Just spoke w/ Bill at Airflow Systems (https://www.airflow-systems.com/rv-10/). Very helpful! Really wish they had more photos on website, although I did learn a lot from those posting here on VAF. Figured some others may have similar questions, so...
- Quickbuild presents no problems. AFAIK, baggage floor is not installed by Van's. If it is, then an access needs to be added for condenser lines.
- Routing lines down pax sidewall is a good way to go, since it is cooler and does not further clutter the tunnel. Builder routes the lines then obtains a loaner crimping tool from Airflow to install fittings.
- Airflow offers a so-called "Australian" option for increased evaporator airflow, but I don't think I need it. Adds about 5 lbs and 5 Amps draw.
- Evaporator airflow can be improved by using flat vents in place of eyeball vents in overhead. I'm planning to use the carbon fiber Aerosport Products Overhead Console (http://www.aerosportproducts.com/rv10overhead.htm), but may stick w/ the cool looking (costly!) eyeball vents.
- Installed system weighs about 40 lbs
- I will forego a fresh air mixing valve in favor of keeping stock front and rear fresh air vents. Not as elegant, but really simple.
- Panel switches include an ON-OFF and a separate 3 position fan speed control.
- From what I can tell, early problems with belts and idler pulley have been solved w/ serpentine belt system.
- Recommends turn-down exhaust extensions to both direct hot exhaust away from condenser, and help quieten airplane.
- Recommends sending flywheel to engine builder (in my case, Barrett) and tell them to make sure the pad on the lower LHS of block is drilled and tapped w/ studs for the compressor/idler mount.
- Recommends increasing oil cooler from stock 13-row to 15-row, which needs turning vanes at inlet to improve air flow. Also, install manually operated butterfly in duct to oil cooler to regulate as needed.
- Recommends adding cowl louvers on lower side(s) for improved exit air flow that can later be blocked if it's more than what is needed for engine/oil cooling. Bottom of cowl is not a good place due to higher pressure at that location.
- Recommends sealing corrugated panels in aft baggage bulkheads.
- Evaporator sits on shelf and is accessed by removing upper aft baggage bulkhead for freon charging, etc. Return air is appx 6" square penetration in lower aft baggage bulkhead.
- Expect installed system to shift CG about 1/2" aft.