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Here is picture of another Viperjet panel that shows what I posted earlier

I have flown many planes in the AF as well as the airlines. Warnings below a switch is something I don't think I've ever ...

The “Heading” above the switches is “Fuel Transfer”, but I see your point

On another Viperjet they are labeled OFF/MAN/AUTO

That’s a nice elegant solution.

Pete

No I like it the way it is. One reason to be able to stop it is when taxing in if you shut down when the fuel is somewhere between the sensors the main tank won’t be full. Then you have to climb up ...

In order to provide power to the solenoids in the middle position I’m thinking another relay would be needed since the sensor can’t provide enough power(amps) to directly control the low pressure ...

Joe

If I want to prevent overfilling/venting the tank in manual (middle position) could we get 24v from the upper level sensor to the middle pole of the upper part of the selector switch.

Pete

Billski

Thank you for your comments/concerns.

As I said earlier I’m a builder and I’m building this as designed. The description of the operation of the fuel transfer computer in the origin ...

Eric

The HPFS can stay open in Auto. It just needs to be closed in the off position. That is what is used during engine start.

I’m using the Garmin G3X with a GAD27. The documentation says i ...

Billski

As Joe said I’m a builder, not a designer. Even though there aren’t many of these planes flying there are some and the fuel system has been proven to work with respect to the ability o ...

Great news. No rush.

Eric

Here is a copy of the specifications for what I will use for the low pressure solenoid. The original spec’d solenoid is not available. The high pressure one is a Duke’s aerospace part, the ...

I think you are mistaking where the low level sensor is. The main tank is approximately 75 gallons. The low level sensor is set at around the 60 gallon level. The plane burns 1.5 to 2 gallons per minu ...

Not being an electronics guy my question is would latching relays utilizing the fuel sensors be a path to control the logic?

Food for further thought is that I will need another “controller” to manage the hydraulic system. It also used a PLC.

OK I found another sheet that shows the switches. I might have the wrong ones. This sheet shows 2TL1-1 used as the transfer switch. I have attached a copy that shows that and what is hooked up to t ...

I have a parts list to build the Fuel Computer, and a pinout list for the computer. No programming information.

The pinout list that shows where the wires go is somewhat cryptic. Each acronym is ...

Each tank has a Princeton capacitive sensor to display fuel qty in the cockpit. This is separate from the fuel transfer system

Yes it is much prettier than my hand sketch and accurate. Only comment is it’s a fuel circuit, not hydraulic. When/if this is done I need something similar to control the hydraulics, so this is lik ...

Your second thought is correct. This is a plane under construction. Viperjet ceased operations and I never got their fuel computer so no wiring is done, but I’m at that stage now.

I have all the ...