DTV Shredder Left Chassis Drive Shaft Bearing Cover

thingiverse

This is a bearing cover for the DTV Shredder drive shaft bearing on the left side which is exposed to the elements and impossible to replace without taking the whole vehicle apart. While installing I noticed a small crack in the rubber seal of the bearing so it was about time but this also does a great job of protecting a still intact bearing and prolonging its life significantly without exchanging it for a stainless steel type (which was a measure BPG took at some time, not sure though if this particular bearing was also part of the change). I printed this in ABS and tried to acetone-glue some thin 0.1mm washers to the plastic but they won't stick to it for long, that's why the surface looks so weird, I wiped it with an acetone-soaked cloth afterwards. Still I definitely recommend adding those washers (20x28x0.1mm) to reduce friction from the bearing circlip on the inside and the brake disk hub which moves on the outside. Also that's the reason why I didn't add an inner stop because I wanted the depth position of the cover to be as flexible as possible, so pay attention while installing that there isn't too much tension from the circlip on the inner diameter by pusing the cover too far onto the drive shaft. I needed to sand down the inside surface a little bit but I think my printer configuration was somewhat off, the design should fit just fine with 57mm diameter. Installation is quite easy, involving those steps: 1. Loosen chain tension 2. Remove chain 3. Remove chain guide 4. Remove sprocket circlip and sprocket 5. Remove brake caliper 6. Remove brake disk 7. Take care of the wedge 8. Remove brake bracket 9. Install 0.1mm inner washer 10. Fill cover with grease, install 11. Install 0.1mm outer washer 12. Re-assemble from step 8 backwards