Pong
In your photo No4 there seems to be possibly a roof vent just near the side door which is where the Cyclone vent would be positioned, as you moved along it draws the pong out with it. When stationary the vent turns to the direction of the prevailing wind & still draws the pong out.
Regards
Arthur.
DavidLooks intriguiing, just need to find a vent to attach it to now!! But thanks
David
In your photo No4 there seems to be possibly a roof vent just near the side door which is where the Cyclone vent would be positioned, as you moved along it draws the pong out with it. When stationary the vent turns to the direction of the prevailing wind & still draws the pong out.
Regards
Arthur.