2020 Steampunk Quarantine Handcart Contest

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Asteamhead
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Joined: Tue Jul 31, 2012 1:59 pm
Location: Germany, Duesseldorf

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Asteamhead »

Hello RussN,
Here's may way of building not just punk or steam but heavy metall :). Maybe the oldtimers in this forum know the vintage Maerklin (or Meccano) metal building systems from the 1960s? A dream of mine was the construction of a locomotive made of those standard parts as realistic as possible.
My choice was a modern Berkshire type of the DB which could have been :idea: . I named it class 20 001, scale is 1 : 12 due to the given wheel diameters.You need a lot of parts which were not affordable during the 1960s :cry: But these days Ebay gave a chance to buy many vintage parts at decent prices :wink: .
Simple reason: Almost nowbody is still engaged in this hobby these days :( !
But it seems to be a perfect hobby during Corona crisis, isn't it :lol: ?
The locomotive helds 3 cylinders, (Timken) running gear and every other modern equipment of the 1950s. And using some parts of similar locomotives of that time (DB class 10).
The prototype should have made 120 km/h (75 mph) continously @ about 3.000 hp.
If anybody here will follow building that (freelance) engine in scale 1 1/2 " as a life steam model :?:

Long live lifesteam!
Asteamhead
Attachments
Frame of 20 001, scale 1 : 12
Frame of 20 001, scale 1 : 12
Frame of 20 001, 3rd cylinder to be seen
Frame of 20 001, 3rd cylinder to be seen
Cylinder group of 20 001
Cylinder group of 20 001
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NP317
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Location: Northern Oregon, USA

Re: 2020 Steampunk Quarantine Handcart Contest

Post by NP317 »

Now THAT'S creative!
Lots of work too.
Thanks for sharing.
RussN
Glenn Brooks
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Location: Woodinville, Washington

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

Asteamhead! Fantastic. Glad someone else has picked up the Challenge!

I’ll bet you could put a little boiler in the frame, Maybe build a little steampunk cab from foil, and set it out on a Journey!

:D :D :D :lol:

Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
Glenn Brooks
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Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

So, moving ahead with the wheel assemblies for the 2-6-0 bike train. Over the last few days, Knocked, pounded and drilled the old 3” roller bearings and axle stubs out of the primary drivers. One was frozen into one nasty ball of steel, grime and rust. Absolutely wouldn’t budge. Beat on it with a sledge hammer. No avail...

Finally mounted the driver up in the big lathe and center drilled the whole mass out, finally using a 1 1/2” NOS 3 MT drill bit mounted in the tailstock. It was marked 50 RPM on the tang. So whomp, whomp, whomp, whomp, whomp for 10 minutes to make the big hole. Then cold chiseled and whacked the remaining recalcitrant chunksters out back into the spindle opening in the South Bend. Love these precision machining methods!

Bored out the old rusted bearing surfaces on four of the wheels and now turning down some 3” round stock to press into the centers. Then will drill and ream for axles and make up the axle frames- somehow.

Here’s the morning shift quarantine steampunk guy at work.
075A2366-B003-41E3-ACD5-13A4CA936215.jpeg
And the work in progress:
3AE26500-28B1-41B3-A720-C17904E73E0E.jpeg
26C10E63-3273-436F-8E81-484AF2617D9B.jpeg
08C43CBA-AC4B-4DFD-AB6A-FA2F720EE1D0.jpeg
First time using the steady rest- rock steady with the big brass fingers supporting the old junk yard round stock:
A0C60F9A-7075-4D94-A183-B3DBC30E6921.jpeg
Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
Glenn Brooks
Posts: 2930
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

Quick followup. Finished turning four bearing insert replacements for the drivers. Each turned to .002” oversized for a press fit.
BB5B117F-3566-4C75-8265-81B26222B62F.jpeg
Also a snapshot of some hobby tooling for 12” gauge. At least when these babies drop on the floor, Its possible to see them, so you can pick them up again...
F7958E0E-38E2-4543-8BB1-56BAA54E0B57.jpeg
Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
Glenn Brooks
Posts: 2930
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

Looking for some advice on this 3 axle driver design. Thinking about welding up an articulated 6 driver boogie for the pedal power side of the bike train. The rear axle is articulated off the middle of the 4 driver wheel front portion. The two front wheels can pivot up and down independently of the rear and would be the chain drive wheels. This is basically the mars rover design for the wheels.

Anybody see a problem with the design? Aside from the sketch quality??
A6CA1B75-4905-4DD8-A671-D8E264CB8540.jpeg

Thanks much,

Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
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RussellCofIdaho
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Re: 2020 Steampunk Quarantine Handcart Contest

Post by RussellCofIdaho »

I don’t know why chaski has not been informing me of posts here but those wheels look very familiar Glenn! I have several but they are dual flange!

Anyway, following...
Russell Courtenay
Idaho - USA
unknownidaho.wordpress.com
Big trains and big dreams...
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Harold_V
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Re: 2020 Steampunk Quarantine Handcart Contest

Post by Harold_V »

RussellCofIdaho wrote: Mon Apr 06, 2020 10:05 pm I don’t know why chaski has not been informing me of posts here
Are you subscribed to the forum in question? You must be in order for the board to send notice.
Most importantly, does the board have your correct email address? It can send only to the one of record, so if the one the board has isn't correct, you must update that information.

H
Wise people talk because they have something to say. Fools talk because they have to say something.
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RussellCofIdaho
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Re: 2020 Steampunk Quarantine Handcart Contest

Post by RussellCofIdaho »

I got it this time! Does the board auto-subscribe when you make a post to a thread?
Russell Courtenay
Idaho - USA
unknownidaho.wordpress.com
Big trains and big dreams...
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Harold_V
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Re: 2020 Steampunk Quarantine Handcart Contest

Post by Harold_V »

RussellCofIdaho wrote: Tue Apr 07, 2020 11:13 am Does the board auto-subscribe when you make a post to a thread?
Hmmm. Not sure about this one, but it appears that if you respond to a post, you are automatically subscribed. You might take a look here:
https://www.chaski.org/homemachinist/ap ... p/faq#f8r1

H
Wise people talk because they have something to say. Fools talk because they have to say something.
Glenn Brooks
Posts: 2930
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

Getting ready to sweat the axle cores into the centers of my drivers for the steampunk biketrain thing...

This is a just a test run after setting up the old foundry and figuring out how to best position each wheel in the barrel for heating.

Also wanted to soak the ‘cores’ in the freezer for a day or so to work with max shrinkage out of the gate.

Russell, glad to see you are moving around more. I have a bunch of the dual flange wheels also- never did figure out what they were used for. An overhead gantry track maybe?? Dunno. Although I did use them to make up my turntable couple of years ago. These big single flange ‘drivers’ are all I have left in this size 7” OD or thereabouts. Hoping they don’t add to much weight to the bike train. Definitely a Steampunk look though.

Here’s the foundry set up:
1070C7CE-A5CB-4F21-A5EC-43D032D8A4A3.jpeg
6431104B-FDCC-4F61-893D-8D1B8174EE15.jpeg
159922F9-F366-46E9-9C7B-D866D8A43586.jpeg
Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
Glenn Brooks
Posts: 2930
Joined: Mon Nov 10, 2014 1:39 pm
Location: Woodinville, Washington

Re: 2020 Steampunk Quarantine Handcart Contest

Post by Glenn Brooks »

Fired up the forge this afternoon and with great trepidation heated up the first wheel and sweated in the core. My previous attempt a year ago was a miserable failure. (I think I only got up to around 450* on the Barbi. Not hot enuf...)

Much to my amazement the core dropped in place with clearance to spare - then within 10 seconds or so, locked in place. I’ve read how easy it is to sweat steel tires onto iron rims. Now I know... its true

Easy to do, if you heat the work up to cherry red- around 1000 -1100*F.

Real Steampunk stuff, fur sure.

Heat source was a BBQ propane bottle hooked up to a 100,000 BTU weed burner.

Note: my cores were chilled in our freezer for 24hours, so had shrunk a little bit- a thou or less. But all you need is a little.

Also, I tried to machine the cores to close to .002” over the nominal diameter of the wheels. (2.300” ID).

However I did try to measure one of the cherry hot wheels with a mic (very quick measure) and found almost .018” expansion. Maybe not precise, but at 1000* surface temp 1/2” away from my pinkies, whose gonna dawdle around to re confirm. I’ll recheck this same measurement tomorrow to see what it looks like at room temperature and report any major discrepancy. Also not sure if the wheels are cast steel or cast iron - have no idea what the rate of expansion could be for these composition types.

Anyway, all four cores dropped right in place and set up nicely in very short order. I think the chilled, icy frosting on the outside of the cores helped ‘quench’ them in place a bit, by rapidly cooling and shrinking the inner heated ID wheel surface, just enuf to engage them in place.

One other thing I learned. I could very likely braze the cores into the wheels at these temperatures. Jugst heat to red, pull the propane burner and feed silver solder rod into the gap. Maybe next time I’ll experiment.

Here’s some pics.

Simple forge. Made from a small 25 gal oil drum and packed with rock wool heat resistant blanket material. The wheel is sitting on two fire bricks, with sufficient heat distribution to more or less heat up all parts of the wheel, top and bottom.
A646DBE2-2D07-4990-A98D-594C19AEBD96.jpeg
Data window of the IR gun, showing temp readings of the cast iron wheel surface
AE3615C1-DF4A-4866-84E8-B9FB50A1BBDC.jpeg
0CC72A3F-717B-4654-9C4D-B0200C58F566.jpeg
The straw and blue colorations of the steel cores, below, was caused by heat drawn from the cast wheels into the core.
764331AD-25EE-4BA3-9898-F8006A197725.jpeg
Picture of the IR temperature gun I bought on line for 30 bucks...
07C57D60-EE5A-4475-870D-BAB0EC7F39B7.jpeg


Glenn
Moderator - Grand Scale Forum

Motive power : 1902 A.S.Campbell 4-4-0 American - 12 5/8" gauge, 1955 Ottaway 4-4-0 American 12" gauge

Ahaha, Retirement: the good life - drifting endlessly on a Sea of projects....
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