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Mitch's AR2 Build Log
In Robot Builds
Mitch's AR2 Build Log
In Robot Builds
Mitchell Lichtenberg
Jan 04, 2019
OK here are my assembly comments: P51 - the turret housing screws are all 10mm (the flat heads are also 10mm). 14mm screws are too long and bottom out on the J3 spindle. P51 - M3x14s are only just barely long enough for the motor housing. I suggest deepening the counterbore by 1-2mm (double check against the motor holes). only a few threads holding the motor on. P53 - When mounting motors, some indication of which way the wires should exit would be helpful, it's hard to figure out from the pictures sometimes. P54 - The set screw that goes through the tube should be 10mm, the 5mm one is too short to see the head protruding on the inside. P54 - there is only one hole in the J4 shaft for the set screw to protrude through. P55 - the J4 motor mount bracket's holes are too small for a close fit M3 screw to fit through. They can be drilled with a 1/8" drill. P56 - the POM nut fit is too tight to J5 carrier. I drilled mine out with a 0.5" drill and now it's still a press fit. P56 - a deburring tool is a nice hand tool for creating the countersink manually and accurately (a power tool might remove too much material). P57 - the J5 carrier looks like 2 pieces in the photos but is actually 1 pice. The small clamp piece looks like it is better secured with a SHCS instead of a flat head. P57 - There aren't any M3x4 set screws in the klt. I used the longer ones. (to hold the 3mm bearings) P57 - the 3mm rods were already cut to 85mm. P60 - an M4x10 is too short to mount the J5 bearing to the tension block. I used a M4x14. Could bore the post a little deeper. P61 - my housing has no hole on the back side, and the one on the front side is tapped for M4., not M3. I lost an M3 somewhere in there, I can't find it :-). Used an M4x5. However, this means that my housing could be 180 degrees out of whack, so I'm looking it over again. Removing the housing will be problematic if I need to take it apart, the fit was snug. P62 - Manually rotating the J5 motor shaft is easier said than done. P65 - J6 motor fit is very tight, even with the sticker removed. I may need to bore out the J6 housing to get it to fit.
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Mitchell Lichtenberg

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