The new Ryobi 31cc (1.8 ci) converted string trimmer engines by Jag Engines. are the perfect answer to your low cost big scale R/C airplane needs.  They are light, powerful, compact, very easy to run and extremely durable.  The engines are made in Chandler, AZ (about a million a year) and parts are readily available.  They will fly planes from 11 lbs. to over 23 lbs. depending on wing loading using props from 16" to 20".  They can be easily started using a standard 12 volt Sullivan or Hobbico type starters with no need for the spring type starter or heavy duty electric starter.  Ryobi’s are very economical to operate using only about 16 oz of 40:1 gas-oil mixture for over 30 minutes of flight time.  Several California R/C Marathon planes using standard Ryobi 31cc engines have flown for over 5 1/2 hours covering more than 240 miles non-stop on ½ gallon of gas!

 Construction of the Ryobi engine includes a hard chrome cylinder bore with a pinned piston ring, twin rod needle bearings and two ball bearings supporting the crankshaft.  A pointless ignition system and a rear pumper type carburetor with a stainless reed valve round out the engine's features.  The converted engine weighs 58 oz ready to mount on your firewall plus muffler.  Because the muffler and the carburetor are at the rear of the engine it lends itself to a very compact installation, particularly in planes that have narrow cowls.  The investment cast aluminum heat treated motor mount is only 4" in diameter at the firewall and the engine is only 3" wide.

 Propellers used can be from 16 x 8 to 20 x 6.  The smaller APC 16 x 8 props will turn up to over 8,000 RPM. The larger props will turn as low as 5,500 RPM.  This engine has a lot of torque and will handle the larger props just fine.  The idle is very low and transition to high speed is very smooth. A standard 12 volt airplane starter will get the engine running right now.  There is no need for a heavy duty starter or a spring type unit.

 Jag Engines converts these engines ready to mount on your airplane for as low as $178.00 plus shipping.  They also make conversion kits for those that want to convert their own Ryobi engines for as low as $56.00 plus shipping.  Two after-market mufflers are offered plus many parts and kits. Most major credit cards are excepted.

 Click here for the FREE conversion instructions.

  Click here to email JAG Engines

  Jag Engines
  16073 Muscatel
  Hesperia, CA 92345
  (760) 244-7270

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