Quick Torque Wrench Q - Page 3 - SV650.org

02-08-06, 12:14 AM

they do a very good torque wrench in argos for 20 quid,
it goes from 50-190 nm.

ive had mine for a year, used it well, and its still in calibration.
ive got a smaller one for 0-60 mn too that cost 50 from halfords.

02-08-06, 12:18 AM

For what it's worth, the argos one is now £14.99, and 28-210NM. If it does what it says on the tin looks like a good deal. http://www.argos.co.uk/static/Produc...er/7013887.htm Cant vouch that its the same one bikageboy commends though.

northwind · 02-08-06, 12:23 AM

Same as the Machine Mart one. Also the Lidl one

02-08-06, 12:35 AM

Quote:

Originally Posted by shao

For what it's worth, the argos one is now £14.99, and 28-210NM. If it does what it says on the tin looks like a good deal. http://www.argos.co.uk/static/Produc...er/7013887.htm Cant vouch that its the same one bikageboy commends though.

ok i stand corrected, that is the one i have.

02-08-06, 02:29 PM

Quote:

Originally Posted by stewart-250

There is no load on the wheel bearings from tightening up the axle, you cannot damage bike wheel bearings by overtightening the axle.

That may be so but something binds up when you tighten a curvy rear up too tight. One of the reasons I got a torque wrench.

Quote:

Originally Posted by stewart-250

Bike forums are full of posts from upset owners who have just snapped bolts (cam cap bolts seem to be a favourite) while trying to tighten them up to the factory torque setting.

That is often because people don't know how to use them or use a torque wrench with a 210nm range and expect it to accurately tighten a 10nm bolt. The reason that I have 2 torque wrenches.

northwind · 02-08-06, 05:39 PM

Or, because they ignore the condition of the parts, and consider a torque wrench a safety net, which it's not- it's no replacement for the correct approach.

02-08-06, 08:14 PM

It is disturbing when I read posts like these. The Halfords torque wrench is the absolute minimum standard you should use - and you will need both the 3/8 and 1/2 inch to cover the SV. And even then, I wouldn't use the 1/2 inch in the lowest 1/4 of its settings. The other downside of the Halfords units is that they will not do reverse threads.

Bolts maintain tightness by stretching - they elastically deform. This deformation is only maintainable over a very small range of lengths. If you do not tighten the bolt enough then it will work itself loose with vibration. If you overtighten it, it will go past the range of elastic deformation and into plastic deformation (permanently overstretched). When this happens it will eventually fail. Getting torque settings right is important! For very critical bolts it is normal to have an initial torque setting and then a further number of degrees that needs to be turned - this gives a more accurate 'stretch'.

02-08-06, 08:29 PM

Note to self. Never let sdusk see me working on a bike.

I have to admit to being a "HnnNNNngg, that feels about right" nut tightener merchant.

(Fnar, if applicable.)

21QUEST · 02-08-06, 08:30 PM

I use a torque wrench where I feel it's need and for everything else E-m unit of torque is used

.

Question

How many people actually tighten the sump plug/oil drain bolt to 21 N-m. Sounds quite high to me. I don't.

Cheers
Ben

02-08-06, 08:55 PM

Ben, sump plugs are a case of a big (relatively) bolt into very soft cast aluminium, and they do not stretch in this case. The torque is just to compress the copper or aluminium washer for a good seal. 21Nm does sound very high for doing that - I would have thought that 12 or 15 would be enough.

02-08-06, 12:23 AM	#23
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	Same as the Machine Mart one. Also the Lidl one __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

02-08-06, 05:39 PM	#26
northwind Moderator Mega Poster Join Date: Jan 2004 Location: In the garage where I belong Posts: 17,083	Or, because they ignore the condition of the parts, and consider a torque wrench a safety net, which it's not- it's no replacement for the correct approach. __________________ "We are the angry mob, we read the papers every day We like what we like, we hate what we hate But we're oh so easily swayed"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Torque Wrench	Splosh	Bikes - Talk & Issues	22	11-01-08 08:41 AM
Torque wrench	Kilted Ginger	SV Ecosse	6	16-11-06 10:05 PM
Torque Wrench	andyb	SV Talk, Tuning & Tweaking	13	16-02-06 10:43 PM
Which torque wrench ??	pepe	SV Talk, Tuning & Tweaking	9	06-05-05 07:48 AM
Torque Wrench	TSM	SV Talk, Tuning & Tweaking	21	28-04-05 09:06 AM

02-08-06, 12:14 AM	#21
Warren Guest Posts: n/a	they do a very good torque wrench in argos for 20 quid, it goes from 50-190 nm. ive had mine for a year, used it well, and its still in calibration. ive got a smaller one for 0-60 mn too that cost 50 from halfords.

02-08-06, 12:18 AM	#22
shao Guest Posts: n/a	For what it's worth, the argos one is now £14.99, and 28-210NM. If it does what it says on the tin looks like a good deal. http://www.argos.co.uk/static/Produc...er/7013887.htm Cant vouch that its the same one bikageboy commends though.

02-08-06, 08:14 PM	#27
sdusk Guest Posts: n/a	It is disturbing when I read posts like these. The Halfords torque wrench is the absolute minimum standard you should use - and you will need both the 3/8 and 1/2 inch to cover the SV. And even then, I wouldn't use the 1/2 inch in the lowest 1/4 of its settings. The other downside of the Halfords units is that they will not do reverse threads. Bolts maintain tightness by stretching - they elastically deform. This deformation is only maintainable over a very small range of lengths. If you do not tighten the bolt enough then it will work itself loose with vibration. If you overtighten it, it will go past the range of elastic deformation and into plastic deformation (permanently overstretched). When this happens it will eventually fail. Getting torque settings right is important! For very critical bolts it is normal to have an initial torque setting and then a further number of degrees that needs to be turned - this gives a more accurate 'stretch'.

02-08-06, 08:29 PM	#28
philipMac Guest Posts: n/a	Note to self. Never let sdusk see me working on a bike. I have to admit to being a "HnnNNNngg, that feels about right" nut tightener merchant. (Fnar, if applicable.)

02-08-06, 08:55 PM	#30
sdusk Guest Posts: n/a	Ben, sump plugs are a case of a big (relatively) bolt into very soft cast aluminium, and they do not stretch in this case. The torque is just to compress the copper or aluminium washer for a good seal. 21Nm does sound very high for doing that - I would have thought that 12 or 15 would be enough.