CubCrafters has recently been awarded another Supplemental Type Certificate (STC) by the FAA for the new 3X3 (3-by-3) landing gear, available as a modification for all PA-18 Super Cubs.
The new design moves the wheels 3 inches forward and 3 inches lower than stock gear and increases the strength of the gear system as a whole, according to company officials. The gusseted axles are machined from solid 4130 steel, and welded to larger diameter thicker walled main tubes extending from the fuselage attach points. The new cabane vee is also made of stronger material and angled forward to accommodate the new axle placement. With this arrangement, the angle-of-attack is improved and weight is transferred further aft of the main wheels. officials said, noting this redistribution of weight, along with added strength, is what makes more aggressive braking possible.
The STC is available immediately. It includes two new 3X3 landing gear legs, a cabane vee, two lower shock struts and copper brakes lines. If a customer already has CubCrafters’ extended landing gear, the lower shock struts can be re-used. The STC’d 3X3 gear kit sells for $2,250.
For more information: CubCrafters.com