tinyvdboom
New Member
- Joined
- Jun 1, 2013
- Messages
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- Reaction score
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Hello, I'm
Tiny van den Boom, 57 years old and really keen on building Stirling
engines and flame eaters since 2009.
I've named
this Stirling engine with 8 tumblers 'Spider'
because it looks like a giant spider when you're looking at it. This engine is
an own design, based on earlier models I've made. I've translated the
corresponding principles of operation into an own 4-cilinder Stirling
engine. Some of the parts are made on the basis of Jan Ridder's drawings. The
challenge for me was to design and build a Stirling
engine myself which should be working with 4 heat- and working cylinders. These
8 cylinders in total would be balanced by means of a large camshaft which would
translate the rotation to a flywheel through a belt. The whole machine is built
using a conventional milling machine and a conventional lathe.
The heat
cylinders and displacers are made of so-called Pirex glass so the operation of
the cylinder can be seen easily. This Pirex glass also takes care for the
preservation of the heat when the flame is extinguished. To use the heat of the
flame as efficient as possible I've also made wind glasses, which centralizes
the heat below the Pirex glass. These wind glasses make it possible to use the Stirling engine outside too. For a correct height
adjustment of the focal point of the flame I've made the burners adjustable.
This also makes it easy to position the wind glasses after the wicks are lit.
By placing
the tumblers at such a height I have managed to limit the friction between the
rods and camshaft to a minimum because the rotation between rod and tumbler
remained small. In addition, these rods have sufficient length so an optimal
alignment could be generated. To let the engine run as smooth as possible, I
put ball bearings in the most important pivot points, including the tumblers.
The air
movement from heat- to working cylinder flows through a pipe outside the
mounting plate for the purpose of manufacturability. Additionally, this gives
the product an extra technical look. By means of a valve between the heat- and
working cylinder, the pressure can be regulated so the RPM of the flywheel is
adjustable. It's also possible to drive something with this Stirling
engine by means of a pulley I've made on the axis of the flywheel.
If there are
interested people for the (approx. 35) drawings of this Stirling
engine, do not hesitate to send me an email. The drawings are available for a
fee. My email address is: [email protected]
Some more
specs:
Amount of
production hours: 250 hrsAmount of
o-rings: 32
Total
amount of parts: 508
Max RPM:
700
Bore x
stroke working cylinder: 10 x 20 mm
Dimensions:
215 x 275 x 270 mm
Used
materials: Aluminum, brass, bronze, Pirex-glass, copper, Corian and stainless
steel.
Tiny van den Boom, 57 years old and really keen on building Stirling
engines and flame eaters since 2009.
I've named
this Stirling engine with 8 tumblers 'Spider'
because it looks like a giant spider when you're looking at it. This engine is
an own design, based on earlier models I've made. I've translated the
corresponding principles of operation into an own 4-cilinder Stirling
engine. Some of the parts are made on the basis of Jan Ridder's drawings. The
challenge for me was to design and build a Stirling
engine myself which should be working with 4 heat- and working cylinders. These
8 cylinders in total would be balanced by means of a large camshaft which would
translate the rotation to a flywheel through a belt. The whole machine is built
using a conventional milling machine and a conventional lathe.
The heat
cylinders and displacers are made of so-called Pirex glass so the operation of
the cylinder can be seen easily. This Pirex glass also takes care for the
preservation of the heat when the flame is extinguished. To use the heat of the
flame as efficient as possible I've also made wind glasses, which centralizes
the heat below the Pirex glass. These wind glasses make it possible to use the Stirling engine outside too. For a correct height
adjustment of the focal point of the flame I've made the burners adjustable.
This also makes it easy to position the wind glasses after the wicks are lit.
By placing
the tumblers at such a height I have managed to limit the friction between the
rods and camshaft to a minimum because the rotation between rod and tumbler
remained small. In addition, these rods have sufficient length so an optimal
alignment could be generated. To let the engine run as smooth as possible, I
put ball bearings in the most important pivot points, including the tumblers.
The air
movement from heat- to working cylinder flows through a pipe outside the
mounting plate for the purpose of manufacturability. Additionally, this gives
the product an extra technical look. By means of a valve between the heat- and
working cylinder, the pressure can be regulated so the RPM of the flywheel is
adjustable. It's also possible to drive something with this Stirling
engine by means of a pulley I've made on the axis of the flywheel.
If there are
interested people for the (approx. 35) drawings of this Stirling
engine, do not hesitate to send me an email. The drawings are available for a
fee. My email address is: [email protected]
Some more
specs:
Amount of
production hours: 250 hrsAmount of
o-rings: 32
Total
amount of parts: 508
Max RPM:
700
Bore x
stroke working cylinder: 10 x 20 mm
Dimensions:
215 x 275 x 270 mm
Used
materials: Aluminum, brass, bronze, Pirex-glass, copper, Corian and stainless
steel.
