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    HMS BRAVE BORDERER
    Getting ready for the maiden voyage after the extensive winter upgrade and stumbled across an article on programming
    Hobbyking ESCs
    . Have always been concerned about the β€œstuttering” of the brushless motors. This is more correctly identified as β€œcogging”, often caused by incorrect motor timing. Changed the timing to β€œAutomatic” from the incorrect previous setting, which was for inrunner motors not outrunners. Now much smoother acceleration from neutral to full speed. On the water, first, the brushed motor centre screw concept works well. It allows controllable maneuvering and powers the model nicely in a displacement mode. No planning, but with a reasonable bow wave. The model weight is a little high, as she rides towards the top of the boot topping. Tried the brushless outer screws and realized my efforts to β€œdetune” the motors were overdone. The model performance was adequate, but still had difficulty in getting both motors to run consistently and smoothly. Think the water drag was slowing the motors more that expected as they had worked satisfactory on the bench. Adjusted the ESC output back to 100% - much better. After 45 minutes of running the battery alarm came on, curtailing trials. She planes very much as the real vessel did, lifting the forefoot clearly out of the water. Had a spare battery, but 3S not 2. Was apprehensive about the increased power this would bring, but as the model was operating satisfactorily decided to try it. Better still! Motors now work consistently smoothly and in concert throughout the throttle range. The top speed exceeds any picture I have seen of the Brave class though. Can readily get a third of the hull out of the water. Will conduct more trails, but need a larger pond to give time to experiment with the various control settings. Hope to post a concluding blog with pictures shortly.
    5 years ago by Rowen


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