does anyone know where i can source a 10" rim,wheel etc...
The relative ease would depend on what country you're currently in.
I know I've seen that lots of baby strollers use smaller pneumatic "bicycle-style" (plastic mag-style) wheels, but I don't know what the weight loading of these is.
I would warn you about buying similar-style wheels from surplus or general hardware sources. The wheels that are sold for things like garden utility carts are usually a much-lower-quality than you will find in a decent child stroller or a bicycle. The bearings in particular are very cheap--sleeve bearings, or loose ball-bearings in very loose races that totally lack dust covers. The spokes are often welded at the rim, too.
I think 12,5" is the standard. Try looking for old childrens bikes. I found some with plastic rims/spokes, much like the BMX rims/spokes wheels you can find. Bearrings could easely be changed on them if better quality was needed (not built for long trips or high speed. Wanted to use them on a trailer.
hey thanks for the responses but needed for a compact trailer design so really need 10".
really dont want to have to fabricate these myself!!!!
The problem is that there's not many pneumatic wheels that small that are used at high speeds, or over long distances--so they don't have good bearings.
You could use flat-track go-kart wheels. These will have good bearings and can be had as small as 6" tall but come rather wide (around 5" is the narrowest I think) and they will cost $$$ - like, a pair of wheels and tires may cost $200...