Possibly not really adding anything new, but.
The MK1 BG was built on the 57 foot underframe to give it a wider route availability than it would have had had it been on the 63 foot chassis.
The Hornby (Triang) BG is, as stated, too long as it's on the 63 foot underframe.
The first correct length modern R-T-R model of the BG was Replica's [I think it appeared after Mainline's (Palitoy's) decease)], which I suspect has a very close relationship with the current Bachmann model.
Prior to the Replica Model the only correct length R-T-R BG was the Hornby Dublo model. This was the correct length for the opposite reason to the over-length current Hornby model, i.e. all the Hornby Dublo Mark 1s were to the short length! I bought mine in the 70's from Hattons who advertised various H/D coaches for quite a few years after their [H/D's] demise.
A note on Livery, according to Parkin's book on the Mk1's there were apparently some MK1 BGs painted plain Crimson instead of Crimson and Cream [not to be confused with the later all Maroon livery].
Jerry
The MK1 BG was built on the 57 foot underframe to give it a wider route availability than it would have had had it been on the 63 foot chassis.
The Hornby (Triang) BG is, as stated, too long as it's on the 63 foot underframe.
The first correct length modern R-T-R model of the BG was Replica's [I think it appeared after Mainline's (Palitoy's) decease)], which I suspect has a very close relationship with the current Bachmann model.
Prior to the Replica Model the only correct length R-T-R BG was the Hornby Dublo model. This was the correct length for the opposite reason to the over-length current Hornby model, i.e. all the Hornby Dublo Mark 1s were to the short length! I bought mine in the 70's from Hattons who advertised various H/D coaches for quite a few years after their [H/D's] demise.
A note on Livery, according to Parkin's book on the Mk1's there were apparently some MK1 BGs painted plain Crimson instead of Crimson and Cream [not to be confused with the later all Maroon livery].
Jerry