21 replies to this topic

[Andy_VX]

Really struggling to find a decent 1/4 torque wrench that's small in size and goes down to 8nm.

 

Can anyone recommend one they've bought? Looked at Screwfix, Machine Mart and Halfords but can't find anything suitable. 

 

Needs to be small as i'm using it to tighten the manifold studs. If anyone has one I could borrow that would be even better!

[ChrisS1]

Maybe have a look at some of the ones available for bikes, they're normally pretty small.

[ChrisS1]

http://www.chainreac...-m/rp-prod11142

[Madmitch]

Have a look on Ebay, Teng 1492AG-E goes down to 5Nm eBay item number:262397826955 £45 or less, a Sealey STW101 goes to 5Nm and similar money plus loads of others used or cheapos.  Look at the Venzo 1/4" which is a tiny beam type really made for bikes about £27 incl post from the USA.  Hope that helps. 

[siztenboots]

get new studs and nuts , the should be a copper colour for the new material and have a torx drive on the stud. run a tap in the head threads to clean them up , and a bit of threadlock on the stud . make sure you refit the silver bracket that goes across all the studs.

 

[Andy_VX]

Thanks for the suggestions, hadn't thought to look at bike shops! The Teng version looks pretty good but the X-Tools one is almost half the price so i'll probably go for that since i'll not use it often. 

 

I've bought all new studs, nuts and gaskets. 

[ChrisS1]

[Pidgeon]

You use a torque wrench on manifold studs

[Andy_VX]

EFA, Manifold nuts 

[chris_uk]

Teng tools do one.

[D-DAWG83]

My Halfords one goes down to 8, its at the bottom of its range, but thought it would be fine. Dont blame you for the studs though, you dont want to risk cracking the head.

[Nev]

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

Edited by Nev, 03 February 2017 - 10:12 AM.

[Spitfire Engineering]

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

 

I can see why your brass nuts keep coming undone Nev  

 

8nm = 6ft/lbs

[chris_uk]

6ft/lbs is practiacally hand tight!

[Nev]

 

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

 

I can see why your brass nuts keep coming undone Nev  

 

8nm = 6ft/lbs

 

 

Ok, 6 Lb of weight, at least my process was correct!

 

I find the brass nuts get a smooth glaze on their mating face to the manifold, which in conjunction with vibration makes them unwind sometimes. I tired roughing them up with grit paper, but they are so soft that they re-glaze/smooth.

 

Edited by Nev, 03 February 2017 - 07:33 PM.

[Spitfire Engineering]

 

 

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

 

I can see why your brass nuts keep coming undone Nev  

 

8nm = 6ft/lbs

 

 

Ok, 6 Lb of weight, at least my process was correct!  

 

 

Theory was good though it should have been half of the spanners weight, I was just wondering if you were using a really long (6ft) spanner!  

 

Have a good weekend

 

Gaz

[Nev]

 

 

 

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

 

I can see why your brass nuts keep coming undone Nev  

 

8nm = 6ft/lbs

 

 

Ok, 6 Lb of weight, at least my process was correct!  

 

 

Theory was good though it should have been half of the spanners weight, I was just wondering if you were using a really long (6ft) spanner!  

 

Have a good weekend

 

Gaz

 

 

Surely the ratio of spanner weight to take into consideration is a function of it's length, not just 1/2.  

Edited by Nev, 03 February 2017 - 08:06 PM.

[Spitfire Engineering]

 

 

 

 

Use your existing wrench or spanner, simply measure 12" from the centre of rotation and hang a 1 Lb weight off it.

 

Simples (and also precisely accurate if you take into account the wrench/spanner weight).

 

I find my brass nuts come undone slowly, so I have to wrap wire round them to lock them down sometimes.

 

I can see why your brass nuts keep coming undone Nev  

 

8nm = 6ft/lbs

 

 

Ok, 6 Lb of weight, at least my process was correct!  

 

 

Theory was good though it should have been half of the spanners weight, I was just wondering if you were using a really long (6ft) spanner!  

 

Have a good weekend

 

Gaz

 

 

Surely the ratio of spanner weight to take into consideration is a function of it's length, not just 1/2.  

 

 

Separate the spanner and the weight as it is much easier (OK you could weight them as one and find the CofG of the total system but that's pretty complicated compared to separating them for this calc)

 

If you wish to take the weight of the spanner into consideration you need to know where the CofG of the spanner is in order to calculate the moment.

 

For most spanners thats about half way along, but if you wish to correct for 22AF at one end and 24AF at the other simply find the Cog G by balancing the spanner and marking the centre.

Don't forget the applied force is between the jaws not at the end of the spanner so to correct for this suspend the weight at the other end of the spanner from the same position between the jaws then your spanner CofG does not need to be corrected.

 

No need to make any dimention anything in particular just multiply the lengths and weights separately and add them up.

 

Edited by Spitfire Engineering, 03 February 2017 - 08:20 PM.

[Nev]

You remind me of Fezasus.

 

Anyway, the principle of what tried to say is fine for someone not wanting to buy a small torque wrench.

 

[chris_uk]

Id just buy a torque wrench