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Modify a torque wrench?
started by arcticcatmatt
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April 27th 2009 at 9:29 AM
[ Modified April 27th 2009 at 9:30 AM
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arcticcatmatt
Spleen Splitter
arcticcatmatt leaving after work for 3 days of shotgun season back home!
Updated Yesterday at 12:16 PM
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I have a torque wrench for 20-150 foot lbs. I need to torque a few bolts to 7 foot lbs. I don't want to go buy another big dollar torque wrench to do these.
I am asking a few coworkers to see if they have one that goes that low to borrow.
Does anyone know of a way to make what I have work? Someone was telling me how they did theirs but it seemed fishy. By modify I am talking about making an extension or something, not frigging up my tool.
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April 27th 2009 at 9:45 AM
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mmiller491
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i havent heard of anything like that before, our tourqe wrench is 20-100ft lbs. If you figure something out let me know cause I often need to torque very lightly too and i just eyeball it.
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April 27th 2009 at 9:45 AM
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duece
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for that kind of torque you have to drop down to a 3/8 or 1/4 for accuracy
gerald j sullivan
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April 27th 2009 at 9:59 AM
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RMK-KING
The Fabricator Moderator
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For that I would probley just use your best judgment and tighten it by hand,7ft/lbs is only about a half turn past finger tight.
Current Line Up
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Days get shorter,snow gets deeper,life gets better.
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April 27th 2009 at 11:40 AM
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arcticcatmatt
Spleen Splitter
arcticcatmatt leaving after work for 3 days of shotgun season back home!
Updated Yesterday at 12:16 PM
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14007 Posts
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I am doing internal engine components on my motorcycle. Doing the cam journals to the 7ft lb requirement.
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April 27th 2009 at 12:16 PM
[ Modified April 27th 2009 at 12:18 PM
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07Phazer
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^^ I had the same dilemma when I went to adjust the valves on my Ninja 250 the first time. The rocker arm bolts are torqued to 12 ft-lbs. After reading about many people snapping those tiny little studs off and many others warning to get a small torque wrench or risk damaging those parts, I went and bought an inch-pound torque wrench just for my bike (12 ft-lbs = 144 in-lbs).
I also have a 20-150 ft-lbs torque wrench, and there is no way that thing would click at 12 ft-lbs, no matter what I did to it. 12 ft-lbs is an unbelievably low torque, and the 7 ft-lbs that you require is even worse. You will be amazed at how lightly that bolt will be tightened the first time you do it.
Remember, what you are torquing down is a small bolt holding the camshaft journals in place so the cams have a bearing surface to ride on while they spin at around 10,000 rpm. Do you really want to rig up some contraption on the end of your torque wrench to tighten that bolt? I had this same conversation with myself, just before I went and got my in-lbs torque wrench.
I think mine was about $60 at Sears. Yeah, it sucks to drop that much on a hardly ever used tool, but it would have sucked even more to snap off one of those rocker arm studs.
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April 27th 2009 at 12:26 PM
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tomjac
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I can't imagine that a simple leverage modification would prove accurate.
If you have the auto parts chain "Auto Zone" where you live. They loan tools. Simply give them a deposit and when the tool is returned they return your deposit. I've done it a few times for specialty tools and it is no fuss or muss.
Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.
Coldwater, MI
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April 27th 2009 at 12:34 PM
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picman
Junior Member
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Most auto parts stores are now getting into that act. We have an Auto Zone here now but before they came in, no parts store would loan tools. Now, they figure they are losing business to Auto Zone and do it.
They don't really "loan" the tool. You are actually buying it with the understanding that it will be returned in a servicable condition when finished. Most of what they have is low priced but thay do have some more expensive ($100 plus tools) ones.
Can't really beat it if it is some thing you will only use once or twice.
I needed to pull the fly wheeel of my outboard motor. $15 was the deposit on the puller.
Find the line between respect and fear....then flirt with it
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April 27th 2009 at 12:34 PM
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MACHZRider
"!nmad !rettilps neelps pu deeps"
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We use both ft-lb torque wrenches and in-lb torque wrenches on helicopters. I would not scimp out on the internal torques of the motor by eye balling it or whatever. Go to an auto garage or something and see if they will let you use one. I bet they have one. Do you know anyone?
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April 27th 2009 at 12:56 PM
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1greenmachine
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Matt i would let you use my inch pound wrench if we were closer, there are torque multipliers but i've never heard of something like what you want. As others have said try a parts store or harbor freight should have a 1/4 drive pretty cheap.
I spend money i don't have, on parts i don't need, to impress people i don't know.
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April 27th 2009 at 1:45 PM
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arcticcatmatt
Spleen Splitter
arcticcatmatt leaving after work for 3 days of shotgun season back home!
Updated Yesterday at 12:16 PM
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Autozone does not have a loan a tool that goes down that low.
Coworker has one he is letting me borrow (he thinks). Normally I would just buy it but this job is already costing me enough money and I had to buy a couple other tools already. If he doesn't have one, I will buy.
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April 27th 2009 at 1:54 PM
[ Modified April 27th 2009 at 1:54 PM
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TUGHILLfever
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try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
There is nothing more satisfying than speed. Speed is addictive, remember you can only go faster.
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April 27th 2009 at 2:00 PM
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1greenmachine
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Quote originally posted by TUGHILLfever
try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
Its for an internal part so they are very crucial. We had a engine at work that a company did their own overhaul and the tech forgot to torque 1 jam nut which caused the adj-screw to loosen and jammed the push tube between the block and cam destroying both.
Hopefully your co-worker will loan you his torque wrench and later you can find a deal on one for yourself. All mine are snap-on but i make my living with them and they have to be dead on.
I spend money i don't have, on parts i don't need, to impress people i don't know.
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April 27th 2009 at 2:26 PM
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arcticcatmatt
Spleen Splitter
arcticcatmatt leaving after work for 3 days of shotgun season back home!
Updated Yesterday at 12:16 PM
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14007 Posts
Group: Moderators
Member Since: November 25th 2001
Location: Berkshire, NY, USA
Current Sled: 96/97 ZRT 600
2008-2009 Miles: 450
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LMAO at the mention of harbor fright. I would never trust any thing of theirs on my internal engine components. Chinese pieces of junk.
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April 27th 2009 at 2:31 PM
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polarisrxlrider
Cornfed
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Find yourself an inch lbs torque wrench. You'll use it more then you think. They can be had cheap. In the case of 7ft lbs, you would just multiply the 7 ft/lbs by 12, for 12inches in a foot, giving you the torque spec of 84in/lbs
2000 Polaris 600 XCSP with VES, completely stock, for now...
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April 27th 2009 at 2:34 PM
[ Modified April 27th 2009 at 2:35 PM
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bobp53916
Looking for Sno Pro motor mounts
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Quote originally posted by arcticcatmatt
LMAO at the mention of harbor fright. I would never trust any thing of theirs on my internal engine components. Chinese pieces of junk.
Yeah, to use a tool made in China on a bike made in Japan/China wouldnt make any sense would it...
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April 27th 2009 at 2:39 PM
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TUGHILLfever
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i dont know i am a ASE certified technician i have a portfolio of training and awards and i have a GIANT mac macsimizer tool box filled with tools and i would say i have 25 percent china junk (including harbor freight) i have a snap on for doing percision work but for 7 foot lbs i could do that with a wrench and get it darn close .... the only reason there is a spec on the torque is so that some knukle head mechanic wont snap the little bolt
There is nothing more satisfying than speed. Speed is addictive, remember you can only go faster.
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April 27th 2009 at 2:41 PM
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bushwacker
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I'm with arcticcatmat, everything that HarborFreight sells is strictly a single use item. If you need something to use more than once you'll need to buy a better quality one. I went to aHarbor freight sale once and everything I bought there is now broken. I'd say Borrow or rent if possible.
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April 27th 2009 at 2:52 PM
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TUGHILLfever
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this is my shop i will admit i have lots of china tools and if ya look close see the grand am up in the air its on a lift i bought 3 weeks ago and it was made in china. It is a 12000lb lift the american twin to it was 2500 dollars more i am pro american but money is money in this economy
There is nothing more satisfying than speed. Speed is addictive, remember you can only go faster.
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April 27th 2009 at 5:36 PM
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dtmmil
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Quote originally posted by arcticcatmatt
LMAO at the mention of harbor fright. I would never trust any thing of theirs on my internal engine components. Chinese pieces of junk.
Haha, I get a kick out of anyone that complains about chinese stuff, where was your bike made!!! I have a harbor freight one, tested it against a strap-on, over priced one, dead on with it.
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April 27th 2009 at 5:47 PM
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ACG
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Quote originally posted by TUGHILLfever
try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
Most things on helicopters and airplanes aren't torqued much past 10 foot pounds.
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April 27th 2009 at 5:55 PM
[ Modified April 27th 2009 at 6:04 PM
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arcticcatmatt
Spleen Splitter
arcticcatmatt leaving after work for 3 days of shotgun season back home!
Updated Yesterday at 12:16 PM
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14007 Posts
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Quote originally posted by dtmmil Quote originally posted by arcticcatmatt LMAO at the mention of harbor fright. I would never trust any thing of theirs on my internal engine components. Chinese pieces of junk. Haha, I get a kick out of anyone that complains about chinese stuff, where was your bike made!!! I have a harbor freight one, tested it against a strap-on, over priced one, dead on with it. Harbor fright and precision do not go together, everyone knows that. My bike was made in Japan, I am fully aware of that. When I went to buy a bike I could not find a buell for less than 4 grand. Hell all the buells that were even close to the SV were 7-10 grand. So it was either buy the SV or not have a motorcycle. This bike is fun and all but it is designed like $hit. I am in the garage right now doing the valve adjustment. Shim under bucket.. blah. Then I have to hook up tubing to sync the carbs because they put them in a stupid ass location that is almost impossible to get to. Not to mention little things like the hash marks to center the rear wheel are way off from the factory. Front cylinder also cuts out when it rains, almost all SV's do. The bike is far from perfect. It is OK for the price. I will be test riding buell's for my next bike purchase. Would like to make a Ulysses into an adventure bike. Quote originally posted by TUGHILLfever this is my shop i will admit i have lots of china tools and if ya look close see the grand am up in the air its on a lift i bought 3 weeks ago and it was made in china. It is a 12000lb lift the american twin to it was 2500 dollars more i am pro american but money is money in this economy Isn't that something I googled them and see made in america and headquarters in america everywhere. http://www.rotarylift.com/light_2post_li...spx?id=330 But then I go back to an article in 2007 that shows where they bought a company out that is in texas. That company builds its lifts in China. Looking into it more, this Hanmercson company made a few of their lift models in china. So some rotary lifts are made in usa, some are made in china. It is a usa company. Not really getting at anything, just figured I would post what I read as I found it interesting. Oh and I just looked up tests that were done with harbor fright torque wrenches. Some were OK.. the others were WAY off. No quality control. Would you buy a new snowmobile that was torqued with harbor fright torque wrenches? Or a new car who had its internal engine components torqed with a harbor fright item? Not me. I use a torque wrench when I want to be 100% I did it as the design was intended and based on what I have read, harbor fright is not the tool of choice for that.
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April 27th 2009 at 6:10 PM
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MACHZRider
"!nmad !rettilps neelps pu deeps"
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447 Posts
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Quote originally posted by ACG
Quote originally posted by TUGHILLfever
try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
Most things on helicopters and airplanes aren't torqued much past 10 foot pounds.
not sure where you get your information but when was the last time you torqued something on a helicopter? drive shaft bolts, main gear box, rotor blades, high speed drive shafts, combiner gear boxes...etc.
These things require major torques. not sure the exact amount but i'm pretty sure the last time we torqued the rotor head on blackhawk it was up around 750 ft-lbs and it took 2 of us. the torque wrench was about 4 ft long.
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April 27th 2009 at 6:17 PM
[ Modified April 27th 2009 at 6:19 PM
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i have a small inch lb wrench from snap on that works well. but for the most part 7lb ft is snug by hand.
Quote originally posted by MACHZRider
Quote originally posted by ACG
Quote originally posted by TUGHILLfever
try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
Most things on helicopters and airplanes aren't torqued much past 10 foot pounds.
not sure where you get your information but when was the last time you torqued something on a helicopter? drive shaft bolts, main gear box, rotor blades, high speed drive shafts, combiner gear boxes...etc.
These things require major torques. not sure the exact amount but i'm pretty sure the last time we torqued the rotor head on blackhawk it was up around 750 ft-lbs and it took 2 of us. the torque wrench was about 4 ft long.
with all the money the military has they could atleast buy you a multiplier?! I could do lug nuts to 600lb ft by myself very easily with one.
nothing goes like 3 holes!!
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April 27th 2009 at 9:13 PM
[ Modified April 27th 2009 at 9:14 PM
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MACHZRider
"!nmad !rettilps neelps pu deeps"
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447 Posts
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Quote originally posted by madcow
i have a small inch lb wrench from snap on that works well. but for the most part 7lb ft is snug by hand.
Quote originally posted by MACHZRider
Quote originally posted by ACG
Quote originally posted by TUGHILLfever
try www.harborfreight.com
i have one somewhere but for seven foot lbs thats just snugging the bolt if it is not a crucial bolt id tighten it by hand lighlty with a ratchet.
Most things on helicopters and airplanes aren't torqued much past 10 foot pounds.
not sure where you get your information but when was the last time you torqued something on a helicopter? drive shaft bolts, main gear box, rotor blades, high speed drive shafts, combiner gear boxes...etc.
These things require major torques. not sure the exact amount but i'm pretty sure the last time we torqued the rotor head on blackhawk it was up around 750 ft-lbs and it took 2 of us. the torque wrench was about 4 ft long.
with all the money the military has they could atleast buy you a multiplier?! I could do lug nuts to 600lb ft by myself very easily with one.
It doesn't take 2 to use the torque wrench. when torquing the bolts on a rotor head on a blackhawk they are recessed down in from the top and there are about 18 of them in pairs of 2. You need a long extension to get to them. You can't be slippin off these and banging into stuff. They tend to be super anal about aircraft so you need one holding the extension and keeping it straight while the other uses the wrench. And it's not like standing on the ground changing a tire or with a car on a lift, you are standing on top of the aircraft 15 ft off the ground.
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