![Image](https://c1.staticflickr.com/5/4695/39576328054_244c234bc1_b.jpg)
Then on a very hot and humid evening with the fan on notched up to #2 , ( I saw a fish swim past me last night) I started the process of making the lifting links.
![Image](https://c1.staticflickr.com/5/4651/39390245435_8fb7982da5_b.jpg)
About the corks, do they have a piece of bamboo in the middle to allow air to pass ?
Tried to reply to your post on the Yahoo 16mm steam group, but as usual the Yahoo circus seems to have lost the plot and the reply......Hydrostatic Dazza wrote: ↑Wed Feb 21, 2018 9:27 pm As I contemplate the boiler construction I have a gander at the latest AMBSC Sub Miniature boiler code.
Page 5 2.3.11 "Boilers with unflanged plates have a minimum plate thickness of 3.00mm."
B.Wilsons drawings call for 2.00mm copper for the tube plates/crown in the coal fire loco.
That made me giggle indeedHydrostatic Dazza wrote: ↑Wed Feb 21, 2018 8:10 pm ...I drilled .050mm oil holes again , just for kicks and giggles...
Whoopsbambuko wrote: ↑Thu Feb 22, 2018 4:06 pmThat made me giggle indeedHydrostatic Dazza wrote: ↑Wed Feb 21, 2018 8:10 pm ...I drilled .050mm oil holes again , just for kicks and giggles...![]()
Decimal point with a mind of it's own![]()
11thHour wrote: ↑Sat Feb 24, 2018 1:44 am Hi Dazza,
Andrew Allison’s boiler design for Jack, which has a boiler diameter of 50.8 mm, shows the following dimensions on plate thickness-
Tubeplates & backhead. 3mm
Outer firebox wrapper. 3mm ( it is a wet leg design)
Inner firebox wrapper. 2mm
The drawing is dated 27/10/2015 and published in AME June 2017. The drawing is noted as compiling with AMBSC pt3, but doesn’t say which version.
Andrew is presumably close to those who frame the code.
I am no engineer, but I am guessing the inner firebox wrapper, which forms the firebox crown in the Allison design, is thinner than the other plates so that a failure will cause an implosion into the firebox rather than an external explosion. In the Wilson design the crown is combined with the backhead, which I am guessing will be the sticking point for your argument.
If you need to go the 3mm route, contact me offline for a vaguely possible solution.
Tim
All is smooth so far, I followed B.Wilson's drawings but for the change to exhaust sideways. I am concerned about leakage. If all gets to much, I will gum the lot up with High Temp sealer and the drains will become cosmetic fluff.tom_tom_go wrote: ↑Sun Feb 25, 2018 9:06 pm Interested to see how the servo drains in action once the loco is ready to power under her own steam.
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