| View previous topic :: View next topic |
| Author |
Message |
alan2525
Steam Legend!!
Joined: 02 Feb 2008
Posts: 2529
Location: Essex, UK
|
 Posted: Mon Jul 20, 2009 10:35 am Post subject: |
 |
|
Is it possible to shorten the length of the smokebox so that the chimney is central, a few mm machined off the front would help it look a little more like the Bagnall loco it's based on.
_________________
For Custom CNC Engraved Nameplates and Worksplates
http://www.loco-plates.co.uk |
|
| Back to top |
|
 |
IndianaRog
Steam Supreme Being
Joined: 26 Dec 2006
Posts: 9327
Location: Indiana, USA
|
| Posted: Mon Jul 20, 2009 12:08 pm Post subject: |
|
|
Rob, that is some first class work, should be an even nicer jewel when you finish with it.
_________________
Visit IndianaRog and The Temple of Steam: www.indianarog.com |
|
| Back to top |
|
|
alan2525
Steam Legend!!
Joined: 02 Feb 2008
Posts: 2529
Location: Essex, UK
|
| Posted: Mon Jul 20, 2009 1:02 pm Post subject: |
|
|
Just to see how it looks with a shorter smokebox:
_________________
For Custom CNC Engraved Nameplates and Worksplates
http://www.loco-plates.co.uk |
|
| Back to top |
|
|
PCLR
Forum Newbie
Joined: 04 Jun 2009
Posts: 16
Location: buckinghamshire England
|
| Posted: Mon Jul 20, 2009 3:18 pm Post subject: |
|
|
i love that loco i wish Accucraft would bring one like it which is not discontinued
_________________
keeping steam alive if it's a little smaller |
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
| Posted: Mon Jul 20, 2009 3:51 pm Post subject: |
|
|
| johnreid wrote: | | Does the saddle tank heat differently than the side tank? |
i think it would john, but as the water in the tank is pump fed not injector fed, it wont make any difference.
the pump is supposed to be set so it delivers the same amount of water as being used.
_________________
Any man who says he's brave is either an idiot or a liar - Fred Dibnah
 |
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
| Posted: Mon Jul 20, 2009 3:53 pm Post subject: |
|
|
| alan2525 wrote: | Just to see how it looks with a shorter smokebox:
|
i agree alan, it does look better with the shorter smokebox, but that one wont be used on the coal boiler, a hunslet style smokebox will be used, which im not sure of the dimentions and chimney possition.
_________________
Any man who says he's brave is either an idiot or a liar - Fred Dibnah
|
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
| Posted: Mon Jul 20, 2009 4:03 pm Post subject: |
|
|
here is the link to djb's coal edrig page, and it also shows the smokebox i will use, which looks as if it is shorter than the accucraft one and has a central chimney.
i will email djb and ask how much a taller chimney is, i think andy has one.
_________________
Any man who says he's brave is either an idiot or a liar - Fred Dibnah
|
|
| Back to top |
|
|
andysleigh
Steam fanatic
Joined: 07 Apr 2007
Posts: 1018
Location: guildford
|
| Posted: Mon Jul 20, 2009 4:42 pm Post subject: |
|
|
| Rob wrote: | here is the link to djb's coal edrig page, and it also shows the smokebox i will use, which looks as if it is shorter than the accucraft one and has a central chimney.
i will email djb and ask how much a taller chimney is, i think andy has one. |
the smokebox is shorter, but the chimney is not central, the front of the chimney saddle is more or less flush with the front of the smokebox.
_________________
 |
|
| Back to top |
|
|
made-in-england
Steam Legend!!
Joined: 29 Nov 2007
Posts: 2371
Location: Stockbridge,Hants,England
|
| Posted: Mon Jul 20, 2009 5:57 pm Post subject: |
|
|
If you put water in the saddle tank theres a good chance it will get to quite a temperature.
On the Club Sweet Pea, we cant let the water fall very far below the top of the boiler line or else the injectors and pump pack up...
That said, a kettle of hot water over a sticking hand pump works wonders 
_________________
http://www.freewebs.com/willstoysteam/index.htm
http://will15.photobook.org.uk/ |
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
| Posted: Mon Jul 20, 2009 6:12 pm Post subject: |
|
|
we have to get a watering can and cool the injectors down on leonard if the water level gets too low, as they wont pick up the hot water and are mounted directly on the firebox.
the hot water in the saddle on my edrig wont make any differecne i dont think because it will be fed by a bypass pump.
but to cool it down, i will attach a quick release fitting to the clack so i can top up via a squirty bottle when stationary.
_________________
Any man who says he's brave is either an idiot or a liar - Fred Dibnah
|
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
|
| Back to top |
|
|
alan2525
Steam Legend!!
Joined: 02 Feb 2008
Posts: 2529
Location: Essex, UK
|
| Posted: Tue Jul 21, 2009 1:24 pm Post subject: |
|
|
Why do you need a replacement smokebox for use with the coal fired boiler? Is it just that the height of the boiler is different or is it something to do with the configuration of pipework within the smokebox, blower etc?
Can you not modify the current smokebox or fabricate one from a piece of brass tube? The Bagnall would look a lot nicer with a round smokebox rather than the DJB type.
_________________
For Custom CNC Engraved Nameplates and Worksplates
http://www.loco-plates.co.uk |
|
| Back to top |
|
|
kk
Junior Member
Joined: 11 Feb 2009
Posts: 109
Location: Germany
|
| Posted: Tue Jul 21, 2009 2:38 pm Post subject: |
|
|
Hi Alan,
| alan2525 wrote: | Why do you need a replacement smokebox for use with the coal fired boiler? Is it just that the height of the boiler is different or is it something to do with the configuration of pipework within the smokebox, blower etc?
Can you not modify the current smokebox or fabricate one from a piece of brass tube? The Bagnall would look a lot nicer with a round smokebox rather than the DJB type. |
For a coal fired loco the smokebox needs to be airtight to maintain the draught through the fire tubes otherwise the fire will go out.
As both blower and exhaust make use of the venturi effect with the smokebox and chimney air intake from sides other then the fire tubes must be avoided.
_________________
Cheers
Klaus
 |
|
| Back to top |
|
|
Rob
Hero Steamer
Joined: 18 Oct 2007
Posts: 1861
Location: Leicester
|
| Posted: Tue Jul 21, 2009 3:53 pm Post subject: |
|
|
| kk wrote: | Hi Alan,
| alan2525 wrote: | Why do you need a replacement smokebox for use with the coal fired boiler? Is it just that the height of the boiler is different or is it something to do with the configuration of pipework within the smokebox, blower etc?
Can you not modify the current smokebox or fabricate one from a piece of brass tube? The Bagnall would look a lot nicer with a round smokebox rather than the DJB type. |
For a coal fired loco the smokebox needs to be airtight to maintain the draught through the fire tubes otherwise the fire will go out.
As both blower and exhaust make use of the venturi effect with the smokebox and chimney air intake from sides other then the fire tubes must be avoided. |
spot on.
it needs to be airtight, and the accucraft one is just held shut with a clip so would probably pop open on use.
it would be better to use a tume type to look more like a bagnall, but the djb one is for the coal boiler.
_________________
Any man who says he's brave is either an idiot or a liar - Fred Dibnah
|
|
| Back to top |
|
|
alan2525
Steam Legend!!
Joined: 02 Feb 2008
Posts: 2529
Location: Essex, UK
|
| Posted: Tue Jul 21, 2009 6:06 pm Post subject: |
|
|
Does the DJB one have a functional smokebox dart to create an airtight seal then?
_________________
For Custom CNC Engraved Nameplates and Worksplates
http://www.loco-plates.co.uk |
|
| Back to top |
|
|
|
)