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murrayec

Meadb Class 800 Gauge O

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Another Class 800, this time it's 'Meadb' is in the workshop for completion- valve gear, break gear, wheel weights, some cab detail, painting & lining.

As it came;-

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So I set about stripping down the chassis and came across a number of issues;- only two of the axle bearings were soldered into the chassis, the others had been super-glued in but all have come free to rotate with the axles- see photo of bogie above, their all loose to. The plunger type electrical pick-up system was very poor, some of the plungers were frozen in their housings and did not make contact all of the time. The chassis required a few more frame spacers- it was a bit bendy!

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So with a plan of action the frame spacers were made up from .5mm brass sheet in the 'L' shape for stiffness, a pcb copper clad pick-up board was cnc'd out- as I'm going with wiper pick-ups off this board- no stinking plungers! Holes drilled, M2 nuts soldered to the new spacers and the plate fixed with M2 bolts- this holds the frame spacers in when soldering them in the chassis.

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Spacers in, time to solder the axle bearings in. The coupling rods were cleaned up, to be used with the axle jigs to centre the bearings when soldering them in. I do this on a glass sheet with two rulers on edge to support the chassis by the axle jigs.

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Done.

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The cylinders were cleaned up after removing the old crosshead guide bars, the valve front end was drilled to take the valve rod housing that sticks out the front- done with 1mm dia brass wire locctite'd in. The valve back-end guides were cnc'd from .5mm brass sheet and folded up for soldering on. I came up with a lolly pop stick trick to hold these parts in position for soldering- a cross shape with a spigot that seats into the valve end and the parts clipped on?1195679686_SH800-18IMAG5265.jpg.59c04cd7924c545554ff4b624397cf39.jpg

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Worked a treat!

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The remainder of the valve gear was cleaned up and I noticed we're missing some parts- the Valve Rods and the Anchor Links! The link will be cnc cut from NS sheet with other parts later, but the valve rod requires a bit of machining- 2mm square bar was rounded up on the lathe with a file leaving a 3mm long square at the end, then cross drilled for a rivet, then .5mm slotted to create a clevis, after a bit of filing.

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I made these a bit fat as the holes in the valve housing are large.

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Wheels have been cleaned up and the wheel weights in .5mm brass being epoxied on.

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Eoin

 

 

 

 

 

Edited by murrayec
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Thanks all for the great comments above.

I intend to paint the chassis, wheels and body at the same time, so next up was to decide on the works to the body, after a good inspection I decided that some soldering and soldering clean-up was required and decided to add a little detail here and there so out to the sand blaster.

All cleaned up.

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The cab will be getting a backhead but there is a gaping hole in here, the footplate is a bit wonky to, and a lot of residue solder everywhere- so another blast in this area is required, and I came up with an idea to fill the hole and fix the footplate- more on that later!

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After doing that I started on detailing the front end by drilling out the footplate and the smokebox door to take brass wire handrails, footplate lamps and some rivet detailing.

Smokebox door rails and footplate steps handrails installed with .7mm brass wire.

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Smokebox door rivets going on with the help of the Nutter.

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And as one can see in the above photo the Smokebox door hinge is non existent! so came up with an idea for that using .5mm brass wire, two Gauge 00 handrail knobs and tiny brass tube strap end details to line up with the door straps. The NS frame was drilled for the knobs, these will have to be glued on as the door is resin cast and wont take soldering heat.

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Vac pipe parts for soldering up, done with brass wire, brass tubes and guitar strings.

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A bit of soldering and gluing to do......

Eoin

 

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