During my build I placed my chassis on a stand with the the suspension completely unloaded. As I spun the rear drive shaft I noticed some binding and the rear A-arm jumping about 1mm on the outside.
I explored this and found that the universals to the rear wheels were the culprit. They were just and I mean just touching the outer edge of outdrive cup. When the out drive slot was up and down it would allow the universal to drop into the slot and for the A-arm to drop as well. When the out drive was spun the shaft would then then touch the outer edge of the out drive cup and lift the A-arm.
Resolution to this is to adjust the rear down stops an additional 1mm past the factory recommended 3mm to make it an absolute minimum of 4mm.
This could be an isolated issue with my setup and build but its worth looking at. I would hate to see someone snap a universal while the suspension is unloaded. A good way to check is to look for rub marks on the outer edge of the cup or on the universals, or placing it on a stand and slowly spinning the wheels.
I explored this and found that the universals to the rear wheels were the culprit. They were just and I mean just touching the outer edge of outdrive cup. When the out drive slot was up and down it would allow the universal to drop into the slot and for the A-arm to drop as well. When the out drive was spun the shaft would then then touch the outer edge of the out drive cup and lift the A-arm.
Resolution to this is to adjust the rear down stops an additional 1mm past the factory recommended 3mm to make it an absolute minimum of 4mm.
This could be an isolated issue with my setup and build but its worth looking at. I would hate to see someone snap a universal while the suspension is unloaded. A good way to check is to look for rub marks on the outer edge of the cup or on the universals, or placing it on a stand and slowly spinning the wheels.
