I'd meant to update on Thursday, ran out of time and then ended up making more progress Friday evening, so here goes a bumper update!
The focus of this latest work has been the brake rigging underneath. This orientated around two focal points: The clasp brakes and the crossbar.
The clasp brakes on these vans operated on the outer ends of each wheel, giving four points of contact for the whole van. A clasp yoke then connected the shoes at each end of the van to the off-centre crossbar by pullrods, with the whole apparatus being operated by an operating arm which fed into a bar on the inside of the van which was operated by handwheels on each veranda (still with me?).
The exact arrangement was concluded by comparing side and end on drawings, and I sketched it out (top down view) for my own benefit:
(I dont expect that to make sense to anyone, but bear with me...)
The arms for the brake shoes as supplied are a tad generic, and don't factor the arrangement on these vans whereby the shoe is set 2/3 of the way down, with an extension below to where the clasp yokes attach. My solution for this was to take a whitemetal casting for some dual brake shoes, cut the shoe (and arm) off and fit them upside down, as seen below:
I then focused on making up the arrangement for the crossbar on each van:
Before adding the clasp yokes and fashioning some pullrods out of brass strip (intended, on their etch, to make guide loops for conventional wagon brakes - they'll look ok once painted!):
The eagle-eyed may notice the lack of attachment on the compensated end:
Rinse and repeat and we have two vans!
Getting the angles correct and trying to line up both ends before the glue set was... fun(!) but I am pleased with the outcome:
I have since prepared and painted the handbrake wheels, as well as drilled the holes in each end of the vans to fit when the paint is dry:
I'm awaiting some new 4-leaf springs and drawhooks, and then I shall finish detailing the W-irons and bufferbeams before painting the underside. I also need to fit sandpipes too!
The brake gear was definitely what daunted me the most, so now I feel like I'm on the home stretch, even with a list of tasks still to do! I've definitely found the momentum again though, which is nice. I've already got my next wagon build lined up as well... But we'll save that for another time!
- James