General topics » Moron with torque wrench

So today I fitted a set of OEM crash bars to my 1200RS. I took note of the required torque settings and used my newly acquired torque wrench to nip up the torx bolts. But. The lower rear bolts (T50's I think) needed to be 55 Nm; one side worked OK but on the other side my socket adapter sheared before the wrench 'clicked'. Bugger bugger bugger.

Where did I go wrong? My torque wrench has a 1/2" drive, stepped down via two reducers to 1/4", which held the Torx bit holder. It's the 1/4" square adapter which has sheared. I certainly felt uncomfortable tightening up; it 'felt' as if I was applying too much force to me but I went against my instinct with predictable results...

I'm reasonably familiar with the use of a torque wrench so am happy it was set correctly, though as BMW newbie, less so with torx bolts. I'm sure there was an obvious error here?!

Zitat von Freddyfruitbat im Beitrag #1

---

So today I fitted a set of OEM crash bars to my 1200RS. I took note of the required torque settings and used my newly acquired torque wrench to nip up the torx bolts. But. The lower rear bolts (T50's I think) needed to be 55 Nm; one side worked OK but on the other side my socket adapter sheared before the wrench 'clicked'. Bugger bugger bugger.

Where did I go wrong? My torque wrench has a 1/2" drive, stepped down via two reducers to 1/4", which held the Torx bit holder. It's the 1/4" square adapter which has sheared. I certainly felt uncomfortable tightening up; it 'felt' as if I was applying too much force to me but I went against my instinct with predictable results...

I'm reasonably familiar with the use of a torque wrench so am happy it was set correctly, though as BMW newbie, less so with torx bolts. I'm sure there was an obvious error here?!

---

1/4 inch drive is too small for 55nm. 3/8 is better. I reserve 1/4 drive for M6 or smaller.

Yes 1/4 is way too small.
Go bigger, 1/2 inch if possible, no less than 3/8ths
Size matters
Alan

Thanks, so that seems pretty clear cut then!

The Torx set I bought along with my RS is in fact this one. It comes with a 1/4" drive bit adaptor, which is what I (foolishly) attached to my torque wrench via reducers.
I've just been having a look round online, and I'm unclear - are there adaptors available which will take me straight from the 1/2" male on the torque wrench to the hexagonal ends of the Torx bits? Or are there different Torx bits with beefiere ends? I'm not finding either...

Just get a set of 3/8 drive torx bits. They aren't expensive and will do the torque you need.

You get what you pay for bin those and get a good quality set in 3/8 drive and get good 3/8 drive ratchet and extensions and non ratchet handle also only use good quality 1/4 drive for small ones you round out the torx or allen head using cheep tool you are in more trouble then a one arm paper hanger .

3/8 minimum for T50 and 55Nm. Buy new Torx sockets like this one.husky-socket-sets.jpg - Bild entfernt (keine Rechte)

My Torx kit is 3/8th drive up to T40 then 1/2" above T40

Similar to this without the 1/4" smaller ones but same make. Not expensive but not had any issues with my light use

https://www.amazon.co.uk/PRO-13pc-Torx-B...ords=torx+tools

Zitat von Freddyfruitbat im Beitrag #5

---

Thanks, so that seems pretty clear cut then!

The Torx set I bought along with my RS is in fact this one. It comes with a 1/4" drive bit adaptor, which is what I (foolishly) attached to my torque wrench via reducers.
I've just been having a look round online, and I'm unclear - are there adaptors available which will take me straight from the 1/2" male on the torque wrench to the hexagonal ends of the Torx bits? Or are there different Torx bits with beefiere ends? I'm not finding either...

---

I'm now considering myself to have been well educated and am going shopping!
Thanks very much for all the really helpful advice...

what's a wrench!

Zitat von Bob Aint Stoppin im Beitrag #6

---

Just get a set of 3/8 drive torx bits. .

---

Zitat von wessie im Beitrag #10

---

I'm a fan of Halfords Professional (now called Advanced) tools - no quibble replacement if anything breaks

I used a 3/8" drive Torx bit with a hollow security point for a heavy duty application (undoing bolts on the BMW S1000XR luggage brackets that were loctited in the factory 3 years earlier). It snapped and I then used a solid point drive to complete the job. Halfords replaced the bit without any question as to what caused the break.

I have this set https://www.halfords.com/workshop-tools/...het-spanner-set which comes with the hollow point Torx bits which was quite a bit cheaper 4 years ago. I already had their Torx bit set.

---