WELCOME TO THE WORLD OF REALISTIC

MOTION CONTROL

We have developed a range of control valves and accessories to make any retract system work in a realistic manner.

All our valves feature EXHAUST ONLY SPEED CONTROL to ensure smooth and repeatable retraction cycles.  The speeds of all functions are adjusted with built in needle valves and are totally independent.  An added feature is that whatever speed you select it will remain constant from the minimum to the maximum operating pressure of your particular system.

U.P.1 ADJUSTABLE SPEED CONTROL VALVE

This valve will work with any make and size of retract system that uses air for both the up and down movements.                                                                                                                                                                                           £21.00

Specification

                Dual speed control                                                                                   3 - 10 seconds recommended

                Single air inlet                                                                                          30 - 120 pounds

                four outlets for legs

                Standard servo actuation                                                                          0.3 inches travel

                Size                                                                                                          1.2 x .75 x .375 inches

                Weight                                                                                                     .75 oz.

U.P.2 RETRACT AND DOOR CONTROL VALVE FOR P51 MUSTANGS

This valve features automatic door control and exhaust only speed control, not only for the struts but also for the opening and closing of the doors.  This valve does NOT require a special servo, any standard servo can be used.  This is because the automatic sequencing is built into the valve.                                                                                                                                                          £53.00

Specification

                Single speed control for leg                                                                      3 - 10 seconds recommended

                Dual speed control for doors                                                                    0.5 - 3 seconds recommended

                Single air inlet                                                                                          30 - 200 pounds

                Four outlets for legs

                Four outlets for door cylinders

                Standard servo actuation                                                                          0.3 inches travel.  Slow servo not required.

                Size                                                                                                          1.94 x 1.18 x .62 inches

                Weight                                                                                                     2.3 oz.

 Sequence of operation

                Strut in the up position:                                                                           Strut in the down position:

                Down selected:                                                                                         Up selected:

                  Servo moves spool                                                                                   Servo moves spool

                  Door opens                                                                                              Door open

                  Retract lowers                                                                                          Leg raises

                  Leg locked down                                                                                      Leg locked up

                  Door closes                                                                                              Door closes

U.P.3 RETRACT AND DOOR CONTROL VALVE FOR P47

This valve is similar to the U.P.2; the difference being that the doors stay open when the struts are in the down position.                                                                                                                                                £53.00

Specification

                Dual speed control for legs                                                                       3 - 10 seconds recommended

                Dual speed control for doors                                                                    0.5 - 3 seconds recommended

                Single air inlet                                                                                          30 - 200 pounds

                Four outlets for legs

                Four outlets for door cylinders

                Standard servo actuation                                                                          0.3 inches travel. Slow servo not required.

                Size                                                                                                          1.94 x 1.25 x .62 inches

                Weight                                                                                                     2.4 oz.

Sequence of operation

                Strut in the up position                                                                            Strut in the down position

                Down selected:                                                                                         Up selected:

                  Servo moves spool                                                                                   Servo moves spool

                  Door opens                                                                                              Leg raises

                  Retract lowers                                                                                          Leg locked up

                  Leg locked down                                                                                      Door closes

                  Door stays open

U.P.4 SECONDARY DOOR CONTROL VALVE

For use with the U.P.2 valve to provide control of secondary doors which need to stay open when the gear is down even though the main doors are shut; such as the tail wheel doors on Mustangs and strut doors on the B25.

                                                                                                                                                                                £32.00

Specifications

                Requires NO mechanical link, just airlines

                Dual speed control for doors                                                                    0.5 - 3 seconds recommended

                Single air inlet                                                                                          30 - 200 pounds

                Four outlets for door cylinders

                Size                                                                                                          1.94 x .8 x .62 inches

                Weight                                                                                                     1.52 oz.

Sequence of operation

                Strut in the up position                                                                            Strut in the down position

                Down selected:                                                                                         Up selected:

                  Servo moves spool on U.P.2                                                                    Servo moves spool on U.P.2

                  Door opens                                                                                              Leg raises

                  Retract lowers                                                                                          Leg locked up

                  Leg locked down                                                                                      Secondary door closes

                  Secondary door stays open

U.P.5 SPRING AIR CONTROL VALVE

For use with spring air systems where air is used to raise the struts, and a spring is used to lower.  This valve will control the direction of movement and provide truly independent and adjustable speed control of the up and down speeds.                                                                                                                                 £21.00

Specification

                Dual speed control for legs                                                                       3 - 10 seconds recommended

                Single air inlet                                                                                          30 - 200 pounds

                Two outlets for legs

                Standard servo actuation                                                                          0.3 inches travel

                Size                                                                                                          1.4 x .75 x .375 inches

                Weight                                                                                                     .8 oz.

U.P.6 VARIABLE PRESSURE BRAKE CONTROL VALVE

This valve has been designed to control the air pressure to your brake system.  The pressure being proportional to servo travel.                                                                                                                              £36.00

Specification

                Input pressure                                                                                          200 psi

                Output pressure                                                                                        0 - 100 psi proportional to servo travel

                Main housing size                                                                                     1.50 x .85 x .375 inches

                Weight                                                                                                     .9 oz.

                Servo travel                                                                                             .53 inches

                Servo force for maximum pressure                                                           4.5 pounds (26 oz./inch servo with output

                                                                                                                                  hole .3 inch from center)

CUSTOM ENGINEERING SERVICE

If you need a custom retract, cylinder or any other engineering services, please contact us for your personal quotation.  Whether 12 pound jets or 160 pound monsters, we would be pleased to help solve your engineering problems.  We have 35 years experience in the radio control industry.  No job is too big or too small.

ULTRA PRECISION TECHNICAL SERVICES LIMITED

1244 Honeysuckle Crescent

Oakville, Ontario

Canada  L6H 2S8

Telephone/Fax:  (905) 842-1703

E-mail:  Ultra.Precision@Sympatico.Ca