First Build: / diy sensored duel 63mm inline directdrive / 90 mm wheels / vesc / porn /

I have uploaded my 3d drawing of the wheel on 3d concentral.

http://www.3dcontentcentral.com/parts/download-Part.aspx?id=703494&catalogid=171

2 Likes

Hey @zeinstra

What duro did you order and can you say if they are really that duro

1 Like

i ordered 78a. i have no idea if they really are 78a. maybe i can compare with kegels if you want?

Late reply, everyone was happy about the softness so i suppose they are legit!

Hows the build going @zeinstra

I want to try and do a directdrive myself

I have been a little bit busy for some time. but its time for a big update i guess. I am very happy with the abs enclosure:)

Testing with one motor

motor is getting warm quite fast when accelerating from stand still and low speed driving once i drive 20 km/h it is fine. the top speed is arround 30 km/h but acceleration isn’t very impressive at 25 A .

after an evening soldering with Danny finely both controllers are working :smiley: the way back from the train station to my home was also the first dual motor test of the board because the buses where not riding anymore at 2 am.

at new asphalt roads it just unbelievable how quit it is. you only hear the wheels rolling. with dual motors it has enough torque to pull me up the tiny hills we have in Holland. at a nice flat road the top speed is about 38 km/h

7 Likes

How’s the progress and any problems acured

I haven’t done much to this project past few months because of the rainy weather in the Netherlands. When i was testing I didn’t have a BMS and i forget to unconnect the battery wires. When i came home again the voltage was near zero :frowning: so the first battery pack is destroyed. I have ordered a chinese 12s bms and a new set of battery’s. I only have to connect them. Because the deck had more flex then i expected I made a 3D printed battery holder that can bend without bending the lipo cells.

5 Likes

yooo, this is sick. Share the results please!

does the motor casing tilt? I was planning something like this but the tilting issue stop me from doing that

Do you mean the stator is rotating on the hanger? I haven’t ride it a lot but til no it hasn’t been an problem.

I think he’s talking about the can wobbling out of alignment on the inside (away from the wheel), because there is no bearing on that side. Seems like you’ve solved that with a very solid press-fit into the back of the motor & the extended axle to absorb ground forces without motor can wobble, but it’s still a question in many people’s minds about durability.

1 Like

no i mean the casing of the magnets, since the bearings are on the wheels but at two side of the stator, which might cause the ring casing to move

maybe if the glue comes loose or something. but when you have a regular motor that would also give problems. the outer ring of the motor is pressed with about 2 tons on a press preheated at 80 degree with one of the strongest loctite’s. I don’t think that its going to move unless it gets hit by a rock or something. Only way to get to know if its going to come lose is testing :slight_smile:

1 Like

Great build, man. Good inspiration for the Kydex enclosure I need to make soon for mine.

I have pulled everything apart to make it ready for the season:) Because i didn’t trust the smal hex bolt for the fixation of the stator, I mounted it with loctite for a almost permanent fit. the steel outer ring was a little bit oval witch result in variation in air gap between the stator and rotor. I didn’t like it so i made a reinforcement ring to force it to the round shape it has to be. Now i only have to redesign the cap on the back side of the motor, this cap has to be in two pieces now when the stator is permanently mounted. They turn super smooth:)

4 Likes
6 Likes

MAN, you’re AWESOME, but I think you could put the Cnc files to Dowload, and explain a bit more about the axle, did you put the truck on a Lathe?

1 Like

Thanks! Do you mean the cad drawings? Because the g codes are programmed for a home made cnc mill so i don’t think you can use them. yes if you check my post 25 sept 2016 you can see how i did.

Yeah, the Cad files and maybe the Stl file for that 3d printed part… Have you thought about doing a Youtube Tutorial? It would be easier