Jim Mederer used a interesting technique to tune the turbo
for aircraft use. Most turbos are designed for automotive
use where fast spool up is necessary.
The probelm with this is at high continuous aircraft power the
turbine will over heat and or  over speed and fail.

What Jim did was use a controlled leak in the exhaust manifold
to get just enough boost.

Works better than a waste gate with low A/R turbos.

This has a side benefit of reducing the exhaust back pressure.
Less back pressure more power.

Paul Lamar

The Rotary Engine News Letter. Powered by Linux.
If you want off the list PLEASE let me know and I will
remove  you.  ACRE NL web site. http://www.rotaryeng.net
You Tube http://tinyurl.com/beqqxas
Copyright 1998-2016 All world wide rights reserved.