And these will be available when?
I'll get them off to Ainsty in the next couple of days, then it's up to Andy.
Just a thought on the Pumper handle cart.... where do the 2 fellows stand while working the handles? seems the space is a wee bit small?
or a shorter handle?
In the reference pics I found, it looks like the guys that pump the handle end up on the very edges of the cart to get more leverage. It would be easy enough to shorten the handle if the general concencus thinks so? Otherwise the cart would have to be huge to incorporate handle and models! Personally I like it the way it is.

Are these sized to fit commercially-available tracks, or are the tracks Anisty-made as well?
The bits of track I've got are from Ainsty Castings. I don't have any other track to measure it to bud! I don't know if it helps, but the inside width of the track is 17mm.