Repro Carrier Wheels?

[RichardT10829]

my thoughts were to make a resin patern by using an actual link, i got pointed in the direction of a casting compound which you pour in two stages, it then sets into hard rubber, you then remove the link and pour in the resin compound and voila.

to answer your question AJ, yes it is manganese steel. i could get a link CAD'd but it would take a millenium to do it, a laser profiler would be better, just set the link up and the machine plots it into the system by passing lasers all over the link......would cost a bomb to do it though.

[ajmac]

Trouble is you can't just make a pattern from an original, Steel shrinks (unlike Cast iron) so your end casting would be a scaled down version of what you started with! The pattern maker scales up the original when he makes the wooden / resin pattern to compensate for the shrinkage. Certain items can be mouled from an original, then the moulder can 'scrape' the sand to compensate for the srinkage. A few years ago Dad did a Model T wing support in steel using an original pushed into the sand, all it needed was a couple of cm adding to its length to allow for the change in size. Obviously the entire thing was a little smaller but it was only critical on the length.