D95 banana van

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Guy Rixon
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Joined: Sun Mar 27, 2011 6:40 pm

Re: D95 banana van

Postby Guy Rixon » Fri Jan 08, 2021 5:18 pm

While thinking about how to fix the body, I drew and printed the brake assemblies.

IMG_8067.JPG

I was not expecting these to print well, planning to have them done at Shapeways, but took a test-print at home anyway to check clearances. In fact, the home print has worked very well. It seems the Mars Pro is better at spindly things than chunky bits.

The pull-rod in the centre of each assembly seems to have come out thinner than expected relative to the parts with rectangular section. This seems to be a feature of the printer (or the slicing software), that the round parts shrink in on themselves. In a production print, I will thicken that part to compensate.

The strategy, as with the SECR coaches I'm building, is to cut a gap in the cross-member such that the assemblies fit over the axles with the printed pull-rod passing beneath its axle. The rods to the centre crank will be added from wire when the brake assemblies are fixed.

CornCrake
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Joined: Sat Dec 05, 2015 2:03 pm

Re: D95 banana van

Postby CornCrake » Fri Jan 08, 2021 5:34 pm

Which Bill Bedford W Irons are required for this model?
Steve

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Guy Rixon
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Joined: Sun Mar 27, 2011 6:40 pm

Re: D95 banana van

Postby Guy Rixon » Fri Jan 08, 2021 6:33 pm

CornCrake wrote:Which Bill Bedford W Irons are required for this model?
Steve

I'm using the "1907 RCH" kind, which are my standard fitting for pre-group wagons with 3'1.5" wheels.

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Guy Rixon
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Joined: Sun Mar 27, 2011 6:40 pm

Re: D95 banana van

Postby Guy Rixon » Sun Jan 17, 2021 9:07 pm

IMG_8109.JPG

The brakes needed several tweaks in their supports to get them close enough to the middle bearers, but they are now sorted.


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