Over The Post
Bless you my children
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Ophidian Old Boys
It's one of his many vices.
Official Team Thread 🏉🥇🐍Ophidian Old Boys S39 Official Team Thread: magnus serpens duo pocula nostra habet 🏆🏆
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It's one of his many vices.
Mrs Turbo
🏆OOB's PREMIER 🏆
Happy days Postie... where did you run your 5guage?View attachment 2200139
Shit, that was nearly 30 years ago nowMe and my 5" gauge steamer.
View attachment 2200140
That was at Korumburra around 2005, a full day driving experience. Did shunting and drove the goods train from Korumburra to Leongatha and back.
View attachment 2200143
And this was me in 1979, driving a two-week-old DF around the loop on an excursion.
Back then I was a volunteer at the Glenbrook Vintage Railway in Auckland, and spent most weekends in the workshop or on passenger duties and occasionally firing one of the two steam locos.
Looks much like the one that used to run in Gosford.
One of my ex's (pre Turbo) had many model steam locos on his property.
They were loads of fun to create events around and such good time wasters on the weekends
Over The Post
Bless you my children
- Nov 17, 2007
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That was at the Hutt Valley model engineering club in Wellington, NZ.
I brought it over with me in 2001 but ran into problems getting the boiler certificate recognised here and eventually gave up and sold it to a guy in Kentucky, of all places. They use 4-3/4" gauge in his part of the world but he was happy putting down a 5" gauge line for it.
I brought it over with me in 2001 but ran into problems getting the boiler certificate recognised here and eventually gave up and sold it to a guy in Kentucky, of all places. They use 4-3/4" gauge in his part of the world but he was happy putting down a 5" gauge line for it.
Over The Post
Bless you my children
- Nov 17, 2007
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- Ophidian Old Boys
DemurePrincess I've been asked by the caretaker to pass on a message about respecting our rules and having a shower before bathing, and could you please ensure you pay particular attention to your feet. I said that you were an ex-Old Boy and he was out of line, but he insisted.
Poor Gizmo
DemurePrincess
BadAss Bomber
View attachment 2200768
DemurePrincess I've been asked by the caretaker to pass on a message about respecting our rules and having a shower before bathing, and could you please ensure you pay particular attention to your feet. I said that you were an ex-Old Boy and he was out of line, but he insisted.
Poor Gizmo
Umm! Thank **** I am an ex Old Boy!
Touch your own god damn feet you filthy animal
Over The Post
Bless you my children
- Nov 17, 2007
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Filthy animal?
There's been no complaints about my feet, Prinnie!
There's been no complaints about my feet, Prinnie!
- Nov 9, 2006
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- Fighting Furies, Ripper GC and Mizzou
DemurePrincess
BadAss Bomber
I am complaining… hear me… loud and clear.. I’ll cut your feet off at the ankles if you mention you minging feet again!
DemurePrincess
BadAss Bomber
DemurePrincess
BadAss Bomber
Yep. I spoke to him the other day and he’s about to get another ‘**** you’ phone call in a second… any messages???
- Nov 9, 2006
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- Fighting Furies, Ripper GC and Mizzou
Yeah, hope to see him posting soonYep. I spoke to him the other day and he’s about to get another ‘**** you’ phone call in a second… any messages???
I am complaining… hear me… loud and clear.. I’ll cut your feet off at the ankles if you mention you minging feet again!
DemurePrincess
BadAss Bomber
I’ve told him this already… he’s got stuff going on and his head is hurting him already this year. But he’ll be back. Stress less.
Tigerturbulance
245kg of Love Muscle
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- #165
yes he said he is sick of PMs from the Hippodrome
Braklet
🐍 OOB 🏆🥄🏆🐍
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What fuel do you use to fire those miniature boilers, OTP? Diesel oil?
Mrs Turbo
🏆OOB's PREMIER 🏆
when you next chat with kenneyswarriors - send him my... and the OOB loveYep. I spoke to him the other day and he’s about to get another ‘**** you’ phone call in a second… any messages???
DemurePrincess
BadAss Bomber
Ofc. Absolutely xx
Over The Post
Bless you my children
- Nov 17, 2007
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- 28,197
- AFL Club
- Richmond
- Other Teams
- Ophidian Old Boys
Coal, dear boy. Unfortunately hard to get the right stuff. Coals vary in quality and combustion properties, and you need specific types to run properly. "Welsh steam coal" is the holy grail but even that is dramatically lower quality these days. Believe it or not, you used to be able to buy coal from a specific pit or mine, and you still can if you want a containerload and that mine hasn't been closed.
Because of this, alternative fuels have been used such as "char" in Australia where powdered low-quality coal bricks have been baked to drive off the volatile gases, leaving a high carbon residue called char. This burns clean and hot (good) but generates a shit ton of sparks (bad). Some guys in the US use petroleum coke which behaves much the same.
The larger the fire, the less important (within reason) coal quality is. With the small fireboxes in model locomotives, it makes a huge difference. So the locomotive is made and tuned to work with a certain grade of coal. The round door in the middle of the cab above is the firehole, you feed the coal in with a small narrow shovel.
The coal sits on a grate made of steel bars, and as it burns air comes up through the gaps in the bars. The hot gases then pass through tubes in the boiler, transferring heat to the water which boils and makes steam, and then into the smokebox and out the chimney.
But its not going to do it by itself. You need a draft or air current to pull the gases to the front. No draft = the fire just smoulders and dies. So we use a "blower" which is a jet of steam that goes up the chimney and pulls air through with it. When the engine is moving, the steam in the cylinders is exhausted through a "blast pipe" up through the smokebox and out the chimney, and that creates a massive draft. Hence you only ever need the blower when the loco is stationary or if the throttle is closed and it is coasting.
The harder the engine works, the more steam it uses, the more the exhaust pulls, the hotter the fire burns, the more steam it makes. It's a brilliantly simple system.
Except its very dependent on everything being set up right to suit the coal being burned.
The grate bar gap width is important - too small, not enough air gets through = incomplete combustion and lots of smoke. Too big, too much air, the coal burns too quickly, creates holes in the fire, cold air gets through = no steam. Too small, the gaps block up with ash from the coal and no air gets through. Too large, chunks of unburnt coal fall through.
The setup in the smokebox is critical. The blast pipe must be exactly centred in the chimney and must be big enough to allow all the exhaust steam to escape without causing back pressure, but small enough to give a strong blast. (Think of blowing through a hose vs a straw.) The height of the blast pipe nozzle in relation to the inside of the chimney also determines how much vacuum it will create (and therefore the amount of gases it will suck through the tubes).
And the amount of gases being sucked through determines the rate of coal combustion. Too much suck and the coal burns too hot and creates "clinker" where the impurities in the coal form a glass-like slag (which kills the fire). Not enough suck means not enough air which means smoke which deposits unburned particles of fuel on the tubes which lowers heat transfer. And some coals generate loads of smoke and tar which **** things up no matter what you try.
And the smokebox must be perfectly sealed - any tiny air leak kills the vacuum and it won't steam.
There is a shit ton of science related to steam engine firebox and front end design, you're juggling so many variables. That's why its such a pain when you can't get a consistent supply of the coal that works with your particular engine. In the US hobby, oil firing and propane are more popular than coal for this reason, and unfortunately the rest of the world has to follow due to the coal supply situation.
Anyway, that's my free ted talk for this morning, more info than you ever wanted but it's saved me from an hour of writing safety documentation
Mrs Turbo
🏆OOB's PREMIER 🏆
tell him I was thinking of him and then about Vices...
and this came to mind.
and then this
Missing him and hope he's doing well
The_Kraken
Club Legend
I just finished my first team-bonding session led by TT. It was not what I expected.
DemurePrincess
BadAss Bomber
Do you feel violated?
The_Kraken
Club Legend
No. Just greasy.
DemurePrincess
BadAss Bomber
Hate that shit! He’s got no idea about spacial awareness! I’m sorry that happened!
We have space at the Bombers if it gets out of control for you xx
