I agree with rmgill, there would be more, and perhaps continuous, loading going thru fewer wheel stations.
Ferret bevel box failure-Perhaps some failures are overdue. 20 years of squadie's abuse, followed by 20 years of neglect may set the stage for the nasty. Unless you can say "I went thru it" it's hard to know what's inside.
Keep in mind these[Stalwarts] are robust. They were built for extreme off road duty,and as HRD points out, while carrying a huge load. High load thru a small number of stations happens off road. And probably while in a low gear. The forces, hence danger, is greatest in the lowest gears. yet shock loads far exceed anything the engine can dish out. That's always a concern. And,there is always some factor of safety built in.
I am sure my driving will be an easy miles for this old girl. It will be street (or in water). Predictable and consistent. No racing, hole shots ,jumping, hill climbing, or tug of war contests for me. Just shows, parades, grocery store... Keep the difficult service aspect in mind, and if breaks add it to the list. Remember having a -SELECTABLE- driveline is the goal. Then choices can be had.
Wind up is hard on the driveline, too. Tracta joints may be the weakest link - more vulnerable to wind up than loading.
The purpose of reduction hubs is so the bevel boxes/shafts run higher speed with reduced load. In the Stalwarts case maybe also to fit beside the fuel tank. I'll bet that any diff in bevel gear diameter has something to do with cargo.
Finally, reliability is a relative term... these things are British.
JimK
HRD,
Not sure which vehicle your question directed at. Stalwart shafts are f to r to
ne can be pulled disabling drive to just one wheel.The others will still be driven.The front drive shaft front c-clip is tough to get your hands on. It can be done(so I have read).Apparently the front bevel boxes can be removed without tank(and crane) removal. From the looks of of mine that is easier, but not an easy task.And on my list. I currently have the front sun wheels out.