Well when i slapped the monster granny tyres on the landboard i used my standard atb trispoke rims. The rims where 2" wide but the tyre designed for 3" hubs.

Any way i've used the grannies for a year and found that i get axle tramp (the wheels bounce up and down off the ground) when sliding at speed on certain types of sand hardness. I've attributed this to the hubs being too skinny and the tyre flexing.

I hunted around but could find the wider hubs with the same bearing size. bigger bearing would meain i'd probably have to make new axles which is an expensive task.

So.... i decided to make some spacers and to widen out the hubs. I've widend the hub 15mm. Which results in the tyrs sitting 10mm wider and a greater contact patch.

i've yet to do any high speed tests to see if the axle tramp is gone. hopefully tomorrow.

Thanks to the mighty Gannet for skimming duplex my axles so i could fit the wider hub on.

Cool Dude, Looks Awesome, let as know how it goes

went out today for the first real session in a month. (cast is still on) hooked up with the mighty NorthenAl and headed to fitroy beach. got to the beach and found brisk 20-30 knots on cross on. and a monster surf swollowing all but 30-40 meters or beach width.... 10 of that was drift wood, 10 was small sticks and crap and the remaining 20 the brown foam slime of doom.

Not the ideal. infact pretty darn extreme. anyway there was wind and some beach so we rigged up for a we session.

Al fired up the pink n-gen on short lines i pulled the trusty 6m access out of the bag.

Al belted off downwind flying his wipper of a kite like a squirell on P. i cruise along one handed (sometimes no handed) flying.

Anyway. back to the wheels. on the downwinder with the kite high the wheels felt no different.

BUT got to the end of the beach and started heading back up wind. Wowa. no sliding just grip. up i churned holding gobs of power with no sliding at all.... wow. The wheels felt super solid and predicatable. Thin hub grannies were good. The hubinator spacer grannies are freaken magic!

whoot.

Al shreds me on the downwind tack but on the up wind i have the extra pace. Al was abit underpowered with his short line n-gen but none the less any day that a landboard can upwind better than a buggy is a special day. I'm sure it would have been different with the thin hubs.

So i'm stoked. It was just a gamble that the hub spacers would make any difference.... but they did. Still haven't gone fast enough to see if the axle tramp is gone but the improvements thus far justify the action.

YEAH, go plummet.
what's next 3" hubs, what's the stand hub look like for the grannies
you know, you are just wasting time,
and you should just bolt 4 Kenda beach racers on
and man up those ankles, well you could wrap the ankles with some carbon first

haha carbon ankle protectors. then i'd just move the week point up my legs. i'd ahve to make full carbon robocop body armour.

the 3" hubs are either industrial like gusters. bearings way bigger than what i use. or the official granny hubs are alum with steel. heavy as hell.

yeah looking at Al's big foots i wonder if i can build a 2-wheeled big footed landboard like the buggy bike that i can stand on.!!!

that might be next years project.

" 2-wheeled big footed landboard "
Isn't that just a dirt surfer on steroids

your'll have to mount paint ball gun to the front wheel as well

oops

that was going to be a secret

"Isn't that just a dirt surfer on steroids" - Totally! Mind you I can see that thing rolling along unpiloted for quite a distance...

The spacers look like they work a treat! Itching to start on my Quadrilution style cruiser now. BTW I see DOTMAR stocks different durometer urethane round stock which may be an easy way to build future elastomer trucks.

What bearings do you use BTW?

well sort of a dirt surfer except it would have to be bi-directional like a mountainboard. i hate toeside. so any design that requires 50% toe side is out,....

canee remember the bearing size 600something.

DOTMAR? i'm interested in more urethane i need to give 85duro a go.

Oooh... steering geometry setup on that will be a doozie!

I've used up my 60A casting stock from TopMark and Gannet wants some harder rubbers for his leading link. I think I'd like some harder ones on the Moosetruck too. The Quadrilution only needs a compression block and I have some urethane flatstock I can use for that.

Next time I'm in the area I'll drop by Dotmar and see if they have 85A round stock. Probably standard 1/4" increment round stock sizes so I'll see if they have something like a 1.75 or 2" round. Depending on the cost this may work out well for leading links too.

Round bar is too much of a hassle for me. Pouring is the way to get the exact shape that i need.

Oh well, while I didn't mind machining the round stock to shape, it works out too expensive anyway(~$200/250mm billet) Even with the cost and effort of a mold it is still way cheaper to cast and more options than you can shake your mixing stick at.

At least I won't need ~85A till I've fabricated some stainless P style trucks anyway. I'll just get a small quantity of 70A for Gannet to test and I'm sure it will do very well on the Moosetruck.