New Chassis Sales without bodies?

[Stephen Rainsbury]

The hard part about producing a chassis is the gears and wheels. As mentioned above wheels for outside frame chassis have been addressed my Neil Moss, but gears are another matter.

In theory I could 3D print a chassis but I would want a lot more practice with 3d CAD before starting that.  This would include mounting for a motor, and a pulley system for a drive belt, probably from Nigel Lawton, for the main drive

However that still means a lay shaft and gears for driving the axles from somewhere, not to mention the steam "gubbings", or I might as well use a Kato.

[Graeme Dunbar]

The hard part about producing a chassis is the gears and wheels. As mentioned above wheels for outside frame chassis have been addressed my Neil Moss, but gears are another matter.

In theory I could 3D print a chassis but I would want a lot more practice with 3d CAD before starting that.  This would include mounting for a motor, and a pulley system for a drive belt, probably from Nigel Lawton, for the main drive

However that still means a lay shaft and gears for driving the axles from somewhere, not to mention the steam "gubbings", or I might as well use a Kato.

I'm sure you are not the only person to have that thought.  ;D

... and there are plenty of people with the relevant CAD skills and the observation that the market is not awash with such chassis suggests it is not the limiting factor in their production and availability.

[Stephen Rainsbury]

... and there are plenty of people with the relevant CAD skills and the observation that the market is not awash with such chassis suggests it is not the limiting factor in their production and availability.

I have been thinking the same thing. In practice my resin prints by themselves are probably not right for a complete chassis. Some warp after a while and if you make them too thing they can break. 

My initial thoughts are to use resin printed end blocks, approx 1x1x1 cm that would hold metal etched side pieces in place.

Each block would have two holes drilled right through from side to side in which you would glue a 2mm threaded insert (spacer) so the side pieces would bolt into place and not need bolts.  It would have a recess to support lay shaft.

You would then have a third print that went between the ends, holding the wheels, lay shaft, and motor in place.

That would b easy enough to make up in batches, and would not require much skill to assemble. My major concern is the stabilty of the resin prints.