Getting correct tensions?
Posted March 06, 2005 - 10:37 PM
Posted March 07, 2005 - 08:05 AM
My advice is to just bump up the setting a couple of pounds and not worry about it ...SC
Posted March 07, 2005 - 09:22 AM
Posted March 07, 2005 - 06:45 PM
I have to agree with Superat. There are torques specified for a reason. I work on Army helicopters and I can tell you that the correct torque, or incorrect torque at that matter can be a matter of life and death! We just had a issue today about a large bolt that sheared at the tailboom. This very well could have been due to over/under-torque.
The second issue is don't go too cheap if you decide to purchase a torque wrench. Look at their level of accuracy before you purchase. Yamaha has torques that are exact with no variance. Also a torque wrench remains accurate for a short amount of time and requires recalibration occasionally.
We paid good money for these machines and I believe they are worth the extra effort when we work on them.
Posted March 08, 2005 - 11:34 AM
Posted March 08, 2005 - 12:43 PM
With time you will develop a good feel for tightening, but if you want to be safe. Torque it.
Posted March 08, 2005 - 12:53 PM
Posted March 08, 2005 - 02:13 PM
3/8" rachet: "snug" is about 16-18 ft/lbs, "tight" can go up to about 45 ft/lbs or more.
I'm not a big guy, 6'2" 175#'s, so this may give you some aid as to how much pressure "snug" and "tight" really is.
Also I rebuild/work-on old Dodge and Plymouth cars/trucks and this is where I picked up the hand "feel" for torque specs. I've also broken off many fasteners and learned that breaking stuff just takes too much time and effort to fix.
Harbor Frieght tools sells a 1/4" torque wrench for $10-$15. It's worth the small $$ to buy one of thier wrenches so you have an idea where your at. (I know, China junk but at least it gets you close)
I have 1/2", 3/8" craftsmen torque wrenches that I use about every weekend and the cheapo 1/4" that I seldom use.
Best advise I have is to always use a 1/4" rachet whenever possible. You reduce your chances off over-torque and breaking stuff. If your using open/boxed end wrenches, up to about 17mm, the 1/4" drive specs apply. Steel bolts into aluminum threads is very easy to strip. And a 2 ft/lbs difference isn't going make much difference in most applications. K
edit: Sorry for the ramble
Posted March 08, 2005 - 02:43 PM
Posted March 08, 2005 - 05:46 PM
I am getting anal in my old age.