The DLE 85 Petrol Engine delivers outstanding single-cylinder performance for giant-scale RC aircraft, combining smooth power delivery, excellent reliability, and exceptional value. Producing a strong 8.5 horsepower at 7,500 RPM, the DLE 85 offers the perfect blend of thrust, efficiency and simplicity, ideal for pilots who prefer the lightweight feel and direct throttle response of a single large cylinder.

To control vibration commonly associated with engines of this size, DLE includes a vibration-dampening engine mount, ensuring smoother operation and reduced airframe stress. The supplied muffler features a flexible exhaust extension that simplifies cowl installation and protects the engine in the event of a hard landing.

With a wide operating voltage range on the ignition module and full hardware included, the DLE 85 is ready to install and fly. Whether powering a giant-scale aerobat, sport aircraft or a large-scale warbird, the DLE 85 offers unbeatable performance and robust construction.

Key Features

• Strong 8.5 hp @ 7,500 RPM single-cylinder performance

• Vibration-dampening engine mount included for smoother running

• Muffler with exhaust extension for easier installation and added engine protection

• Lightweight, efficient design with excellent power-to-weight ratio

• Wide ignition voltage range (4.8–8.4V)

• Compatible with optional DLE tachometer (DLEG5525)

• CNC-machined parts for accuracy and durability

• Reliable operation with smooth throttle response

• Ideal for giant-scale sport, 3D and scale aircraft

Perfect For

• Giant-scale sport aircraft

• 80–100cc aerobatic models

• Large-scale warbirds

• Pilots wanting strong single-cylinder power with reduced vibration

Product Summary

A powerful and smooth 85cc single-cylinder petrol engine delivering 8.5 hp, complete with vibration-dampening mount, muffler with extension, ignition and hardware.

Specifications

• Stock Number: DLEG0085

• Displacement: 84.88 cc (5.18 cu in)

• Bore: 52 mm (2.047 in)

• Stroke: 40 mm (1.574 in)

• Total Weight: 2.31 kg (5.09 lb)

• Output: 8.5 hp @ 7,500 RPM

• Fuel: Unleaded petrol + 2-stroke oil (30:1 mix)

• Ignition Voltage: 4.8–8.4 V (NiCd, NiMH, LiFe, or 2S LiPo with regulator)

• Compression Ratio: 9.5:1

• Replacement Spark Plug: NGK CM6 (DLEG5510)

Weight Breakdown:

• Engine: 1930 g (68 oz)

• Muffler w/ extension: 250 g (8.8 oz)

• Ignition: 130 g (4.58 oz)

Suggested Propellers:

• 25×10

• 26×9

• 27×8

Included in the Box

• DLE 85 Petrol Engine

• Electronic ignition module

• Spark plug

• Vibration-dampening engine mount

• Muffler with exhaust extension

• Engine standoffs

• Gaskets & bolts

• Instruction manual

Why Buy From ProBuild Aircraft Ltd

• ✅ Official UK DLE Stockist – 100% Genuine Engines

• ✅ Trusted by Top International RC Pilots

• ✅ Fast UK Shipping & Secure Packaging

• ✅ Expert Engine Support & Advice

• ✅ Trusted by RC Pilots Since 1993