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Radio Gear How to avoid Interference. 1/ The first consideration when installing your Receiver into your Electrically Powered Model is to make sure it is well away from the Negative Battery terminal, and the Motor. The Magnetic field can cause stuttering and Servo twitch interference at times of high current draw (i.e., Fast Acceleration) 2/ Make sure the Ariel tube is long enough for the Ariel wire. The tip of this wire is highly sensitive and should be as high, and as far away from the Motor as possible (yup, its that magnetic field prob again) 3/ If all else fails, a simple tip that often works for all RC Model enthusiasts is to wrap the receiver in Aluminium Foil, to shield against any magnetic and external radio interference. 4/ As a last resort, to protect against servo twitch, try ferrite beads. (available at Radio Shack or Maplins) These are threaded over the red, white (or yellow) and black wires of each servo. |
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Bearings How to get the best out of your bearings. In this section I will endeavor to pass on a few hints and tips that (if you are serious about your racing) could just give you the edge over your competition. My own experience is in both Off and On Road, National and International Car racing, but most of these tips could be useful to all forms of RC. 1/ Shields: The main problem with shields is friction, the more you can reduce friction the more efficient the bearing, so here's a tip that does just that. Wheel Bearings always come in pairs, side by side. If you think about it the two inside shields on each bearing aren't needed, so ... remove them, using a small jewelers screwdriver ... simple, and in one fell swoop you have halved your wheel bearing friction. 2/ Cleaning: All Bearings need to be cleaned from time to time. Depending on how focused and competitive you are, this can be as often as after each meet, or once or twice a year ... For Club Meetings once or twice a year might be all you need if you are easily beating your competition, but for the BIG meets you need that extra 5% or 10% just to be up with the rest. What you need is a small glass jar, a jewelers screwdriver, an old tooth brush and some Isoproponol. Remove the shields, then drop the bearings in the jar, add some Isopropanol, pop on the lid and shake well. Empty them out, give them a good brushing and make sure they spin free then repeat the process. Clean the shields separately. Once you are satisfied, lay them on a piece of kitchen roll and allow to dry. 3/ Lubrication: The arguments I have had about what lubrication to use you wouldn't believe. Some of the top racers of my day swore they didn't use any at all, but cleaned out the original lubrication and ran them dry ... they also admitted to fitting a new set after each meeting ... well, they were getting them for free. My tip is, yes even with a new set of bearings, clean out the original lubrication (as described above) and with one shield in place use the thinnest oil you can find ... I recommend ZX1 (Zed Ex One) or sowing machine oil. Never use grease!! |
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