Nick Dunhill's 7mm W (A6) or Whitby Tank Workbench

Tim Watson

Western Thunderer
....con rods fitted up.....

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Should the oil pots on the slide bars have a hole in the top to let them vent?

Tim
 

Nick Dunhill

Western Thunderer
.....this is how I made Laurie Griffin eccentric rods. The cleaned up eccentric rod has to be attached to the forked end. The measurements show the centres of the rods have to be 2 mm apart when mounted on the expansion link and eccentric sheaves. The forked ends are offset and the eccentric rod has to go under the shorter side, but only by 0.4 mm, ie not the full thickness of the rod. So;
1 Straighten the cast forked end.

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2 Cut and place in your simple jig. The jig sets the centres at 28.4 mm.
3 Mark out the eccentric rod and cut.

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4 File a step half width.

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5 Replace in jig and solder up.

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6 Use low melt solder as a filler, quickly dabbing on.

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7 File up and polish.

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Done! Repeat 8 times!!.....
 

Nick Dunhill

Western Thunderer
Be careful though because if you look at my jig you'll see the eccentric strap is raised above the jig to position the strap and forked end centres into the correct alignment.
 

Steph Dale

Western Thunderer
Fair comment! I think My approach would work if I turned the rod over, but I'd have to think about it...!

Steph
 

Nick Dunhill

Western Thunderer
It took a lot of head scratching to work out the geometry, and the rods are of variable thickness so you have to remeasure for each one. Time for some new moulds I think.
 

Steph Dale

Western Thunderer
It's worth taking the time to scratch your head (or any other part of your anatomy that helps with thought processes) on jobs like this. The few times I've seen people get completely knotted around inside motion is when they've just gone for it - as you know.

It's good to have your builds out there to show people a consistent way of doing things. :thumbs:

Steph
 

Nick Dunhill

Western Thunderer
.....castings for the air brake and heating hoses have arrived and it allowed me to finish the pipework under the loco. Its all a bit painstaking, but worth the effort (bend , check, bend, check etc)

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The pipe to the rear brake hose goes from a T-piece from the air pipe under the main air reservoir, and passes diagonally up to the bufferbeam.

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The air brake hoses are detachable for painting, you can see the above one is a bit skewiff. Finishing off Stephenson link motion next......
 

Nick Dunhill

Western Thunderer
.....The crank castings in the LGM inside motion set have gone to be recycled into steam heat pipes and these fab things appeared. They were kindly machined for me by a sympathiser.

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I contacted LG about the cranks and he admitted to a bad set of castings but assured me that the current batch are fine. As previously mentioned the rest of the castings in the set were also fine, so were fettled. The lifting links have to be scratchbuilt, and the balance weights supplied are also the wrong pattern, so replacements have to be made.

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The valve rods were made and fitted up. They're made from the usual selection of thin walled tube rods and screws.

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And to bring you all up to date a couple of test fits were performed.

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So tomorrow its time to install it all in the chassis.......
 

Overseer

Western Thunderer
.....The crank castings in the LGM inside motion set have gone to be recycled into steam heat pipes and these fab things appeared. They were kindly machined for me by a sympathiser.
.......
Would your sympathiser be able or willing to share how they turned the cranks? I think I can work out the order things were done but it would be good to know.
 

Nick Dunhill

Western Thunderer
....well here it all is kind of fitted up. I can't get the big end caps on until I've cut the axles, so I've nearly come to an impasse. David White (Slater's) has promised an exciting new range of NER wheels, double sided (i.e. not flat on the back and with full profile spokes) and with all the correct detail. However they're still not available yet and the only bits of this build left are the bogie, radial truck, brakes and sand pipes. All these things require wheels!

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Looks like I'll get a bit of time to work on this......

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P A D

Western Thunderer
Hi Nick,
The loco chassis looks great. Not sure about the bedroom accessory though.

It could be just the angle of the photo, but the sand boxes appear to be staggered.
Cheers,
Peter
 

Nick Dunhill

Western Thunderer
Peter
I always like to keep a motorcycle frame in my spare bedroom! Well spotted on the sandboxes, sorted out now!
Thanks
Nick
 

Steph Dale

Western Thunderer
When I was a student a pal of mine had a VW Beetle. Over the course of a summer he started tinkering with a 'take it apart and put it back together' service. The workmanship was apparently excellent.

The problem was that as he gradually put it back together his parents went on holiday. The various trial assemblies got more serious and further into the house.

By the time his parents got back I understand he'd got most of the back half of a Beetle back together and running, in his parents' living room. Apparently they weren't best pleased and it left the way it came in, bit by bit, just rather more quickly than it had arrived...

Such are the perils of statements beginning 'I'll take that out to the garage in a bit...'

At least he didn't hold a party - but I suppose his parents may have thought differently. :rolleyes:

Steph
 

JimG

Western Thunderer
By the time his parents got back I understand he'd got most of the back half of a Beetle back together and running, in his parents' living room. Apparently they weren't best pleased and it left the way it came in, bit by bit, just rather more quickly than it had arrived...

I once stripped down, rebuilt and re-painted an LE Velocette in the big front room in my house in Scotland - with a slightly reluctant OK from the domestic authorities. :) It was a big house and we were completely re-doing a room each year and the big room was scheduled for a major make over the following year so was unused. But it was the most comfortable vehicle overhaul I ever did. :)

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For those that might not be old enough to remember the "Noddy Bike" . :) And mine was an ex-Met. Police bike.

Jim,
 

Peter Cross

Western Thunderer
I think I only ever saw ex police velocettes. We're We'y not a little 2 stroke that would hardly pull itself.
 

Peter Cross

Western Thunderer
Nice work on the loco. May I ask what breed the bike is. The frame looks very similar to my old triumph T100t.
 
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