First off, I despise intermittent problems -- they're challenging to reproduce, and by their nature, often lend themselves to false hypotheses, rabbit holes, etc.
So..that being said -- here we go.
My (nearly) new RV-7, with Lyc. IO-360-A1B6, has developed an intermittent starting issue when Hot (clue?). Turning the key to "Start" and I am rewarded with a >CLUNK< sound from the nose of the aircraft. Volts are 13.2Vdc (I have a LiFePo battery) and there's no indication of anything happening. Shoot -- release the key, gather my thoughts, shimmy in the seat a bit, check everything, try again - turn the key to "Start" and Wha-Vrooom...she starts on the first blade -- what the ????.
As mentioned, I have an Earthx ETX680. The buss volts are 13.2Vdc and there's no visible sag during cranking as displayed on the Garmin G3X.
So, could it be the Van's starter relay (ES-24021) not engaging good enough? The Skytech 149LS-12 motor or starter drive solenoid? Or....? Worth mentioning, I originally did NOT have a wire running from the "I" terminal to the starter motor solenoid -- However, I added the wire, removed the jumper per RV-10, RV-14 plans...issue still happens.
Any brilliant suggestions would be appreciated.
Brian
So..that being said -- here we go.
My (nearly) new RV-7, with Lyc. IO-360-A1B6, has developed an intermittent starting issue when Hot (clue?). Turning the key to "Start" and I am rewarded with a >CLUNK< sound from the nose of the aircraft. Volts are 13.2Vdc (I have a LiFePo battery) and there's no indication of anything happening. Shoot -- release the key, gather my thoughts, shimmy in the seat a bit, check everything, try again - turn the key to "Start" and Wha-Vrooom...she starts on the first blade -- what the ????.
As mentioned, I have an Earthx ETX680. The buss volts are 13.2Vdc and there's no visible sag during cranking as displayed on the Garmin G3X.
So, could it be the Van's starter relay (ES-24021) not engaging good enough? The Skytech 149LS-12 motor or starter drive solenoid? Or....? Worth mentioning, I originally did NOT have a wire running from the "I" terminal to the starter motor solenoid -- However, I added the wire, removed the jumper per RV-10, RV-14 plans...issue still happens.
Any brilliant suggestions would be appreciated.
Brian
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