Of course the fire cannot keep up with steam usage, because the blast pipe is exhausting to atmosphere. There is no induced draught on the burners, nothing to pull the flames along and through the boiler. Once a smokebox is fitted, and the blast-pipe exhausts up the chimney, it will draw the fire to heat all of the boiler. At the moment it is probable that the water is only being heated in the vicinity of the firebox. The original boiler was probably perfectly OK, it just needed to be finished off with a smokebox, and correctly aligned blast-pipe and chimney.
A fair point and I am aware. That said I know that draught or no There needs to be room for air to be drawn across the burner and I did not leave sufficient room for air to get into the firebox. I do think you are correct in that water was only being heated in the vicinity of the firebox however. The mk 2 boiler and burner will address the issues. Thankyou for your welcome comments. Ed
Martyn, I live in hope although it probably doesn't come across very well. I am the sort of person who does a bit of thinking then 'bends' metal and then often thinks 'I should not have gone about it in that way'. LOL
Wow Ed that looks amazing, thoroughly enjoyed the video, the boiler build looks very professional. I'm sure there's an 0-8-4 tank out there for the narrow gauge I'll try and dig out a picture.
Thanks Graham. Can't put my hand on it, but I have a book somewhere that shows a similar loco albeit if I remember correctly a main line gauge. Something to do with Welsh coal mining possibly.
I love freelance locos like this, even better when it's a beefy tank loco - Three cylinders, what a sound! Best of luck on testing the new boiler, it looks incredible, and ought to get more surface area. What gauge is this? 45mm?
yup it is 45mm. Sadly as we also in process of buying and moving house it may take me a while to make meaningful progress. Have to see how it goes. Many thanks for your interest. Ed
I love the rolling track! Can you adapt it so you can find the max speed? Did the smoke box blow off? Did the boiler hold under pressure? I need answers dad 😂
Rolling road will adapt to any speed, but as u approach speed of light the loco may need to be strapped to the bench! LOL. Smoke box should not 'blow off' unless some extraordinary circustance arises such as the entire boiler explodes. LOL. By design a smoke box should be operating at less than atmospheric pressure in order to 'draw' the fire. Yet to test the boiler under pressure. xx
Well spotted. I believe I have now addressed that leak, but time will tell as they say. I have to get around to testing the boiler cos if that has a problem then little else will matter. LOL
Quite right, but I have not got to that stage of testing/running this loco. I don't think I have the valve gear totally properly set, but as I got the loco to run I have decided to leave fine tuning for later on.
Quite the unusual beast. Love what people come up with when left to design their own locomotives.
Many thanks, but as I hinted in the vid I think my passion for this build is somewhat diminished. LOL
Ed
Of course the fire cannot keep up with steam usage, because the blast pipe is exhausting to atmosphere. There is no induced draught on the burners, nothing to pull the flames along and through the boiler. Once a smokebox is fitted, and the blast-pipe exhausts up the chimney, it will draw the fire to heat all of the boiler. At the moment it is probable that the water is only being heated in the vicinity of the firebox. The original boiler was probably perfectly OK, it just needed to be finished off with a smokebox, and correctly aligned blast-pipe and chimney.
A fair point and I am aware. That said I know that draught or no There needs to be room for air to be drawn across the burner and I did not leave sufficient room for air to get into the firebox. I do think you are correct in that water was only being heated in the vicinity of the firebox however. The mk 2 boiler and burner will address the issues. Thankyou for your welcome comments. Ed
Thanks Ed, Always enjoy your videos. Good luck with the pressure test.
Many thanks. Trying to move house at present, but will try and find a bit of time for the pressure test before doing more work on the loco.
Ed
I love your "no hope" attitude, but you always manage to pull something out of your hat. 😂😊
Martyn, I live in hope although it probably doesn't come across very well. I am the sort of person who does a bit of thinking then 'bends' metal and then often thinks 'I should not have gone about it in that way'. LOL
Good luck, and it's a good-looking build thus far..
Many thanks for the compliment. To my eye the loco currently looks a bit of a shambles. I will never win any prizes for my builds. LOL
Wow Ed that looks amazing, thoroughly enjoyed the video, the boiler build looks very professional. I'm sure there's an 0-8-4 tank out there for the narrow gauge I'll try and dig out a picture.
Thanks Graham. Can't put my hand on it, but I have a book somewhere that shows a similar loco albeit if I remember correctly a main line gauge. Something to do with Welsh coal mining possibly.
I love freelance locos like this, even better when it's a beefy tank loco - Three cylinders, what a sound!
Best of luck on testing the new boiler, it looks incredible, and ought to get more surface area. What gauge is this? 45mm?
yup it is 45mm. Sadly as we also in process of buying and moving house it may take me a while to make meaningful progress. Have to see how it goes. Many thanks for your interest.
Ed
I love the rolling track! Can you adapt it so you can find the max speed? Did the smoke box blow off? Did the boiler hold under pressure? I need answers dad 😂
Rolling road will adapt to any speed, but as u approach speed of light the loco may need to be strapped to the bench! LOL. Smoke box should not 'blow off' unless some extraordinary circustance arises such as the entire boiler explodes. LOL. By design a smoke box should be operating at less than atmospheric pressure in order to 'draw' the fire. Yet to test the boiler under pressure. xx
Yeah rolling railroad is cool
When you tested it, it looked like the right cylinder was leaking or some place near it, my friend. Have you pressure tested it to the cylinders.
Well spotted. I believe I have now addressed that leak, but time will tell as they say. I have to get around to testing the boiler cos if that has a problem then little else will matter. LOL
ive found notching up the vaulve gear stops the engine rushong away woth the steam it will chuff away mile onmile ttfn&ty
Quite right, but I have not got to that stage of testing/running this loco. I don't think I have the valve gear totally properly set, but as I got the loco to run I have decided to leave fine tuning for later on.
Stop setting fire to things 😂
Only when the burns hurt too much. The one on my hand has almost healed. LOL
Lol 😂