So basically, I have to tighten a linkage bolt to 5.5nm . However, on my park tools torque wrench, due to its 0.2nm increment, there are only options of 5.4 and 5.6. Which should I go for? I know it is a bit tricky here. Let me know how you think. Cheers
I'd go for the 5.4nm myself.
and then go a little bit more but not quite enough to go to 5.6
it's likely to be about 1/32 of a turn between the two or something. I wouldn't fret too much.
when did you calibrate the torque wrench?
Can you not just go to 5.4 and then about half an increment towards 5.6?
best bet is to abandon the fancy tool and count [I]'tinks'[/I] as you heave on the hex key...
when did you calibrate the torque wrench?
Indeed. The torque value is to try and control the tension in the fastener which due to variations in friction at the threads and under the head of the fastener could vary 50% in either direction very easily. In other words, either one will be fine, I'd go slightly tight.
I tried both 5.4 and 5.6 on it. The bolt under both torque values stop at the exact same position. I end up going for 5.4nm.
Torque wrench is less than 2 months old.
If the linkage is slightly stiff then you have over cooked it. 😉
reality - it wont matter at all if your 5.4 or 5.6.
Torque wrench is less than 2 months old.
So it's 2 months out of calibration 😉
Torque wrench is less than 2 months old.
Means nothing. It spent a while in a container bouncing around the seven seas before it got to the warehouse then the shop. It'll be close enough for rocknroll with bigger differnces but the jump you're discussing is miniscule in terms of calibration.
Don't forget that if you've lubed or locktited the bolt threads then you may as well put the torque wrench away unused for all the good it will do you...
I'd agree with go for the bigger number and back off if it feels tight... OR... take advantage of the analogue scale and rebelliously adjust the tool between the two numbers.
"Don't forget that if you've lubed or locktited the bolt threads then you may as well put the torque wrench away unused for all the good it will do you..."
unless you know the lubricity co-efficient for the lubricant used.... not that iveever seen it for bike related lubes but the stuff i use at work comes with it.... we do torquing up to 30000 ftlbs.
5.4Nm or 5.6Nm?
I would like to see the torque wrench and the calibration certificate. Then the tester. The difference is sweet FA.
In fact I think the manufacturer is taking the urine.