bambuko loco works 0-6-2 (Fowler)
- dewintondave
- Trainee Driver
- Posts: 697
- Joined: Mon Mar 07, 2011 8:52 am
- Location: New Zealand
Re: bambuko loco works 0-6-2 (Fowler)
I had a sheet of 1.6mm and 0.6mm CRS guillotined into handy sizes by my local stockist. I have a lifetime supply . 0.6mm is perfect for bodywork and solders nicely.
Best wishes,
Dave
Dave
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
As I know very well from following your Hunslet build thread.
I also agree with you that there is no point using brass sheet where steel will do perfectly nice
and much cheaper as well.
Weather is still crappy here, so off to the workshop...
I also agree with you that there is no point using brass sheet where steel will do perfectly nice
and much cheaper as well.
Weather is still crappy here, so off to the workshop...
Re: bambuko loco works 0-6-2 (Fowler)
Yes, as you surmise, the only HR I can get in small sheets is in black sheet form.
The HR grade I use is HA1 and it's CA2S-E for the CR. Those are AS/NZS general purpose grades, I've no idea what they'd be called anywhere else.
Some HR grades are available in pickled and oiled form, but I've not found any local supplier that sells it in small quantities.
About all I use HR for is loco frames and since they are flat I usually descale them with a flap wheel sander. That leaves a smooth surface that doesn't rust as fast as the porous surface left by descaling with acid.
Regards,
Graeme
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
Bit more progress.
Hornstays are now fitted:
Next axleboxes...
Hornstays are now fitted:
Next axleboxes...
Re: bambuko loco works 0-6-2 (Fowler)
Wonderful bit of work and great progress.
If at first you don't succeed, use a bigger hammer!
- Hydrostatic Dazza
- Driver
- Posts: 1167
- Joined: Tue Sep 19, 2017 4:17 am
- Location: Brisbane
- Contact:
Re: bambuko loco works 0-6-2 (Fowler)
Super.
We award you Australia's highest award, the Koala stamp.
Keep the pictures coming.
Cheers from Dazza, The Hydrostatic Lubricator
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
I am honouredHydrostatic Dazza wrote: ↑Wed Aug 22, 2018 9:56 pm ...We award you Australia's highest award, the Koala stamp...
Can't wait to get it on it's wheels. Until I know that my suspension/equalisation works, it is just an experiment that might turn out to be training exercise. One thing is for sure - the lessons learned will be worth it for future designs!
- Hydrostatic Dazza
- Driver
- Posts: 1167
- Joined: Tue Sep 19, 2017 4:17 am
- Location: Brisbane
- Contact:
Re: bambuko loco works 0-6-2 (Fowler)
bambuko wrote: ↑Thu Aug 23, 2018 10:49 amI am honouredHydrostatic Dazza wrote: ↑Wed Aug 22, 2018 9:56 pm ...We award you Australia's highest award, the Koala stamp...
Can't wait to get it on it's wheels. Until I know that my suspension/equalisation works, it is just an experiment that might turn out to be training exercise. One thing is for sure - the lessons learned will be worth it for future designs!
If it does not work, and there is no reason why it will not, one will just have to lock it all up and then it becomes cosmetic. No matter what, it will look cool.
Cheers from Dazza, The Hydrostatic Lubricator
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
Not much progress in the workshop.
I am spending most of the time at the moment finishing CAD design, particularly valve gear.
In the meantime, here is a test of screencast from CAD for your amusement:
https://screencast.autodesk.com/Embed/T ... 78?t=0m00s
Entertainment value aside , clearances are tight and it helps to check everything before cutting metal
I am spending most of the time at the moment finishing CAD design, particularly valve gear.
In the meantime, here is a test of screencast from CAD for your amusement:
https://screencast.autodesk.com/Embed/T ... 78?t=0m00s
Entertainment value aside , clearances are tight and it helps to check everything before cutting metal
- tom_tom_go
- Driver
- Posts: 4824
- Joined: Wed Feb 23, 2011 3:08 am
- Location: Kent, UK
- Contact:
Re: bambuko loco works 0-6-2 (Fowler)
That's a great way to go about designing a loco.
It must be rewarding seeing it all work in CAD knowing all the measurements and tolerances are correct.
It must be rewarding seeing it all work in CAD knowing all the measurements and tolerances are correct.
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
Yes indeed ttg,
but CAD is cruel mistress as well - it doesn't tolerate "near enough"
What is taking all this time, is that I am not "modelling" in CAD, I am designing in "CAD",
so... if there was an existing design on paper, it would take no time to create the model (assuming that paper design "added up" in the first place - a lot of them don't )
Because I am designing "my own", often I end up, in some direction, only to find that something interferes or doesn't work for practical reasons,
so back one goes and things get re-arranged (only to find another problem... )
All great fun
but CAD is cruel mistress as well - it doesn't tolerate "near enough"
What is taking all this time, is that I am not "modelling" in CAD, I am designing in "CAD",
so... if there was an existing design on paper, it would take no time to create the model (assuming that paper design "added up" in the first place - a lot of them don't )
Because I am designing "my own", often I end up, in some direction, only to find that something interferes or doesn't work for practical reasons,
so back one goes and things get re-arranged (only to find another problem... )
All great fun
- Hydrostatic Dazza
- Driver
- Posts: 1167
- Joined: Tue Sep 19, 2017 4:17 am
- Location: Brisbane
- Contact:
Re: bambuko loco works 0-6-2 (Fowler)
bambuko wrote: ↑Sun Sep 16, 2018 1:21 pm Yes indeed ttg,
but CAD is cruel mistress as well - it doesn't tolerate "near enough"
What is taking all this time, is that I am not "modelling" in CAD, I am designing in "CAD",
so... if there was an existing design on paper, it would take no time to create the model (assuming that paper design "added up" in the first place - a lot of them don't )
Because I am designing "my own", often I end up, in some direction, only to find that something interferes or doesn't work for practical reasons,
so back one goes and things get re-arranged (only to find another problem... )
All great fun
Hear Hear
Cheers from Dazza, The Hydrostatic Lubricator
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
At long last... bit of an update.
As mentioned before I wasn't all that happy with the first attempt.
My brazing was dodgy, frame ended up a bit wonky and having real thing in front of me (rather than CAD image) made me change some of my ideas.
So everything you've seen so far ended up in a scrap bin and I started again.
This time I have used SIFBRONZE No101 (instead of No1) - added managanese makes it flow better, especially in the kind of joints I am using.
I have also decided not to braze all frame stretchers, only brazing front and rear buffer beams (as per original LBSC advice).
This is the result:
All the stretchers are secured with bolts.
I have decided to move to metric - selection available from https://ghw-modellbau.de was just what I wanted.
I have used mostly 1.4mm 2mm hex bolts and some 1.6mm 2.5mm hex.
The only possible problem going forward is the exchange rate...
Next was the new smokebox design, to allow coal firing.
Here I am making bottom part of the somekobox, which will fit between the frames:
and here it is ready for fitting of the top/proper smokebox:
and viewed from the bottom:
it's all fabricated/brazed from sheet and than milled to size to fit tightly in between the frames.
Bottom will eventually be closed to make it into airtight box.
Smokebox proper is another fabrication from steel:
Front door and chimney to follow...
In the meantime, that's how the whole caboodle looks like:
TBC
As mentioned before I wasn't all that happy with the first attempt.
My brazing was dodgy, frame ended up a bit wonky and having real thing in front of me (rather than CAD image) made me change some of my ideas.
So everything you've seen so far ended up in a scrap bin and I started again.
This time I have used SIFBRONZE No101 (instead of No1) - added managanese makes it flow better, especially in the kind of joints I am using.
I have also decided not to braze all frame stretchers, only brazing front and rear buffer beams (as per original LBSC advice).
This is the result:
All the stretchers are secured with bolts.
I have decided to move to metric - selection available from https://ghw-modellbau.de was just what I wanted.
I have used mostly 1.4mm 2mm hex bolts and some 1.6mm 2.5mm hex.
The only possible problem going forward is the exchange rate...
Next was the new smokebox design, to allow coal firing.
Here I am making bottom part of the somekobox, which will fit between the frames:
and here it is ready for fitting of the top/proper smokebox:
and viewed from the bottom:
it's all fabricated/brazed from sheet and than milled to size to fit tightly in between the frames.
Bottom will eventually be closed to make it into airtight box.
Smokebox proper is another fabrication from steel:
Front door and chimney to follow...
In the meantime, that's how the whole caboodle looks like:
TBC
- Hydrostatic Dazza
- Driver
- Posts: 1167
- Joined: Tue Sep 19, 2017 4:17 am
- Location: Brisbane
- Contact:
Re: bambuko loco works 0-6-2 (Fowler)
I have been pondering the fabrication of my smoke box, you have given me some leads and ideas.
I reckon I will use silver brazing (56% Harris, I use it daily in my work) for my fabrications.
I reckon I will use silver brazing (56% Harris, I use it daily in my work) for my fabrications.
Last edited by Hydrostatic Dazza on Wed Dec 19, 2018 8:18 pm, edited 1 time in total.
Cheers from Dazza, The Hydrostatic Lubricator
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
The chances of finding out what’s really going on in the universe are so remote, the only thing to do is hang the sense of it and keep yourself occupied. Douglas Adams
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
Smokebox assembly temporarily test fitted to the frame:
and from below, showing bottom closing plate fitted as well:
and with all the frame stretchers in place:
In this view, you can see the two temporary bolts/nuts securing smokebox to the frames (eventually they will be replaced by bolts securing cylinders).
Above them two (larger) holes for steam and exhaust piping:
Also the brass angle for securing/supporting cab floor.
The two CSK slot screws between front and middle axle will be (eventually) hidden behind motion bracket.
Another view from below:
and from below, showing bottom closing plate fitted as well:
and with all the frame stretchers in place:
In this view, you can see the two temporary bolts/nuts securing smokebox to the frames (eventually they will be replaced by bolts securing cylinders).
Above them two (larger) holes for steam and exhaust piping:
Also the brass angle for securing/supporting cab floor.
The two CSK slot screws between front and middle axle will be (eventually) hidden behind motion bracket.
Another view from below:
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
Not an attempt to teach grandmother to suck eggsHydrostatic Dazza wrote: ↑Wed Dec 19, 2018 8:15 pm ... I reckon I will use silver brazing (56% Harris, I use it daily in my work) for my fabrications.
The two reasons I am persisting with Sifbronze are:
cost - silver solder is so ***** expensive (so where I can get away without using silver solder I will not use it)
and because I can braze in two or three stages without the whole thing falling apart (I haven't used any screws to hold bits together before brazing).
Re: bambuko loco works 0-6-2 (Fowler)
Nice bit of brazing there and some very nice machine work also.
Shame you had to throw the first attempt away. Did you salvage any of it. You put a lot of very good time and effort into it.....
Shame you had to throw the first attempt away. Did you salvage any of it. You put a lot of very good time and effort into it.....
ROD
Life is so easy when I run my trains.
https://gardenrails.org/forum/viewtopic ... 41&t=11364
https://www.youtube.com/@fairywoodlightrailway
Life is so easy when I run my trains.
https://gardenrails.org/forum/viewtopic ... 41&t=11364
https://www.youtube.com/@fairywoodlightrailway
- bambuko
- Trainee Fireman
- Posts: 212
- Joined: Tue Dec 12, 2017 12:11 am
- Location: UK, England, North Devon
Re: bambuko loco works 0-6-2 (Fowler)
I would call it tolerable rather than nice
need to practice more
No didn't salvage anything....Shame you had to throw the first attempt away. Did you salvage any of it. You put a lot of very good time and effort into it....
Job worth doing is worth doing well, so no regrets
- dewintondave
- Trainee Driver
- Posts: 697
- Joined: Mon Mar 07, 2011 8:52 am
- Location: New Zealand
Who is online
Users browsing this forum: No registered users and 15 guests