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ge_rik wrote: ↑Fri Aug 28, 2020 10:06 pm
I was considering adding a sound module. I have one of those MP3 player cubes to spare. Just need to find the right sounds. If it's open, I might take a trip to the boneworks in Stoke - just need to find out when they're next firing up their engine...
It looks as though he modelled the printed machine on a Stuart beam engine model? I found these videos on YT and it appears that the most noticeable noise is actually just a rythmic knocking. Don't know if you can copy a sound clip and just repeat it?
It also looks as though in practice they seem to run faster than we've been thinking, but that may not necessarily be the case if it was scaled up to real life?
Knob twiddling aside, that's a very good solution Rik. Have you used one of the "12v LED dimmer switches" off ebay? Not bad value for about £2-3 each. I'm currently using 4 in a non railway related project. The last time I built one from a Velleman kit, and it was not that cheap!
Re: Bone Works
Posted: Sat Aug 29, 2020 4:38 pm
by GTB
ge_rik wrote: ↑Fri Aug 28, 2020 8:28 pm
I think the speed is much more appropriate and with the PWM controller can tweak it.
The website for the Etruria Industrial Museum says the engine was built in the 1820s. Marine engines of the period are usually quoted as running at 20 rpm and the much older Whitbread beam engine in the Powerhouse Museum in Sydney is also quoted as running at 20 rpm. Easiest way to visualise that speed is the beam should take 3 secs. to move up and back down again.
As Philipy said, these old beam engines don't make much noise when running. They use a condenser, so there's no exhaust noise and the working pressure and speed is so low that there's little mechanical noise.
As I recall the only noise the one in Sydney makes when in steam is a quiet wheezing noise and there's a click from the valve driving mechanism as it reverses the valve at the end of the stroke.
Regards,
Graeme
Re: Bone Works
Posted: Sat Aug 29, 2020 6:40 pm
by ge_rik
GTB wrote: ↑Sat Aug 29, 2020 4:38 pm
As I recall the only noise the one in Sydney makes when in steam is a quiet wheezing noise and there's a click from the valve driving mechanism as it reverses the valve at the end of the stroke.
I'll just record myself after I've been for a bike ride ......
Rik
Re: Bone Works
Posted: Sat Aug 29, 2020 6:42 pm
by ge_rik
Thanks guys
I really appreciate the effort you've all put in to research the background to this little beam engine. I must admit, I do like the ponderous nature of beam engines - the have a certain majesty .....
Rik
Re: Bone Works
Posted: Sun Aug 30, 2020 9:20 am
by ge_rik
Just discovered a video of the Etruria Bone Mill (on which my model is based) beam engine in steam - see from 2:20 onwards
Rik
Re: Bone Works
Posted: Sun Aug 30, 2020 9:27 am
by philipy
Very good, well spotted Rik.
At least now you know exactly what the speed should be.
I'm thinking that since they do run so quietly, from outside you'd probably not even be aware of the engine, so do you really need to mess about putting sound in?( Other than for " I know it's there." )
philipy wrote: ↑Sun Aug 30, 2020 9:27 am
Very good, well spotted Rik.
At least now you know exactly what the speed should be.
I'm thinking that since they do run so quietly, from outside you'd probably not even be aware of the engine, so do you really need to mess about putting sound in?( Other than for " I know it's there." )
I happen to have a spare MP3 cube so will probably get some of the clanking from the machinery as well as the hiss and clunk of the beam engine and just have it running quietly in the background. I might use a PIR sensor with an Arduino to trigger the sounds only when it detects someone is near. Might give the cat a bit of a scare.....
Rik
Re: Bone Works
Posted: Sun Aug 30, 2020 11:04 am
by Peter Butler
Wonderful video showing the grandeur of these machines in action. They are not noisy in operation, and I am not usually in favour of generated sound in steam, or diesel, locomotives, but thought it might disguise the sound from the motor.
Re: Bone Works
Posted: Sun Aug 30, 2020 2:26 pm
by Lonsdaler
Very surprised to notice a date on the beam of 1917. Would that be a build date, or just the date the component was replaced?
Re: Bone Works
Posted: Sun Aug 30, 2020 9:19 pm
by ge_rik
Lonsdaler wrote: ↑Sun Aug 30, 2020 2:26 pm
Very surprised to notice a date on the beam of 1917. Would that be a build date, or just the date the component was replaced?
According to the blurb on the museum website, the beam engine was built in the 1820s to Watt's patent. No info as to why the beam was replaced in 1917 - presumably it had to be refurbed.
Rik
Re: Bone Works
Posted: Mon Aug 31, 2020 6:22 pm
by ge_rik
While sorting out the beam engine, I finished off the tiling for the rooves and have also been steadily printing out ridge tiles. I needed four different styles of ridge tiles dependent on where they were going to be used.
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Those along the upper two ridges have flanges, ...
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..... while those on the hipped ridges have no flanges and overlap each other.
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As there are two different pitches for the main roof and the engine room roof, the angles needed to be different. It took quite a while to print out and affix the tiles but I'm pleased with the outcome.
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As you can see, the building has been primed and so the next stage will be to use acrylics for the brickwork and tiles.
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Then, of course, I need to find somewhere to store the building during the winter months - it is a bit of a beastie
Rik
Re: Bone Works
Posted: Mon Aug 31, 2020 8:49 pm
by Peter Butler
WOW...... that is impressive, I love the roof detailing, right down to the slipped slates!
A real work of art Rik, the bar has been raised once more!
Re: Bone Works
Posted: Tue Sep 01, 2020 12:37 am
by LNR
Going to look great with the brickwork painted in, big job though. That's one thing about garden railway buildings they can be quite large if they are to represent an imposing structure.
Grant.
Re: Bone Works
Posted: Sun Sep 06, 2020 2:37 pm
by ge_rik
Getting closer!
The main structure is now finished and painted. It needs to be properly bedded-in and I need to finish off some of the detailing - eg guttering, plaque, door handle, fancy finial, etc. I could also do with the plants in the background growing quickly to hide the workshop!
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The beam engine is installed in the engine house, but I need to install lighting so it can be seen!
Rik
Re: Bone Works
Posted: Sun Sep 06, 2020 2:58 pm
by Peter Butler
Absolutely brilliant!!!!!!..... the brickwork looks perfect and the roof shows up the loose slates so well. The engine house is a real cracker. Too much additional detailing might detract from the structure, which is wonderful in its own right.
Re: Bone Works
Posted: Sun Sep 06, 2020 3:41 pm
by philipy
Cracking job, Rik.
Yep, it is a shame not to be able to see the engine.
This is in no way a criticism, but should there be a chimney somewhere?
Re: Bone Works
Posted: Sun Sep 06, 2020 5:43 pm
by ge_rik
philipy wrote: ↑Sun Sep 06, 2020 3:41 pm
Cracking job, Rik.
Yep, it is a shame not to be able to see the engine.
This is in no way a criticism, but should there be a chimney somewhere?
In the building on which this is based, the boiler house and hence the chimney is behind the engine house.
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I've not enough space to model it unless I do it as a backdrop.
Rik
Re: Bone Works
Posted: Sun Sep 06, 2020 5:45 pm
by ge_rik
Peter Butler wrote: ↑Sun Sep 06, 2020 2:58 pm
Absolutely brilliant!!!!!!..... the brickwork looks perfect and the roof shows up the loose slates so well. The engine house is a real cracker. Too much additional detailing might detract from the structure, which is wonderful in its own right.
Thanks Peter
I take that as praise indeed from someone I regard as the master of building construction.