Supporting > Vehicles & Models

"Dribbler" Loco

(1/3) > >>

Johnmcc69:
I'm wondering if any members here have one of these engines. Quite an interesting piece of steam history. https://en.wikipedia.org/wiki/Birmingham_Dribbler
 My original post at HMEM is here: https://www.homemodelenginemachinist.com/threads/dribbler-loco.32937/

 I'm trying to recreate drawings for a model built from bar stock. (The original used castings)
 I'm getting closer to finishing the 3D models & will then create drawings & post them.

 I'm still not sure about some of the details such as how the boiler is attached to the frame (chassis?) & not real happy with the burner set-up. (a "tray" slides up from the bottom...(?)

 Just thought I would pick the collective minds here as well.

 John

 
 

crueby:
For attaching the boiler to the frame, either use bands around the boiler with screw block at the joint, or blind bushings in the bottom of the boiler?


Cute little loco!

Johnmcc69:
 Thanks Chris!
 I'm leaning towards soldered lugs on the bottom of the boiler & attaching it that way, may have to design a soldering fixture to hold them in place during soldering. I hope to see how that looks later today.

 Another question for you: Do you use the PMR steam whistles on your beautiful models? I'd like to use it, but it just seems so tall & out of scale on this model. I may have to do some digging to see if I can find some dimensions & info on the Wilesco & Mamod "Bell" style whistles.

 John

crueby:
I agree, the pmr whistle would be too big. A Mamod one would be a better fit for a small boiler. On my smaller ecale models the whistles are dummy ones.

crueby:
For the boiler lugs, a common way is to drill a hole in the shell, and have a bronze bushing come through the boiler shell from the inside, the bushing having the inside end larger so it can't come through. That way there is mechanical strength as well as the solder. The bushing would be drilled and tapped halfway through its length for a screw from the frame. If the boiler sits in shallow cradles, one bushing would be enough.
But, lots of ways it can be done, this is just one.


Watching along, this looks like a fun one!

Navigation

[0] Message Index

[#] Next page