Wilesco Steam engine D21

The D21 steam engine is a power machine featuring a double-acting, stationary brass cylinder. The technical specifications match those of the D20, but the special color scheme stands out, giving this machine a particularly elegant finish: all metal parts are painted in black and red. The flywheel is also painted red. This unique machine is complemented by highly polished premium brass components. A technical highlight is the built-in feed water pump, which is exclusively found in the D21 steam engine within the Wilesco range.

This water pump allows for refilling the boiler with water during the operation of the steam engine. The condensate is directed into a condensate tray beneath the chimney, causing the chimney to emit steam. The steam outlet can be manually regulated on the D21 using a steam shut-off valve. The power machine is powered by the dry fuel Witabs, with one load providing approximately 10-15 minutes of steam fun. From the first ignition of the steam engine, it takes about 5 minutes for sufficient steam pressure to build up before the machine can be set in motion. The D21 then has enough power to drive several models, allowing for a clear demonstration of the conversion of heat into mechanical energy. It is particularly enjoyable to generate electricity and light by connecting the separately available parts Dynamo M66 or Dynamo with Lantern M66/2 to the D21.