The instructions for assembling the front wheels call for tightening the self-locking nut until the steering connector cannot move and then loosing the nut until the steering plate can just move. However, this does not seem possible. The flange bearing is thicker than the servo connector plate by quite a bit. No matter how tight I make the nut, the plate flops around loosely. It almost seems like there should be a washer to fill the space between the bearing shield and the flange bearing.
Any suggestions would be welcome.
Thanks.
Not sure which specific part you are referring to. If it’s regarding the wheel installation area, then the issue may be that our original instructions were not clear enough. Building the Car — SunFounder PiCar-V documentation The solution is to tighten the nuts, then loosen them just slightly.
The key is to have the connection a bit loose, just enough to allow the wheel to rotate freely, but not so loose that there is excessive play in the wheel. This balanced tightness ensures the wheels can spin properly without being overly loose.
Understood. But, is the servo connector plate (‘a’ in the attached image) supposed to be loose? Since the body of the flange bearing (‘b’) is thicker than the connector plate, tightening the screw has no affect on plate.
Thanks.
Mark
Insert an M4x25 screw through the steering linkage plate, 3 bearing shrouds, 3 hex front wheel mounting plates and the front wheel into the M4 self-locking nut.
From your pictures, does it look like there is something still attached?
The self-locking nuts have to be tightened enough that there is no slack in the gap.
But the screws need to be loosened slightly just enough to allow the steering plate to move, this ensures that the connections are not too loose and the wheels can turn flexibly.
Please show all plate parts.
Here is a video describing the problem: https://www.youtube.com/watch?v=zoH5R0D-6Cs
The problem is that the body of the bearing sits on top of the bearing shields. The bearing body goes through the plate, but the plate thickness is less than the height of the bearing body. Since the bearing body is right up against the bearing shields, tightening the screw cannot possible close the gap. What am I missing?
Thanks!
Mark
From your video, this is correct.
The flange bearing is thicker than the steering linkage plate to prevent the self-locking nut from locking the steering linkage plate when it is fixed, causing the flange bearing to jam against the wheel and not work when running the motor.
The flange bearing is thicker than the steering connecting plate, is for the bearing shield and steering connecting plate gap between the steering connecting plate, the steering connecting plate only gap loose, running the motor, the flange bearing and the wheel will not be stuck not work.
So the correct state, the steering connection plate must be loose.
Thanks!
Now that I have the whole car assembled, the looseness of the connection plate makes sense.
Mark
