Thanks
From the guy that make the most amazing enclosures it means a lot, thanks. I always try to sort everything before starting a build to save time and money
Thanks, all done in Solidworks, most of the time I don’t even bother to sketch things by hand since i’m pretty bad at it, but in CAD you can do 2D sketches just to see how things fit together
Here’s the final, not a great picture, but the best I have
For the drive train I went with something totally custom, first because nothing available was ideal, and second where is the fun in buying something ready to use?
I always liked to use a bearing inside the pulley, everything stays in place and you lower the load on the wheel core. a 17mm bearing was used and the truck machined to achieve a perfect fit
For the mount it was a challenge since even on the 195mm Paris hanger there was almost no space for dual motors with 15mm belts
The space between the motors is just enough for the motors don’t touch
Also I made covers for the pulley and a inside cover that route the wire to the back
But them we arrive at the problem, 17mm was too much material removed from the axle or I got lucky and got a bad hanger. After the 500 km or so I noticed that the motors were close to each by a good amount and them realized that the entire hanger had bent
I’m glad I caught this early or I thing one of the wheels may have snapped and I kissed the road Boosted V2 style
I already made a way to leave more material using a bigger bearing and a spacer, but I will not implement since I’m parting out this build to make a new one
Why are you parting it out?
Don’t get me wrong, it’s a joy to ride it, but not where I live
The short deck means I ride with the foots right on top of the trucks, so no dampening from the wood, also the small wheels doesn’t help in rougher roads. There some streets that I can’t see if going anything faster than 5 km/h, the eyes start to vibrate and everything gets blurry
But when the roads is smooth is amazing, exactly by being short and light is super responsive
I will keep the basic structure of it, only removing the trucks and eletronics for the new board, this may become the test plataform for the hub motors I’m developing, but there’s a long way to go
The electronics are pretty straight forward
I think that’s it for this build
Just some comment’s, I have managed to get 44km of range with the top speed limited to 25 km/h. I use it limited to 33 km/h, faster than that is not that stable, you can ride, I got it to 44 km/h once, but you have to be focused
And for last two videos that I did using Metr.at and the overlay from @rpasichnyk
Very nice build thread!
This is exactly why i decided to part out my 33’ build. These fucking roads are so bad i can’t feel my legs after 20 seconds.
Yeah, the main problem is not feel safe with traffic and can’t keep up with it
Hey nice build one question though
those kegel pronges here:
How did you make them? Whats the diameter?
I think the diameter on the pulley I design before was 5.3mm, but I was wondering if you did something different
I buy them in my local fasteners store, they go by ground pins, I don’t know the exactly nomenclature in english, they are made to aligne two parts of equipment with precision before fastening
EDIT: found, they should be called guide pin I think
This ones are 6mm diameter by 25mm length, the fit is really tight, you need a press or something similar to put them on, and a big hammer to take them off
First time I was afraid to crack the core, but it worked
Why not take a 6mm drill and make the holes in the core fit perfectly?
The pins also hold the pulley in place, there’s nothing else securing it, so it need to be a inteferent fit
I don’t if this would work without the support bearing on the pulley since the belt would generate a moment that would try to pull the pins out of the core
Isn’t the bearing holding it in place?
No, the bearing is free to move on the hanger, it doesn’t touch the motor mount, this way you don’t over constrains it and allow for thermal expansion without putting a axial load on it
Cool little board. You said it gets a little sketchy at high speeds. (I didn’t know you could get those speeds outta 5055 motors) Do you have other boards that go that fast or faster? I ask because at higher speeds (at least with downhill, I’m very new to esk8) changing your stance is really important.
I think this was my fast board, but yeah, charging the stance I could go up to 45 km/h, but not a way that id like to commute
About the 5055 is just about finding a balance, you could even do that with a single, but the hill climb would suck. Currently the limitation is the battery that max out at 30 A, so anything above 17 km/h the VESC lower the motor current to keep the battery current under that
Thank you for explaining that. The board has duels but it’s only running a 6S. I have a hummie deck ordered. It’s getting 2 6374 190kv at 12s.
Update:
Installed the TB 218 trucks while my Hummie deck doesn’t arrive so I can ride dual motors again
What a difference, I can go 40 km/h using the same bushings that I used on the Paris 195mm, on it 33 was about the limit of stability
The mounts turned out a little bit lower than the CAD drawing, don’t really know why, but the gummies it won’t be a problem
Enough talking
Rocks always got inside the motors, but since I mounted them to the back it become a nightmare, you clean and sometimes immediately another one get inside and start grinder
Well, not anymore
Cleaning the motors before sealing them, the one that was making noise was a mess inside, I have no idea what got inside and completely disintegrated, looks like a black goo that coated the entire stator but not the magnets
