Redesigned UL Power Engine Mount
Reference the question on the CG Range
The established CG Range is 80.49 to 85.39. At his time we are just slightly forward of the limit.
Glad to see you are taking the steps to properly engineer the engine installation Al (even if it means some backing up - redo).
Is that weight also with engine oil and propeller?
If so, the weight is looking very good.
I am also wondering about battery power for the ignition. Does UL recommend a separate back-up battery for the ignition system that is isolated from the rest of the electrical system, that would keep the engine running in the case of a total electrical failure?
Yes, the weight includes oil (In the Containers at the correct ARM) and the propeller.
UL does not make a backup battery recommendation, however we intend to provide an alternate battery source.
UL offers dual fuel pumps which we have installed. Redundant ignitions are part of the package we are installing.
UL Power does offer a second ECU which we have not decided to purchase at this time.
I may have not been clear on my initial post concerning the direction we are proceeding.
This is a fine kit that we have an opportunity to explore a different propulsion system.
We intend to take the steps necessary to make this a properly engineered installation.
We had always understood that changes would be necessary to stay within the flight envelope and established practices.
The original mount was our first attempt to establish a base line then to proceed forward.
We value the observations and input from the community, please keep them coming