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SL420e
Gyro for
electric flight |
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Current users please note: Revision 4e is very similar to Revision 3. If you are using a small electric helicopter with a Revision 3 gyro, we do not recommend upgrading at this point. If you have been using a Revision 4 gyro in an IC model, and now wish to swap to an electric, please send your gyro back to CSM to have it reprogrammed to Revision 4e: cost £5 for the checkover and return insured postage. From now on, two separate versions of the gyro and gyro software will be available. |
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A gyro for electric helicopters In comparison with
IC powered helicopters, small electric helicopters have very low inertia
making them extremely agile in yaw. However, the micro servos used in
these models are generally no faster than standard size servos (and often
slower). This situation places special demands on the gyro To obtain the optimum performance from the tail system, a fast digital servo is required. Most of the major manufacturers now make these. Model: The SL420e is designed for small electric helicopters such as the T-Rex. For glow and petrol (gas) helicopters, please use the SL420. For very small, indoor style electric helicopters, we would recommend the LG180. Please note: in order to avoid static interference in belt driven models, please use an anti-static spray on the drive belt. RC System: The wiring is compatible with JR, Futaba, Hi-Tec, Graupner, Spektrum and the current style (blue plug) Sanwa/Airtronics transmitters. If you wish to use the SL420e with any other make of radio, please check with the service centre in your country, or email CSM's technical support on tech@csm-ltd.co.uk The gyro requires an auxiliary channel with travel adjustments to control the gyro mode/gain. It cannot be used with basic RC systems that lack such a channel. We recommend that you use an RC system that also provides travel adjustment on the rudder channel. Most current production computer RC transmitters have these facilities. Servo choice: The SL420e can be used with either a digital or a conventional servo. However, we strongly recommend that flyers of T-Rex and similar models use a small, fast digital servo. Batteries, power consumption and wiring: Due to its two stage power supply regulation, the SL420e will accept a supply voltage range of 4.1v to 7.2v. Please note that your RC system may be more restrictive. If you haven't used a CSM SmartLock gyro before, these are some of the features which might be new to you: Quick Setup: Quick Setup is a simple routine which gets the gyro up and ready to fly. You enter it by toggling the gain switch back and forth whilst the model is on the ground. You then set the Gyro Sense, Digital or Conventional servo and Servo Travel Limits using your transmitter sticks. The gyro will also automatically pick up your stick centre and information about your radio gear. Quick Trim: Quick Trim is a simple method of correcting for any small linkage errors. Toggle the gain switch five times whilst in flight, and the gyro will correct the trim. Please do not use stick trim when flying the SL420e gyro as it may cause the stick centre information to become inaccurate. Dual Mode switching: Two modes are available: SmartLock and Standard. SmartLock is an enhanced version of heading lock, whilst standard has the characteristics of a conventional gyro, but with Yaw Rate Demand to allow for fast turns at high gyro gain levels. The gyro gain channel is used to control these modes - the gain switch switches between the two modes, and the travel adjust (ATV) of the gain channel is used to adjust the gain in each mode. Optional digital servo support: In Quick Setup, the gyro can be set to work with either digital or conventional servos. |
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All our products are distributed worldwide through RC Models Distribution Ltd, and should be available from your local model shop or mail order company. To find your nearest stockist see the RC Models shops page, phone (+44) 161 929 5955 or email sales@rcmodels.org |