Does anyone know what torque should be applied to the screws when assembling these v-slot parts? I have some 45mm motor mounting bolts(m3)... some m5 tee nuts about 10mm... etc I know this may be a strange question but I paid all this money for a torque wrench so might as well use it and have all those parts locked tight together on the frames and motors.
That's a good question Dude and I am not completely sure of the answer, but I am interested if you are able to find out. It would be nice to pass it along if someone else has this question down the road.
Are the tee nuts steel? Are these torque ratings the max for the screws? Isn't there going to be deformation of the aluminum if you overtighten steel screws? Some of the screws go directly into the aluminium so they may strip if overtightened...
Valid points. New chart http://www.enfieldmotorcycles.com/forum/index.php?topic=10638.0 IMO it's more likely you would strip threads by over torque than to deform the extrusion. YMMV.
For those interested in this topic, I found an online Bolt Torque Calculator: http://www.futek.com/boltcalc.aspx?mode=metric Regards Joe
Nice find. EDIT: Note that the recommended torque is the recommended torque for a minimum engagement of 1.5 times nominal bolt diameter. If your engagement length is less than 1.5 times the nom. dia. then do not use the recommended torque provided.
Hi Joe, thanks for your hint! If I understand right you can define the length of engagement and the material under "Mating Thread Data". Do you think that the results calculated for a length of engagement of less than the nominal bolt diameter are not accurate?
When you input a value less than 1.5times the bolt diameter you will get the same value as 1.5 times the bolt diameter. If you torqued to those figures there is a greater likelihood of thread tear out the thinner you go.
Here is an example: Same bolt. Different depths. The first is at .250 depth and there is a warning. The second is at the minimum recommended engagement depth. No warning. Same exact figures. Warning! It is highly recommended that a bolt's engagement length be at least 1.5 times its diameter. Application Data Major Bolt Diameter: 0.250 in Bolt Thread Pitch: 20 Bolt Proof Strength: 44000 psi Recepticle Length: .250 in Recepticle Strength: 40000 psi Applied Tensile Load: 0 lb k Factor: 0.2 Recommended Torque 43.75 in-lb (3.646 ft-lb) (4.944 N-m) Resultant Tension:875.1 lb Maximum Torque 58.34 in-lb (4.862 ft-lb) (6.592 N-m) Resultant Tension:1166.8 lb Application Data Major Bolt Diameter: 0.250 in Bolt Thread Pitch: 20 Bolt Proof Strength: 44000 psi Recepticle Length: 0.375 in Recepticle Strength: 40000 psi Applied Tensile Load: 0 lb k Factor: 0.2 Recommended Torque 43.75 in-lb (3.646 ft-lb) (4.944 N-m) Resultant Tension:875.1 lb Maximum Torque 58.34 in-lb (4.862 ft-lb) (6.592 N-m) Resultant Tension:1166.8 lb
Hello, I use to use the following webpage Online recommended bolt torque calculator based on metric and vdi 2230 I hope it helps Best regards
