{"id":5522,"date":"2022-04-05T20:29:55","date_gmt":"2022-04-05T19:29:55","guid":{"rendered":"https:\/\/www.rv-7.dk\/?p=5522"},"modified":"2022-04-05T20:33:35","modified_gmt":"2022-04-05T19:33:35","slug":"cowling-ducts","status":"publish","type":"post","link":"https:\/\/www.rv-7.dk\/?p=5522","title":{"rendered":"Cowling ducts"},"content":{"rendered":"

I have had a couple of setbacks lately.
\nFirst, after finishing the intercom, I noticed a bit of crackling noise with the headset noise reduction activated.
\nI found out that it was coming from the transponder, and that it was a common issue with Bose ANR headsets and ADS-B out transponders.
\nFirst I tried temporary installing a different type of transponder antenna, but that didn’t help.
\nAs far as I could tell from various newsgroups, the only solution was to move the antenna further away from the intercom.
\nSo I plugged the original hole and moved the antenna 1 frame further aft.
\nIt didn’t cancel the noise completely, but it is barely noticeable now.
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A photo from the inside of the new antenna cable routing.
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I received the two last engine cables a little while back. I installed them and they fit great.
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Another issue I came across, was the upper cowl inlet ducts.
\nI have been postponing them for to long, mostly because I knew the left duct would interfere with the forward prop governor.
\nThe first thing I did was to drill and cleco them to the upper cowl.
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As you can see, the governor is in the way.
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Well, it didn’t really take that long to trim it to fit around the governor, but unfortunately I need to trim the forward baffles to fit around the ducts as well.
\nFor now they have been glued to the cowling, then I’ll worry about the baffles next…
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