Alpha Plus 21-BN3PD (Pull Start) .21 Nitro Engine
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Contents:
-Alpha Plus .21 Nitro Engine equipped with Pull Start
(Uses Standard style Glow Plug - Not Included)
Specs:
| Displacement: 3.45cc | |
| Bore: 16.3mm | |
| Stroke: 16.8mm | |
| Weight: 350g | |
| Ports: 3ports | |
| Sleeve: ABC | |
| Crankshaft Diam: 14mm diameter | |
| Glow Plug Type: Standard | |
| Exhaust: Rear | |
Case Material: Aluminum
Static Running-in: Adjust the idle until the throttle is half opened. You want the tires to be in a status between turning and not turning. The opening throttle value is about 1mm width. Run the engine this way for about 250cc in rich tune condition. You can do a couple of heat cycles to accomplish this, heat --> Run a tank or two --> cool --> repeat. Motion Running-In: With throttle power between 50-80%, run the car in a figure “8” pattern continuously at low and medium speed for 2-4 tanks. Remember to check the engine after running out every tank of fuel. The engine temperature should by 195-230F. After the engine cools, loosen the glow plug 2 turns, then use the finger to turns the flywheel 360*, if the flywheel feels stuck or sticky at Top dead center, then repeat this action (Motion Running-In), then run another 1-2 tanks, then check once again. About 500cc on average and the break-in process is completed. |