pulling G's in a turn. But what do I know? I was trained by the gov't and my quality assurance stamp only meant I verified it was done right and safe for flight.
Road Master
Joined: May 2010
Posts: 1,005
Likes: 4
From: Alabama
Guess it depends on who or whom (idk) you talk to?
I was trained that it a range not an absolute must be done so to speak.
IE: 50 - 65ft lbs, Minimum acceptable 50, Maximum allowable 65.
Works on aircraft and aircraft related systems that I worked with. Never had any problems or mishaps even with the excessive stress and vibration of a jet pulling G's in a turn. But what do I know? I was trained by the gov't and my quality assurance stamp only meant I verified it was done right and safe for flight.
I was trained that it a range not an absolute must be done so to speak.
IE: 50 - 65ft lbs, Minimum acceptable 50, Maximum allowable 65.
Works on aircraft and aircraft related systems that I worked with. Never had any problems or mishaps even with the excessive stress and vibration of a jet pulling G's in a turn. But what do I know? I was trained by the gov't and my quality assurance stamp only meant I verified it was done right and safe for flight.
+1
In the automotive field we were also trained that it is a "range" that is acceptable. A minimum to maximum range. Anywhere in-between is OK.
Unofficial HDF Chaplain
Joined: Dec 2009
Posts: 21,160
Likes: 18,082
From: san diego
if you do it the way I suggest, you will never be wrong, if you believe torque specs are a value with a high and low go the other way. in the long run, don't let your nuts and bolts come loose!!
Last edited by harleycharlie1992; Jan 10, 2012 at 04:04 PM.
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
Whether you believe its a range or 2 steps, of the 2 hyphenated values in the torque specification, you can't go wrong by using the latter, higher value. While commonly considered the max torque you should apply, it is actually 75% of absolute torque, which is simply an engineering margin of safety. If there is a chance that you somehow surpass that margin of safety, it is typically recommended to use new fasteners. Torquing in steps usually goes 1/3, 2/3,3/3 max specified. I've always recognized xx-xx ft/lbs as a torque range, and will continue to do so until I see it contradicted in print by a qualified source.
Seasoned HDF Member
Joined: Jun 2005
Posts: 12,946
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From: Colorado Springs, CO
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Road Master
Joined: May 2010
Posts: 1,005
Likes: 4
From: Alabama
When a fastener list a range I always torque to the high end of that range.
Just make sure you are using high quality, accurate torque wrenches. Can't stress this enough. Don't use a torque beam style or a parts house rental. I can all but guarantee you they will be inaccurate.
I send mine back for re-calibration every so often just to be sure they are accurate. Even the highest quality torque wrenches will get out of calibration with enough use.
Just make sure you are using high quality, accurate torque wrenches. Can't stress this enough. Don't use a torque beam style or a parts house rental. I can all but guarantee you they will be inaccurate.
I send mine back for re-calibration every so often just to be sure they are accurate. Even the highest quality torque wrenches will get out of calibration with enough use.
Road Master
Joined: Jan 2011
Posts: 893
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From: Knob Noster, MO
They are $.50 a piece for the standard ones, so $5 for a front and rear rotor swap. How often do people change their rotors? I don't think $5 is going to break anyones wallet. If the manual suggests to not reuse them and replace them I think it would be a wise choice to do so, imo. I am swapping wheels soon and reusing my stock rotors but I purchased new front/rear rotor bolts and rear pulley bolts.