TruSpeed MT II Analogue Mosfet PWM Dual Polarity Controller

TruSpeed MT II Analogue Mosfet PWM Controller.

Three simple adjustable controls for Acceleration, Sensitivity and Brakes on the MT II make it easy to use and quick to adapt to your racing style, car, and track conditions.

Pulse Width Modulation (PWM) drive controller with unique Transistor braking.

TruSpeed MT II Analogue Mosfet PWM Dual Polarity Controller for both positive and negative wired tracks.
Current rating is not suitable for G12 motors or above with metal chassis racing.

Features and Operating Guide:

• For POSITIVE and Negetive wired tracks
• Sensitivity adjustment
• Brake adjustment
• Acceleration control
• Supplied with the V.10 Contact Board with multiple mode options.
• Set to Positive and Negative Curve mode as standard.
• 36 step wiper element and 9 point contact Stainless Steel Wipers.
• PWM Drive and Brake Control
• Switchable Power Coasting Feature allowing simulated Braking for cars that stop quickly even with no brakes applied.
• Trigger return spring tension adjustment
• User-Changeable Single and Double Finger Trigger
• Fuse for over-current protection
• LED (Power ON and goes off to show full power delivered to your car)
• Comes with 1m of cable fitted

User Guide and Full Features:

MT II Operation Guide (PDF)

MT II Quick Start Guide (PDF)

Brake Control:

Turn Clockwise to increase Braking.

Full braking is the same as a short circuit switch for very strong brakes.

In NORMAL and COAST mode a single rotary control sets the brake strength from full to a gentle action.

If the Brake control is turned all the way anti-clockwise for minimum brakes, but the car still stops too quickly (for example, a high magnet-force HO car, or car that slows rapidly even with no brakes), then the Coast mode can be selected. (Details in the next section)

The COAST and NORM select switch is located on the rear fascia under the LAUNCH button. (The switch is recessed so that it can't be accidentally switched during a race)

Acceleration and Coast Brake control:

Turn Clockwise to increase acceleration in NORMAL MODE and to increase simulated Brakes in COAST MODE.

In NORMAL mode this control sets the rate of acceleration. The idea is that even though the trigger may have been snatched quickly to full throttle, the controller will only feed power to the car at the rate set by this control. This prevents wasted time during wheel spinning and loss of traction as you exit a corner, or the guide lifting out of the slot with powerful motors.

In COAST mode this control becomes a Brake Simulation adjustment suitable for those cars that stop almost immediately even with no brakes applied. The idea is that though the trigger has been released, the power fed to the motor decreases at a rate set by this control. Once the controller is no longer feeding power, the normal brakes will be applied at the rate you have set under BRAKE CONTROL as above. (For these cars the BRAKE will usually have be set to minimum)

Sensitivity control:

Turn Clockwise to increase Sensitivity.

his adjusts the trigger wiper sensitivity to enable you to set the controller feel for any car or track condition. There is a built-in CURVE control circuit (similar to the PWM controller) which works automatically together with the sensitivity adjustment to give quick and easy settings. As the Sensitivity is turned up, so the initial start speed also rises slightly to match.

The little blue pre-set adjustment on the right hand side of the wiper element provides an adjustment for the range of the MODE function set on the contact board via the solder bridges.
For details on this see Contact Board 10.

If the THROW ADJUSTMENT option has been fitted, then, when the trigger is released for braking, it only goes back as far as your throw adjustment has been set, so the start speed can be made quite high with a combination of this adjustment and the sensitivity adjustment.

Trigger Return Spring Tension and Optional Throw Adjustments:

Spring Tension:
Under the Trigger is the adjustment Screw. It operates against a cam arm that pulls the return spring. Turn clockwise to increase tension and anti-clockwise to reduce it. (you can see it work through the clear handle)

Throw Adjust:
Through the access hole in the rear fascia is the throw adjustment screw. This sets the position that the trigger returns to when released for braking. Turn clockwise to move the stop point further in. (you will see the trigger move as you screw it in and out) The adjustment sets the amount of travel for the trigger by moving the position of the Brake contact. The further in you set it, the higher the start-up speed of the car, because, as the brake releases, the trigger is already some way across the element.

Power LED:

LED Power Indicator. (BLUE for POSITIVE WIRED Track and RED for NEGATIVE WIRED Track.)

The LED extinguishes when the relay energises and full power is delivered to the car

TruSpeed Slot Car Controllers - for serious racers

Designed and built in the UK by Steve Hills.

TruSpeed was established by Steve Hills because he could not find a slot car controller with settings that could be customised to suit his driving style. Steve is a very keen slot car racer, and as he raced different slot cars, on different tracks, he realised that a one-size-fits-all slot car controller was not good enough.

Steve worked for many years in the audio industry and is the designer of the modern Bozak range of products.
He applied this design skill to his passion for slot car racing and TruSpeed was born.

Shop by Brand - TruSpeed Controllers

Maintenance Tips:

Once you feel a scratchy movement of the wiper fingers over the contacts, or can hear squeaking then it is advisable to clean them. Apply a small amount of switch cleaner/lubricant, lighter fluid, or something similar, onto a cotton bud and, through the air flow slots in the casing, gently wipe over the contacts on the board.

Be sure not to bend the cable at the exit of the handle. The wiring will break from metal fatigue after a while and cause intermittent operation. Wind the cable into a gentle coil as shown in the images and it will last.