Noob question thread! 2020_Summer

[Komamtb]

I have no idea, but will now know what to read about

[Ruubie200]

will two 6374 motors fit on a bn220 from boardnamics?

[frame]

@Acido

5 spoke 3.75 hubs from 3dservisas?

i think that’s the same as the trampa megastar hub bolt pattern?

[Halbj613]

best way to do 4wd with hoyt puck and spintend vescs
split ppm or canbus

also how does the puck have modes does it just limit the max output or does it actually limit the speed?

[frame]

@Halbj613

best way to do 4wd

canbus should be the easiest way

@Halbj613

limit the max output

it limits the pulsewidth values

[Halbj613]

cheers thought so on both things

so effectively limiting pulse width just means reducing power but in theory same speed

[BenjaminF]

@Halbj613

limiting pulse width just means reducing power but in theory same speed

No, it would reduce the maximum possible duty cycle. When you run the App Setup Wizard in the VESC Tool, you are essentially mapping the PWM signal from the remote to the duty cycle range of your ESC. The Puck limits the PWM signal range that it outputs, and therefore your duty cycle range is limited by an equivalent amount. This means you will have less power, but also less top speed.

It’s a simple, (if somewhat inelegant) solution to speed modes on a PWM remote, and can have some unintended risks/consequences:

First, if you run the App Setup Wizard with the remote in a lower speed mode, and then you ever try to run your board with it in max speed mode, then you will be sending a higher PWM value to the VESC than it expects to see, which can cause bad things. Always run App Setup with the remote in speed mode 3 (maximum).

Second, if you are riding in speed mode 1, the limited duty cycle may not be enough to give you proper start-up torque. @Leon had this exact problem:

@Leon

Its more on initial current and not just speed. The speed should be limited by the mode you chose by the pulse of course, but what I meant is something like this:

So just be aware of those things, and you should be fine. Personally, I prefer to keep my puck in speed mode 3 all the time and just limit my duty cycle with my thumb

[Halbj613]

yea i guess mainly just want other ones for my brothers or friends who i dont trust iwth the remote

thanks man really useful to learn this

[Athrx]

Yep, with room to spare using 15mm wide belts. I think maximum is dual 6384

[Evwan]

I’m running out of options right now, so I’m looking at having my battery redone in form factor to fit into a boosted split style enclosure as my deck is flexible.

[Evwan]

Ooo this is really helpful I’ll keep this in mind, thanks!

[Evwan]

My mboards enclosure makes a lot of loud noises when I hit a bump so j feel this for sure.

[xsynatic]

Is it possible to upgrade a 1.6 focbox/neobox to make it canbus invincible?

[b264]

@BenjaminF

No, it would reduce the maximum possible duty cycle. When you run the App Setup Wizard in the VESC Tool, you are essentially mapping the PWM signal from the remote to the duty cycle range of your ESC. The Puck limits the PWM signal range that it outputs, and therefore your duty cycle range is limited by an equivalent amount. This means you will have less power, but also less top speed.

I don’t think that limits duty cycle. You can reach full duty cycle on a limited PWM signal, for example, upside down on the bench.

[b264]

@xsynatic

Is it possible to upgrade a 1.6 focbox/neobox to make it canbus invincible?

Yes, solder the ESC+ and ESC- wires from two ESCs together. If they’re soldered together, they can never be disconnected while CANBUS is connected

[xsynatic]

but canbus can be disconnected while they’re on. Doesn’t this also kill 'em?

[b264]

Nope, should be fine.

[Evwan]

Do y’all think this is enough ground clearance?

[Evwan]

For the motor mount

[Evwan]