Hadley,
I hope to convince you to go with turbocharging as it is already proven to work well. Think of the possible problems that can come along with engineering a new approach. It can and probalby would add considerable cost and many more hours of engineering and installation of a new system, then improving it, and chances are it may never really work out.
Congratulations on getting the airframe completed! If you go with a turbo installation from the beginning I think you will be very happy with the power and ease of control of boost, tuning etc.
The heat issue is just something to be very aware of and take precautions. It is not difficult to protect the nearby exposed items from the heat. It just needs to be done. I probably over did it but the heat is not going to burn anything in my cowling. Your higher OATs will not make that much difference in my opinion.
I am willing to share all I know about my turbo installation. I can email you lot's of pictures etc. showing everything I had to do. I did have to work out several bugs in the installation and it got very frustrating. You can take advantage of my learning curve and get it right the first time. You can even take advantage of the little changes I have been making to the SDS tuning. There is lot's of help and information available for a turbo installation. I think you will be pretty much on your own with a different aqpproach, and that can get lonley indeed, especially when you start flying behind something that you mihgt not be so sure of.
One of the most important things you can do for safety is to get rid of the throttle by wire setup that is part of the Subaru ECU. A pilot should have control of the throttle, not some darned computer!
I say put a turbo in it and take advantage of the available information on a system that works well! After all the upgrade stuff you have had to do already, why go off on another experiment?
Convinced?
Randy C
I hope to convince you to go with turbocharging as it is already proven to work well. Think of the possible problems that can come along with engineering a new approach. It can and probalby would add considerable cost and many more hours of engineering and installation of a new system, then improving it, and chances are it may never really work out.
Congratulations on getting the airframe completed! If you go with a turbo installation from the beginning I think you will be very happy with the power and ease of control of boost, tuning etc.
The heat issue is just something to be very aware of and take precautions. It is not difficult to protect the nearby exposed items from the heat. It just needs to be done. I probably over did it but the heat is not going to burn anything in my cowling. Your higher OATs will not make that much difference in my opinion.
I am willing to share all I know about my turbo installation. I can email you lot's of pictures etc. showing everything I had to do. I did have to work out several bugs in the installation and it got very frustrating. You can take advantage of my learning curve and get it right the first time. You can even take advantage of the little changes I have been making to the SDS tuning. There is lot's of help and information available for a turbo installation. I think you will be pretty much on your own with a different aqpproach, and that can get lonley indeed, especially when you start flying behind something that you mihgt not be so sure of.
One of the most important things you can do for safety is to get rid of the throttle by wire setup that is part of the Subaru ECU. A pilot should have control of the throttle, not some darned computer!
I say put a turbo in it and take advantage of the available information on a system that works well! After all the upgrade stuff you have had to do already, why go off on another experiment?
Convinced?
Randy C