Hello,
Do you have any idea how to prevent the unscrewing of the Lynxmotion hub screw from the axle ?
I think there are too many constraints when I rotate the track system.
Thanks,
Nicolas
Some areas to note:
- Can you remove a link on each track to reduce the slack, or is the optimal length of track for your confirmation between what you have now and one link less? At 2:17 in the second video, it seems you have two spacers for the front bearing support so if it’s too tight, perhaps remove one or two? Alternatively, it looks like you have used the 6-tooth sprocket at the upper corner, so perhaps the 9-tooth sprocket might add enough tension.
- Regarding the hub and set screw, the set screw is meant to be placed against a flat in the shaft (rather than the rounded part). For round shafts, a clamping hub is best. Can you create a flat on the shaft at the right location using a flat end mill and drill press (to keep it vertical)? There are other ways to “hack” a flat onto a shaft but the optimal result is something perfectly flat and perpendicular to the set screw. You might want to check the bottom of the set screw as well to ensure it’s still relatively flat.
Cute and nice video and looking forward to seeing the project advance!
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Thanks.
I can’t remove a link to reduce the slack. I think I will tension the track by increasing the height of the front 6-tooth sprocket support. I was advised to put a spring (suspension) to tension the track.
I use a 6mm D bore shaft, so there is a flat. Maybe I should use a flat end screw.
For information, the robot currently weighs 9.5kg.