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Can't get enough torque on primary nut, or is my torque wrench lying?

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Guys, I tried to torque my primary nut up to 101.5 ftlbs, or whatever the primary nut fix thread said to do.

My torque wrench is a draper (fairly cheap), half " drive and goes right up to over 150 ft lb.

I had to put a breaker bar on the flywheel the other side, trap it against the footpeg, then I had to stand with all my weight on my torque wrench (11.5 stone), yet the torque wrench would not click!!!

Is it out of calibration?

I managed to torque up the clutch basket nut appropriately and the wrench clicked, but could be out of calibration i guess?

I'm now worried that I've either not got enough torque on the nut and it's all got to come off again (red loctite). Or I've done some other damage by over torquing it???

Help please!

Cheers,

Con

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That's all very well, but I only have access to my torque wrench and breaker bar.

Do you guys think it will be tight enough with the method I've used to tighten it up?

When I was standing on the bar, one of the times I managed to get the nut to tighten a little, and after that it literally wasn't moving, and then the 26mm socket and breaker bar pinged off where it lost grip on the foot peg.

I'm fairly convinced I've done it up as tight as is possible with a bar the length of mine, my main worry is is this tight enough? or have i over tightened it? and what are the consequences

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How much is 11.5 stone in lbs and how long is your torque wrench handle( where you were standing on it)?

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Something is wrong with your torque wrench. If your standing on the wrench the nut is over tightened now. Probrbly not good. Loosen it up clean off the loctite and start over with a known good wrench.

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maybe try getting two people to stand on the wrench....

seriously though, there's good advice in the post above mine.

and Roach asked some good questions. how much is a stone?

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assuming the torque wrench is 19 inches(i looked at a bunch of lengths of 50-150 lb torque wrenches 19 seems to be the number), his torque should have been around 254.38 ft/lbs if i did the math correctly.

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I hate to see people use clicker torque wrenches. Even good ones. Eddie said it - none is better than a bad one.

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..I agree with M.B.

100ft lbs. is a tough pull..

You are pulling arent you?:thumbsup:

Im suprised you didnt break the torque wrench standing on it..

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Guys,

What the feck am I going to do now? I've just been out there to try and back the nut off and obviously with the locktite its stuck fast.

I tried a manual impact driver and 5lb hammer, I also tried standing on the wrnech again but i can't hold the flywheel enough.

A) is this ever going to come off

:thumbsup: what are the consequences of me having over torqued the nut? Will it damage the bearings etc, will it all falll appart again?

I can't believe I've ****ed this up so badly.

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Guys,

I'm hoping I haven't torqued it up to 200ft lbs, as I was using the breaker bar and socket wedged under the frame on the generator side to hold the flywheel, there must have been some flex in that to stop me torquing it up much more.

Also I only felt the nut tighten a little (maybe an 8th of a turn) whilst I had all my weight over the end of the wrench, after that it wouldn't budge

Presumably the crank is very strong?

I intend to heat the nut and the end of the crank up with a butane torch tonight, then use the same technique I used to get the nut tight to untighten it.

Any other suggestions? Would it be safer to use a nut splitter?

Cheers,

Con

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