Hub Motor / Direct Drive Axle Stress Safety Discussion

@Deathjunior how’d that happen?

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He bought enertion hubs that’s how

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I’m not an expert but it looks like a problem with the axle…

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Mr @professor_shartsis was waiting for this post.

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If you ask Jason he’d probably blame the rider for being too fat.

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At least he didn’t call them Direct drives

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The rider weighs 175 and it’s a close friend of mine. This is his board a very early batch preorder of the raptor 2. I had been chatting with torqueboards back and forth saying this one must have been one of the good ones. Then we were probably 3-4 miles into a long cruise doing 8mph as far as the gps data says on level ground. The wheel just kind fell off taking the charge port cover on his new shredlights with it.

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But I mean look at the construction. This design relies upon a few mm of overlap from the truck to the motor and a single what looks to be 10mm bolt holding it together. I wouldn’t trust that to hold anyone for say sidewalk stripes or a drop off a sidewalk. If I had known this was how it was assembled I wouldn’t have recommended my friend to buy it. I’m not trying to hate on enertion here but that’s a poor design.

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That makes one of us. Lol

Sorry dude thats shitty.

I’m honestly surprised we haven’t seen more of this.

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It’s all better than new now. The DD kit has support for the full length of the hanger and the axles bolts are far more sturdy. Should hold up quite well.

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This can work.
The problem is it requires substantial pretension on the bolt, which looks like it didn’t have.

Glad your friend is ok.

Ohh I know Dani, however it would have taken a pretty tough piece of hardware and torque yield bolts to hold that in maximum tension. Then you have to factor in the thermal expansion which isn’t much but it will add up when you have a constantly rotating mass thats constantly vibrating from road debris your going to get more than just vertical force in shear. The aluminum will eventually deform and loose tension and now your riding just on that bolt. It’s a poor design.

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Another one bites the dust…

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Is it possible to read that without hearing the beat?

Possibly saying it twice

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no wayy, that looks like the original v1 elofty drives?
@janpom

hey man notice any difference in free roll with the torq DD system vs the enertion system

I’ve ridden both and the dd is an easier coast. Maybe partially due to the bigger wheels