I'll post a copy of what the MOT manual says on this, but the difference between parking brake efficiency requirements goes on whether the car has single circuit brakes or dual circuit ones and dual circuit was made compulsory from 1978 onwards even if nobody told Reliant about that then-new regulation. That parking brake test requirement info:Mitsuru's friend from another forum wrote:Just a thought and correct me if this has been updated but the Construction and Use
Regulations 1974 dictate that the handbrake needs to be efficient enough to stall the
engine in first gear with the engine at idle.
This section covers it.
Your friend might have a point but only if the naughty tester didn't bother to take the decelerometer into the car when they tested the brakes, in which case their experience and some arbitrary yardstick such as locking the wheels up might be acceptable in their mind but strictly speaking isn't. Don't forget that they don't have to use the rollers on your car (or technically on a manual for that matter) but regardless of all that, I still tend toward the notion of getting the original setup working properly if you can. If it doesn't do the job then it can only be down to some basic lack of maintenance somewhere, probably the usual problem of a cable being adjusted when in fact the adjustment should be made at the shoes, this often happens and folklore makes it the car's fault!
If I can get 112% of service brake effort out of a Dolomite's parking brake on test then surely your Neon can muster the required percentage for a dual circuit car easily enough?
But would that not require some form of winch to be attached to the car so that the anchor could be manipulated after it's been deployed? 






