Re: Faux firebox (now firebox Facts!)
Keith Taylor wrote: Royce, If you go back through my original posting, you will see that the door on the side is the cinder clean out. I think that I blinked while reading your post and missed that comment. But you're right. It's there in black and white. My bad. royce
Re: Faux firebox (now firebox Facts!)
- Original Message - From: "Geoff Spenceley" <[EMAIL PROTECTED]> > >Thanks Keith (as always!). O.S 3/4" Britannia also has side doors > >to remove the ashes. (I haven't made the dampers for the Maisie > >yet! - -but your drawing is still on the desk top) Hi Geoff, I bet my pile of unbuilt project drawings is deeper than your pile! But...so long as we are having fun, then the hobby is doing what it is supposed to be doing! Keith
Re: Faux firebox (now firebox Facts!)
Thanks Keith (as always!). O.S 3/4" Britannia also has side doors to remove the ashes. (I haven't made the dampers for the Maisie yet! - -but your drawing is still on the desk top) Geoff Royce, If you go back through my original posting, you will see that the door on the side is the cinder clean out. The dampers are the doors on the front and back of the ash pan. The only time the side door is opened, is to remove the accumulated ash, and any small clinkers that made it through the grates. Large clinkers can also be removed there, but only by dumping the "drop grate" and pushing the large clinker off of the rocking grates, onto the hinger drop grate. The side door is not used for firing control. Keith - Original Message - From: "Royce" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" Sent: Tuesday, March 29, 2005 10:27 PM Subject: Re: Faux firebox (now firebox Facts!) Keith Taylor wrote: > > The "doors" you mention are located at the front and rear of the ash > pan, and are called "dampers" and they control where the air enters the > fire, and how much. Hi Keith. You know, I just re-visited Vance's photo and it appears that there is a hinged thingy on the side of the firebox as opposed to the front or back. Am I mis-reading the photo ? royce
Re: Faux firebox (now firebox Facts!)
Royce, If you go back through my original posting, you will see that the door on the side is the cinder clean out. The dampers are the doors on the front and back of the ash pan. The only time the side door is opened, is to remove the accumulated ash, and any small clinkers that made it through the grates. Large clinkers can also be removed there, but only by dumping the "drop grate" and pushing the large clinker off of the rocking grates, onto the hinger drop grate. The side door is not used for firing control. Keith - Original Message - From: "Royce" <[EMAIL PROTECTED]> To: "Multiple recipients of sslivesteam" Sent: Tuesday, March 29, 2005 10:27 PM Subject: Re: Faux firebox (now firebox Facts!) > > > Keith Taylor wrote: > > > > The "doors" you mention are located at the front and rear of the ash > > pan, and are called "dampers" and they control where the air enters the > > fire, and how much. > > Hi Keith. You know, I just re-visited Vance's photo and it appears that > there is a hinged thingy on the side of the firebox as opposed to the > front or back. Am I mis-reading the photo ? > > royce >
Re: Faux firebox (now firebox Facts!)
Keith Taylor wrote: The "doors" you mention are located at the front and rear of the ash pan, and are called "dampers" and they control where the air enters the fire, and how much. Hi Keith. You know, I just re-visited Vance's photo and it appears that there is a hinged thingy on the side of the firebox as opposed to the front or back. Am I mis-reading the photo ? royce
Re: Faux firebox (now firebox Facts!)
Hi Keith. Thanks for the info. It always amazes me how much knowledge is in this group. And how much skill it takes to actually drive a steam locomotive. Don't imagine there's alot of "kick back" time like I'm sure there is driving a diesel. They took all the fun out of it ! royce in SB Keith Taylor wrote: Hello Royce. You wrote: My supposition is that you should see the bottom of the firebox down to the mudring and then "something" related to the fire - maybe called the "ashpan" ? The photos that I've seen seem to have "doors" on them controlled by a rod. This is the part I don't understand. The "doors" you mention are located at the front and rear of the ash pan, and are called "dampers" and they control where the air enters the fire, and how much. When you are running forward, with a coal fired locomotive, you want the bulk of the air entering the fire to come from the rear, as air entering from the front will just take the shortest path up along the front seet of the firebox, and enter the tubes without having supplied oxygen to the coal! And, it has the specific bad effect of chilling the sheet nearest the front and breaking stay bolts and loosening tubes. So, for forward running, you mostly close the front damper, open the rear ones, and force any air entering to come up through the firebed! The farther you open the damper, the higher the amount of air, and hence a higher firing rate! So, lugging a drag of felled trees up a grade, the damper would be wide open. Loafing along drifting, you can close it down and save coal, since you aren't working the boiler very hard. These dampers (the doors) are controlled by rods that extend up in the cab floor, where thefireman can control the opening by lifting the lever and hooking it by a notch in the lever, to the cab floor holding it at whatever position he wants. The door on the side of the ash pan, as shown in Vance's photo, is the clean out, where ash accumulations are removed. If you let the ask get too high, it does two things, once chokes off air supply to the grates, and in some cases where the ash was allowed to actually reach the grates, it kept air from hitting the gratesm and cooling them. With the ash acting as an insulant, the grates can reach the temperature where they will actually melt! So, now you know what the "doors" are, they are firing controls on wood and coal burning locomotives. KeithIn frosty, and still snow covered Maine!
Re: Faux firebox (now firebox Facts!)
Hello Royce. You wrote: > My supposition is that you should see the bottom of the > firebox down to the mudring and then "something" related to the fire - > maybe called the "ashpan" ? The photos that I've seen seem to have > "doors" on them controlled by a rod. This is the part I don't > understand. The "doors" you mention are located at the front and rear of the ash pan, and are called "dampers" and they control where the air enters the fire, and how much. When you are running forward, with a coal fired locomotive, you want the bulk of the air entering the fire to come from the rear, as air entering from the front will just take the shortest path up along the front seet of the firebox, and enter the tubes without having supplied oxygen to the coal! And, it has the specific bad effect of chilling the sheet nearest the front and breaking stay bolts and loosening tubes. So, for forward running, you mostly close the front damper, open the rear ones, and force any air entering to come up through the firebed! The farther you open the damper, the higher the amount of air, and hence a higher firing rate! So, lugging a drag of felled trees up a grade, the damper would be wide open. Loafing along drifting, you can close it down and save coal, since you aren't working the boiler very hard. These dampers (the doors) are controlled by rods that extend up in the cab floor, where thefireman can control the opening by lifting the lever and hooking it by a notch in the lever, to the cab floor holding it at whatever position he wants. The door on the side of the ash pan, as shown in Vance's photo, is the clean out, where ash accumulations are removed. If you let the ask get too high, it does two things, once chokes off air supply to the grates, and in some cases where the ash was allowed to actually reach the grates, it kept air from hitting the gratesm and cooling them. With the ash acting as an insulant, the grates can reach the temperature where they will actually melt! So, now you know what the "doors" are, they are firing controls on wood and coal burning locomotives. KeithIn frosty, and still snow covered Maine!
