Piper Comanche Tip Tanks

An older Cessna with an add-on aux fuel tank.
Add-on aux tanks from Flint for many older Cessnas increase range and, in some cases, increase max weight, offsetting the weight penalty of the install. Photo By Charles LeRoy Cook
Gemini Sparkle

Key Takeaways:

  • Early PA-24 Comanche models had insufficient fuel capacity (60 gallons), leading to the introduction of an optional 90-gallon system by 1961.
  • Osborne tip tanks, providing 15 gallons each, were a common aftermarket modification to increase fuel capacity for both single and Twin Comanches.
  • GAMI now supports existing Osborne tip tank installations with parts and technical assistance, though new system sales have significantly declined.
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The PA-24 Comanche is a fine airplane, but for the first three years of its production, it held only 60 gallons of fuel, not quite enough for the 250-hp version, which is the reason an extra 30 gallons became available in auxiliary wing tanks by 1961. On the early Comanches, one frequently sees Osborne tip tank installations holding 15 gallons each, and they are sometimes found even when the optional 90-gallon fuel system is installed. The Twin Comanche is also a favorite target for adding wingtip tanks. According to GAMI, very few of the Osborne systems for Navions or Comanches were sold in recent years. The new owners will support existing installations with parts and tech support for as long as possible.

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