So I wanted a neat electronics box, so made up and printed some mounts for the parts
Nothing particularly complicated here, just quick sketch up designs and epoxied into the Aluminium box.
The red ones below are for the esc. I;ve tried to keep it up and away form the sides / bottom just in case any water gets in.
You can also see the holes for wires etc…
Now with some pipes in and the glands.
The glands have all been epoxied in now, and the radio electronics are in.
The brass tubes allow the glands to be tightened on the water pipes. The pvc water tube will be glued and clamped to either side
Subtle mod on the safety switch wiring. I realised it was killing power to the esc, not the signal wire. I’ve read on here killing esc power under load is a bad idea!
Also note the safety switch glued in place inside the box, and a couple more printed mounts for the receiver and bec on the lid.
The connector block is only there for testing. These wires will be soldered once all installed.
The glands are as follows.
Three on the top go to the battery compartment. facing inwards as I had the space!
- Main +48v (12s - 2x 6s in series). Through a circuit breaker.
- Secondary +24v (6s) feed from one of the batteries. This is needed as the dual output bec (12v for pump + 5v for elecs) can only take up to 6s. The extra cable seemed simpler than adding another step down circuit.
Along the bottom are
1,2 & 3. The three phase cables going to the motor.
4 & 5. The in and out for the water pump.