Dual Motor vs Single Motor Setup For Eskateboard

[BazookaBaboon]

So according to my research, I'd want to invest in a model airplane motor that is 63 mm for my longboard (I'm a big boy, 210 lbs), looking to go 25 mph max. Dual motor setups seem to just in general function better, could I just get two motors at around the 35 mm size, rather than buying two gigantic ones? If yes, great, if no, why? Let me just mention that this is entirely hobby-based, I have no formal engineering education or experience, so the more info the better. I just don't even know how to begin to ask the question to the interwebs.

 

[chuttney1]

If you were to get motors with 35mm diameter, not many companies make a motor below 200kv because of the torque need to start from dead stop. The other thing is bearings are smaller compared to the 63mm motor so there are limitations. I just wanna say you might be able to get away with a 35mm motor in the short term, but for durability reasons it would be wise to not skimp on the motor if the mechanical limitations result in more strain to the system.

 

[sl33py]

BB - you add a lot of complexity and cost w/ dual motor... I'd start with trying to determine what you need vs want. And how are you going to ride it - terrain, and distance?

I have 2 boards now, one 63mm single motor, one dual 5065 (both 200kv).

Most importantly i think is gearing/torque for hills. If you live somewhere very hilly the larger motor is a must, and possibly two.

I'm about 265lbs in my skivvies, so probably 270-275 geared up. The single 200kv 6354 (at 6s) definitely moves me just fine and does ok on hills. I really should test it at 8-12s and see how it does (12s being the max the VESC can do). I have a pretty big hill in my neighborhood i use as a "benchmark" to see how well it pulls my big butt up a hill.

Where are you located and how do you plan on riding the board?

Welcome, HTH and GL!

 

[Vanarian]

Welcome to the board!

I support what chuttney and Sl33py told you, 35mm will get you short lived motors. Dual drive will ease the stress on all your setup but is more complex and can be more prone to disfunction, you need to carefully plug/solder and check everything.

Maybe you want to start with one motor, and when you've tried it, you can add one more motor and one more ESC to get more power.

Before advising you peculiar components, can you tell us more about where you want to use your board? What is your ideal budget for the baord?

 

[torqueboards]

Dual motors all the way. The bigger the motor - you get a bit more torque and it's a bit more durable to heat and abuse.

At 210 lbs a 14-18lb board wouldn't be that heavy IMO.

35mm are too small and there isn't any custom motors in that size available. Your motor shaft would be pretty thin to at about 5mm if not less.