I have been worked in a company in China about 16 years ago supply the CV components to RCV for their CV rebuilding kits, so I knew the RCV the successful story.
On this RCV Minotaur axle, let me say, some ones use lift kits and big tires to lift the ATV. so the angle of the CV axle and the torque on it increases, this cause the CV axle failure often when rocky terrain and mud race, mainly shaft broken. how to make the shaft more stronger? 1,improve the shaft profile to decrease the stress concentration, 2,use best strength steel like 4340 and correct hard treatment (in China, we use 5140 mostly, which can meet the original design for torque requirement). 3 increasing the shaft dimension, this is easiest way, but will affect the CV axle working angles, for most ATV, the outer CV joint with wheel is fixed joint of BJ style like GKN's, the allowance angle is about 49 degree, the inner CV joint with differential is plunging joint of DOJ style, the allowance angle is about 25 degree.If the shaft diameter increased, the allowance angle will decrease, specially for DOJ CV joint, so we can use the fixed joint with special inside form to replace the plunging joint to achieve the big working angle, and use the shaft travelling with the inner race to achieve the plunging, by this way, the max allowance angle of inner CV joint will be about 44 degree, and the shaft travel is still about 2 inch (50mm), and the lager diameter shaft strength increased than stock. from my many years' working experiences on CV axle, I think RCV this Minotaur axle is this style, I just want to share this thoughts with others. RCV is the best company in this market who gave the player the strongest axle, specially for the enthusiast with extended Aarm of long travel, RCV is our model we study. it's lucky for me here to talk to everyone on the axle and accessories for ATV and UTV. Thanks!
