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MeHenck

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About MeHenck

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  1. MeHenck

    No fuel crossfeed.

    I have been observing and cogitating about this issue for a few years in three high wing models. My old Glastar, with only a "both/off" fuel selector, would do something similar to yours except it would preferentially use from the left tank . I once performed an experiment where I flew for an hour with two gallons in the left tank and 12 gallons in the right. I landed with two gallons in the left and 5 gallons in the right. In my experience it never went below two gallons while there was sufficient fuel in the other tank. Many others report similar issues with that type, but there has never been an incident I am aware of in that model of aircraft where there was fuel starvation with sufficient fuel in the other tank. The Cessna 152 model I fly in occasionally has a similar issue. That aircraft has only a "both/off" fuel selector and no way to monitor in flight the status of fuel levels in the wings and when we land, frequently we note quite a difference in fuel levels in the tanks. Reportedly, there has never been a fuel starvation issue with adequate fuel remaining in one tank in that model as well. Cessna doesn't seem worried about uneven fuel levels in the wings and I would guess there are a ton more hours flown in that type by sloppy pilots/students than the FDCT type. It would be my observation that the hydrologic pressure head between the wing level and the "Y" where the two fuel lines join in the mushroom of the CT would be high enough to overcome any differential in the venting pressures. The issue of a severe skid/slip during flight causing the fuel to unport the full tank's outlet would remain a possibility but a disaster in that setting would require no fuel in the favored tank, and the only fuel in the unfavored tank to slosh outboard long enough for the fuel lines to completely empty. That situation would require a significant skid/slip and low fuel in the unfavored tank. It would be my assertion that as long as you can see any fuel in either of the sight tubes, fuel covers the outlet port and therefore supplies fuel to the system. Gravity is in your favor, overcoming any vent differential. If you do fly with extremely low fuel levels, make sure you can see some fuel in at least one of the sight tubes. If you can not see fuel in either of the sight tubes, your exit ports are uncovered and things could get exciting shortly.
  2. Crow Enterprizes have what you need. http://www.crowenterprizes.com/index.htm They have the dimensions to make seat belts for CT's already as many CT owners have ordered before you. I can't remember exactly the cost but my recollection is that they are about $150-175 for the set. You only have to hit your head hard once because of the OEM slippery webbing that doesn't stay tight when you hit turbulence. Your significant other will thank you when you don't get a concussion because of a bump.
  3. MeHenck

    No fuel crossfeed.

    I realize the filter is downstream from the T connection but if there was a piece of debris somewhere in the line, perhaps it could act as a one way valve.
  4. MeHenck

    No fuel crossfeed.

    How about the inline fuel filter? I recently bought a CTLS from a fight school with dubious maintenance practices. Attached is a photo of the junk I found in the inline filter. Could yours be somewhat clogged such that when fuel tries to flow backwards through the filter some debris obstructs but causes no obstruction with the forward passage of fuel?
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