Going to disagree Baz,spoke to tester first hand the other day at length and having attended the VOSA facillity on many ocassions the equipment is the same as I have in my test station and is in a couple of others I have been to.
Only difference is I apply the brake and not a given load,I still go by what I said previously and reading what has been posted and quote .
"simple physics here the action of the proportional valve will be relative to the inertia/mass of the vehicle."
There is no inertia involved in a static roller brake test and a straight pressure reducer would be better suited if needed at all.
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Cost : Little as possible.
Thanks : To those who by their generosity my build has progressed.
Its a handmade sports car not a flaming kit car !!!
If at first you dont succeed,avoid skydiving...
No parachute require to freefall,only if you want to do it twice.
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