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Author Topic: When wrenching, you know that feeling like a bolt is ready to snap, well.  (Read 1235 times)
_Sheffjs_
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Jerry & Sherry Sheffer

Sarasota FL


« on: October 10, 2017, 06:07:49 PM »

I am a grease guy, I greased my Kawasaki riser bolts and preceded to torque evenly the h-bars down to 25 f# as stated, these are not Honda sized bolts - this is an M8!  Zing!  Shocked  the bottom part of the riser gone, toast.   Get with Drifter peeps and one sent.  Put it on all is well with the top four bolts.  Now on the bottom where it is bolted - set to triple tree - I am on the last of two bolts and I feel it. Noooooo, Grumpy, how often do you cuss?   I wanted to make sure so I finished the deal, snapped right off.  Wait! I had a small one inch long sears socket extender. Yep the head snapped right off.  I don’t think Sears takes stuff back anymore or is there a Sears? 
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Grumpy
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Posts: 3106


Tampa, Fl


« Reply #1 on: October 10, 2017, 07:23:59 PM »

I am a grease guy, I greased my Kawasaki riser bolts and preceded to torque evenly the h-bars down to 25 f# as stated, these are not Honda sized bolts - this is an M8!  Zing!  Shocked  the bottom part of the riser gone, toast.   Get with Drifter peeps and one sent.  Put it on all is well with the top four bolts.  Now on the bottom where it is bolted - set to triple tree - I am on the last of two bolts and I feel it. Noooooo, Grumpy, how often do you cuss?   I wanted to make sure so I finished the deal, snapped right off.  Wait! I had a small one inch long sears socket extender. Yep the head snapped right off.  I don’t think Sears takes stuff back anymore or is there a Sears? 
My policy on risers, measure the depth of the holes and get as long a bolt that will tighten without bottoming out, then get the highest rated bolt and use never seize. And I learn new words all the time.  tickedoff
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Life is like a hot bath. It feels good while you’re in it, but the longer you stay in, the more wrinkled you get.
Chrisj CMA
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Crestview (Panhandle) Florida


« Reply #2 on: October 11, 2017, 06:17:13 PM »

Lose the torque wrench for 90 percent of fasteners and that will happen a lot less Wink
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longrider
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Posts: 557


Vernon, B.C. Canada


« Reply #3 on: October 14, 2017, 06:58:44 AM »

Lose the torque wrench for 90 percent of fasteners and that will happen a lot less Wink

I agree
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_Sheffjs_
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Posts: 5613


Jerry & Sherry Sheffer

Sarasota FL


« Reply #4 on: October 14, 2017, 08:11:13 AM »

 Don’t quite understand, I’m positive if I didn’t use a torque wrench I would over tighten
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John Schmidt
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a/k/a Stuffy. '99 I/S Valk Roadsmith Trike

De Pere, WI (Green Bay)


« Reply #5 on: October 14, 2017, 08:52:05 AM »

Don’t quite understand, I’m positive if I didn’t use a torque wrench I would over tighten
I agree with the others on this....get to know the "feel." Using a torque wrench especially on small bolts will often end up snapping them because the bolt is already old and stretched. Sometime take a bolt and insert it in a part and test your feel for tightening it to a given number....say, 7 ft. lbs. for a small stud bolt. Then put a torque wrench on it and see how far off you are, if at all. The header studs on the Valk, I've never used a torque wrench, same with the small intake runner bolts that go into the head. The 1200 has a ton of small bolts the same size as the Valk intake runners, I have yet to use a torque wrench and have yet to have a leak of either oil or coolant. On non-critical stuff, just because the book calls for a specific torque number doesn't mean it has to be exactly that number. Just don't go over that number due to the size of the bolt and not necessarily because that's the amount of torque needed to do the job right or make that part function properly. Obviously, when it comes to engine assembly...torquing con-rods, crank bearing caps, heads, etc., out comes the torque wrench. But there have been many times in the past when I didn't have a torque wrench available so had to reassemble without it. Still never had an engine come apart.

And FWIW, using grease on threads often times will cause you to reach an incorrect torque number too early in the tightening process. As Bill mentioned, I'll use a slight amount of anti-seize, just a small dab and let the screwing in cause it to spread to all the threads. The main thing in most cases is you don't want a layer of grease to build up under the head of a bolt. It won't compress properly and gives a false reading.
« Last Edit: October 14, 2017, 08:56:04 AM by John Schmidt » Logged

Chrisj CMA
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Crestview (Panhandle) Florida


« Reply #6 on: October 14, 2017, 10:34:30 AM »

Quote from: _Sheffjs_
and it'slink =topic=97624.msg970722#msg970722 date=1507993873
Don’t quite understand, I’m positive if I didn’t use a torque wrench I would over tighten

When you don't use a torque wrench and are forced to develop a feel for what is tight based on size of fastener and what it's job is you feel when it's tight enough.  Use the Force young Jeddi  it won't let you down.
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Earl43P
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Posts: 423


Farmington, PA


« Reply #7 on: October 14, 2017, 03:38:16 PM »

I've been relying on the old stand-by of 1/6 to 1/3 of a turn (wrench arc) from the point where a sharp rise in torque is felt. The most recent thing I've snapped was a 1/2 to 3/8 drive adapter. It was chinese crap and broke while loosening a shock absorber stud's nut on my truck.

I adopted that from a GE jet engine maintenance manual originally written for the US Army back in the 70's.

I have a torque wrench and did use it when I reinstalled the Valk's forks when I had a guy replace the seals for me. I never use it for much else, not even axle pinch nuts/bolts.
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