You have no items in your shopping basket.

Product was successfully added to your shopping basket.

TruSpeed BP II Analogue Transistor Controller NEGATIVE

Ref: BPII-n

Quick Overview

TruSpeed BP II Analogue Transistor Controller with Adjustable Sensitivity and Brakes. For NEGATIVE track wiring.

Availability: In stock

* Required Fields



TruSpeed BP II Analogue Transistor Controller.

For NEGATIVE track wiring.

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

This controller is a popular choice for home and club racers looking for a high quality upgrade.

Features and Operating Guide:

  • Transistor Drive and Transistor Brakes. Fully DC controller
  • For Negative track wiring
  • Running current 3A. Maximum current 6A peaks
  • For Scalextric and Ninco the 3.5mm Stereo Jack plug is fitted ready for use
  • For Carrera there is no plug fitted. Cable ends are left open to connect
  • Comes with 1m cable
  • Brake adjustment (with automatic HOLD)
  • Sensitivity adjustment. (with automatic CURVE)
  • Additional Pre-set pot for sensitivity range adjustment
  • Adjustable trigger return spring tension
  • Single and double finger trigger supplied. (easy clip on change without tools)
  • Simple intuitive controls on the BP II make it easy to use and quick to adapt to your racing style, car, and track conditions

User Guide:

BP II Quick Start Guide (PDF)

Speed Control:

This is a Transistorised DC system. As the trigger is pulled, the DC voltage to the car progressively rises to increase the speed of the motor.

Brake Control:

This is a Transistorised DC braking system. A single rotary control sets the braking strength and has a built-in hold circuit to release the brakes once the car has slowed to a speed relative to the amount of brake you have selected. The useful feature of this design is that motor drives the brake circuit in such a way that the faster the car is going, the harder the brakes are applied. As the car slows, the brakes are gradually released to give very balanced and predictable control. The brake and hold remain balanced to leave you free to race confidently.

Sensitivity Control:

This adjusts the trigger wiper sensitivity to enable you to set the controller feel for any car or track condition.

The small, square blue pre-set potentiometer, on the board at the end of the trigger contact segments, allows adjustment of the sensitivity range. Turn anticlockwise to decrease sensitivity.

Adjustable Spring Tension:

Easy adjustment with a cross head screwdriver to set the spring tension. You will see the little tensioner cam moving to pre-tension the spring.

Trigger Single and Double Finger Sections:

The controller is supplied with the single finger section fitted and the double finger option in a little packet to fit as required.

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.

Additional Information

Ref BPII-n
Brand TruSpeed
Scale No

Secure Online Shopping

Secure payments by Opayo

We only charge for items when ready to be dispatched

Payment by card or PayPal is pre-authorised online and is only charged when the items are ready to be dispatched.

Pre-order items will only be charged when the product arrives in-stock and is ready to be dispatched.

Payment Info

Postage & Packaging

Worldwide Delivery Service

UK and International | Delivery Information


We deliver throughout the UK and worldwide.

We ship direct from our office in Nelson, Lancashire UK.

Orders are processed and dispatched 5 days a week (Monday to Friday)

We aim to process and dispatch all orders received by 5pm Monday to Friday on the next working day.


The shipping price is dynamically calculated according to weight and destination.

The shipping options and prices are displayed at the checkout pages before placing order.

We take great care to ensure that each order is securely packed.


EU Delivery - No More Surprise Import Fees on Parcels!


By selecting "Hold for later delivery" on the checkout page, you can now purchase any items, and we can keep them held at our premises, instead of shipping them to you at this time. We can send multiple orders in one parcel instead of several, which can help save on shipping costs - More details

Related Products