Maybe I found an other option. Couple two spoked railway wheels front to front together. There are also pole road loco's with wheels that have a more flat inner part instead of the round form.
Only thing is where to find these wheels for a reasonable price. With this method I need many of them. Already 8 for the tractor itself, and I want also a little log car behind it. Time for some more googling .
Jose, sorry for the delay. It is ment to be a static model at first. Maybe I gonna motorize it later with RC to control it. Why can´t I use resin copies for a motorized version. Is it not strong enough?
Resin will work, if it is bonded to a metal rim/flange
One of the British manufactures makes loco drivers that way, and because of the less time involved in making a metal master, and lower cost to make the wheels, they are able to offer quite a variety of sizes and number of spokes. Counterweights are taken care of with an arc shaped piece of metal or styrene, epoxied on by the modeler.
____________________ Fix it again, Mr Gates--it still works!"
Herb, the rim is the problem. I have tried a few things today to make a rim but it didn't work well. I have asked someone what the price is to mill the wheels for me. It is just a side project so costs must be low otherwise I don't continue with it.