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Low range torque wrench

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Sister Sledge
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PostPosted: 09:07 - 10 Dec 2018    Post subject: Low range torque wrench Reply with quote

As the title suggests - I'm looking for advice on finding a decent low range torque wrench.
Although I have one, the range just doesn't go low enough to be able to do some of the smaller bolts that can be found inside an engine. Get it wrong and I will have catastrophic failure..

It doesn't matter about the actual drive size as I have heaps of sockets and adapters. Even a decent digital torque reader that fits between a wrench and bolt would be useful.
I'm looking for a decent torque wrench with readings from 5 ft lbs to around 15 ft lbs.
Can anyone recommend what Santa should drop down my chimney??
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evilzed
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PostPosted: 10:31 - 10 Dec 2018    Post subject: Reply with quote

I have a Wera 05075393001 which works really well and isn't cheap. I find if you use it on the really low settings you barely feel the click so apply pressure very slowly.

Alternatively get a low range electronic torque wrench, they're very accurate and you get a beep when the range is reached. I've seen them for as low as 2nm. Not cheap also but a torque wrench isn't something you wanna skimp out on IMO after a stripped sump bolt.

I've used this the low range version of this and it seemed to be very accurate and cheap
https://www.ebay.co.uk/itm/1-5-1000nm-Digital-High-Torque-Wrench-Adapter-3-4-1-4-3-8-1-2-Drive-Microtorques/132844973090?hash=item1eee2d6c22:m:mGYEcSp_viZbMhCg_0kdEgg:rk:2:pf:0
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B5234FT
Brolly Dolly



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PostPosted: 10:36 - 10 Dec 2018    Post subject: Reply with quote

I have a quarter Teng one:

https://www.amazon.co.uk/dp/B000Y8J2CA/ref=asc_df_B000Y8J2CA57388505/?tag=googshopuk-21&creative=22110&creativeASIN=B000Y8J2CA&linkCode=df0&hvadid=208050023643&hvpos=1o1&hvnetw=g&hvrand=10609740931784604215&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=1007311&hvtargid=pla-420978961569&th=1&psc=1
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Nobby the Bastard
Harley Gaydar



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PostPosted: 11:37 - 10 Dec 2018    Post subject: Reply with quote

Got a halford professional in a sale. It's got a nice positive click.
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Confusion
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PostPosted: 11:45 - 10 Dec 2018    Post subject: Re: Low range torque wrench Reply with quote

Fourte wrote:

I'm looking for a decent torque wrench with readings from 5 ft lbs to around 15 ft lbs.
Can anyone recommend what Santa should drop down my chimney??


A typical 1/4" torque wrench will cover 5-25Nm. You can buy a "nice"
branded one like Norbar or Teng. Alternatively, you can buy a cheap
generic one. These are generally all identical apart from the brand.
Clarke, Draper, Workzone (Aldi)............

The cheap ones start at around £20 - premium brands from £50 to
several hundred.

Regardless of which torque wrench you buy, you should check calibration
out of the box and at regular intervals. Calibration is trivially easy using
a digital luggage scale.

If you don't need to use a torque wrench very often, you could just
use a digital luggage scale with a socket and T-bar instead.
This will be as accurate as the best digital torque wrenches.

I use a cheap 5-25Nm 1/4" drive type from B&Q. I did have to
adjust calibration when it was new. It has remained accurate
without further adjustment for the last few years.
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Sister Sledge
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PostPosted: 11:47 - 10 Dec 2018    Post subject: Reply with quote

Excellent replies folks.
As has been mentioned you really don't want to skimp on these things - to start with this is for the dreaded starter clutch bolts on a DRZ400. Tiny M6 bolts and should one come adrift then it's bye bye stator and other bits..
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Confusion
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PostPosted: 13:25 - 10 Dec 2018    Post subject: Reply with quote

Fourte wrote:

...you really don't want to skimp on these things...


You don't need to spend a fortune. An Aldi suitcase scales gives
you digital torque wrench accuracy for £3.49.
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cb1rocket
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PostPosted: 14:04 - 10 Dec 2018    Post subject: Reply with quote

Confusion wrote:
Fourte wrote:

...you really don't want to skimp on these things...


You don't need to spend a fortune. An Aldi suitcase scales gives
you digital torque wrench accuracy for £3.49.



I'm curious of your luggage scale calibration. Can't quite picture how you have it set up to do so.
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Nobby the Bastard
Harley Gaydar



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PostPosted: 15:29 - 10 Dec 2018    Post subject: Reply with quote

Using luggage scales is a bit of a faff.
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Confusion
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PostPosted: 16:11 - 10 Dec 2018    Post subject: Reply with quote

cb1rocket wrote:

I'm curious of your luggage scale calibration. Can't quite picture how you have it set up to do so.


Torque is simply applied force multiplied by the length of the lever.

To test a 3/8" torque wrench, I use a motorcycle front axle tool
clamped in a bench vice. The wrench fits the 3/8" square hole
at either end of the tool. You can test different drive sizes using
the appropriate socket or adapter.

1kg = 9.80665N (at standard gravity) . 9.8 is close enough.

A 1kg force applied to a 1m breaker bar gives torque of 9.8Nm.
A more practical example is 24kg measured at 0.43m (the length
of my 1/2" torque wrench).

24×9.8×.43 = 101Nm

Beware of measuring much beyond this level. Some
cheap luggage scales are rated for 40-50kg. In practice,
there are limits to the amount of force you can apply
to a Chinese plastic handle and the metal or plastic
fittings on the strap.
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Nobby the Bastard
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PostPosted: 17:04 - 10 Dec 2018    Post subject: Reply with quote

Still a lot of faffing when you could just buy a decent tool that's actually designed for the job.
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Confusion
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PostPosted: 17:18 - 10 Dec 2018    Post subject: Reply with quote

Nobby the Bastard wrote:
Still a lot of faffing when you could just buy a decent tool that's actually designed for the job.


I have three torque wrenches. I only use the luggage scale to
check calibration once a year.
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Confusion
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PostPosted: 17:22 - 10 Dec 2018    Post subject: Reply with quote

Nobby the Bastard wrote:
Got a halford professional in a sale. It's got a nice positive click.


They were made in the UK by Norbar. The latest stock looks different
to what they were selling up to last year. I wonder if the new ones are still
from the same source?
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cb1rocket
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PostPosted: 17:39 - 10 Dec 2018    Post subject: Reply with quote

Confusion wrote:


Torque is simply applied force multiplied by the length of the lever.

To test a 3/8" torque wrench, I use a motorcycle front axle tool
clamped ...................

......


....



ahh i get ya. Thanks for explaining.
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Sister Sledge
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PostPosted: 10:57 - 11 Dec 2018    Post subject: Reply with quote

All sorted cheers!
I've gone with the small Teng wrench that has a 1/4" drive. I'll check the calibration upon arrival.

I'd considered those electronic boxes but think they'd get in the way when reaching into tight spots where the frame covers stuff.
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evilzed
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PostPosted: 11:14 - 11 Dec 2018    Post subject: Reply with quote

The Teng wrench should be good, decent brand.

With the bulky electronic box units you can use extensions, it won't ruin the end value

https://www.youtube.com/watch?v=tRR96ILGORU
https://youtu.be/wNcCwdtfcOU?t=359

The Halford's/Norbar wrenches are great too, I have 2 but they don't have a low range version, using the 8-60nm version in the low range is a bit iffy IMO
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Riejufixing
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PostPosted: 15:07 - 11 Dec 2018    Post subject: Re: Low range torque wrench Reply with quote

Confusion wrote:
A typical 1/4" torque wrench will cover 5-25Nm. You can buy a "nice" branded one like Norbar or Teng. Alternatively, you can buy a cheap generic one. These are generally all identical apart from the brand. Clarke, Draper, Workzone (Aldi)...........


I bought a thing called a "Toolzone Professional 3/8" Drive Torque Wrench 5-25 Nm" earlier this year. It was £22.50. I have seen exactly the same thing on sale for £60. It was dead on when measured halfway through its range. Nearly got a Ting one which was same with a nicer colour but more dinero.
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bikenut
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PostPosted: 11:01 - 18 Dec 2018    Post subject: wrench Reply with quote

I have 5 torque wrenches now, most from the old days.

I have 2 3/8 drive britool, one cheapo 1/2 inch drive, one new britool ( made in bloody italy!!!!! ) 1/2 inch drive and an electronic clarke one for much higher torque ranges, like car front hub centre nuts.

This was the cheapest option for the higher ranges, else get a quite expensive torque wrench.

The electronic one is quite good with a bleeper when very close to the set value.
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misscrabstick
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PostPosted: 10:39 - 20 Dec 2018    Post subject: Reply with quote

Go to machine Mart, get a Clarke one, not too pricey, works just fine, I use one at work for things like those little cam cap bolts on a lot of cars these days.
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Sister Sledge
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PostPosted: 11:35 - 20 Dec 2018    Post subject: Reply with quote

misscrabstick wrote:
Go to machine Mart, get a Clarke one, not too pricey, works just fine, I use one at work for things like those little cam cap bolts on a lot of cars these days.


It was sorted several comments earlier Wink
Thanks for the help though.
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