Don't assume windy conditions...we are talking regular early AM no-wind launches where blow-back was significant enough to reduce time-in-the-air. It's interesting after a number of monotonous launches utilizing an ALTI to see graphed sink rates start to line up...
It could be debated (no one ides that here -right) that more mass versus higher launches on a no wind/no convective day, but I personally would take the higher launch any day of the week given the L/D efficiencies of currently available airframes. I challenge anyone to prove to me that an extra 20-30g of wiring harness is going to bring down two otherwise identical (and I DO mean identical - if it were possible) airframes under the same flight conditions. Launch height is...launch height... Quoting Michael Lachowski <[EMAIL PROTECTED]>: > OK, my biggest bang for the buck is 5 cell and digitals. I can give up > the dedicated power since it cost me weight in airframe weight as well > as weight extending out the wing. > > Now if we can just get battery mfg to do 20 guage battery packs. > > > Sounds like Don's tradeoff is a good one in overall airframe performance > especially since the launch is such a small part and the only time the > load gets extreme is in windy conditions. > > > > For a typical F3x airframe, in order of importance, the most effective > means of > > ensuring position fidelity¡as it relates to the electrical system: > > > > 1) 5cell NiCD (not NiMH) PWR supply > > 2) Digital servos > > 3) Dedicated PWR/GND from RX buss to motor > > 4) ¡Ý24awg 7 strand lead (circular MIL area of std 7 strand is offers only > > > slightly less R than more expensive lead material w/higher strand count) > > Switch elimination/20awg leads from PWR source to RX buss. > > 5) Switch elimination/20awg leads from PWR source to RX buss. > > > > The estimates you ask about would be different for every installation. > However, > > if you wish to get the best performance under the above conditions, then > > dedicated PWR/GND will hold a commanded servo position significantly better > > > than when it is shared with two or more servos... > > > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and > "unsubscribe" requests to [EMAIL PROTECTED] Please note that > subscribe and unsubscribe messages must be sent in text only format with MIME > turned off. Email sent from web based email such as Hotmail and AOL are > generally NOT in text format > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format
