Robert, thank you for the information! The plans only show one type of bogie -the power bogie. So, I assume the model is supposed to run on four of these. Which does make sense from a predictability of handling point of view.
I would love to know where Chris Barron gets his 11.5mm channel from! As before the only supplier is in Poland -a glazing suplliers(?) Thus it is going to 12mm steel channel. This does improve construction in my view. It is cheaper, I can pick it off the shelves at B&Q and it is easier to work with. Prior experiments with attempting to bend 1.5mm Aluminium through 90 degrees has resulted in two pieces... But despite this -the rebent ally channel is all over the drawings(?) To be honest I will probably print the spacer pieces rather than try and bend them
When I wrote about how LBSC did his plans in the G3 Wiki I wrote that it took some time to get inside the mind of LBSC but once you had got there everything was "obvious"! The same applies here. The dimensions are all millimetre metric, the drilled hole sizes are all in Wire Numbers and the nuts and bolts are all BA... The hole sizes are really all metric viz: #54 or 1.4mm etc. All of the nuts bolts holes etc are direct metric sizes. For some reason - he never says so...
The brass bevel gear he quotes for the power bogie is a Meccano part number and the motor comes from MFA/Como Drills -all set for a 6mm shaft MOD1 gear(?)
I have come to the conclusion that he does this curious mix to present his plans as "Model" plans -rather than "Engineering" plans.
Regards
Ralph
