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Revision 4 upgrade The SL range of gyros is now on Revision 4. If you wish to have your gyro upgraded, the cost is £12 including postage. Send your gyro to PO Box 101, Glossop, SK13 5ZW, with a cheque or credit card details. If you are outside the UK, or need further details, please contact us at tech@csm-ltd.co.uk . You will also receive new PC interface software - please note that this software only works with Revision 4 gyros. Lost your manual or PC software? Download Manuals: ...... Full Size ...... Micro ...... PC interface manual If you have lost your PC software or would like to download it rather than using a disk: Download PC software for Revision 4 for LPT and USB interfaces Download
PC software for Revision 3.2 Self extracting .zip file. Extract to
C:/SL560 at the prompt.
CLICK HERE FOR TIPS ON GETTING THE MOST FROM YOUR CSM SL560 GYRO SL560 GYRO SETUP FOR RAPTOR 50 SL560 GYRO SETUP FOR HENSELEIT 3DNT Recently upgraded from Revision 3? Revision 4 was developed to respond to new developments in 30+ size models. Users of small electric models may find the default settings inappropriate; we recommend you use the PC interface to put the Heading Lock gain down to approx. 26, and the acceleration gain up to 180. For those familiar with the Revision 3 gyros please note that as part of the revised code many of the internal parameters have been rescaled so it is not possible to make direct comparison of internal parameter values between Revision 4 and earlier versions. The technique for equalising left and right stops has also been changed. Please refer to the following notes. Stop
equalisation We find that good
tail performance is obtained with 45 degrees of right tail pitch and 35 During the initial
flight carry out the Quick-trim procedure, adjust the gyro gain to the
maximum that gives no wagging and assess the quality of the left and right
stops from fast pirouettes (i.e. full stick). If there is a marked difference
note which stop is the softer. After
the flight, switch the gyro into Mode 0 (conventional, non-heading lock
mode) and compare the left and right pitch throws at If the softer of the two stops is acceptable for your style of flying then it will be satisfactory to simply reduce the throw to soften the harder stop. To soften the stop from right hand pirouettes reduce the available left pitch and to soften the stops from left-hand pirouettes reduce the available right pitch. If you do this via the Quick-setup remember to repeat the Quick trim procedure on the following flight. If you adjust the throw via the PC interface the Quick-trim value will be preserved. If the softer stop is unacceptable you will need to increase the available tail thrust. Check if more pitch throw is available in the appropriate direction. If there is change the throw limit to make it available. If no more pitch is available the simplest way to increase the tail thrust is by fitting longer tail blades. This increases the tail rotor disk area, the tail blade area, and the tip speed so a 10% increase in blade length will raise the available tail thrust by about 30%. Please remember to check that the longer tail blades do not touch the main blades. If you cannot increase the length of the tail blades, try increasing their chord. Once the softer of the two stops is satisfactory the equalising the two stops can be done by adjustment of the throw limits as described above. Generally this will be all that is required to obtain matched stops from all speeds. However if stops from more modest speeds of about 180 deg./s show some left-right imbalance then these can be matched by use of the stop tracking controls via the PC interface.
The gyro will not enter the Quick-Setup routine The gain is probably too low - increase the gain for both modes to 100% for now, and return them to the desired setting later. Remember also to turn off ATS (revo) mixing. The model pirouettes violently as soon as it starts to lift off The gyro sense has been set incorrectly. Check that the servo operating sense has been set correctly - when you put in a left turn command, the leading (fatter) edges of the tail rotor blades should point right. If this is not happening, change the servo reversing of the tail rotor channel in your transmitter. Then repeat Quick Setup to set the gyro sense correctly. The tail wags from side to side in the hover Reduce the gyro gain, using the ATV/travel adjust on your gain channel The model flies fine in one gyro mode but wags in the other You have too much gain in just the one mode. Reduce the gain on the mode that wags. The tail response is not crisp enough Increase the gyro gain. It is best to increase it gradually, until you see the tail start to wag, and then reduce it again until the wag stops. The model wags even when the gain is very low The problem is probably with the linkage - check that the linkage is not suffering from slop or friction, and that the tail hub bearings do not lock up under load. You should also check your servo. A slow servo or a very short servo arm may also cause this problem. In mode 1, the model slowly rotates Carry out the Quick Setup again, so that the gyro can sample an accurate stick centre value. Remember to keep the stick trims centred, and not to touch the sticks or the model during the power up time. The model hovers well in mode 1, but rotates in mode 0 Repeat the Quick Trim procedure. Even in calm conditions, the model suffers continuous small movements of the tail. It sometimes appears to drift. The problem is most likely to be caused by vibration. Check that the wires leading to the gyro are properly supported - a long stretch of flapping wire may cause the gyro to move too much, and an over-tight anchorage may prevent the anti-vibration mount from working correctly. An alternative cause for this problem is fluctuating engine torque. The model flies fine on the first flight, but after a while the tail starts to wag Fast gyro and servo combinations can run down the battery. Cycle the receiver battery and check its performance. You should consider using a fast Delta-peak charger to top up the battery between flights. The model was fine last season, but now the tail wags Check that the tail control linkage moves freely, paying especial attention to the pitch slider and the tail hub bearings. The receiver battery may have developed a high internal resistance - cycle the battery and check the capacity. The capacity may seem normal at low discharge rates but drop suddenly at say 3 amps. The left and right hand stops are not equal. On one side the stops are slow and on the other they are bouncy. Carry out Quick Trim, and make adjustments to the linkage if necessary (see the manual for details). See the stop equalisation section above. If the problem continues, use the PC interface to adjust the left and right stop gains. If the problem still does not go away, reduce the servo travel limit for right pitch if the stops from left hand turns are bouncy, and reduce the left pitch travel if stops from right hand turns are bouncy. I am running a high gyro gain, but the stops from high-speed pirouettes are still too slow. The maximum available tail thrust is too low. The best ways of increasing the tail authority are: increase the pitch range of the tail; change the tail gear ratio to increase the tail rotor rpm (only possible on some machines); increase the length of the tail blades. Caution: when increasing the tail blade lengths, check that there is still sufficient clearance between the tail blades and main blades. If you cannot increase the tail blade length, then increase the chord of the tail blades. The model twitches erratically and violently in yaw. If you are using a belt-driven tail, then the problem is probably static electricity. If this problem is not sorted, then it may cause damage to the electronics on your helicopter. An anti-static spray on the belt is the easiest solution. It is also possible to get grounding systems which ground the electricity safely. If you are still having problems, or would like any advice about improving the performance of your gyro and helicopter, please contact us: email:
tech@csm-ltd.co.uk
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