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Author Topic: The BAT.  (Read 4890 times)

KBIO

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The BAT.
« on: November 26, 2021, 04:53:44 pm »

Hello !
I've bought this Bat's hull this year and I must admit that I would have prefer to have the drawing and do it myself.
But after a bit of work, she is presentable.
As we talked about it in my previous post : Ami Gaël , I open a new topic here.
we already talked about the steam set to put in it.
I agree with the cATON which is a very (Ol') good engine and it will fit perfectly in it.
For the boiler though, I prefer to build mine.
I shall put photos and explanation later on.
For the time being a quick presentation.



KBIO

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Re: The BAT.
« Reply #1 on: November 26, 2021, 05:00:36 pm »

To answer to the question concerning the difference in size between the old CATON and the MK II , they are substantially identical .
I'll get back with more photos and infos as I'll have some.
Cheers!


KBIO

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Re: The BAT.
« Reply #2 on: November 27, 2021, 04:06:21 pm »

Hello !
First, let's talk about the boiler!
It is 10 cm wide x 12 cm High
It has been designed in order to keep the 6 boiler tubes (32mmx6mm )  in the lower horizontal furnace part .
3 more tubes are in the vertical part and will stay unerneath the water level close to the end.
This is done so to keep steam production as long as possible.
The burner is home made. Notice that there is no secondary air entrance on it. The air supply being around the burner itself.
Just for the fun, the details of the boiler.

KBIO

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Re: The BAT.
« Reply #3 on: November 27, 2021, 04:10:45 pm »

Tomorrow, I show the engine in place. :-))

DBS88

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Re: The BAT.
« Reply #4 on: November 27, 2021, 06:09:48 pm »

Interesting space saving boiler design, I know little about boiler design, so forgive me for asking, does the design have stays, rods that go through the boiler to connect the two end plates?
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KBIO

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Re: The BAT.
« Reply #5 on: November 28, 2021, 04:55:49 pm »

Hello!
Using rods to reinforce the boiler and to avoid deformation of the the two end plates is a good idea. Personally , I do not install any when I use plates that are 2mm thick and less that 4'' diam.
And you can see that after reaching 10b (=147psi) the end is still flat.
Photo 1
On the last boiler I did , I use 1,5 mm thick on the top end. And I had a deformation when reaching 6 b(=90psi)  pressure. So I ended up with my steam valve, whistle valve and safety valve bending like the Pisa tower. It took me some sweats to straighten them , and still , it is not perfect.
Photo 2.


Finally, I installed the CATON inside teh BAT.
All is in place and I should be able to steam her up in the coming days.
My only problem left is to be able to get the steam out without going along the chemney = too many elbows. But I may end up to do so. My first intention is to let the steam escaping through the "Tea pot" ! Not sure that I like it ! :embarrassed:
A few pics to get your recommendations.




KBIO

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Re: The BAT.
« Reply #6 on: November 29, 2021, 05:19:05 pm »

Hello !
Steam test done today.
8°C in my workshop : gas flow is weak and it took 8 min for the boiler to build up pressure to 3 b. Boiler 1/2 full only.
A bit noisy, I think ! But the CATON  works good.
I need to finalize a few details and finish the set up of the shut off valve , protect the Receiver and some more ...! :-)
Hope you enjoy it.
Have a good night!
Regards.
https://youtu.be/WR_6NojYvVI



rhavrane

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Re: The BAT.
« Reply #7 on: November 29, 2021, 05:49:34 pm »

Bonjour Yves,
Beautiful boat indeed and for the gas, you can transform even a Regner gas tank in liquid phase without adding any complcated plumbing, I did it sucessfuly on my speed steam boat : https://www.youtube.com/watch?v=1TdwdAKIFKE&t=334s
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Raphaël
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SteamboatPhil

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Re: The BAT.
« Reply #8 on: November 29, 2021, 07:45:31 pm »

Trés Bon Yves
Chaudière c'est manifique


Phil
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KNO3

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Re: The BAT.
« Reply #9 on: November 30, 2021, 06:49:27 am »

Nice work Yves, the boiler and engine fit the boat well.
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KBIO

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Re: The BAT.
« Reply #10 on: December 03, 2021, 01:33:16 pm »

Hello !
The engine has been hidden during the sailing in order to avoid oil spilling all over the place.
I have'nt paint the servos , as Bunkerbarge does , in this boat as there is a roof , but hidden them too.
Batteries charged , oil in place ! Just need to fill up gas and waiting for the sun to get back for sailing.
Thank you for watching !
Regards
PS; first time I charge such a photo! :embarrassed:

 

derekwarner

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Re: The BAT.
« Reply #11 on: December 03, 2021, 10:37:50 pm »

Always seems a pity to hide a steam engine  :o   >>:-( , when the vessel is on display with the decking & skylights removed  ... Derek
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Engineman

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Re: The BAT.
« Reply #12 on: December 04, 2021, 07:53:19 am »

🙈
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KBIO

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Re: The BAT.
« Reply #13 on: December 04, 2021, 08:39:36 am »

Good morning !
You are absolute right Derek ! The engine is not hidden, it is just covered during the sailing to avoid the oil splash all over.
As the launch has a deck to cover the steam plant, so there is no sin to protect the inside when necessary!.
Don't worry, most of the time , the launch is open, as I also like to make the steam plant visible. That is why I build 90% of the time, open launches!


Concerning the top engine (bleed off pressure or oil injector??) , I am working on it ! I am not sure of the interest having them to oil the engine as it will oil the top part only. Maybe as a bleed off for starting !?? But this engine starts and expels the condensation right away when open the boiler ! So ....  %)
Thanks for your comments!Have a good day.

derekwarner

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Re: The BAT.
« Reply #14 on: December 04, 2021, 10:10:34 am »

My dear KIBO...apologies, I misunderstood  :embarrassed:  ....but I must admit, I thought you were going crazy  %%

As Engineman shows....even opening the engine space skylights shows the delights :kiss: of the engine elements

I am 22,000km away, but do not need to see the antisplash temporary engine cover in a photograph again


Derek
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SteamboatPhil

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Re: The BAT.
« Reply #15 on: December 04, 2021, 07:18:58 pm »


Yves
[/size] [/size]Brilliant work as always, as for the sun......, if you get some sun send it up here. O0
[/size]
[/size][/size]
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KBIO

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Re: The BAT.
« Reply #16 on: December 05, 2021, 08:16:08 am »

Good morning!
Thank you for your encouragements ! I am working out the top elements of the engine , then !
Concerning the sun, Phil! It is so shy this morning that I do not want to make it afraid and having it hidding behind the big black clouds around!
Have a cool good day ! ok2

KBIO

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Re: The BAT.
« Reply #17 on: December 05, 2021, 04:44:40 pm »

Hello !
No sun Phil , and as I felt like pressure on me [size=78%] {-) [/size][size=78%], I've been in my "bouclar" this afternoon. [/size][size=78%] :-) [/size]
Tomorrow , I should be able to finish the painting and bolt the top elements on the box.
Regards.

ps: "bouclar" is an old French slung word for a kind of messy workshop in the back yard.

KBIO

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Re: The BAT.
« Reply #18 on: December 06, 2021, 02:44:29 pm »

Hello!
Top elements in place.
I need to work out the panel with the 3 gauges. I want to avoid to buy real manometers as it will be expensive for such a small panel. If someone has an idea, I would appreciate.
Thanks for watching.

Engineman

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Re: The BAT.
« Reply #19 on: December 06, 2021, 03:54:44 pm »

Fake pressure gauges...it's easy...
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KBIO

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Re: The BAT.
« Reply #20 on: December 06, 2021, 04:13:56 pm »

Thanks Engineman!
You are right, I may end up machining them  . I haver brass this size (+/-)


Print the dial and glue them.
I must have porthole glasses in my drawer , so ....life is beautiful and easy, finally!
Regards.


ps: I love the way you work ! :-))

Bunkerbarge

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Re: The BAT.
« Reply #21 on: December 06, 2021, 04:50:15 pm »

I used porthole glasses for mine and made pipework for the back out of painted up servo wire:







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Circlip

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Re: The BAT.
« Reply #22 on: December 07, 2021, 11:23:20 am »




 Good to see "Old school" techniques rather than "Where can I buy". "Green" servo blends in.


  Regards  Ian.
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KBIO

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Re: The BAT.
« Reply #23 on: December 07, 2021, 04:30:26 pm »

Hello!
Today I tried to make my panel. I am not happy with it and I need to do it again.The welding is not clean, the dials are pale and the glass is not clear!  But at least, I know now how to do.
Back to work during the week. Thanks for sharing your ideas! ok2




KBIO

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Re: The BAT.
« Reply #24 on: December 08, 2021, 03:53:35 pm »

Getting closer , but can be improve still !...
Preparing for the next set ! ok2


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