Post by rcrallyfan on Dec 27, 2008 12:46:50 GMT -5
Assuming you have checked and set up your servos properly, made sure your radio operates them as expected, the brakes engage, the throttle returns to closed, and the wheels turn as required, it is time to give your engine a try. Also remember to upgrade the junk stock air filter. You could damage your engine within 30 minutes of dusty driving with the stock black-box "filter". I have seen such things happen.
Before you pull the recoil, it is a good idea to place the car on a stand, box or something similar to ensure all wheels are off the ground and the model stable. For example, my buggy would have taken off right away, as the idle was set far too high in the factory. So, having put some fuel mix in the tank, pressed the pump on the carb repeatedly until the fuel filled the return line without air bubbles, placed the car on a stand, it's time to pull on the starter... My buggy engine was quite eager to start on the third pull or so, and I then adjusted the idle screw and let it idle for a while to warm up. There was and should be no need to touch the carb setup screws at this point. Then, still on the stand, I increased rpm until the clutch engaged and I let it spin like this for a while to break in the plastic gears. Then I took it off the stand and started driving it around, but delicately at first, never opening the throttle more than half way and avoiding abrupt jerky acceleration... I would recommend treating it lightly at least for the first full tank (to break in the engine), then you can gradually rev it higher on the subsequent tanks.
UPDATE: I took the buggy for its second drive today, and the 30 cc engine now starts on the first pull, quite impressive really.
Before you pull the recoil, it is a good idea to place the car on a stand, box or something similar to ensure all wheels are off the ground and the model stable. For example, my buggy would have taken off right away, as the idle was set far too high in the factory. So, having put some fuel mix in the tank, pressed the pump on the carb repeatedly until the fuel filled the return line without air bubbles, placed the car on a stand, it's time to pull on the starter... My buggy engine was quite eager to start on the third pull or so, and I then adjusted the idle screw and let it idle for a while to warm up. There was and should be no need to touch the carb setup screws at this point. Then, still on the stand, I increased rpm until the clutch engaged and I let it spin like this for a while to break in the plastic gears. Then I took it off the stand and started driving it around, but delicately at first, never opening the throttle more than half way and avoiding abrupt jerky acceleration... I would recommend treating it lightly at least for the first full tank (to break in the engine), then you can gradually rev it higher on the subsequent tanks.
UPDATE: I took the buggy for its second drive today, and the 30 cc engine now starts on the first pull, quite impressive really.