Originally Posted by
Ascend Charlie
The engine seems to lack ducting to take the gases from the N1 turbine (has proper inlet duct from combustor) and guide them onto the N2 wheel. Just looks like the hot gas expands into a big box and the only way out is the N2 wheel.
Hill states at 1:04:22 that “we have an inter duct that’s missing from this because it’s a stand”.