34% Planes Plus Extra 300 balance
08-25-2005, 12:54 AM
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34% Planes Plus Extra 300 balance
Hey everyone. Just got the first 2 flights on mine with a DA100 and mufflers(not canisters), Fuchs 27X10, True turn spinner and hardware that came with the kit.
I am having to add a bunch of weight to the tail to get the balance point 8" behind the leading edge. Am wondering if anyone else has this problem. The elveator servos are in the tail, 2 rudder servos and pullpull under the canopy. Built according to directions.
I can add the weight and order a lite backplate for the spinner. All batteries are as far south as possible. Could do a push/pull arangement with the rudder but like the pull pull better.
Thanx in advance.
ed
ps, for those that know me, I didn't do in AirCombatCanada colors!
I am having to add a bunch of weight to the tail to get the balance point 8" behind the leading edge. Am wondering if anyone else has this problem. The elveator servos are in the tail, 2 rudder servos and pullpull under the canopy. Built according to directions.
I can add the weight and order a lite backplate for the spinner. All batteries are as far south as possible. Could do a push/pull arangement with the rudder but like the pull pull better.
Thanx in advance.
ed
ps, for those that know me, I didn't do in AirCombatCanada colors!
08-25-2005, 08:15 PM
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RE: 34% Planes Plus Extra 300 balance
Your balance problem is what I would expect with a 6 lb motor like a DA or 3W.
I have seen several of these planes balance just fine (batteries on the wing tube) with 4.3 lb motors (ZDZ-80, BME-100). They required no additional weight because the tail is very light (nice for a change). For your setup, I would either put the rudder servos in the tail, the batteries in the tail, or add 6-7 ounces of tail weight (lead ballast or a solid steel incidence or stab rod). I use the 4:1 ratio to come up with the amount of tail weight required. 6-7 ounces will not be significant to the wing loading.
I have seen several of these planes balance just fine (batteries on the wing tube) with 4.3 lb motors (ZDZ-80, BME-100). They required no additional weight because the tail is very light (nice for a change). For your setup, I would either put the rudder servos in the tail, the batteries in the tail, or add 6-7 ounces of tail weight (lead ballast or a solid steel incidence or stab rod). I use the 4:1 ratio to come up with the amount of tail weight required. 6-7 ounces will not be significant to the wing loading.
09-12-2005, 02:21 PM
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RE: 34% Planes Plus Extra 300 balance
what did you do end up doing to get the plane to balance??
thanks
tony
ps- would a zdz 80 be enough motor, or is the da100 the best choice??
thanks
tony
ps- would a zdz 80 be enough motor, or is the da100 the best choice??
