Lateral movement. Grab the end (near gearbox and then near differential) and try to wobble it left to right or up and down (this checks the needle bearings). Then try to make the prop shaft move from front to back ( use both hands and try to make it move away from the diff/gearbox). Finally but most importantly. (you need another person to do this properly), Check for lateral movement when the vehicle is put in gear (yes you have to have the vehicle jacked up and put on stands). Unnatural noises and movement will tell you all lol..
This would depend greatly on your prop shaft... Water craft, Airplane... Car? But two test that should apply to all categories might be: vibration and fatigue.
1) Drive-shafts are used on FWD but Prop-Shafts are used on RWD or 4WD. 2)A Drive-Shaft has final drive via a CV joint but a Prop-Shaft has final drive via a Differential. 3)A Drive-Shaft is smaller, lighter and saves space by not having a transmition tunnel.
Unbolt the prop shaft.
The shaft itself rarely needs to be replaced, but it is often cheaper to replace than repair. The only thing that `requires`replacement of the shaft is if the shaft itself is bent or damaged. Joints, slip yokes and such can be changed.
It allows a reduction in transmission tunnel height.The critical speed of the total prop shaft arrangement is higher without increasing the diameter (reducing shaft whip).
About half a stone give or take a few pounds
right behind the prop, on the same shaft
This depends entirely on what make model and year the machine is as well as why it is being driven. It is not safe to use it as a loader with the prop shaft missing, but it might be if it is just being moved.
About 3 foot
Jason Leonard of England (114).
The Prop shaft (front drive shaft) has a ball type cv joint that sits in bearings that connects to the transfer case. This is most likely shot and you need a front prop shaft (front drive shaft) complete with rubber boot and differential cv universal joint.
1. Driveshafts are smaller and lighter. 2. A prop shafts final drive goes through a dfferential, whereas a driveshaft uses a cv joint.