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RCGF 26ccBM Operator's Manual
(note: the spare parts list and dimension of engine are in the end of manual)
RCGF 26cc BM
Parameter:
Type : 2 cycle piston valve type gasoline engine for airplane
Piston displacement Cylinder (cc) : 26cc (1.60cu.in)
Bore x Stroke (mm): 1. 3 in(34mm) x 1.0 in(26mm)
Carburetor : RCGF
Ignition : RCGF DC-CDI (Computer Controlled auto advance, electronic ignition system)
Power supply: 4.8-8.4V
Maximum Output : 2.95HP /2.2KW
Requires: Gasoline, 2-cycle oil, ignition battery & propeller
Speed rang : 1500-9800rpm
Gasoline-Version : Pre-mixed Fuel, 25-40 (Gasoline):1 , Recommend:30:1
(90% high otcane unleaded gasoline, Import gas into carbon fiber installations valves)
Lubrication Oil : 2 cycle engine oil
Propeller : 18X8 7000rpm (Standard Two leafs prop)
16X8,16X10, 17X8,17X10,18x8, 18x10
Suggested Propellers:
Sparking plug: NGK CM6 Type
Cooling System : Air Cooled
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Table of Contents
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Summary of Contents for RCGF 26ccBM
- Page 1 Piston displacement Cylinder (cc) : 26cc (1.60cu.in) Bore x Stroke (mm): 1. 3 in(34mm) x 1.0 in(26mm) Carburetor : RCGF Ignition : RCGF DC-CDI (Computer Controlled auto advance, electronic ignition system) Power supply: 4.8-8.4V Maximum Output : 2.95HP /2.2KW Requires: Gasoline, 2-cycle oil, ignition battery & propeller...
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Page 2: Spare Parts List
RCGF engine package Includes: electronic CDI ignition, muffler, spark plug, gaskets, bolts, throttle arm extension & manual. Weight : Engine: 1.65 lb (748 g) Muffler: 2.5 oz (70g) Ignition Module: 4.4 oz (125 g) Total: Weight: 2.07 lb (943 g) Technical Data: Ignition Battery: 4.8-8.4 NiCd or NiMH, 6.6V LiFe or 2S LiPo pack... -
Page 3: Safety Tips And Warnings
Safety Tips and Warnings ● This engine is not a toy. Please place your safety and the safety of others paramount while operating. RCGF will not be responsible for any safety issues or accidents involving this engine. ● Operate the engine in a properly ventilated area. -
Page 4: Installation Instructions
● To avoid permanent damage to the electronic ignition system, never rotate the propeller on your RCGF engine with the electronic ignition system switched on and the plug not installed in the plug cap. - Page 5 Before beginning installation it’s a good idea to plan location of the various components of the engine. Many of the following steps may need to be completed in a different order than listed. 1. Check to see that all screws and bolts are tight. Check carefully for any cracks, broken, or missing parts.
- Page 6 3. Connect the kill switch lead to the red connector from the ignition control module using the lead from the kill switch or with the included three pin connector with pig tail. Use one of the included three pin securing clips to secure the connection. 4.
- Page 7 9. Install the spark plug into the engine head (6-9lbs torque). Installing the RCGF 26cc BM on Your Airplane Note: The RCGF 26CC BM must be installed on at least a 8mm firewall. The firewall must be securely glued to the airplane. Use triangle stock and pin the firewall with hardwood dowels to reinforce the firewall glue joints.
- Page 8 line to be used as fill line. Installing a third line is the cleanest and easiest way to add fuel. An alternative fueling set up is a 2-line system with a T-fitting approved for gasoline use. Be sure to use a filler plug with either a 2 line or 3 line set-up. It is a good idea to add an extension to the vent line as shown, that goes up and to the rear of the tank.
- Page 9 8. Once the throttle servo is installed it’s a good idea to deactivate the throttle return spring with a pair of needle nose pliers. Gently grab the spring and remove it from tension on the throttle lever. Deactivating the spring will remove the load or stress on the throttle servo.
- Page 10 12. Cut all necessary clearance, carburetor adjustment, cooling, and exhaust holes in the cowl. A 1:3 ratio of airflow intake area to airflow exhaust area is recommended for proper engine cooling. 13. Make sure the cowl is secured to the airplane and that the knurled thrust washer protrudes from the cowl by at least 3.4mm [1/8”].
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Page 11: Install The Propeller
Install the Propeller 1. It is recommended that you test-run, tune, and break-in the engine before flying. To make this easier we recommend that you remove the cowling. 2. Set the engine near the beginning of the compression stroke. Note the position of the ignition magnet with the engine inverted. - Page 12 3. Place the spinner back plate on the engine and the propeller on the crankshaft at the one o’clock position. 4. Install the prop washer and 8x1.25mm adapter nut on the crankshaft.
- Page 13 5. Install the spinner cone. Be sure to use thread locker on the spinner bolt. Adjustment of the Engine Each RCGF Engine has been factory preset. However, differences in elevation will influence the performance of the carburetor. To obtain optimum output of the engine, slight adjustment of the carburetor may be necessary.
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Page 14: Idle Adjustment
1. Choke Control (the choke control should be used when the engine is cold) 2. Throttle 3. Idle Adjustment Screw (adjust the idle speed) 4. (L) Low-speed Needle (adjusts the fuel/air mixture at low speeds) 5. (H) High-speed Needle (adjusts the fuel/air mixture at high speeds) Idle Adjustment Turning the Idle Adjustment Screw clockwise will increase the idle speed. -
Page 15: Ignition Timing Adjustment
Ignition Timing Adjustment The ignition timing is preset on the RCGF26cc at 28-30° before Top Dead Center (TDC). The ignition timing can be advanced or retarded by loosening the ignition sensor Phillips head screws and sliding the sensor to the full extent clockwise (32° advancing the ignition) or counter clockwise (26°... -
Page 16: Starting Procedures
There are two recommended ways to start the RCGF26cc: A. Manual Starting Note: When hand starting the RCGF 26cc, use a thick glove or heavy duty starter stick to protect your hand. 1. The propeller should be installed on the drive washer at the one o’clock position and at the beginning of the compression stroke so that it’s comfortable to flip it through... -
Page 17: Engine Troubleshooting
necessary (see Adjustment of the Engine). 8. If your engine does not start, repeat steps 2-7. Engine Troubleshooting If your engine fails to start after the preceding starting procedures please check the following. Symptom Diagnosis Charge or Ignition battery replace battery voltage low Battery wires faulty Replace wires or... - Page 18 Many of the RCGF Ignition modules have an additional lead to plug into the Digital Tachometer. If your ignition module does not have this additional lead, the Digital Tachometer can still be used. Simply use the Y-harness (included with the Digital Tachometer) to connect to the pick-up lead from the engine.
- Page 19 carburetor filter gasket. Use only carburetor cleaner to clean the opening around the filter...
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Page 20: Warranty Information
If you need carburetor spare parts please contact our service center on local. Warranty Information The RCGF-26 has a two year limited warranty through RCGF service center beginning at the date of purchase. Please retain your receipt as your proof of purchase.