Hey. I haven’t made build threads before. But I have gotten so much from this forum so I thought I would share too. I’m a cnc machinist. I designed some parts and cut them at work. I’m happy to share any files, just ask. Build is already complete, so this is not a build thread. More like documentation.
Build specifics :
MBS Matrix II Pro trucks.
E-toxx matrix 2 baseplates.
Dual APS 6384 130 kv motors.
Flipsky dual 6.6 /w custom cnc heatsink/enclosure.
My own cnc motormounts.
Trampa superstar hubs.
Trampa 200mm/8" soft threads tyres for offroad.
Innova 200mm/8" slick cut tyres for asphalt.
Trampa 125mm gummies for nice asphalt.
Metr.at Pro module
16/66 gearing for 200mm wheels - 450 htd5
16/40 for 125mm gummies - 375 htd5
The reason for this gearing is then I don’t have to worry about belt tension when changing wheels and belts of chosen length.
200mm calculated pulley distance is 115.58 mm.
125mm calculated pulley distance is 115.92 mm
This small difference doesn’t really matter when swapping wheels.
Difference in speed is less than 1 km/h.
Comments and suggestions are always welcome
First a shot of the complete build on its maiden ride.
First package arrived from trampa. I bought a full mtb. Heelstraps and all.
I didn’t like the way the springs on the trampa trucks felt. And the top spring adjusters would interfere with my vesc housing on top of the rear. So I sold the trucks and opted for the full urethane bushing on the matrix II trucks. Adjustable from the underside too. Felt much better.
But then I found the thread about weak injection molded baseplates. And I don’t go slow. So the obvious solution was of course some jenso love!
Reverse enginerding the mbs channel truck geometry is an iterative process. 3d printing is nice for this.
I designed some motor mounts and made them at work. 7075.
Glass Blasted the parts for increased friction between mating surfaces for belt tension adjustment
Test fitting motors
My attempt at some form of water proofing the sensors in the motors
And loctite 648 the steel pulleys to the motors shafts at the correct spacing.
Moar wheels! (and sneak peak of my 40t gummies pulley)
Machining the 40t pulleys. 7075.
Looks great, fits perfectly!
I will update this topic as I have some more spare time.