HP .61F GOLD CUP ABC or Ringed Front Intake Radio Control #99-2203

This .61 features ABC or ringed construction, Double ball bearings, Schnuerle porting (pioneered by HP over 30 years ago), Slide carb with accelerator pump, and Two year warranty. You'll get the best performance from any 60 size aircraft with this precision engine. Vertical power, instant acceleration, smooth operation and reliable service are the benchmarks of this thoroughly proven engine.

HP.61F SPECIFICATIONS
Engine Weight: 17.1 oz
Muffler Weight: 3.6 oz
Power: 2.1hp @15,000rpm
Practical RPM's: 2000-16,000
Prop Size: 11x8 --12x6 -- 12x7

HP .61R GOLD CUP ABC or RingedABC or ringed,61 Gold Cup Rear Intake Radio Control #99-2204

The rear intake .61 Gold Cup has more radical timing for higher top speed. Slide carb with accelerator pump provides instant throttle response. Select this engine for top end performance only, radical timing produces less low end torque and idling ability.

HP.61R SPECIFICATIONS
Engine Weight: 17.1 oz
Muffler Weight: 3.6 oz
Power: 2.2hp @15,000rpm
Practical RPM's: 2600-19,000
Prop Size: 11x8 --12x6 -- 12x7

HP .40F GOLD CUP.40 Gold Cup Front intake Radio Control #99-2103

The smallest & lightest of any .40 made today. Not only a top performer, but super reliable. HP's renowned design innovations and RJL's advanced manufacturing abilities make this .40 an unsurpassed masterpiece. • Forged and bushed con rod • Ringed ABC • Schnuerle ported • Double ball bearings • Weights only 9.5 oz. • Extremely high power to weight ratio • Same external size as most .25's

HP.40F SPECIFICATIONS
Engine Weight: 9.4 oz
Muffler Weight: 3.6 oz
Power: 1.2hp @15,000rpm
Practical RPM's:2200-14,000
Prop Size: 10x6 --11x5

HP .40R GOLD CUP .40 Gold Cup Rear Intake Radio Control #99-2104

This is the only .40 rear intake engine that boasts the high performance of a rear rotary valve design with reliable throttling ability. Radical intake and port timing produce fantastic top end with idling reliability only slightly compromised.

HP.40R SPECIFICATIONS
Engine Weight: 9.4 oz
Muffler Weight: 3.6 oz
Power: 1.26hp @17,000rpm
Practical RPM's:2600-14,000
Prop Size: 10x6 --11x5

HP .20 GOLD CUP ABC Radio Control #99-2002

A really hot .20 built to the super precision specifications that made HP famous. Super strong one piece crankcase and, like all Gold Cups, heat dissipating Thermix treatment to all castings. If you want peak performance from a trouble free and proven design, the HP .20 is the one for you. • Forged and bushed con rod • ABC Piston Cylinder • Schnuerle ported • Double ball bearings • Dense, high pressure castings. • Twin Needle Carburetor • O-ring sealed back cover

HP.20 SPECIFICATIONS
Engine Weight: 7.75 oz
Muffler Weight: 2.8 oz
Power: .75 hp @15,000rpm
Practical RPM's:2200-16,000
Prop Size: 9x4, 9x5, 8x6