12 December 2025: Slightly different overall dimensions have been reported based on measuring tanks or ones on display aircraft, lengths of 182", 182.5", and 186" and diameters (constant section) of 25.5", 25.78" and 25.783", which sounds like a conversion from a metric measurement. The 182.5" is reportedly also taken from a stations diagram, which is close to a gold standards; the 25.5" is based on a careful measurement of the circumference of a tank as 80" (a second tank measured slightly less), which calculates to a diameter of 25.465" using pi to five places. I would note, particularly with respect to the somewhat snarky insistence on 25.783", that any of those diameter measurements will suffice since the difference is minuscule at model scales.
Someone asked for the dimensions of the Fletcher tip tank carried by the T-33 (and occasionally seen on the F-84 Thunderjet), so down another rabbit hole I went. Thanks to Jerry Wells, who measured and photographed the example at the National Naval Aviation Museum in Pensacola, this is the result:
Jerry Wells Photo
The trailing edge of the fin at the aft end of the tank is angled slightly forward and the tank is mounted with it parallel to the ground, not with dihedral like the wing.
Note the little access door on the inside of the aft end of the left tank only for storage of safety pins, etc.
