Same question I posed on the UAT thread... if we are concerned about flow rates through UATs and valves and filters on the larger motors, why not just parallel the last bit of the system (after the last "main" tank .. you could even set up two clunks in the last main tank just like the Laser engine guys suggest for their two cylinder/two cab V-twins) and "Y" it into the engine at the last moment .. two UAT's two filters, two valves, etc.

If it's just viscous flow limits in the pipes, fittings, and tubes, this should show it right away. If not it must be either the flow impedance inside the motor (e.g. the vaporizer needles) or the pump can't produce enough throughput ... or there is something else wrong in the engine control system (hence all the comments about "return to jetcat" which is the only way to handle this list of issues).

Seems inevitable that if you feed the beast enough fuel, it ought to produce the RPMs it should .. or shoot flames .. the kero has to go somewhere :-)

Maybe naive, but worth a try, I think...

Dave McQueeney