I am getting a bit old, and don't weigh too much, so when I get in an awkward position and have to apply high torque to a bolt or nut, I find it difficult sometimes. I've heard of torque multipliers, and wondered if anyone has experience with them. As far as accuracy, if I needed 90 ft/lbs torque, could a torque mult. tool provide that value accurately? And, are they expensive? Thanks,
Anyone Use Torque Multiplier Tool?
- Thread starter DonIvey
- Start date
Long haul
Active member
I've used them before doing main bearings on a cummins motor (850 ft lbs torque). They are very accurate but very cumbersome to use. They are also very expensive I believe the one i barrowed my buddy said he paid close to $2500 for it.
mark40sw
Well-known member
I've used them in an industrial setting in the past. For a Torque Multiplier to be of any use, have to be in location where a "counter force" arm can act against, such as other adjacent large threaded fasteners being tightened.
These videos may give better idea of where they may and may not be useful.
They are rather expensive and used for big stuff. Cheaper to use a longer wrench.
These videos may give better idea of where they may and may not be useful.
They are rather expensive and used for big stuff. Cheaper to use a longer wrench.
volvo
Well-known member
...
Torque can be modified on what/how your set up is used. We had some diesel engines that you used a box wrench setup on the end of the torque wrench. At 90 degrees it was one measure, the at 180 degrees it doubled the reading at the head bolt.Sorry I can not find that chart.
If your nut/bolt to be torqued is not directly over the wrench socket, then the torque reading is not the same at bolt. About the same time all our engine torque specs went to three angle torque setting anyway.
Torque can be modified on what/how your set up is used. We had some diesel engines that you used a box wrench setup on the end of the torque wrench. At 90 degrees it was one measure, the at 180 degrees it doubled the reading at the head bolt.Sorry I can not find that chart.
If your nut/bolt to be torqued is not directly over the wrench socket, then the torque reading is not the same at bolt. About the same time all our engine torque specs went to three angle torque setting anyway.
CarterKraft
Well-known member
So far what everyone has said is true. a 18:1 is gonna cost some bux, there heavy as hell and you will cuss the entire time if you are trying to use it yourself. It would also be 300% to big for common torque ratings. A longer torque wrench would help alot and several companies make "tire" service torque wrenchs that are longer than normal for repeat use. We use the torque adapters allot and they can almost double the capacity of a wrench or cut the required force in half if needed.
heres an adapter calculator that might help. Adapters are easy to make also buy welding cut down or hole sockets to wrenchs. A short extension of the drive size you need can be welded to a piece of flat bar and make a easy adapter.
Torque Wrench Adapter Calculator
heres an adapter calculator that might help. Adapters are easy to make also buy welding cut down or hole sockets to wrenchs. A short extension of the drive size you need can be welded to a piece of flat bar and make a easy adapter.
Torque Wrench Adapter Calculator
CarterKraft
Well-known member
I forgot about 4:1 and 3:1 multipliers, these are the same as the larger ones but have less multiplication and are sometimes lighter. They can be had from cheap tool places for sub $200 prices are but are still very combersome to use and are gonna have 3/4" to 1" output drives.
mslisaj
Well-known member
I have used Torque multipliers many times. But there were all on stationary power plants or railroad prime movers. They were not only very cumbersome but I was still trying to pull 250 - 300 foot pounds on a torque wrench. Still hard work and glad I did it when I was much younger.........
Maybe weight lifting would pay better.....
Good luck.
Lisa
Maybe weight lifting would pay better.....
Good luck.
Lisa
LAROKE
Banned
I use profanity for leverage.
ilovevocs
Well-known member
lmao
I find that as I age I become an even more useful source for torque, with more and more body weight that I can apply to a cheater bar that I can stand on. 
My car's axle nuts needed to be tightened to 340 ft-pounds, which just meant that I had to put my full weight on the bar 25" from center.
My car's axle nuts needed to be tightened to 340 ft-pounds, which just meant that I had to put my full weight on the bar 25" from center.
VWPORSCHEGT3
Banned
just like jack except his car is far more expensive...... our Aircooled VW's axle nuts have to be uber torqued, I bought an Empi axle nut wrench that you use a breaker bar and a sledge to tighten with... things are awesome...wish it wasn't chinese though, and im pretty darn sure its getting over torqued but ive never had a nut back off on me yet and when i drive my VW's im a little ricky racer like
kald
Well-known member
As someone else said, something like this may be a solution for you.
http://www.freeinfostuff.com/TorqueExtension/TorqueExtension.htm
http://www.freeinfostuff.com/TorqueExtension/TorqueExtension.htm
There is nothing so useful for many automotive applications. I bought a 4:1 US made (MAC) off eBay for less than half its new price (400+) to do a job on a Jag differential (see the XJ40 tech book on jaglovers.org for the ****** story) that could not, simply, have been done without it. Not just for the multiplier effect, but for controllability- torquing a pinion nut to something around 300 lb/ft +/- a few INCH pounds. You cannot do that with a breaker bar. Since then it has proven indispensable with rear axle nuts, and with the crankcase nut on my 928. Very easy to use, a great addition to a toolbox. But beware cheap knock-offs from u-know-where. Look at their capacity ratings before you buy. And I would not buy one that had less than a 4:1 ratio. Think of it 300 = 75 at that, very easy to do.
Randy in Maine
Well-known member
I have one of these myself.
http://vwparts.aircooled.net/Flywheel-and-Brake-Drum-Torque-Tool-Kit-36mm-p/torque-tool.htm
http://vwparts.aircooled.net/Flywheel-and-Brake-Drum-Torque-Tool-Kit-36mm-p/torque-tool.htm
Zeke
Well-known member
VW axle nuts are easy to torque. You stand on a 8' bar until the wheel spins in place on the ground!
If you want more torque, you put on fatter tire!
If you want more torque, you put on fatter tire!
Outlawmws
Well-known member
I find that as I age I become an even more useful source for torque, with more and more body weight that I can apply to a cheater bar that I can stand on.
My car's axle nuts needed to be tightened to 340 ft-pounds, which just meant that I had to put my full weight on the bar 25" from center.
Even Jack's Blocks are painted that Sea/Green...
camarotoolman
Banned
About the rarest used tool there is. I've only had 3-4 in 20 years! I would go by the gym and hire a muscle man!
James E
Well-known member
What about an electronic torque measuring device at the nut and then just use a long breaker bar?
You can get a Craftsman one for about $90 and then use whatever length bar you have on it. Since you're only talking about 90 foot pounds or so, you should be able to get by with a breaker bar only a few inches longer than your torque wrench.
I suspect this will eat up less space than a torque multiplier.
You can get a Craftsman one for about $90 and then use whatever length bar you have on it. Since you're only talking about 90 foot pounds or so, you should be able to get by with a breaker bar only a few inches longer than your torque wrench.
I suspect this will eat up less space than a torque multiplier.