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B16 Subtype Differences

Posted: Wed May 23, 2012 6:26 pm
by majormagna
I know what the basic differences are between the different subtypes of B16; but what were the outward physical differences between the B16/2 and /3? Aside from numbers, that is.

Re: B16 Subtype Differences

Posted: Wed May 23, 2012 7:54 pm
by Saint Johnstoun
The B16/2 was RHD and the B16/3 was LHD. (You can tell from the side that the ejector pipe passes along the boiler). Otherwise you have to look closely at the cylinders to see the 2:1 gear behind the valve chests. The covers over the expansion links on part 2 were deeper.

Re: B16 Subtype Differences

Posted: Wed May 23, 2012 9:41 pm
by majormagna
Ah, thank you. I wasn't sure if the LHD/RHD thing was straight accross the board for each subtype.

I know the B16/2 needed to have the leading bogie further forward, and thus had longer frames. I'm assuming the /3 used these same frame dimentions and bogie placement?

Re: B16 Subtype Differences

Posted: Wed May 23, 2012 10:09 pm
by Saint Johnstoun
In most respects parts 2 & 3 were otherwise identical - new cab, front bogie moved forward. Thompson simply replaced the 2 to 1 gear with a set of inside valve gear.