Roll on the 20th June

[sm0ky2]

@ Exx

i like the skateboard wheel idea better than the sliding door rollers.
because skateboard wheels have better bearings.

although picturing this in my mind, i have the idea that it would require some skills and probably specific machinery, in order to make a perfect cut like that into the wheel.

there's gotta be some bearings, with flanges, or grooves in the way we want them. Even if pulleys ended up being the way to go, it needs to be something people can just go out and get, or make with little effort.

thats why i keep returning to building it with wood.
wood is relatively cheap, or can be found for free as scrap.
you can cut / shape it any way you need to.

but to have 1,000 people trying to cut grooves into skateboard wheels,..
that seems like a daunting task, that i myself wouldnt want to deal with

[exxcomm0n]

@ Exx
i like the skateboard wheel idea better than the sliding door rollers.
because skateboard wheels have better bearings.
although picturing this in my mind, i have the idea that it would require some skills and probably specific machinery, in order to make a perfect cut like that into the wheel.
there's gotta be some bearings, with flanges, or grooves in the way we want them. Even if pulleys ended up being the way to go, it needs to be something people can just go out and get, or make with little effort.
thats why i keep returning to building it with wood.
wood is relatively cheap, or can be found for free as scrap.
you can cut / shape it any way you need to.
but to have 1,000 people trying to cut grooves into skateboard wheels,..
that seems like a daunting task, that i myself wouldnt want to deal with

I think we should be turning cartwheels if even 10 people are thinking about milling skateboard wheels.

K then...I said gimme some time to percolate and it's been minimal so all I have at the moment is to use a stack of roller blade wheels.

The come in sizes ranging from 59mm to 100mm and usually are sold w/ a bearing per wheel.
So, buy a smaller one with the bearing, 2 larger ones w/o a bearing, glue the 2 larger ones to either side of the smaller one w/ the bearing and "Viola!" you have a cupped bearing surface that will keep the rod with a decent ball bearing for about $5-7 per.

Or..........

You say you like working with wood, so you get hardwood dowel, mill out the center track w/ a dremel or drill w/ a reamer bit.
Mount it on a bearing 1st and you use that to help you mill a symmetrical groove but it take s longer.

Gimme a little more time to dwell on the ghetto engineering and I'll figure some other things out.

[exxcomm0n]

Duplicate post.

But with the idea above w/ roller blade wheels, you can forget the middle wheel and just glue the large wheels to the outer bearing race to save more $$$$.

[sm0ky2]

im thinking tiny spools..

something like what you find inside a magnetic cassette tape,
or a heavy duty sewing machine thread spool..
find bearings that fit nicely..
or make a plug to fit the bearing into that fits the spool.

just trying to expand a bit on the sliding door roller thing.
mechanically, it is exactly what we want,
but frictionally, it is going in the opposite direction

the EB as it stands, three, four, five, and possibly more bearings for very large rods - is the most frictionally efficient method i have experimented with so far.
And i think that is one of the most important things to this whole device, is that the rods are able to slide easily and freely.
This is "step two", directly after step one, which is " that the WHEEL spins easily and freely / balanced"

without that, you're dead in the water before you put a single magnet on.

[ramset]

SmOkey
Quote:
im thinking tiny spools..

something like what you find inside a magnetic cassette tape,
or a heavy duty sewing machine thread spool..
find bearings that fit nicely..
or make a plug to fit the bearing into that fits the spool
=====================
Nice !!
How big do you feel you'd like to have the wheel?

Would a Clanzner size build be feasible ,Table Top?[for Clanzner kit purposes}?

Thanks
Chet