Now I fixed my DSS level 2.9 axles, they are 3 years old/ 12700km drived. And condition was this.
And the axle welding was broken too. Axle is very loose, so it´s no wonder that the weld was cracked.
So, I welded that axle and made new washers for the rollers.
These are cheap low load tripoid joints. They are unsuitable for higher drive shaft angles or higher torque. These are fitted to low power cars. Commercial vans/light trucks and sports cars, this included Honda Type R models, are fitted with enhanced load tripoid joints. They are more expensive.
What is the difference?
The low load versions run open needle bearings and do not tilt the bearings on the tripoid. Instead, their outer rim is rounded and slides across the “race” in the bell housing of the joint. Their friction losses are higher and increase dramatically at higher drift shaft angles.
High performance tripoids use encapsulated bearings that tilt on the star of the tripoid and their outer rim is flat running flat across the race of the bell housing. They have lower losses and losses do not increase as much a drive shaft angles get larger.
See an old posting of mine explaining it incl. pictures of the two styles of tripoid joints.
The joints you use cost $15. They are crap.
Scuffers tried them a long time ago in his K20 racing Elise. He said they last 15 minutes on track. The Honda OE joints last entire seasons.
Shaft welding is an art. The best I have seen was to drill the shafts, insert a steel rod, put them together and electron beam weld them in vacuum.
The best solution is to have shafts made from one piece of steel. -> more expensive.
In the Lotus Elise conversion world, many do trackdays, runs superchargers and they have large drive shaft angles, it was found that this works:
Use Honda OE joints
use Honda OE or high quality boots, e.g. from SKF
For the inners use OKS422 grease
for the outers use Neo HPCC #1 grease ($$$)
if a single circlip groove is cut the wrong way, the shafts shear off. and we talk 1500 pound cars here with only 250 to 300HP.