Doble Steam Powered Tank

Found this link to a steam powered WWI military tank designed by Abner Doble

[www.landships.freeservers.com]





Edited 1 time(s). Last edit at 10/04/2009 03:46PM by Doug-Ji.

The steam engine to me, am I only one noticing, has some of the same similarities in common with my own.
Except the valve and valve ports are so small.

Hi,,,Is this HOLT any connection to A,O,Lombard [log hauler /track machine ] I think Holt bought license to build Lombards track,,,Lombard was in Waterville Maine,,built track log haulers,,1896-1936,,,yes they are large,,,,and were shipped all over the world,,including Russia,,reference,,Maine built autos ///Richard Fraser,,,,Cheers,,Ben

Good God where do people get this information.
The vehicle itself was built by HOLT. The powerplant was two Doble Detroit engines on a common crankcase, two larger versions of the Doble Detroit water tube boiler.
I have the factory photos of the powerplant; but this web site will not take them, too big.

Jim

Hi Jim

when my photo files are tooooo big to easily post, I take them into microsoft Paint and shrink them to 30%, that gets the file size down to a decent level.



Edited 1 time(s). Last edit at 10/04/2009 03:45PM by Doug-Ji.

Thanks Jim,

Jim sent his pictures to me to upload. I converted them to jpegs, and cleaned the document up a bit.

They appear to be scanned at high resoluton from fine grain film.

Note from Jim, "Here is the file. The tank is the Stanley one, not the Doble-Holt."

Best,
Scott Finegan



Edited 1 time(s). Last edit at 10/04/2009 04:21PM by Scott Finegan.

Doug,

Freeservers free version doesn't allow linking, so your large image doesn't show.

Best,
Scott Finegan

Stanley Steam Powered Tank "America"

[en.wikipedia.org]

According to Wikipedia it was designed to be a mobile flame thrower.

Does anyone know of any video that might exist for either the Stanley or Doble Tank?



Edited 2 time(s). Last edit at 10/05/2009 02:06PM by Doug-Ji.

There are some steam tank video clips that add to interest in this topic. Here are three that caught my attention. The technical specs for the first are not given. The other two are similar technically with the last one working quite well.
[www.youtube.com]
[www.youtube.com]
[www.youtube.com]

Graeme



Edited 1 time(s). Last edit at 10/06/2009 06:55AM by gvagg2.

The videos are so cool, specially first one by film students, the other two I had seen before.
But thought the miniature design, if made full size, be good for full size tractor for muddy fields or log hauling.
I you noticed the little miniature tract tank, ran on less than one bar, this less than 14 psi.

Model steam engines run on very low pressures, give little power and use a lot of fuel by comparison. I have 3 Mamod models and one live steam loco and none give performance worth mentioning apart from the fact they move under steam power.

The Doble tank engine above would have been running around 600 psi. The problems with the large size of low pressure engines was recognized as early as 1820. Check out the size of the engines in the Great Eastern - the largest ship in its period. The paddle wheel engines had a bore of 6'2" and stroke of 14' - engine height was 40' and power was about 1000hp with steam at 15 to 25psi. The ship had steam power or sail but was not an economic success. Boiler construction was a big limitation in the early days. If you do some serious reading you will find high pressure steam and smaller machinery was pretty common over 100 years ago.

Graeme

All files from this thread

File Name	File Size		Posted by	Date
docDBDEtank1917ax.jpg	549.6 KB	open | download	Scott Finegan	10/04/2009	Read message
picDBDEtankENG\'17a.jpg	463.7 KB	open | download	Scott Finegan	10/04/2009	Read message
picDBDEtankENG\'17b.jpg	568.3 KB	open | download	Scott Finegan	10/04/2009	Read message
picDBDEtankENG\'17c.jpg	397.9 KB	open | download	Scott Finegan	10/04/2009	Read message
WWI Steam Tank_Boston.jpg	397.6 KB	open | download	Scott Finegan	10/04/2009	Read message
US steam-powered tankAmerica.jpg	25.4 KB	open | download	Doug-Ji	10/04/2009	Read message