IN FOCUS: VOSA Approved Motorcycle MoT Bay Equipment.

Looking at the internet is a great way to gain information on the strength of weaknesses of a companies products. Today’s task has been to look at Motorcycle MoT Bay Packages that are available and cross check the various aspects of the packages that have been put together by the various manufacturers.

Headlight Testers


A majority of motorcycle mot bays utilise a beam setter with a mirror/visor arrangement for aligning the body of the beam tester to the presented motorcycle. Although this meets the minimum requirement for the approval of the bay it is not the ultimate in terms of measurement accuracy due to the potential of introducing parallex errors into the alignment process. You can read a little more about parallex errors in headlight beam assessment by reading this related blog post.

Ultimately all manufacturers have the option to include such a  tester to their bay proposals but only GETECH, from the information available on the internet, supply such a headlight tester as a standard inclusion to the MoT bay.

Roller Brake Testers:

Display for a modern electronic motorcycle brake tester

Many are approved for use within the MoT scheme but not all brake testers are the same and comparing on a like for like basis is quite difficult as items like motors may have different ratings – GETECH 2.2kW Vs. Balco 1.5kW and of course some product feature differences such as the bi-directional capability of a GETECH GE2 brake tester Vs. the single direction operation of the Saxon unit in its standard supply guise. To simplify the comparison process I produced the following table:

Motorcycle Brake Tester Comparison Chart


A modern brake meter decelerometer and printer
A modern brake meter decelerometer and printer

Decelerometers are a fairly recent introduction to the equipment requirement for a motorcycle mot bay but all stations must have such a device to allow the brake test to be completed in the event of a roller brake test failure or if the machine is not suitable for passing through a roller brake tester. There are several models available but the most commonly found brake meters are the Bowmonk Brake Meter or the G-Meter from Turnkey instruments.

The Bowmonk Brake Meter is described in detail on the GETECH website HERE where it can also be purchased online, but in summary the Bowmonk is a method by which the deceleration forces can be measured and a braking efficiency calculated. It is not a detailed method of brake inspection that allows individual axles to be assessed as in a roller brake test, but it gives sufficient information to the tester for a judgement to be made on the suitability of the vehicles brakes.

The G-Meter works in exactly the same way as the Bowmonk in terms of measuring the retarding forces and it also has some benefits over the Bowmonk system as the unit is smaller and could be considered more suitable for motorcycle testing. However there are a couple of drawbacks: The first is the approved method of attaching the G-Meter to the motorcycle which is achieved using a “strap” type arrangement – cheaper than the bracket used on the Bowmonk but has the disadvanatge that the strapping can wear over time which may prevent the decelerometer from being tightly attached to the motorcycle to get the most accurate result possible. A further disadvantage of this system is the yearly calibration required which increases the operating costs of this unit when compared to the Bowmonk version. It is for this reason that the Bowmonk decelerometer is the unit of choice for GETECH.

You can find out more about GETECH MoT Equipment packages on the GETECH website or call 0844 800 9785 for fast professional advice.


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