BRAKE PROTECTION FOR YOUR HAM II, III, IV, AND TAILTWISTER ROTATORS. I'm not going to take credit for this. It has been around for years. You can buy one over the net. I looked for some kind of directions or plans for this mod for a long time. I think it was in a magazine in 1980. Anyway I wanted to build my own. It cost me about 7 or 8 bucks. To top it off it is really easy to build. The Rotor manufacturer's instructions caution users to always let the motor coast to a stop before permitting the brake to engage A rotor brake delay can save your rotor from being destroyed. The weight of your antenna can continue to turn your rotor slightly. If your brake engages during this coasting period. Or if your finger slips off the brake button it could be costly. HERE we go. You will be adding the part circled in BLUE THE PARTS LIST K1 is a relay, 24v dc,600ohm coil. I used part # R40-11D2-24 by NTE C1 is a electrolytic capacitor, 1000uF,35v. I used part # NEV1000M35FF by NTE R1 is a resistor, 150 ohm, 1/2 watt. I used HW115 by NTE D1 and D2 are Diodes, 750mA, 600v, 1a, I used part # 1N4005 by you got it. HOW IT WORKS Pressing the brake release and then CCW or CW. D1 or D2 will charge C1 through R1 and hold K1 on which holds the brake off. When CCW or CW is released the power will stop and K1 will continue to hold the brake off until C1 discharges. First press the break release then either CCW or CW. At this point your brake is released and the rotor is turning. Now you can release the break button and continue holding the CCW or CW button. Your antenna is turning and will continue to hold the brake off. Turn the antenna to the desired direction and release the CCW/CW button. You can also hold both like your most likely use to. On my Brake delay the break will automatically engage in about 8 seconds. after installing the delay it would be a good idea if you time the break delay to make sure it's delay is at least 3 seconds. You can change the value of C1 to extend the delay time. If you have a tailtwister control box then you will notice the green brake light will stay on when the break is off and turn off when the brake is on.