---------------------------------------------------------- RV8-List Digest Archive --- Total Messages Posted Mon 04/05/10: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:48 PM - Re: Princeton 18-5B-5S Fuel Senders Won't Calibrate (Speedy11@aol.com) ________________________________ Message 1 _____________________________________ Time: 08:48:11 PM PST US From: Speedy11@aol.com Subject: RV8-List: Re: Princeton 18-5B-5S Fuel Senders Won't Calibrate Matt, That is exactly what I advised you about months ago. The Princeton probes do not calibrate properly. I've filled and drained my tanks seven times. They still will not calibrate. I recommend builders use anything other than Princeton probes. And try to get them on the phone to talk about it. Good luck with that. Mine are also prosealed in. Still, I'm tempted to rip them out and throw them in the trash and replace them with floats. What I'm doing now is gradually calibrating the fuel flow transducer to get it as accurate as possible and then I'll simply keep track of how much has been burned or how much is remaining. Since I used a both selection on my fuel selector, it is easier for me to know about how much remains in the tanks. It will be a little more challenging for you since you'll be switching left and right. I've recommended for the past year that nobody buy the Princeton probes - and I still recommend against them. Stan Sutterfield I installed Princeton 18-5B-5S Fuel Senders in the left and right fuel tanks with Proseal (see attached). Last week I installed the wings permanently and today I torqued all of the fuel lines from the wings to the fuselage. I got 21 gallons in 5.25 gallon increments ready to calibrate the 5-set point Princeton probes today. They both powered up fine and started flashing the left light indicating the Empty set point. I pushed the button once per the calibration instructions to go to the 1/4 level. Instead of getting the #2 led flashing, I get the all three LEDs flashing sequence indicating that probe "Can't be calibrated"!!! >From the installation manual: CAL Error (three flashing LEDs) - The probe failed to calibrate. Possible causes: water in the tank (NO), inner brass rod is shorted to the outside aluminum tube (PROBABLY), Alcohol in the fuel (NO), trying to calibrate full first instead of empty (NO), or the probe electronics have failed (MAYBE)." Yeah, you read all that right. The best part of this story is that I Prosealed these babies in, installed the wings, and now discover that both probes are defective or what even. How can this fricken be? Its too late in the game for this. Replacing these stupid probes is going to be a major pain not to mention the fact that likelihood of leaks are now going to be high. I just can't believe it. This is so frustrating. Why didn't the manual advise to check this long before now? Like before they were installed, during installation, and right after installation before the Proseal cured? Oh, did I mention BOTH are bad? How can this be... How disheartening. Please tell me I'm just mis-reading the calibration instructions...? I'm going to go out on a limb here and say avoid these piles of garbage... ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message rv8-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/RV8-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/rv8-list Browse Digests http://www.matronics.com/digest/rv8-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.