Finishing off a 5" Gauge Simplex Loco

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Stilldrillin:
Some more areas, not as you thought Stew? :scratch:

But, ok with it, still. :thumbup:

Hmmm...... Eternal optimism!
Another orphan arrives here today. Fingers crossed......

David D

Rob.Wilson:
every confidence you will sort it Stew :thumbup:

Whats the specs on a Super Simplex ? is there much between them .

Rob

sbwhart:
Hi Rob

The supper has a slightly longer boiler with extra supperheater eliments, cylinder are a 1/16" bigger, the wheel base is longer by about 3/4" and the coupling rods have a different articulation method, and the boiler feed pump is of an improved design.

Apparently the supper is supposed to have improve efficiency, but from what I can find out ther's not much difference. :scratch:

I wasn't aware of any of this until it was to late :Doh:

sbwhart:
A bit more progress I seem to swapping about on this I like to work a bit more methodical, but I keep having to put parts aside whilst I wait delivery of something, I've tried planning ahead but my plans keep comming unstuck.

Cut a sqaure in the streacher that covers the feed pump eccentric so that it can be lubricated.

Then the 1/4 dia s/steel balls arived so back onto the feed pump.

Made the front cover and gland this calls for an odd thread size 5/8 * 26 BS Brass, luckily I was able to borrow a tap and die from a club member.

To seat the balls you have to give tham a sharp square bash using a drift.

Then carfully measure the depth to the ball.

Then work out the length of the fitting to give the ball a 1/32 lift so that the valve works correctly.

These are the pump bits

Then I had to put this aside whilst I took delivery of some 3/8 steel plate for the mounting steacher.
:doh:

So on with something else

Stripped the cylinders down to take a look, some good bits some bad, the steam galleries on one cylinder had been quite mangles, the other had just been drilled under size, not much I could do with the mangling the best i could do was to open up the undersize ports in the other cylinder to balance the steam flow a bit better. So set it up in the mill and lined the holes with a drill and a square by Mk 1 eyeball then opened them out to 1/8

Then with swiss files joined the holes up.

The valve boxes had some studds misssing, so made some of these but I had to turn down some 4mm bar to 3.55 (4BA) for this I used this little gadget I've shown this before but it won't harm to show again.

Itys a small moving steady

To use make a bush for the gadget the size of the raw bar.

Then turn a spiggot on the end of the bar the size you want to turn down too, to set the tool in the gadget

Put the bar in the lathe roughly centre the gadget start the end of the bar into the bush and off you go.

Cut the studs of to length and thread job done.

Stew

mzt:
Gotta make myself that small dia turning gadget, someday.

Marcello

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