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Loehle 5151 Mustang

lo5151


A 75% scale ultralight P-51 Mustang that qualifies as an LSA. The entire 5151 kit is designed for the inexperienced builder and is estimated to be completed in 400-500 hours. Almost all parts are pre-cut to exact dimensions, grooved, shaped and even tapered to ensure a perfect fit. The gussets and stringer attach pieces used in large quantity in the airframe are die cut like in a good model aircraft kit. The canopy and metal parts are also pre cut and those “difficult to make” parts are even preformed, predrilled and ready to assemble. All hardware comes separately packed and labelled for each section of the aircraft to avoid loss or confusion where parts go. The airframe kit includes everything to build the aircraft less engine, instruments and paint. Covering material and fabric glue, prop, tyres etc., and the enormous 18 inch custom spinner is also included in the airframe kit. Although the ROTAX 582LC is the recommend engine, there are several engine options including a 4 cyl., inline 4-stroke engine available.

The construction of the 5151 Mustang consists more of an assembly than actually building, since all parts are highly prefabricated. Much of the assembly is of geodetic construction which, while it looks “fussy” it is actually a simple technique producing an exceptionally strong airframe for the structure’s weight. The fuselage consists of a conventional simple box-type construction which is transformed by formers and stringers into the shape of a P-51. The heart of the 5151 is the massive 10 x 12 inch centre section box spar which takes the optional wing tanks and the retractable or fixed landing gear, which ever the builder desires. The outer box spar i.e. wing panels attach to the centre section and are removable for storage or trailer, which leaves a foot wide structure on the landing gear for easy handling. Once the spar is assembled, the wing ribs simply attach to the spar and no jigs are needed since the aircraft is designed to be built on a flat bench. Also a remarkable feature is the technique used by the designer to virtually eliminate building errors in those critical components such as washout, taper etc., since the wing is tapered and all 12 wing ribs are different.

All tail surfaces are also built conventionally and consist simply of a leading edge spar, pre-cut trailing edge, ribs and geodetic bracing. The ribs are built over full-size drawings and are also built on the workbench, just as the entire rudder, elevators and vertical stabilizer. The retractable landing gear and also the fixed version is made of 4130N 2 inch chromolly tubing and comes tack welded.

The 5151RG has retractable undercarriage.

 

Loe-5151-02
5151-RG

 

By 2014, the covering no longer came as part of the kit (available separately though), and only the Rotax 582 engine was offered. Ribs are solid wood - already cut to proper airfoil shape; simply require cap strips upper and lower.

5151
Engine: Rotax 503, 50 hp.
Speed max: 95 mph.
Cruise: 75 mph.
Range: 325 sm.
Stall: 28 mph.
ROC: 700 fpm.
Take-off dist: 150 ft.
Landing dist: 250 ft.
Service ceiling: 12,500 ft.
Fuel cap: 5-13 USG.
Weight empty: 513 lbs.
Gross: 885 lbs.
Height: 6 ft.
Length: 22.9 ft.
Wing span: 27.4 ft.
Wing area: 130 sq.ft.
Seats: 1.
Landing gear: tail wheel.

5151 RG
Engine: Rotax 582, 65 hp.
Vne: 100 mph/ 89 kt.
Cruise: 85 mph/ 79 kt.
Range: 325 nm.
Stall: 30 mph/27 kt.
ROC: 1200 fpm.
Take-off dist: 150 ft.
Landing dist: 250 ft.
Service ceiling: 12,500 ft.
Fuel cap: 13 USG.
Weight empty: 600 lbs.
Gross: 885 lbs.
Height: 6 ft.
Length: 22.9 ft.
Wing span: 27.4 ft.
Wing area: 130 sq.ft.
Seats: 1.
Landing gear: tail wheel, retractable.

 

5151-RG
Engine: Rotax 582, 64 hp
Wing span: 8.4 m
Wing area: 12.7 sq.m
MAUW: 300 kg
Empty weight: 203 kg
Fuel capacity: 25 lt
Max speed: 150 kph
Cruise speed: 150 kph
Minimum speed: 55 kph
Climb rate: 4.2 m/s
Certification: Vz
Seats: 1
Fuel consumption: 13 lt/hr
Kit price (1998): $7995

 

 

 

 

 

 


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