Well you could wear Knee pads helments elbow pads and maybe even gloves :P
The progressive safety gear is used in the speeds in the excess of 1.0 m/s while the instantaneous is used for sudden breaks.
epicyclic gear train
what are type of safety valves that are used in indastrys
Spur Gears.
spur
The higher the amount of gear reduction, produces the most torque. The type of gear system usually used is a planetary type, due to its ability to withstand the strain.
integers are used in skateboarding by using positive integers like 180 360 540 720 and 900
80w90
none, silly.
The AX5 used in Jeeps calls for 80w90 gear oil.The AX5 used in Jeeps calls for 80w90 gear oil.
Longboards
If you are asking about the rear differential, It is - SAE 75W90 synthetic gear oil The front is -SAE 80W90 GL-5 gear oil