What About The Bee
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Posts posted by What About The Bee
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27 minutes ago, JJ73 said:
I didn't know that you are in America🚂
I never made a secret of it JJ. Yes, I am in the USA. @JJ73
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Thanks JJ. That is a very old joke in the US.
On a different note, Keith Appleton over on YouTube does repairs on live steam models, live steam toys, those ride on live steam locomotives and indeed has a Showman's Engine. Valve jobs. Triple expansion engines. Steam powered pumps, etc. The man is a master of steam.
He is a bit of a curmudgeon, but very clearly knows his stuff. If you want to see and learn about live steam, Keith Appleton is the one to watch.
https://youtube.com/@keithappleton?si=DhsYZccb40UexoS6
Bee
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0 to 60 mph in....
Got a calendar handy?? 😄
Bee
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4 hours ago, AlloAllo said:
So the capacitor is not really necessary?
The RC network (resistor capacitor network) was to suppress electronic noise that would be picked up on analog TV and Radio receivers. Over The Air receivers.
The RC network is really an artifact of days gone by. Nothing to do with the performance of your locomotives, merely a nod to an antiquated broadcast method. You may hear the noise if you tune into an AM (amplitude modulation) radio station if conditions are just right. The noise emitted by the locomotive is broad band noise, yet at a reasonably low amplitude.
Bee
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This update will begin with reference to the 1833 Ackermann aquatint, by Shaw.
I previously stated that there was no image evidence of any seating. I was wrong. I have finally noticed some! There are some rectangular shaped lines under the soldier. They appear to be evidence of the seat. A bench horizontally, supported by upright posts on the sides? My seats may have more members than the illustration, but at last, we can see what Shaw saw.
Further, the end benches must be extremely shallow. They are not visible in the front of the carriage, at the elliptical opening. If it was deep, we would see it. But the passenger in the blue dress has her thigh at quite a steep angle. As she is indeed seated, this can only imply a very shallow seat. I have drawn mine at a scale 6 inches
The buffer beam is detailed. This will have the wire couplings I applied to my 1980s Rocket Carriages, R796. I cannot print coupling posts, they will simply shear apart under load.
Which brings me to the end to end transmission of drag force. The wire must be attached to the carriage. I have selected a generic m1.6×3 screw and corresponding flat washer. When tightening this screw, the washer should remain perpendicular to the screw, otherwise, the wire can be ejected out. The solution is easy, put a wire on both sides of the screw. That is when I realized, making that spacer wire continuous from one screw to the other transmits all the drag force from the lead coupling to trailing coupling. I will not be trying to pull the carriage apart in consist, all the force goes thru the wires and washers.
The Swingback Church Pew 2nd Class carriage is ready for print.
Next update will be actual parts.
Bee
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57 minutes ago, AlloAllo said:
... zips along, then slows to a crawl, then stops...
Could you have a bit of fluff winding up on the internal mechanism. Something that mechanically binds up. Especially so as
59 minutes ago, AlloAllo said:The light stays on.
Meaning there is still power to the locomotive. The motor should turn, but cannot
Bee
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I know this will sound like heresy, but here goes!
Why not make your garden shed look like 7 Compartment Radial, instead of the franken-modification to a one of a kind lavatory car. (Franken-mod = Frankenstein)
Firstly, even with a photograph, the internal layout will be decidedly unclear. Moreover, do you want an outside bathroom and all that entails? So in my mind, it is the external appearance that is important. If you insist on lavatory, make the windows frosted.
I do understand the drive to bring it back to original, but my internal debate becomes the definition of original. Is that Lavatory or 7 Compartment Radial?
Just my 2 pence ThreeLink, an opinion from the cheap seats in the peanut gallery.
Bee
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44 minutes ago, threelink said:
A photo of a model would be very acceptable in lieu of the prototype.
Perhaps one of the lavatory carriages here? http://londonroadmodels.com/carriages_pages/lnwr_carriages.php
There are 11 references to LNWR lavatory carriages on that page. While I cannot possibly know which one is appropriate, if any at all are, the page may provide a clue.
Bee
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12 hours ago, Monty999 said:
...I can't find where it attaches back onto the shell and now the loco is running awfully.
Monty,
This bit of linkage is not the root cause for the "loco running awfully". Yes, it needs to be put back, but this linkage would only provide a tiny bit of drag to the motion.
It may be the wipers causing extra drag. Or the valve gear is hitting itself because it got yanked when the part came off. Or a myriad of other potential issues.
But a tiny bit of linkage missing? Nay sir, that isn't the issue
Bee
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20 minutes ago, Toddie86 said:
I'm just talking to myself at this point
No sir, you are not talking to yourself.
Ntp had the diagnosis straight away and you are presenting your solution. That's exactly what the forum is about.
If you file the chairs too much, the rails will be released, leading to all sorts of subtle issues, like gauging.
Bee
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Hello @Monty999
The part appears to be a component of the valve gear / connecting rod assembly. The oversized screw hole on the one end is a give-away.
To discover which one and where it goes, compare the left and right side views. The side elevation views. You should be able to spot the side that still has the part, whilst the other side does not.
That is, the valve gear is symmetric from side to side
If you like, post images of the two sides. Helpful hints on reassembly may be in the offing
Bee
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I look at it this way @LTSR_NSE
I'm already in trouble with SWMBO for the pre-order, which the Admiral did not approve. May as well be in trouble once for everything than twice when the extra items arrive separately. Therefore, I would be one to definitely add.
I do recognize the invoicing issue as valid, but his could be resolved with a separate invoice. That is, an invoice related to the pre-order; and an invoice related to the add-ons.
Overseas customers, like the lads in Oz and those of us Stateside, are dinged heavily for shipping. The plan suggested would help us and Hornby out.
Bee
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I do think Hornby are missing an opportunity here.
When a pre-order comes into stock, why not ask me what else I would like to add to my shipment. Some matching rolling stock, perhaps? A bit of kit for the layout, maybe?
Give it a 2 or 3 day window until closure. Offer a modest discount to encourage an additional sales, it it suits Hornby's fancy.
The iron is hot. Strike it!
Bee
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Hi 81F
At the risk of offering something you likely already know, the Kaydee website offers an Airfix page
https://www.kadee.com/nem_airfix
Bee
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Happy to help Fred.
When I first started the printing portion of my exercise, I thought to myself: that seems a triffle high. But I came to realize that their staff deals with the physical printing, the chemicals, resins and etc. I never have to worry about room temperature, or print bed parallelism with the horizon. I need only worry about the design, not the printing process. If Shapeways says they can print it, they do.
Its also been wonderfully energizing. I have little expectation that any firm, Hornby included, will ever cover all the LMR carriages. Yet now? No worries, I can make the ones I want.
Top row, center: Even the first class Lacey and Allen Carriage. I believe the LMR had two of these.
And I have not forgotten about LMR locomotives. I do expect Hornby will do Planet someday, but Twin Sisters? Never. Experiment? Never. Caledonian? Never. So as I gain experience, I can see locomotives in my future.
Just as 81F is doing now.
Bee
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Hello Fred
While I have not yet developed a formula for pricing parts from Shapeways, there are some key input criteria
1) Material selection. You can literally print in gold, platinum, copper or a variety of plastics. Each has a different unit cost.
2) Spacial volume. The part occupies a space in the print volume. A cubic extremity is computed by Shapeways. You pay for this.
3) Part volume. How much material does your part consume, independent of occupied spacial volume.
4) Minimum price. I have yet to be quoted a price under 5 USD for any part, no matter how small it is.
5) Express handling. Shapeways will do a hurry up, but you pay for it. I always skip this.
6) Shipping and overhead. This fixed price is added to each order, independent of the number of parts. Once I figured this out, I always gang many parts together. It is a big cost increment to ship each part individually.
An example: The floor of the cattle waggon needed multiple passes to get a perfect fit. I chose to make it in fine detail plastic, tan. It didn't occupy too much print volume, nor consume much material. I was above minimum price. I skipped express. Shipping and overhead was more than the part! Tax applies, of course. Each turn was ~30 USD.
Bee
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I agree Colin, should be an interference fit.
Bee
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Hello @robcat
Ordinarily, I would say that these parts should be a light interference fit. The wheels would have just slightly larger outer diameter (1 or 2 thousandths of an inch) than the inner diameter of the rim. The parts would be pressed together. On a real locomotive, a temperature differential is used to expand the rim with heat. But as the rims are loose under the same temperature regime on your locomotive, there is not an interference fit. Hmmm
A product like Loctite 603 is used to bond cylindrical parts (like pins in bores), where an interference fit is generally not desired. With your recognition that a bonding agent may interrupt continuity, a dab of electrical conductive paint across the two will preserve the electrical path.
So before doing anything, you should understand the electrical path. Where are the wipers? Do the wipers touch the rim? If so, continuity to the wheels is irrelevant except for a short. Do the wipers touch the wheels? Yes, conductive paint will be needed (or similar). Do the wipers touch the axle? You must have an insulated wheel to prevent a dead short.
Once you know the electrical path, an informed plan can be developed.
Bee
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You are always quite welcome LT&SR_NSE. I am happy to answer your question. I do believe in being thorough 🙂
I look forward to the Shapeways printing portion of the question. Particularly the Swingback 2nd, as it includes a pinpoint axle clip, as well as working swingbacks.
Exciting days!
Bee
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Hi LT&SR_NSE
A while back, you asked what an LMR second class carriage would properly have looked like. Here is the consolidated list of the carriages that I am aware of.
Stephenson's 2nd Class, with and without Canopy
Shaw's Swingback Church Pew 2nd Class
Bee
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An update from last week
The chassis, hornguides, horn blocks, spring and wheels are added
The Shaw drawing of this carriage is in consist, and the details are kind of small. The hornblock and hornguides are actually the pinpoint clip, while the spring is a separate assembly.
The insertion of the pinpoint axle requires that the elongation for fine detail plastic be less than 4%. I carefully engineered this to have ~0.17%. A safety factor of 23+.
Still a few details to add, but the functional pinpoint clip shows clearance under all 3d arrangements of the pinpoint axle.
Bee
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Here, I complete the survey of known second class carriages of the Liverpool and Manchester Railway.
These have either a simple drawing or text without any corresponding drawing. We know they existed.
From the Southern Reporter and Cork Commercial Courier 1 August 1829. More than 1 year before the LMR opened.
Quote: Near the entrance of the small tunnel at Edge Hill, the proprietors of the rail-road have erected extensive buildings in a spacious enclosed yard , for the construction of waggons for the conveyance of goods, carriages for passengers and other pieces of machinery. Several elegant machines of various construction are already built, and others in a state forwardness.
Odds and Ends Number One
The most simple machine, and that slated for the cheapest conveyance of passengers is neat and appropriate. Without any covering overhead, the passengers sit in two rows, (parallel with the road,)back to back : a common rail serving for support to their backs, their feet resting on foot-boards, in the manner of a double Irish car¹, the four wheels being under the seats.
Odds and Ends Number Two
The next machine is a long coach, with doors at each end. On the outside of the body, and overhanging the wheels, are seats for outside passengers, who will sit sideways: Irish car fashion, with a projecting roof over their heads. This coach will carry sixteen inside and sixteen outside passengers.~~~
Odds and Ends Number Three
Crane is a reliable first hand artist. He provides us with this unique image of two 2nd class carriages. The shape is reminiscent of the very early Booth 2nd Class carriage. We know that this is meant the way it is drawn, as the nominal blue 2nd carriages are shown with this one.
The canopy and doors have a shape illustrated in no other aquatint. Of special note, the stirrups to mount the carriage are as Hornby have modeled!
No text accompanies the image.
Bee
¹reference: Irish Style Jaunting Car
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Carriages / Wagons for Locomotion No.1
in General Discussion
Posted
Throughout this thread, we have examined several candidates and finally arrived independently at the Dobbins/Backhouse images, just as the researcher at Friends of the Stockton and Darlington group did. The solution for both researchers identical.
With Locomotion No.1 edging closer, we all would like some rolling stock to go with the locomotive. Of course, Accurascale's chaldrons are perfect for this.
But what if you wanted the passenger carriage Union or Defiance? We have Longridge's wonderful print, showing this carriage type in consist. What other waggons are in that consist? Chaldrons.
What if you wanted the passenger carriage Experiment, as illustrated by Dobbins and Backhouse. Wonderful drawings, with the carriage in consist. What other waggons are in those consists? Chaldrons.
Therefore, to properly scale those passenger carriages, they should be modeled in reference to a standard, to wit: an Accurascale Chaldron.
To that end, I've reverse engineered and sketched up an Accurascale Chaldron.
No details. No split spoke wheels. No flanges. Just a basic chaldron, unadorned.
The standard candle, defined.
Bee