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Has anybody installed one of these fuel Pulsation Dampers and if so, did it stabilize the fuel flow indication? It is supposed to be installed right at the Red Cube output on a low pressure (carb) system.
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Pump on answer: A wise man suggested + H2
An accomplished RV builder and pilot suggested that there was no downside to keep the pump on. It’s what he does. Then there’s the H2 specifics. The fuel has to come up from tank position against gravity to the engine driven pump over the top of the engine, or roughly twice as high as a “regular” installation. As protection against vapor lock, I run the pump all the time. I check the engine driven pump by shutting off the electric pump twice during preflight, once immediately after engine start, the second time during run up/mag check sequence.
Maybe a two-speed pump? It’s been common in passcar for a long time now. Really, two voltage, direct PWM may not work for an interrupter type pump like it does for a DC motor. Hmmm. |
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