Neo Raptor sleeves (SERIOUS)

Esk8 Dev
#22

This is from their description of their wheel tech : quite interesting to what they discovered

Reinventing the Wheel

in Technology

Wheels are probably the most important component of every longboard especially on ones tuned for
speed.

The most important parameters are diameter , contact patch , durometer , lip shape and on electric in-
wheel longboards also urethane depth . Too little and the ride will be bumpy and totally unpleasant. So
we decided to go for 85 mm diameter, 70 mm contact patch 80 Shore A durometer and 17,5 mm urethane
depth. The wheels are built on an aluminium core that allows easy mounting on the electric in-wheel
motor. Our wheels are optimized for high speed, they are grippy and predictable and of course they
will not let you down even when sliding sharp corners.

But it was not so at the beginning – back then we used aluminium core with four 2.5 mm deep grooves to
create a mechanical lock between the core and urethane. It worked, but not for speeds of over 90 km/h.
At those speeds the wheels are rotating so fast that centrifugal force could tear the urethane off the core (ghosting)
then the urethane spreads to the point that it could separate from the core. This is of course extremely
dangerous and because our board is capable of even higher speeds we found a solution to make
the wheels safe for the speeds that were never achieved on any existing e-board.

We totally redesigned the core so the urethane bonds to the core from inside and outside so there was no chance
of separation from the core any more. All our prototype wheels are made that way now and since total
core redesign we haven’t had any problems with the wheels whatsoever! But the redesigned core is quite
expensive so it wasn’t convenient for mass production. Here’s where our partner from the rollercoaster
business comes in. They made special wheels for us on totally basic aluminium cores even without grooves. And
because they did the job perfectly our production wheels are totally at any speed.

2 Likes
#23

Yes this is good. But the problem is this motor doesn’t have any method to lock pU except for screw in front. So is no so effeCtive.

2 Likes
#24

What if you mold TPU core instead of aluminum? Cheaper but still reinforcement for PU sleeve

#25

Your neoWheel has 4 screws! That’s very good - i was more focused on the grooveless design they are talking about - ie their aluminum core and urethane combo has no grooves in their bonding, or whether the aluminum sleeve itself has no grooves with the motor (i’m not sure)

#26

Yes but it has grooves in the motor design to lock the PU. The screw is only for looks to hold front plate and does not lock the PU.

4 Likes
#27

It not enough to hold and can still warp.

2 Likes
#28

You can see how ours locks to motor. It is very tight tolerance by purpose so it cannot moving.

4 Likes
#30

The raptor have no groove on motor.

2 Likes
#31

What’s your suspicion on cause of the PU tearing apart? :face_with_monocle:

#32

The formula of the PU combined with vibration because pU is not rigid enough around motor. Too much force on one side.

We already use same formula like we make for neoHUB. But now need to fix PU to be more secure and rigid for motor.

5 Likes
#33

That’s fantastic news - more testing ahead! always love improvements.

#34

adding a shell to the motor that has groves for the PU to hold on to is not possible ?

#35

No. It need all new motor design. :face_vomiting: is better to replace with neoHUB :slight_smile:

4 Likes
#36

Hi Jeff,

First of all thanks for your efforts here.

I personally am fine with any sleeve similar to the original design, as i don’t want ride at highspeeds and I just want to use the motors untill their natural end of life.

I really like the motors, but they are outdated in many ways.

For me the raptor drivetrain is only working as a second or third board like an oldtimer you drive only on sundays.

1 Like
#37

circa 2015 testing for nextboard. Kind of on topic as it shows one end of the scale but a good watch none the less.

Nice work @jeffwuneo

3 Likes
#38

Kinda funny when you see @FastBoard doing more than that on public roads.

1 Like
#39

This is exactly what enertion did after the only comfortable PU they made didn’t work for the same reasons. The PU was too soft. Then they stiffened them and they rode like complete shit. You might come to find out that unless you can secure them on the other side too, you will have the same issues. Or just be left with high duro, horrible riding wheels like they did.

2 Likes
#40

I was more impressed with how he rode out the loss of both front urethane like a boss

2 Likes
#41

Same. Had he lost just one the outcome would have been different though.

1 Like
#42

Very very true lol