DYNAMAX DUCTED FAN UNIT

The Dynamax ducted fan propulsion system was designed by leading General Electric aerodynamicists and Tom Cook of Jet Model Products. Precision machined parts, the finest carbon fiber plastics and advanced injection molding techniques have made the Dynamax Fan an industry standard. Years of proven performance makes this the obvious choice for ducted fan modelers and is recommended as required equipment by model jet manufacturers around the world.

Engine speeds of 21,000 to 23,000 r.p.m. will deliver upwards of 15 lb. of static thrust with properly designed flow paths. Many models in the 20 lb. weight range have been successfully flown with the Dynamax Fan. When correctly assembled and installed, the modeler can expect years of enjoyment and exciting performance.

Assembled and balanced versions are the only Dynamax fans available. They require only the
installation of the engine, rotor blade and spinner. Click on the “Accessories Button” for additional
system support items.

601	Spinner Screw	1.10	614	Long Stator Screw - 2 req.	ea. 0.32
602	Spinner	10.00	615	Long Stator - 2 req.	ea. 3.00
603	Rotor Bolt	4.00	616	Short Stator - 14 req.	ea. 2.50
604	Rotor Washer	1.00	617	Turbine Body	40.00
605	Rotor Cap Screw - 3 req.	ea. 0.20	618	Engine Mounting Bolts - 4 req.	ea. 0.25
606	Rotor Cap Screw Washer - 3 req.	ea. 0.04	619	6-32 nut-Long Stator - 2 req.	ea. 0.10
607	Rotor Cap	25.00	620	Washer - Long Stator - 2 req.	ea. 0.02
608	Turbine Blade - 11 req.	ea. 8.00	621	Rotor Spacer and Collet	12.25
609	Rotor Hub	22.00	623	Dynamax Instruction Book	2.00
610	Rotor Spacer (specify engine)	9.00	624	Rotor Tightening Wrench	15.00
611	Shroud	35.00		(Not included)
612	Short Stator Screw - 14 req.	ea. 0.30	625	Short Stator Washer-14 req.	ea. .04
613	Shroud Mounting Flange - 2 req.	ea. 8.00

JMP’s rotor wrench is manufactured exclusively for use with the Dynamax ducted fan unit.
Its purpose is to hold the rotor securely while tightening down the front end hardware. This
voids the need to place excessive pressure on the individual rotor blades and stator vanes.

The pressure vent is designed to supply pressure to the fuel system by using air velocity from the spinning fan rotor, rather than tuned pipe pressure. The results are a more linear pressure rise and the venting of excess fuel into the airflow instead of the tuned pipe.

More commonly called the “remote needle valve”, allows for on the fly carburetor adjustments. Just set it, lock it down, and forget it. Double sealed steel needle and steel seat guarantee long-life and steady operation. Possible engine displacements are .25 to 4.0.

NOTE: This application requires a separate servo and additional channel.

We no longer manufacture the System II tuned pipes. However, we do have ample stock of