An Exploration of the NKP 3-Link Trucks

[@ScottImbrie]

Forget the fact that the mechanism is brilliant. This is fucking next level experimentation, everything down to the play in the damned sharpe plotter. Nice work dude!

[@fess9867]

for those who don't watch whole videos: compare 0:31 to 15:38 visualize precision. - 4:56 path of constrained by first link only - 5:48 path constrained by second link only. - 6:56 intersection of two constrained paths.

[@ducktaperules]

Amazing video. Scientific approach 10/10. Dry Sharpe sound 1/10 🤣

[@joeytedder]

So what you're saying is to buy Stooge Raceboard trucks or buy a spirograph?

[@erich1394]

What are your thoughts on a progressive version of these trucks? Or a version with a soft "dead spot" toward the center? What geometry would need to change to make that possible to begin with? Or is this perfect linearity an advantage across the board (pardon my pun)?

[@LongboardTechnology]

These are the questions I ask myself. I think a platform like this would be ideal to experiment with that, but I'm not sure how to accomplish it. We do have progressive turning trucks we've played around with, and I think that behavior has potential. I see the advantage being able get a tighter turning radius on stable trucks. Also, Skis and snowboards do operate with a really big progression on their turning. So there's already an analogue out there people are familiar with.

[@erich1394]

@@LongboardTechnology I'm an LDP longboarder so stability plus snappy turning is important for pumping. That and losing as little energy as possible through the trucks. I feel like a progressive version of this truck might achieve that? Not sure. Very cool video - thanks for doing the legwork!

[@eBoard3R]

🤙🏼🤙🏼

[@hauntrepreneurs]

How does the different link positions on the pivit end of the truck change action angle? Placing the links closer together or further apart? Where is that video? (:

[@LongboardTechnology]

I guess I'll have to make it.

[@hauntrepreneurs]

@@LongboardTechnology YES PLEASE! I too am searching for the illusive "S" curved action travel of a truck. For more steering near the zero lean and less steering the deeper the lean so at speed you can reduce ankle break and stay in the curve. BTW love what you guys are doing! Keep it up.

[@LongboardTechnology]

We've got trucks that can do the opposite. Low angle at 0, then high angle at the edges. Thinking about it like, for when you're going fast and mostly staying on top you have a stable geometry, but when you're at low speed and can lean more you can still get a small radius to carve. Haven't really thought much about the other way around.

[@hauntrepreneurs]

@@LongboardTechnology REALLY? What truck has an S curve pattern? Ill mount it upside down if I have to!

[@LongboardTechnology]

@@hauntrepreneurs Its a slightly secret project. Or at least not overtly public. Here's the playlist: kzbin.info/aero/PL5yZQb3nCI4SDhV0MICruo6jCy6p4HsQk

[@jpjay1584]

will you change the angle of those 2 connectors? it has different holes.

[@Zachsnotboard]

yeah that's normally how you would change the angle of these trucks

[@LongboardTechnology]

I didn't here because I was trying things I wasn't sure would have an effect, and those holes are normally how you change the angle.

[@dustinbird2090]

If you do that demo again, it'd be sweet if you switched out the colors of ink used in between the changes for easier visual communication.

[@LongboardTechnology]

Getting the lid on and off the sharpie was already a hassle, so I'll have to figure something out for next time I guess so I can do that.

[@akskatinchillridin1805]

Mmk now make some for sale. Or can i make them and pay royalties?

[@LongboardTechnology]

stoogeraceboards.com/collections/3-link-trucks Here's where you can buy them if they're not sold out. You don't have to pay royalties for stuff you make for yourself, only for stuff you sell. You don't need anybody's permission. If you do make it yourself your results may vary.

[@akskatinchillridin1805]

@@LongboardTechnology thx my dude

[@Domieboy]

ok now ride