Author Topic: CONWAY 0-4-0 3 1/2" GAUGE LOCO  (Read 174259 times)

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #450 on: May 20, 2018, 09:33:55 AM »
Hi

Thanks Chris, Cletus, Kim and Nick  :ThumbsUp:

Craig, have you got a photo or sketch of that set up

Cheers

Rich

Offline Roger B

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #451 on: May 20, 2018, 09:38:02 AM »
Good work on the boiler  :praise2:  :praise2: I like your solution to the reversing lever handle and the support stand  :ThumbsUp:  :ThumbsUp:  :wine1:
Best regards

Roger

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #452 on: May 20, 2018, 06:33:24 PM »
Hi

Thanks Roger  :ThumbsUp:

Back to the reversing lever.

The latch starts life as a bit of 3/8" x 1/8" steel bar. I won't detail every little operation. I hope the following series of photos will suffice but any questions just ask





















Cheers

Rich

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #453 on: May 20, 2018, 06:50:40 PM »
Hi

The latch block starts life as a bit of 5/16" square steel.

Likewise I'll show a series of photos















A pin of stainless steel with an M3 thread



Then all in the zinc plating kit





Finally a bit of video

<a href="https://www.youtube.com/watch?v=OR2MbXmGRt8" target="_blank">http://www.youtube.com/watch?v=OR2MbXmGRt8</a>

Cheers

Rich

Offline 10KPete

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #454 on: May 20, 2018, 07:34:49 PM »
Very nice, Rich! I love seeing tiny parts.

On your zinc plating set-up: What are you using for electrolyte?

Pete
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Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #455 on: May 20, 2018, 07:41:31 PM »
Hi

Thanks Pete  :ThumbsUp:

Re the zinc plating I did a topic here

http://www.modelenginemaker.com/index.php/topic,6305.msg128542.html#msg128542

Cheers

Rich

Offline Craig DeShong

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #456 on: May 25, 2018, 08:13:10 PM »
Hi

Thanks Chris, Cletus, Kim and Nick  :ThumbsUp:

Craig, have you got a photo or sketch of that set up

Cheers

Rich

Better late than never I suspect.
Craig
The destination motivates us toward excellence, the journey entertains us, and along the way we meet so many interesting people.

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #457 on: May 28, 2018, 09:22:33 PM »
Hi

Thanks for that Craig  :ThumbsUp:

I need to finish the smoke box before I can mount the boiler in the frames.

The smoke box door is available as a casting for about £18.00 but I am going to make one from steel.

Starting with a bit of 1/2" thick steel, mark out, drill and cut roughly to size.







Turn a mandrel and mount the blank







Turn the outer edge to size then with the top slide turned to its maximum profile as much as possible



Machine the back



So far so good




Machine a bit of 1" x 1/4" steel to make the hinge



Drill 6 holes in the hinge and tap 2.5mm. Drill 6 corresponding holes in the door









The original brass hinge bracket I silver soldered into the smoke box front was heated up to melt the silver solder and removed. Anew more sturdier bracket was machined from brass and drilled.







A new pin made from stainless steel





The parts given a zinc plating





The brass bracket silver soldered into the smoke box front and a trial fit



Looks ok

Cheers

Rich






« Last Edit: May 28, 2018, 09:26:23 PM by Firebird »

Offline zeeprogrammer

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #458 on: May 28, 2018, 09:38:02 PM »
Looking excellent.

I need to learn more about zinc plating. How long did it take to plate?
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #459 on: May 28, 2018, 10:25:51 PM »
Hi

Thanks Carl  :ThumbsUp:

Around 10 minutes for smaller parts I left the door in for about 1/2 an hour

Cheers

Rich

Offline crueby

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #460 on: May 28, 2018, 11:32:58 PM »
Hi

Thanks Carl  :ThumbsUp:

Around 10 minutes for smaller parts I left the door in for about 1/2 an hour

Cheers

Rich
Is the plating just for corrosion protection, or will that be the final appearance of the parts? Are you plating the brass as well?

Offline Kim

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #461 on: May 29, 2018, 03:32:10 AM »
Nice post on the smoke box door. I'm with you - making it rather than buying the casting just seems fun to me.  Not knocking the castings - to each his or her own.  But I like making it myself!  And you did a bang up job here Rich.

Kim

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #462 on: May 29, 2018, 06:08:53 PM »
Hi

Thanks Chris and Kim  :ThumbsUp:

The zinc plating is a bit of both, corrosion protection and appearance. Some parts like the reversing lever and stand will be left with just the plated finish while other parts will be painted.

Cheers

Rich

Offline Firebird

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #463 on: May 31, 2018, 09:40:40 PM »
Hi

A bit more work on the smoke box today.  Fairly straight forward but a few things worth mentioning

The dart starts life as a bit of 3/8" stainless steel turned down to 3/16". It then needs a 1/8" square machining on the end. To do this I used my latest acquasition a square collet block



Purchased from arceurotrade (usual disclaimer)

http://www.arceurotrade.co.uk/Catalogue/Collets/ER-Collet-Fixtures/Stevensons-ER40-Collet-Blocks

I went for the ER40 which will take a collet for 1". I also purchased a straight adapter

http://www.arceurotrade.co.uk/Catalogue/Adaptors-Sleeves/Morse-Taper-Straight-Sockets---For-Tang-Type-Tooling

Which means I can use all my MT2 collets

After machining the square its back in the lathe to turn down and thread M3



Reverse and hold in a 3/16" collet and turn the taper



Then back in the collet block to machine the 2 flats





The 2 handles are straight forward one being tapped M3 but the other needs a 1/8" square hole.

To do this I machined a 1/8" square onto some 3/8" silver steel, filed some notches on the corners with a triangular file and then heated to red and quenched to harden it





In the press to broach the square hole









After a clean up a trial fit. The cross bar needs no explanation







Cheers

Rich
« Last Edit: May 31, 2018, 10:17:22 PM by Firebird »

Offline zeeprogrammer

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Re: CONWAY 0-4-0 3 1/2" GAUGE LOCO
« Reply #464 on: May 31, 2018, 10:05:52 PM »
Nice!  :ThumbsUp: Loved the detailed post.
Carl (aka Zee) Will sometimes respond to 'hey' but never 'hey you'.
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