Jump to content
murrayec

Meadb Class 800 Gauge O

Rate this topic

Recommended Posts

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;-

1908113332_SH800-01IMAG4606.jpg.fb502c59db2b7d275a8106a31efbfb4e.jpg

732370913_SH800-04IMAG4610.jpg.9946621fc5f5a8dab0eb00faa960fe44.jpg

59263931_SH800-02IMAG4607.jpg.7407e906911904a7fec13436b0f0827e.jpg

1161958052_SH800-03IMAG4609.jpg.972d530c9e5217bf87b3a3cb5450902b.jpg

35340062_SH800-05IMAG4608.jpg.f81fa9e2c1bed9206d907fcdd15f7330.jpg

2095715935_SH800-06IMAG4621.jpg.6bfc5881b4486874101aa4eb3b3de515.jpg

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!

1702814438_SH800-08IMAG4628.jpg.4ee39ec86fb763390db1cf7aaff272d2.jpg

680462899_SH800-07IMAG4627.jpg.2fbd6db0930c0f6ac934e6b7343a2f11.jpg

1815042294_SH800-09IMAG4626.jpg.44f406e57da0080d729961994f9af6ea.jpg

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.

214116424_SH800-10IMAG5253.jpg.65232d9dee862c39e681325ceab46f19.jpg

472288037_SH800-11IMAG5256.jpg.f8a68f2ca5a09c3d05ebefff9cb3983e.jpg

1641122299_SH800-12IMAG5257.jpg.5496a81b1eeabd4eeafbf130d0a9c0cb.jpg

547164125_SH800-13IMAG5254.jpg.86965d3749b6a3dbde91035fda4b444d.jpg

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.

865925301_SH800-14IMAG5258.jpg.8f22c3ca1ae561f9d1f8ab0347426456.jpg

19243544_SH800-15IMAG5259.jpg.5e35ff2dc35d6976564fb0549d14a5b9.jpg

Done.

129151915_SH800-16IMAG5261.jpg.56842d425042a2d910c186023147ff97.jpg

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

2001873430_SH800-19IMAG5267.jpg.69b03e07f33b67fe2df1909aadf01aaa.jpg

53421239_SH800-20IMAG5268.jpg.c72396e64af99474813d514119895768.jpg

Worked a treat!

410444372_SH800-21IMAG5269.jpg.0ea59a1c82560983bffb9c061b90ceb8.jpg

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.

55634866_SH800-17IMAG5264.jpg.340a028aab8a189c97109408670f1ffc.jpg

887592184_SH800-22IMAG5271.jpg.32bfb43e0f57167add091f48c1f664f9.jpg

570467055_SH800-23IMAG5272.jpg.db6637ce36cd107111d15392304a9171.jpg

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

1811755219_SH800-24IMAG5273.jpg.137d4bb088f3d0f73ebafa22efd6e9ee.jpg

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

289869693_SH800-25IMAG5270.jpg.40e46a892a34237b02848dd682a4bdc1.jpg

Eoin

 

 

 

 

 

Edited by murrayec
  • Like 7
  • WOW! 4

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...

Important Information

Terms of Use