Saturday, 4 March 2017

Windscreen de-mister vents - finished

Parts

32mm flexible hose and some fittings, normally used on fishtanks/ponds, arrived in the post. A little on the heavy side perhaps but its only a short run.  The fittings were adjusted and tails shortened - I only need moderate air tight, not hermetically sealed water tight.

Heater Box

Stitch drilled then hand filed a new hole in the front of the heater box to take a grommet and, after this picture, right angled fitting.


Not obvious from the shot - I restricted flow to the existing 4x outlets with some drilled out end caps - the idea being to balance the outputs and not exceed the available push from the heater fan. ~20% smaller on the bottom and ~50% on the top outlets.


Vent plumbing

The vent plenums attached in a T formation with flex hose all firm push fit...

 ..and installed under the dash, not that much room in here - the back of the clocks share this space.

The visible part finished with button head bolts, and a brief test shows some air comes through - the fan pushing and the low pressure area behind the screen should help pull warm air onto the inside. Will have to wait for a damp day or early morning to test it properly.



Happy with that.

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