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Bob's RV-8 Build Site
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Date:  12-30-2018
Number of Hours:  1.20
Manual Reference:  
Brief Description:  Instrument Panel Vent

As I stated before, I decided to use screws instead of riveting the sub-panel covers on. It just makes the panel a little more modular in nature. Sometimes the key to working on these smaller airplanes with tight quarters is to make it as maintenance friendly as possible.

Anyway, I was able to easily cut the hole in the sub-panel after marking it carefully to make sure the plenum on the back side had enough clearance to thread onto the vent nozzle. The vent required a 2.75 inch hole and the plenum is 3.00 diameter. The cutout in the left sub panel was modified to fit the plenum with about 1/16 in clearance all around to tighten the plenum to the nozzle.

Fortunately the process was completed fairly easy by taking the sub-panel cover out into the shop and boring it to size with my mill.

The vent is from Stein's and is quality.....but not cheap! I bought the smaller vent for the rear seat pax due to the limited space for installing the vent.
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Vent hole cut for Extra Large Vent

Vent hole cut for Extra Large Vent

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Should keep the pilot cool!

Should keep the pilot cool!

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New Vents

New Vents

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