I’ve had this idea kicking around about using a single dual shaft motor to drive both wheels on a truck. Don’t know if they make such a thing in smaller motors but some larger motors come with an output shaft on each end. This would allow both wheels to have the same output torque and avoid slipping, also a single ESC for each truck. The issue might be too much drag when turning due to lack of speed differentiation between inside and outside wheels on pavement. Maybe only useful off road? Thoughts?
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Yes people do this on rare occasions, but I wouldn’t recommend doing it with wide trucks
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Folks have done this and it works fine according to them. I second the “Don’t use wide trucks”
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What width would be considered “wide”? And does this pertain to pavement only or off road as well?
https://www.instagram.com/p/Cvpl-BcprEz/?igshid=MzRlODBiNWFlZA==
Surprisingly less problematic than expected.
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I would say 184mm hangers if you can and 220mm tops? I wouldn’t off road with it
Why not off road with it? My idea was this provides equal torque to both wheels eliminating the problem of the wheel with the least traction spinning. I’d think off road should have less issues with tire scrubbing on turns than pavement, same as with a solid axle ATV.
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From a traction point it’s fine but I wouldn’t off road with a single motor due to load, if you did solid axle but 2 drive axles it’s fine
To be fair there is traction control available for VESCs
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I didn’t realize that. Do you know the details on how it works?
if it works? when it works?
I think you should be asking this. Also there are some pretty huge safety issues if I recall, but don’t remember exactly what they are, and whether they only apply to four motor drive or not.
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Somewhere in motor settings there’s a traction control option, you specify the maximum ERPM difference between motors
I’ve run it on my 2WD boards without issue so far
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Any idea who sells dual shaft motors? This one looks like an EZRun but I don’t see any on their page.
Its still a single shaft it just comes out both ends of the can.
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Yeah but they call them dual shaft, like this
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I am looking at a single motor as being highly applicable to the recreational board market. Lots of the Boosted clones use relatively narrow trucks. I can see a single motor being used. Just simpler.
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that hobbywing looks like it’s been modified with a longer shaft that has enough meat for a pinion on both sides , just need to get a motor shaft longer by however many millimeters stick out of the original where pinion would go. it would have to be a motor with open end cap not a sealed end cap id guess.
Could be a sealed inrunner as with some larger motors.
Been meaning to do it for a while. Power on small comuter builds is fine The main reasion is brakes are limited by contact patch of one wheel makes single drive are not a practical option in my opinion.
You will notice you will set up bushings slightly differently and change the truck angles as the board will move less in the rear. Rember go carts have locked rear axle and super short wheel base and extra wide axles.
APS will make a custom axle for £15 I was thinking this inrunner.
https://alienpowersystem.com/shop/brushless-motors/56mm/aps-56115-inrunner-brushless-motor-100kv-5000w/?attribute_type=STANDARD
On some SR TKP 159. I meant to look in to motor mounts and installing a bearing in the motor mount 3d printer broke so need to fix that first
Not sure what you mean, a dual shaft motor drives 2 wheels so you would also have 2 wheels for braking.
Yes exactly hence the main reason to do it.
Just watch how you support the motor on both sides as there’s a lot of leverage and belt will skip if only supported on one side.