A few weeks ago I had the opportunity to assemble and fly the 50" red Waco from Dynam. As most of you will know Dynam is an economy or budget range of models and for the price, I believe they are an excellent range of models. They all fly very well. I will be the first to say their quality is perhaps not to the same standard as Flightline RC or Freewing, but then neither is the price. Anyway, back to the Waco.
I've always liked bi-planes and the Waco has a certain appeal and is quite an aerobatic machine. The proportions look right and I believe if it looks right it will fly! The model is a typical Dynam model. The servos are all installed as is the motor and the ESC. The model assembles quickly and can be ready to fly in a couple of hours. Before I started to assemble I tested all the servos and centered them. I connected the aileron servos to the ailerons before I fitted the wings to the fuselage. This is a personal preference and I believe it is easier to make adjustments to the pushrod to obtain the correct length.
The landing gear is simply attached to the bottom of the fuselage with the screws provided and foam infill glued over the top of the cross piece to continue the round shape of the fuselage. The cabines (center struts) are screwed to the fuselage with screws and reinforcing mounts are fitted to the inside of the fuselage for this purpose.
The vertical and horizontal stabilizes both had slight warps in them, which I corrected with the warm water treatment. The vertical stabilizer is glued to the horizontal and the assembly is attached to the rear of the fuselage with screws. The elevator and rudder pushrods are then attached to the control horns and the control throws adjusted.
Incorporated in the wings are lights together with the wires which lead into the fuselage and then connected to a spare channel of the RX. The bottom wing is simply attached to the bottom of the fuselage with the bolts provided. It's now time to fit the interplane struts and the top wing. It's at this point you will discover if you have the cabine struts the correct way round. If everything is looking good the top wing will simply line up with the cabine struts and the interplane struts and then secured with the screws. Please NOTE DO NOT use loctite to secure the small nuts and screws together. They fit through plastic parts and loctite will crack and break the plastic. As loctite drys out it expands in the threads to secure the nut and as it does so it also expands in the plastic and this is what makes it break. No form of thread lock is required. This is an electric model and it will have very little or no vibration to cause the nuts to come loose.
All that is left to do now is to add the RX and balance the model. My model balanced perfectly with the battery slightly forward and I have the RX behind the battery. At this point, I carried out a throttle/motor calibration and lastly, the prop can be fitted and secured with the domed nut.
I'm flying the model on the recommended 4s 2200mAh battery and this will provide a flying time of between 4 and 5 minutes depending on the type of flying you are doing. The model will take off and land very easily and it's what I call a no drama model, there are no unpleasant surprises. It will loop, roll, 4 point roll, fly inverted and perform snap rolls with ease.
It's a delightful little model with great aerobatic capability.
Martin.
I've always liked bi-planes and the Waco has a certain appeal and is quite an aerobatic machine. The proportions look right and I believe if it looks right it will fly! The model is a typical Dynam model. The servos are all installed as is the motor and the ESC. The model assembles quickly and can be ready to fly in a couple of hours. Before I started to assemble I tested all the servos and centered them. I connected the aileron servos to the ailerons before I fitted the wings to the fuselage. This is a personal preference and I believe it is easier to make adjustments to the pushrod to obtain the correct length.
The landing gear is simply attached to the bottom of the fuselage with the screws provided and foam infill glued over the top of the cross piece to continue the round shape of the fuselage. The cabines (center struts) are screwed to the fuselage with screws and reinforcing mounts are fitted to the inside of the fuselage for this purpose.
The vertical and horizontal stabilizes both had slight warps in them, which I corrected with the warm water treatment. The vertical stabilizer is glued to the horizontal and the assembly is attached to the rear of the fuselage with screws. The elevator and rudder pushrods are then attached to the control horns and the control throws adjusted.
Incorporated in the wings are lights together with the wires which lead into the fuselage and then connected to a spare channel of the RX. The bottom wing is simply attached to the bottom of the fuselage with the bolts provided. It's now time to fit the interplane struts and the top wing. It's at this point you will discover if you have the cabine struts the correct way round. If everything is looking good the top wing will simply line up with the cabine struts and the interplane struts and then secured with the screws. Please NOTE DO NOT use loctite to secure the small nuts and screws together. They fit through plastic parts and loctite will crack and break the plastic. As loctite drys out it expands in the threads to secure the nut and as it does so it also expands in the plastic and this is what makes it break. No form of thread lock is required. This is an electric model and it will have very little or no vibration to cause the nuts to come loose.
All that is left to do now is to add the RX and balance the model. My model balanced perfectly with the battery slightly forward and I have the RX behind the battery. At this point, I carried out a throttle/motor calibration and lastly, the prop can be fitted and secured with the domed nut.
I'm flying the model on the recommended 4s 2200mAh battery and this will provide a flying time of between 4 and 5 minutes depending on the type of flying you are doing. The model will take off and land very easily and it's what I call a no drama model, there are no unpleasant surprises. It will loop, roll, 4 point roll, fly inverted and perform snap rolls with ease.
It's a delightful little model with great aerobatic capability.
Martin.
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