Spotted these on my kite site and thought that there may be some overlap of interest.
www.briskites.com.au/index.php?l=product_detail&p=865
They are the skinny brothers to my kite buggy "bigfoots"

They look VERY interesting chook, could you find out the bearing type as the numbers listed are not something I recognize, I'd be looking for a 20mm centred bearing, find out the weight while your at it please, then we can research some tyres.
you might find that the tyres might be just a bit to high sitting and would tend to roll off, but it is worth investigating further

LY,
That is a possibility but if they are anything like the 8" on the Razor?? Damn! I'd hate to get my thumb caught in the bead as it Banged against against the Rim. The Bearings are the same as the other wheels 42mm Od x 20mm ID x 12mm Wide That is 1 21/32" X 25/32" and just shy of .5" I was talking to a mechanic a few weeks back and he looked around the Razor and noted the front wheel bearing as being the same as those in Alternators, Hey! Don't Shoot the Messenger. Metrics is always in a shave different from Imperial.
What I want to know is why have Briskites got those and not the smaller brothers??? I am thinking of buying more in from the Europe and I can get them a couple of bucks cheaper.
Ron

The 4" are out of stock Chook.
Ron

That is Great to know Chook.. Have you ever looked at those wheel manufacturers??? The sell them for about $1 each so where does the other 198 come in?? Shipping?? My Ass.
Ron

do you know the weight of them jas? I looked at what tyres they may fit today and couldnt match them to a bicycle size, so they would have to have a M/C tyre.
then you have the problem of trying to accelerate a flywheel, and the rolling off problem.
sorry for the questions, cos they do look good.
on hard ground alloy wheels have a habit of breaking , but these look like they could be a better bit of gear