Jet Engine Plans
Our J-130 &
J-20 Jet Engines are considerably different than the other Jet Engines
United Nuclear deals with.
First of all, they have no moving parts. There is nothing to wear out,
and there is no complicated support equipment such as fuel & oil
pumps or radiators found on turbine engines, or reed valves that wear
out & break found on pulsejet engines.
At the present time, we do not sell completed J-20 or J-130 engines or
parts, but we do sell the plans.
The plans are large 1:1 scale drawings (over 16 feet long for the J-130
and over 8 feet long for the J-20). The engines are fabricated from just
sheet metal and tubing. If you are good at with metalworking &
fabrication (cutting, welding, forming) you can build this engine. The
plans can simply be placed on top of your sheet metal and the parts cut
It is a great metal shop project for the more advanced hobbyist.
The original engine & designs were produced by a close friend of Bob
Lazar's, Eugene Gulhareff. Until his death, Eugene built & sold his
engine for decades and met Bob in the late 1970s. Bob occasionally
worked with Eugene building engines and also sold plans with some minor
modifications he incorporated for Go-Kart & small vehicle use at car
shows and race events.
These plans incorporate the performance changes Bob made back then and
the engines actually put out about 15% more thrust than advertised.
The engines are controlled by a simple ball valve regulating propane
flow to the engine which allows them to throttle from idle (essentially
zero thrust) to 100%. The engine does get red hot during operation so it
cannot be built into an enclosed area unless copious amounts of ventilation
J-130 on a Go-Kart
See the youTube video:
Bob in 1979 with a J-20 on his
Engine Plans: $19.00