We'd like to run the pipe down the side of the body on the T roadster thingy. So it's O.K to burn yourself on any part of it except the bit below the cockpit? Heightwise, I was thinking about the emissions & decibel tests we had to comply with for the Pop. The meters were at set heights from the ground, which would suggest minimum/maximum tailpipe height wouldn't it?
From section 01 BIVA manual group M1 vehicles
Position the vehicle within the authorised test area. With the sound
meter horizontal, set the microphone height so that it is at the height of
the exhaust outlet or 200mm from the ground, whichever is higher.
a.
At an angle of 45 degrees to the exhaust outlet in the direction
which gives the greatest distance between it and the vehicle
contour
b. At a distance of 500mm from the exhaust outlet.
With the vehicle at normal operating temperature, run the engine at ¾
of its ‘maximum power’ speed, and note the sound level reading
obtained.
Note 1:
Manufacturers drain holes are permitted in silencers
Note 2:
The exhaust may have several outlets up to 300mm apart
connected to the same silencer. In this instance the microphone must
face the outlet closest to the vehicle contour or highest from the
ground. In all other cases, separate measurements must be taken for
each exhaust outlet; the highest value obtained is the test value.
Note 3:
Where the engine maximum power speed is not available, the
test may be carried out at 2/3 of engine maximum design speed.
