Now attach the two connecting rods (22) to the flywheels with the white bushing (42) and screw M2,5x5TX6 (42).
If they now turn on the flywheel, the connecting rods must not strike and must rotate freely.
Now set the radiator grille (45) forward in front of the engine block and secure it with two screws (40).
Now assemble drive wheels C (11) onto axes 8 + 25 with screws (15). Now assemble drive A (7) with O-belts (10) to axle
(25), keeping some distance (0.5mm) to the seat block. Also place the belt over the small drive wheel (11). Now assemble the
drive wheel (27) and place O-belt B (28) according to the drawing. Now assemble the impeller (29) with 2 ball bearings (30).
Pay attention to the 2 retaining rings (9).
You can now set the car vertically; it supports itself at the rear with the heating cylinder. Secure it there on the side.
Now slide the steering holding piece (37) all the way in on both sides of the front wheel axle (31), then clip it to the inner
retaining rings (9) on the front wheel axle (31), then an impeller on each (29) with two bearings (30) and another retaining ring
(9). Now permanently assemble the connecting rod (43) with sleeves (42) and screws (41) on the respective steering holding
piece (37) on the left in the direction of travel, stay left of the mark on the front axle. Also stay left of the mark on the other side
(offset). This prevents the steering from jamming later. Test the free movement of the connecting rod with the bushing in the
assembled state, it may be necessary to bend the connecting rod slightly near the black part (44).
Turn the straight piece with the 3 slots upwards at part (57) into a gentle wave shape so that it does not go loosely into the
groove, but is somewhat tighter. Now secure the torch holder from below with a screw (40). Turn the edges of the torch holder
so that the torch is secured in the holder, not loose. Finally, loosen the seat block, footboard, engine block and radiator grille
from below (40), then push all these parts together and hold, then fasten all screws (40) (to prevent the displacement axle from
striking in the seat block). Glue the headlight ring (65) to the headlight (62). Fasten the headlight (62) with the spacer (63) and the
screw (64) according to the drawing. Insert two grub screws (53) M3x16 from below. They serve as a limit stop. Then screw the
windscreen (60) with the two screws (61) to the engine block (1).
The driver should enter from the right in the direction of travel; lead the knees laterally under the steering wheel, now turn towards
the seat. Put a small droplet of coloured lacquer or household glue into the threaded hole from above (44), now attach the steering
wheel (48) with screw (49) and tighten. Now the driver is ready to drive the car.
Put the vehicle into operation
WARNING: The car should only be operated under constant supervision by persons over 18 years of age. Easily
flammable objects should not be kept in the vicinity of the demonstration area. Do not touch the seat block, heating
cylinder or the flame area since this could cause burning.
Handle denaturated alcohol carefully. Never leave alcohol bottles open. Inappropriate use of the Sportscar can lead to
fires! NEVER in CHILDREN’S HANDS!!!The legal regulations for open fires apply when operating the device!
Operating instructions
1 – Set up the car in a draught-free place with flat floor/table surface.
2 – Remove the lid of the aluminum burner can and fill up to the marking with 94% denaturated alcohol(fresh fluid!!!).
WARNING: The denaturated alcohol bottle should always be closed again and tidied away:::Danger of explosion:::.
3 – Light the wick. Wick must be out of burner 5mm and be good bushy.
4 – Wait approx. 45 seconds for good heat.
5 – Forcefully crank the flywheel in the direction of driving until the car drives by itself.
• Never leave the car without supervision.
• Rotate flywheel (3) 180° (see line on the circumference) and the car will drive backwards.
Maintenance/ Cleaning
Maintenance:
After one Hour running time clean piston and Cylinder
Read SUPPORT instruction website
http://www.en.boehm- stirling.com/support.html
Oil got on the working piston (56)? (After longer standstill possible):
Please towel the working piston with a lint-free cloth and as well its working piston bush (13).
Never re-apply oil, oil has an adhesive effect and stops the car from moving! The car should be stored in a dust-free environment.
The smallest pollution can stop the motor from functioning. The adjustments are in the H7-area. All mobile mechanical parts should
be free-moving or the motor will not run! Be careful when disassembling – some parts have thicknesses of less than 0,25 mm.
In case of problems visit the following link http://www.boehm-stirling.com/tl_files/stirling-technik.de/images/Antwort%20
Wartungshinweise%20Deutsch.pdf or read yellow Note in the box.
In case of technical questions please contact us at
The propulsion principle of the Stirling motor
The burner heats the air contained in a closed circuit. Due to thermal expansion, the working cylinder and the flywheel are kept in
motion. As the working cylinder moves in direction of the wheels, the displacing cylinder is pushed from the seat block into the
heating cylinder. Since the displacement body has no seal, the hot air is moved past its outer wall into the front part of the seating
block. Since the temperature there is approx. 300°C lower (volume reduction), the cooled air creates a vacuum that sucks the
working cylinder back out and maintains the flywheel’s motion. The rotating movement pulls the displacing cylinder back into the
cooling rib part, allowing for a quick streaming of the cooled air from this chamber into the heating cylinder. The air heats again,
expands and provides work once again.
