Carbon Fibre Inline e-roller Blades

Esk8 Electronics New Tech & Development
, ,
1

I have always wanted to build my own electric roller skates/blades, and I was hoping others would also be interested in the idea. It could end up with building only 10 of them—it doesn’t necessarily have to go further than that. Let’s see if more people get interested towards the end of the project. But it shouldn’t be more than 10 for starters, and you don’t have to fully commit from the start.

I want it to be based on Escend Blades (which never have any stock), but built out of carbon fibre instead of aluminium, or at least wrapped with carbon fibre, resulting in carbon fibre-reinforced walls. It will look really professional—I think even better than the Escend—so it won’t have a DIY look to it.

You can add your own boots to it or use Doop boots—up to you.

I want to follow a very modular approach with the building. I already have a RO brushless BLDC motor in mind. So we’ll discuss the battery pack and the design, then people can commit so that we order 10 modules of a single unit. We’ll take it one unit at a time in the process. The same goes for the charger, ESC—you get the picture.

I’m located in Austria, so I guess we should make it an EU project. It might get expensive if I also include the US, and we could have problems shipping batteries. I’m not a law expert, so I don’t want to burn my hands here.

I have already decided to go with Aisler (made in Germany; they really produce high-quality PCBs for reasonable prices) for producing the 4-layer PCBs, and I will hand-solder all the components ordered from Mouser. We might even go for 6-layer PCBs, but 4 might be more than enough considering costs.

We will go with Molicel cells to build up our battery, which will be soldered directly onto a PCB using U-tags. So literally everything will be replaceable and fixable in this project.

For the transceivers, I will use Bluetooth LE unicast (ISO packets) to talk to the two receivers to ensure proper sync and low latency. The skates will also transmit info in the ACK packet back to the remote, up to 240 bytes of payload.

The idea is now out there. Let’s hear from the community.

4 Likes
2

Sorry, i cant roller blade :sweat_smile: but this maybe be relevant and helpful?
https://youtu.be/orFvdlw1orY?feature=shared

3

@Vanarian is the go to guy for e-blades!

But he’s been mia for awhile (and heavily missed). I’d check his threads for some inspiration

6

The wheels will be thick, it should be beginner’ish friendly. But I do understand, it’s not for everybody.

https://youtu.be/orFvdlw1orY?feature=shared

It looks very interesting, thank you for sharing. However I believe I can overcome some of the shortcomings. Using hub motors will allow for a shorter frame, thus more stable, and it will look much better. And the second problem are synchronized remotes. With LE Bluetooth, I can open two CIS streams, that goes to each of the e-blades, so we can sync the RPM of the 2 motors with a relative low latency.

7

His profile certainly looks interesting. It seems that he is missing for more than a year now. Maybe this thread will revive his interest back to this forum.

1 Like
8

Great to see more people interested in electric inline skates! I am a big fan. Have you seen Atmos Gear? https://www.atmosgear.com I own a pair and I think their design is next step compared to Escend Blades. The hub motors are slim but still provide enough torque.

What I wish to see improved in the next version is the frame itself. It can be made thinner and lighter.

9

In Paris and Vienna e-sk8ts definitely makes the most sense to me. So I think we are going to see a lot more in the future.

Have you seen Atmos Gear? https://www.atmosgear.com

It does look sick. I’m not a fan of strapping on batteries, but I agree that batteries are the main factor that limits maneuverability, so there method does make sense, but personally I don’t like it.

It is demonstrated that one can sandwich carbon fiber around PLA, which can then be used to build moldness carbon fiber frames. If the frames are in fact stable then we can do as many custom frames as we like. But it remains to be seen. Someone build an entire car out of PLA + carbon fiber https://www.youtube.com/watch?v=NvIFUINUlMU.

If it turns out not to be possible, then I would rather stick to a single design. Because molds for carbon fiber infusion is a pain and is expensive, and that is why I don’t want to have multiple molds.

But if the POC yield some fruit, then I see no reason why we can’t have 10 different designs. Also the frame less motor is 70x15 mm and can also be forged into a custom hub wheel.

What I wish to see improved in the next version is the frame itself. It can be made thinner and lighter.

The only way to make it lighter and thinner is either titanium or carbon fiber. And titanium is unaffordable, just ask OceanGate