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A Gas tank for the
Hornby Rocket Locomotive.
Click here for details.

BIX029
Boiler Pressure Regulator.
Click here for details



Forest Classics, sponsors
of Robert Handcock &
Ken Edwards, at the Isle
of Man TT races.
Congratulations to Rob & Ken for winning 5th place at the 2012 Sidecar event!
Visit RJ Road Racing website
Click here

 

Bohm "Smoking Gun Flame Gulper" - Models HB22 & BHB22

 
  Technical Data:
Base measurement: 200 mm x 130 mm x 160 mm
Base plate material: Beech
Bearings: Four high quality  ball bearings.
Working rpm.: 0 - 800 rpm, regulated to run slowly.
Balance wheel: Diameter 70mm.
Fuel: Spirit
Weight: 2100g
 
   

The Bohm HB22 "Smoking Gun Flame Gulper"
Beech Base.

The Bohm HB22
"Flame Gulper"
with a Beech Base.
Finished Model:
Price: 407.43p

The Bohm HB22
"Flame Gulper" 
with a Beech Base.
In Kit Form
Price: 402.05p

 

The Bohm BHB22 "Smoking Gun Flame Gulper"
Black Base.

The Bohm BHB22
"Flame Gulper"
 with a Black base.
Finished Model:
Price: 407.43p

The Bohm BHB22
"Flame Gulper"
with a Black base.
In Kit Form:
Price: 402.05p

   

Should you wish to construct this fine
Stirling engine yourself, a kit of fully
machined components is available.

Full instructions for assembly
of the Bohm HB22 are provided.

   

Some history and technical details.

A Vacuum motor, also named "Flame Gulper," is a hot-air motor but not a Stirling engine .The principle is quite old. In 1758 Henry Wood already was granted a patent. From the technical point of view it is an atmospheric motor, because the outer air pressure does the work (comparable to the first Ottomotor). The piston sucks the flame into the cylinder through an open valve and heat the air inside.

When the piston goes back the valve closes, the air in the cylinder cools down and the outer, now higher atmospheric pressure presses the piston forward. Therefore the maximum power of the piston is limited to the product of the surface of the piston air pressure.

When the piston reaches the front dead centre, the valve opens again and the cycle starts again. A balance wheel overcomes both dead centres. Used as functioning motors for models, they are often built as stationary motors in horizontal and vertical versions and as single, double or multi-cylinders. They have been used for models of nostalgic tractors and rail vehicles very successfully.

 

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LATEST NEWS.

Ministeam

Atmospheric Engine

Click here for details

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BIX012 Gas Burner Set for the Mamod Steam Wagon

Click here for details

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New Wilesco Stirling Engines
Click
here for details

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New Collectables on

the Used Models page

Click here for details

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Paying by cheque?
It couldn't be easier.

Click here for details

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The Burrell Traction Engine is back!
Click here for details
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Visit our new
Bespoke Models page.

Click here

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NEW!
Two superb
PM Research
Un-machined Kits.
Click here for details.

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NEW!

PM Research Dynamo

Click here for details.

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BIX030 kit

Click here for details.

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