"Dribbler" loco

[WAusten]

Thanks I'm not in a big hurry because I have been making parts from pictures on the web. My biggest thing is the port holes for the piston and the pressure relief valve.

Thanks

 

[MIKE4444]

Hi here is a few pics of my DRIBBLER, the GREEN CABIN is just a prototype cabin will make the original of Copper always do prototypes as copper is scarce and expensive Hoping to finish in a couple of weeks , will use fire lighters and the trays will also be made of Copper,
Many thanks to JOHN for all the help , still need some drawings of the Valves and connection Am using , 4mm Copper tube
Will send more pics later on
many thanks John
MIKE
P/S Any members in Brisbane, AUSI, ?..

 

[johnmcc69]

Mike, it all looks fantastic! nice work!
The plans for the valves are in what I posted, drawings #900 & #950. (I think...)

John

 

[rickhann]

Hi here is a few pics of my DRIBBLER, the GREEN CABIN is just a prototype cabin will make the original of Copper always do prototypes as copper is scarce and expensive Hoping to finish in a couple of weeks , will use fire lighters and the trays will also be made of Copper,
Many thanks to JOHN for all the help , still need some drawings of the Valves and connection Am using , 4mm Copper tube
Will send more pics later on
many thanks John
MIKE
P/S Any members in Brisbane, AUSI, ?..

Mike, I think you will have trouble making enough steam in such a small boiler if the wall thickness is 4mm copper, unless you have a lot of heat. I had that problem when I built my "Dickens". I used a fairly heavy walled brass tube for the boiler and it would not raise enough steam with alcohol burner as shown in the plans. I seem to recall LBSC recommending thin wall tubing for small boilers such as these.

 

[TinkerJim]

Mike, I think you will have trouble making enough steam in such a small boiler if the wall thickness is 4mm copper, unless you have a lot of heat. I had that problem when I built my "Dickens". I used a fairly heavy walled brass tube for the boiler and it would not raise enough steam with alcohol burner as shown in the plans. I seem to recall LBSC recommending thin wall tubing for small boilers such as these.

The plans for 'Dickens' call for a wall thickness of .035" (i.e. under 1mm) for the boiler shell. The working pressure is only 10 or 15 psi, so this is plenty strong enough. (I hydro tested my boiler to 60 psi anyway). There was no trouble raising enough steam - in fact I often used only one of the two burners to keep the engine speed reasonable when not pulling any cars.

 

[MIKE4444]

Mike, it all looks fantastic! nice work!
The plans for the valves are in what I posted, drawings #900 & #950. (I think...)

John

..
JOHN Hi please can you send the info on the valves as i am unable to down load or open the info on the 900 * 950 mane send to my email.
[email protected]
many thanks
MIKE

 

[MIKE4444]

JOHN Hi many thanks received email with info
thanks
MIKE

 

[MIKE4444]

The plans for 'Dickens' call for a wall thickness of .035" (i.e. under 1mm) for the boiler shell. The working pressure is only 10 or 15 psi, so this is plenty strong enough. (I hydro tested my boiler to 60 psi anyway). There was no trouble raising enough steam - in fact I often used only one of the two burners to keep the engine speed reasonable when not pulling any cars.

TINKER JIM, Hi my boiler is 50 mm dia and , 95 mm long , Copper . will try out the 4mm tube first then change later on, if need be, many thanks
MIKE

 

[WAusten]

Tinker Jim,
Thanks for the plans they will be a big help.
I got my Dickens to a roller finally.
Still have a bunch of work to do but I'm having a ball finally finishing it.
Warren

 

[MIKE4444]

Hi well done , look forward to the finished engine , MIKE

 

[WAusten]

Just an update on my progress as you can see I fixed the oversize hole in the spectacle plate with a bushing and custom acorn nut. the 3/32 holes in the rear wheels were not close to size so I taped them and made a threaded post with a shoulder to make sure that it stayed square.

Thanks

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