Vintage Air Sure what?

[sqrlnts]

AC is charged and working good while at speed. At a stop my mechanical fan with no shroud is not pulling enough air, which is causing the compressor to cycle. I will need to add a pusher fan on the condenser. My plans are to run a relay off the brake switch to power the fan. This will allow the pusher to come on before I get to a stop for in city driving.

[roger55]

Originally Posted by sqrlnts

AC is charged and working good while at speed. At a stop my mechanical fan with no shroud is not pulling enough air, which is causing the compressor to cycle. I will need to add a pusher fan on the condenser. My plans are to run a relay off the brake switch to power the fan. This will allow the pusher to come on before I get to a stop for in city driving.

I am not a fan of pusher fans. Sorry, I always cringe when I see one. I think it is much preferable to have a good shroud.

Pusher fans have to be mounted directly to the condenser and most times through the radiator core too. Adds vibration and decreases their life. The bulk of the fan being mounted in that location also blocks air flow on or off.

I'm keeping the front of my condenser free and clear of any obstructions.
I had a shop build me this shroud. Took my radiator and fan down to the shop so he could custom make it a custom fit.

Oh, I will also be using a trinary switch so my fan will come on when the A/C pressure requires it as well as when engine temperature requires it.