Help - Rear wheels assembly

Hi,

I’m working on a skateboard project and I’ve stumbled on an issue with rear wheels assembly. Most of my knowledge I get on how and what is based common sense and on forums and YouTube tutorials, but unfortunately I didn’t find a solution.

The kit I’m using is a TorqueBoards with 160MM all terrain tire wheels.
Having the rear components come together, the result looks pretty nice

But the wheels are spinning in a very restricted manner (belt off). I tighten the screws just slightly more (about 1/8 turn), after I start filling resistance. So in my perspective, the screws are loose and I’m afraid it could result in losing a wheel during a ride.

By trying to figure it out I’ve disassembled it to see what’s going on inside. I’ve noticed that the spacer(#2) that was in between the hub and the wheel bearing has noticeable scratches on it.

I’ve replaced it with a narrower spacer (#1) which seemed to fit in the outer hub placement a bit deeper.

The issue still persisted. Just as I tighten the wheel screw, it stops spinning freely. The friction occurs at the place where the spacer should be. When looking closely, I saw scratches marks on the hub, the wheel bearing and the spacer itself lost its black color.

As far as I see it, the friction occur between a spinning part - the hub and the barrel of the bearing which is static - or become static due to the pressure applied by the screw.

So perhaps I should not tighten it at all ? or am I missing some part here ?


thanks in advance!

Did you check each bearing separately, before it all got assembled, to make sure they are all in good working order?

Also, do you have a photo of the backside of the pulley? Maybe it is coming in contact with the hanger? Does the pulley have an integrated bearing?

My best guess at this point is that the pulley & the hub of the wheel are not perfectly mated together, or not perfectly concentric parts, causing the central axis of the pulley and wheel to slightly offset from the central axis when mated.

Try rebuilding the wheel and pulley a few times, each time rotate the pulley into a different location, you have 5 different locations it can be installed in. Hopefully one of those locations has a better alignment.

hey @onloop, thanks for your comment

i’m using the bearing I’ve got with the wheels kit for the pulley and Reds for the wheels. The bearings are new and I didn’t notice a defect with a bare eye.

the shaft is clear - no marks of friction.

The backside of the pulley with kit`s bearing.

While running this in my head, I’ve recalled that Evolve has a kind of trucks which have 2 different diameters of the shaft mounting part.

I imagine that one is for the wheels and the other is for a pulley. the wheel bearings barrel would be tightened against the wider diameter part of the shaft - isolating it from the pulley. My trucks are same diameter all along the mount part. maybe these trucks are not intended to be used with ATW or the assembly require additional customized parts ?
it feels to me more than a miss alignment of components. I’ve pressed them well to insure it has no inner movements/clicks. The wheels just refuse to spin when i tighten the screws. I’m confused at this point. it’s my first experience with this type of motor/pulley assembly so I feel I’m missing something.

@torqueboards perhaps you could help me understand what I’m doing wrong ?

thanks

The truck axle you have is perfectly fine for the pulley & wheel assembly.

The fact that evolve has stepped the axle up is not related to your assembly, however, I do believe evolves design is better as it is likely to be much stronger due to the larger diameter axle. They really have beefed those trucks up over the years.

My advice is that you build up your pulley & wheel assembly layer by layer. Completely disassemble the wheel so you have two halves. Then put it all back together directly onto the truck axle layer by layer.

washer pulley and bearing wheel rim half with bearing bearing spacer tire & tube wheel rim half with bearing washer nut

Make sure it spins nice

Then wheel bolts.

Also, As you add each new layer give it a spin to ensure no friction points.

The last step is putting the wheel hub bolts in. this should ensure everything is properly aligned & hopefully freely spins.