GrayHawk
Well Known Member
I fly an older (1991) RV-6A, originally built with all piano hinge attachment of the original gel coated cowling where the ram air scoop came as a separate piece. Engine is O320-D1A with usual FAB, vertical induction through carb. Plane originally has a Warnke wood prop, but now has a Sensenich metal prop with a 4" extension. Total time is about 1700 hours, which has resulted in:
1. Cowling is cracked in places and getting worse.
2. Cowling was too close to alternator pulley resulting in wearing a arc shaped hole through cowling.
3. Prop change & extension resulted in wide spinner to cowling gap.
4. Rear attachment hinge on upper cowling worn out & replaced with screws with rivnut attachment tabs.
5. Some other issues also
So as part of my improvement work on this plane I'd like to give it a new cowling. I've gathered a couple of orphans towards this goal: an original gel coated cowling (separate air scoop) & a newer 'green' cowling where the scoop is integral. I thought the newer one was for an O320 but when it arrived I see it is marked O360.
Questions are:
1. Is there any reason(s) I can't use the newer cowling?
2. Attachment at the firewall end will need to be something other than piano hinge. What is the best retrofit attachment methods to use, short of taking the whole firewall apart.
Thanks,
1. Cowling is cracked in places and getting worse.
2. Cowling was too close to alternator pulley resulting in wearing a arc shaped hole through cowling.
3. Prop change & extension resulted in wide spinner to cowling gap.
4. Rear attachment hinge on upper cowling worn out & replaced with screws with rivnut attachment tabs.
5. Some other issues also
So as part of my improvement work on this plane I'd like to give it a new cowling. I've gathered a couple of orphans towards this goal: an original gel coated cowling (separate air scoop) & a newer 'green' cowling where the scoop is integral. I thought the newer one was for an O320 but when it arrived I see it is marked O360.
Questions are:
1. Is there any reason(s) I can't use the newer cowling?
2. Attachment at the firewall end will need to be something other than piano hinge. What is the best retrofit attachment methods to use, short of taking the whole firewall apart.
Thanks,