Dispute between Psychotiller.com and SurfRodz?

Actually my board is 100% metric, so I don’t need a skate tool. My truck/deck bolts are M5.

It’s not an exaggeration I only need the tools I showed above for ALL the hardware on my board.

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My board will be 100% metric, how it should be :slight_smile:

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Facepalm… Are quick66 motor mounts center to center 66mm…

Your kingpin is 3/8" in diameter and has 3/8"-24 threads on it and the locknut fastened to it has 9/16" between the flats. They put a dome shaped head on the kingpin so you can never invert the kingpin and put the head in the baseplate and the locknut on a (cup) washer above the top bushing. As long as you like that and ONLY that configuration, you can take your bendy little M5 Allen wrench and tighten up those short bushings instead of using a proper wrench or socket/ratchet. If you want taller bushings you’re out of luck, and even if you did they don’t make different length kingpins to support them. If you grind the hex feature on the or strip it, you can’t just go out and get a new 10 cent locknut, you have to order a new kingpin from Connecticut.

If you love the SZ world and plan on never quitting it, don’t worry, be happy. But just hope that SZ never quits the non-Esk8 longboard market, as so many others have.

Currently the Psychotiller Six Shooter rims have pulleys bolted onto them. There are no “press-fit” pulleys for Six Shooters. They work great and as a result I’ve never had a misaligned belt or felt as if the belt tension on the pulley skewed the wheels or was causing a problem.

On urethane wheels with “spoke holes” in the core, you can bolt on pulleys and expect the same result as with the Six Shooters. Once I fasten pulleys to a wheel, I keep them there until I wear out the wheel, just as I put bearings in a wheel and keep them there. Bolting pulleys on a urethane wheel isn’t pretty, but it works well.

Having a press-fit pulley in a urethane wheel isn’t a bad idea, but there are a few challenges that have to be dealt with before you can be happy, joyous and free. First of all, where are all of these perfectly designed pulleys and what bearings do they use and what is the standard for bearing positioning? In order to answer that question you have to know what wheel/core you are using, what bearings or speed ring is on the axle, and where the pulley positions the bearing before you can make a hanger that accepts the pulley bearing perfectly. I’ve included a rendering of a pulley and a bearing that fits on a hex hanger perfectly. These dimensions are critical. The cylindrical section of the hanger has to hold the bore of the bearing using a decent slip-fit. The ledge where that cylinder terminates acts as a stop for the pulley bearing and must be positioned perfectly or it will bind the bearing (too close to the end of the hanger) or it will allow the pulley and/or bearing to slide side to side.

The bearing I’m showing has a 19mm bore and a 30mm OD. When the “ledge” is about 22mm from the end of the hanger, the bearing is actually underneath the teeth of the pulley. Some companies (who will remain nameless) have a pulley bearing that’s more in line with the pulley’s flange and doesn’t really do all that much.

You can get great concentricity when you cut the axle holes, cylinder, and hanger face all in the same clamping in a lathe using a hex collet. I think that you’ll probably see this as a feature once a number of great plastic-injection-molded pulleys that fit genuine Flywheel cores become available. I want to make pulleys that can be bolted on (without the bearing) OR press-fit in (with the bearing). The hangers would work perfectly with either …

PulleyBearing

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Shit, that looks good but yeah as you say - not simple. I was just keen for a longer axle so I don’t have to do this to them: https://youtu.be/t6V4nBUFeYk :joy:

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I don’t care either way. I just like metric hardware.

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Have I got some imperial software for you

Ho,… just discover this !..

I make an order 2 weeks ago and it was still Liquid truck ^^
I was wonder why I didn’t get any shipping info etc. since.

Now, reading this, do we know if the dispute is over for good? and if by chance shipping will start soon? :blush: :stuck_out_tongue:
Thanks for your help :v: & Good WE e-riders !

Dave will be shipping everything he has now and everything that people are ordering now will ship soon.

Again, the claims in the SurfRodZ patent protects them from anyone making removable and replaceable hangers. As long as any multi-part hanger system implements permanent securement, there is no infringement and there is no issue.

What I find interesting is how in the hell they got the patent in the first place. To obtain a patent the invention must be novel, non-obvious, and useful. “Novel” means new, where there is no “prior art” which means that the invention can’t be anything that has been written about in a publication, anything that is already being sold in the open market, or anything already patented.

I designed, published, and sold removable/replaceable hangers in 2001. I even shared the idea with Radikal Trucks who sold them as well. Although these are RKPs and no one is going to grind (wear) through a 1/2" steel hanger, you can swap out longer or shorter hangers using the cap screws. RKPs and TKPs have been done like this for decades.

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Thanks a lot for all these highlight Chris :pray: !

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I thought their patent had something to do with the oval shaped kingpin hole

In one patent they claim an oval shaped “spherical” bearing that is sandwiched between the bushings with a complementary kingpin hole.

In the other patent they claim the removable/replaceable hangers.

https://patents.google.com/patent/US8424882 Oval Bushing Seat "Sphere"

https://patents.google.com/patent/US8500138 Removable/Replaceable Hangers

SZ1

SZ2

I’m surprised there’s no patent for their adjustable base plates.

While we have your attention — what’s up with a drop through jet killshot?! :pray:

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First thing I thought when I saw that deck. Cutout the bottom for a recessed battery and low profile enclosure.

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Great minds think like me

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Does the axle go through the full width of the hexl trucks or are they threaded in? Want to confirm as I’d most likely remove some hanger for an integrated pulley bearing

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I’ll re-post this rendering which shows a cross section of an axle stud and not a through axle. I didn’t model any fastening detail but that wouldn’t effect a pulley bearing anyway. The model of the bearing has a 19mm bore and a 30mm OD and the “ledge” at the end of the hanger cylinder is about 22mm from the end.

PulleyBearing

The type of people to afford and buy these trucks are the type of people to use pulleys with integrated bearings. I don’t see any real downside to always making esk8 truck axles longer. I hope this gets addressed in the future for these heXL trucks.

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What are you talking about?!!! Think about it? If my Sixshooters are made to fit all longboard trucks what does that mean?