Queenpin Holes
For those that don’t have duality trucks, changing both bushings requires pulling the queenpin up through the truck baseplate. So I could swap bushings easier, I drilled a hole through the deck in the front and rear. This lines up with the queenpin, so I’m able to remove it to change bushings without needing to remove the trucks from the deck.
Louie likes the plan
In the rear, I had to take a drill bit to the 3D printed 5 degree wedge plate. Not pretty, but it works.
[REDACTED]
The queenpin holes were very useful when playing with REDACTED at an i2g night which involved removing the gear drives from the hanger
Looking great
Motor Upgrade
Since swapping the Apex motors to Reacher 6455’s, the board has been behaving weird.
- under hard braking, when slowing to a stop, the motors would cut out around ~5mph (faster if braking hard)
- Additionally, @Dinnye discovered that it had a tendency for cutouts at high speed, probably because the current was set too high. Fix this by lowering the current, but the board didn’t have as much power as I liked anymore.
- Also, there was something weird with the hall sensors, so she was operating sensorless.
I did what I totally should’ve done when I first build the board and replaced the 6455’s with 6485’s from @Mobiusray
Removing 6455s
So… the locktight didn’t hold. both pinions slid right off, no heat needed. Guess that’s helical for you..
Looking inside the drives, there is visible wear where the pinion was rubbing on the inside of the casing. (Interesting, this wear only exists on the left side, the right seems fine).
I think this explains the braking cutouts…The pinions are pushed outward into the casing, locking up, causing a vesc fault, which would then releases the brakes.
The pinions are definitely starting to show their wear, but should have some life left in them.
After some casual 8pm angle grinding to cut down the motor shafts,
I loctited the pinions on. I used way more green then previously, and gave them 48 hours to cure.
Bish bash bosh
Internally, I was a lot more intentional with my strain relief. There should be a lot stress on the motor cables now.
Vesc reprogramming went without issues. I updated the vesc firmware from 5.03 to 6.06, and increased motor current to 120A (lot better then the 60A on 6455s!)
Looking great, hoping she doesn’t throw me at garage tonight.
