If its the 1:72 Carol Moran, remember that it is only 18" long. Prop size will depend on the space available under the stern, probably max out at 30mm, and, for torque, 3 or 4 blades. The larger size I mentioned was for the larger (30" long) boat.
Similarly, there is a size limit on the motor to actually fit into the hull and allow room for the prop shaft and coupler and leave room for the battery. Typically, the motor diameter should be more than the prop diameter, but gearing can make this up by allowing a small, high revving motor to swing a relatively large prop. It can also make for a more compact installation, especially if the motor is mounted to the prop shaft. A RE280/1 should do the job.
Having decided on your boat, it would be a good idea to google it for any build logs - it always pays to look at one that is known to work.
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Topic: 2.4ghz 4 channel tx off a Helo (Read 9429 times)