E-Freeboard Freebord Open source Electric Caster

[Lunasi]

That your indiegogo? Looks sweet!

[Fosterqc]

Not sure why I would be liking my own instagram posts. I will have to scrape together the couple hundred dollars for the kit when it is launched and snag the early bird deals.

See more detailed answer on my plans here

@rosco

What’s your endgame on this Quinn?

I’m very interested in their slip ring solution and how the caster bearing block looks.

[cfelzien]

Im over here. Fucking a man. Not really fucking a man. You know what I’m saying.

[Fosterqc]

interested in more details about how your fucking, Amen

[cfelzien]

So be it then. Where the hell is @billgordon when I need him. On his knees of course.

[cfelzien]

Do you have a freeboard?

[Fosterqc]

prob hanging with this dood

@cfelzien

Do you have a freeboard?

yeah man read the damn thread LOL

supposed to have 3!

[cfelzien]

I’m just making small talk. This is our first real date.

[cfelzien]

Fucking dopeness man.

[Fosterqc]

@Fosterqc

I saw Tio post this on the SB FB group

sheet I forgot about this! I need to import the bindings model he sent me also.

[Fosterqc]

@cfelzien

@Fosterqc

@Fosterqc

I have been thinking about how I could add in the self balancing feature to this board, after giving it some thought I think it could actually be implemented in a useful way.

If you think about a Funwheel, it’s job is to make sure you don’t have a nosedive. When you are riding a freeboard you have a similar concern, the front side coming down onto the road. Also known as “catching an edge”.

So I’m wondering if you could have self balancing running in the background and sense the tilt angle so when you are about to catch an edge it would give a slight power increase to shift your weight back into the slide.

I basically think it could work because it would always know the direction of travel so it would not be confused by the spinning. It might not be a solid idea for some reason.

@NuRxG interested if you think an adapter version of the self balancing feature could do this?

Would this work better if the IMU /VESC was inside of the rotating wheel module therefore simplifying it to work with standard self balance code?

here is one of the self balancing ideas

@Fosterqc

@Fosterqc

small motor controls the suspension so it can be lifted at will.

I think this idea, combined with an electronic brake on the rotation of the E-Caster as well as self balancing on the center caster would be a usable combo. What I imagine is you would be riding it like a freeboard but then you could get going straight on the center wheels then engage the rotation brake, at the same time the suspension lifts you and self balancing engages. if you are sliding when you start the lift system it will ride like an EUC and if going straight it would ride like a OW. Dumb idea to go too fast when doing this obviously.

and here is the one I was referencing in the other thread, this second one is what I find more interesting and practical.
I think adding it into the more standard summerboard could just be dangerous but also might work fine.

[cfelzien]

I read it. I like the spring trucks. That would be legit

[cfelzien]

Man there’s a lot going on with center to end to center. Don’t see why it wouldn’t work. I personally don’t have the skill set for said coding. I’m the nuts and bolts guy. Haha

[Fosterqc]

haha I can’t write a single line of code, the idea would work with standard VESC self balancing I believe, but it would need to work sensorless through a slip ring so thinking about it… it might not actually be possible unless I make the battery part of the rotating module like the original idea (removes slip ring).

I could try getting one of the capsule slip rings with 3 wires at 30A and 6 at 2A possibly.

[cfelzien]

Like a center pivot sprinkler works. Gotcha… farm kid here.

[cfelzien]

48V 250 rpm mini signal capsule slip rings

Like this

[Fosterqc]

no, they generally make those cheap capsule slip rings for EITHER power or data (especially at that standard 22mm) but not both because that is more complicated having different conductor sizes inside.

I said I wanted 3 wires at ~30A and 5/6 for sensor data >2A

You can find some industrial ones like that but they are super pricey, and I could make my own but dealing with the small brushes and their rings would be fucking horrible (still might do it tho)

This is why it is much simpler to remove the slip ring and put the ESC, battery, all inside the module if I want to use a sensored motor. Same weight of the board after all but the module becomes cumbersome.

[cfelzien]

Ahhh, gotcha. I think. Either way I think it can be done. You have my permission. Your welcome.

[Fosterqc]

Axel trying the Freebord 5X for the first time - Review

[Lunasi]

What KV hub motors are you using for this? I was just looking over the specs and was surprised seeing only 26mph on a 10s battery, considering the summerboards are running 7s and getting about the same speed running belts. I’m currently upgrading my old beta leiftech with an 8s battery to see what that takes me to. Are these hubs compatible running any higher voltage than 10s? @Fosterqc