Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Benjamin Richards

Pages: [1] 2 3 ... 24
2
Work and Events / Re: No. 9 Boiler Jacket
« on: October 23, 2025, 10:41:05 AM »
BTW, did we clearcoat #9 sheets after forming and before assembly on the locomotive as a preservative measure?  I know, a lot to chew here................ :o

No. The whole point of the exercise is that planished iron/Russian iron is naturally corrosion-resistant. The finish held up well for a long time, nearly 10 years, far longer than any coating would in this environment. Something happened last year which caused significant corrosion near the stack. Steam crew could comment further on the cause of this incident.

3
Work and Events / Re: No. 9 Boiler Jacket
« on: October 22, 2025, 03:31:14 PM »
There is a link in the following forum thread, but it is dead due to website updates  :(

https://forum.wwfry.org/index.php/topic,2669.0.html


4
...a real baby choochoo train...[/i]

I think I just had an aneurism.

Hopefully PT Barnum was right: any publicity is good publicity.

5
Work and Events / Re: WW&F No. 51 (The Brookville) - Official Work Thread
« on: September 30, 2025, 10:55:12 AM »
Hello,
I am looking for documentation concerning the Brookville Cranberry No.51 and especially all the necessary dimensions : Lenght, Width, axle center distance, engine hood height, etc...,because I am considering the complete construction of a 1/22.5 Scale Model.
If anyone could help me with my project, I would be very grateful.
Thank you
Daniel

*All dimensions in inches.*

Wheel diameter: 16
Wheelbase: 30
Frame (principal): 85L x 38W x 11D;
Frame (buffer blocks): 95L
Railhead to bottom of frame: 9
Railhead to top of running boards: 13
Railhead to top of hood: 48
Railhead to operator platform: 29

Exhaust stack above hood: 42
Seat height above platform: 18
Gear selector height above platform: 29

Hood length (incl radiator): 37
Operator platform length: 38
Radiator depth: 7
Radiator width: 19
Running board width: 10

6
Work and Events / Re: WW&F No. 51 (The Brookville) - Official Work Thread
« on: September 22, 2025, 08:59:11 PM »
I can probably get you a set of dimensions. Give me a week or two to get back to you.

7
Work and Events / Re: Fall Work Weekend 2025
« on: September 16, 2025, 11:46:15 AM »
Holy Batman, Batman.

8
Volunteers / Re: August 2025 work reports
« on: August 19, 2025, 01:12:40 PM »
Bit late, but a few weeks ago Bill Baskerville and I were working on lineside vegetation control. The magneto on the motor for the sprayer pump failed. After a bit of hand-wringing, Brendan suggested swapping it with the small chipper motor. I made the swap to finish the spraying task, and will repair the other motor for inventory. We also worked up a plan to finish the canopy on the sprayer cart.

9
Museum Discussion / Re: Saltillo Station rebuilt
« on: August 10, 2025, 09:23:43 PM »
Thanks Bruce. Context is key. Riegelsville is just one I happened to know about off the top of my head.

At the time of my reply, I did try to comb through some of the EBT-related social media pages, but I couldn't find the specific post Ted was referring to.

10
Museum Discussion / Re: Saltillo Station rebuilt
« on: August 04, 2025, 12:46:22 PM »
They would be wrong, though...I know of at least one other. Credit where credit is due.

Reconstruction of Riegelsville, NJ station on the Bel-Del was completed in 2023.

11
Volunteers / Re: August 2025 work reports
« on: August 04, 2025, 08:48:02 AM »
... tin roof (not rusted) ...

I got me a Chrysler, it seats about twenty...

12
Museum Discussion / Re: Your Treasurer Needs Help
« on: July 28, 2025, 09:56:15 PM »
One obvious thing would be for me to type the passenger counts directly into the relevant spreadsheet, if possible, rather than email them to you. Or if I could have some kind of template that could be filled out and directly copy-pasted rather than manually typed by you after being manually typed by me.

13
Thank you for the suggestion, Bruce. I wasn't able to search through the ICC reports as thoroughly as I would've liked. However I did find an answer from a different period technical magazine for enginemen, "Locomotive catechism; a practical and complete work on the locomotive" from 1911. 75 Candlepower peak output (942.75 lumens), which if my calculations are correct show a theoretical output at 800ft as approximately .01 lux, comparable to the light of a quarter-moon on a clear night. This is technically illuminating a man-sized object at the required distance but is so insignificant as to be practically ineffective.

However, the FRA guidelines don't mention lux, and only define required candela at specific angles which I'm assuming is in steradians. If this assumption is correct and I'm not confusing units of light measurement, then the following table shows approximate numbers for Candela at specific angles, calculated as (candlepower*12.57)/steradians

CP |Lux   |CD at 7.5d |CD at 20d
40 |502.8|32850        |5267     
75 |942.75|70078        |9876     

Now, this hinges on the assumption that the old document is correct in the light output, but any light source with a lumen output of >300 or candlepower >~25 will meet pure candela requirements

We have to be careful here. The FRA requirements call out candela values measured at a specific angle from centerline. This is not the same as simply taking lumens divided by said angles. A perfect point light source placed at the focal point of a perfect parabolic reflector produces a cylindrical beam of relatively constant intensity (candela), with everything outside the beam dropping immediately to zero. Introducing a non-point light source creates some beam spread with non-constant intensity, as does moving the light source off the focal point. This is how maglite flashlights work.

In layman's terms, the regulations want a light source which deviates from the ideal parabolic model in some specific way, such that most of the beam is on the tracks, but some of it does spill onto the sides. This is why I suggested field measurements as the most practical path to compliance. Attempting to model the luminous characteristics of an oil flame well enough to accurately predict the real-world behavior seems daunting, and I have formal training in this stuff.

You might get away with approximating a tungsten filament as a point source. Probably not an oil flame.

As an aside, you can at least get some bounds on things by assuming a perfect model. I need to sit down and go through this rigorously to provide more details, though.

14
What is the goal? Historical curiosity, or using a vintage headlight in service?

The easiest way to demonstrate compliance is to take measurements of a working unit with a lux meter. This skips all the theoretical stuff.

15
Seems we're not the only railroad doubling hills in the 21st century!

Pages: [1] 2 3 ... 24