new to planes and interested

[tooney]

I bought a cheap plane recently and Im trying to figure out if I have the right idea about the motor and prop sizing-also if I have the right battery packs-I dont know the make of the plane I have other than the fact that it is a cub with a six foot wing span and an astro 25 astro cobalt motor-I would apreciate if anyone could tell me what kind of battery power I need to run it it has a 10x6 prop. Any help would be awesome!!

[2NG]

what kind of a Cub is it? who makes it, scratch or you bought it as ARF? maker please:)

[2NG]

Try 10 Panasonic 3000.:)


Motor Cal. config:

In-Flight Analysis - Cub 72" Sea Level, 59°F Motor: Mega AC 22/30/3; 1270rpm/V; 0.032 Ohms; 1.46A idle. Battery: Sanyo 1700SCR; 10 cells; 1700mAh @ 1.2V; 0.004 Ohms/cell. Speed Control: Castle Creations Griffin 50; 0.0011 Ohms; High rate. Drive System: Gp Belt; 14x10 (Pconst=1.06; Tconst=0.95) geared 2.5:1. Airframe: Cub; 720sq.in; 91.4oz; 18.3oz/sq.ft; Cd=0.052; Cl=0.47; Clopt=0.73; Clmax=1.24. Stats: 45 W/lb in; 39 W/lb out; 20mph stall; 26mph opt @ 62% (21:05); 32mph level @ 73% (15:30); 687ft/min @ 17.7°; -211ft/min @ -5.4°. AirSpd Drag Motor Motor Input Output Loss Temp Motor Motor Elect Prop Thrust Prop Time (mph) (oz) Amps Volts (W) (W) (W) (°F) Ef(%) RPM Ef(%) RPM (oz) Ef(%) (m:s) 0.000 0.000 23.0 11.1 254.6 220.9 33.7 117.8 86.7 13001 79.9 5200 49.4 0.003 4:26 1.00 0.010 23.0 11.1 254.6 220.9 33.7 117.8 86.7 13001 79.9 5200 48.9 2.75 4:26 2.00 0.040 23.0 11.1 254.6 220.9 33.7 117.8 86.7 13001 79.9 5200 48.4 5.44 4:26 3.00 0.090 23.1 11.1 254.8 221.0 33.8 117.9 86.7 12999 79.9 5200 48.0 8.07 4:25 4.00 0.159 23.1 11.1 255.0 221.2 33.8 118.0 86.7 12997 79.9 5199 47.5 10.7 4:25 5.00 0.249 23.1 11.1 255.3 221.5 33.9 118.0 86.7 12994 79.9 5198 47.1 13.2 4:25 6.00 0.358 23.1 11.0 255.6 221.7 33.9 118.1 86.7 12991 79.9 5196 46.6 15.7 4:25 7.00 0.488 23.2 11.0 255.9 222.0 34.0 118.2 86.7 12988 79.9 5195 46.2 18.1 4:24 8.00 0.637 23.2 11.0 256.3 222.3 34.0 118.3 86.7 12984 79.8 5194 45.8 20.4 4:24 9.00 0.806 23.2 11.0 256.7 222.6 34.1 118.4 86.7 12980 79.8 5192 45.3 22.7 4:23 10.0 0.996 23.3 11.0 257.0 222.9 34.1 118.5 86.7 12977 79.8 5191 44.9 25.0 4:23 11.0 1.20 23.3 11.0 257.4 223.2 34.2 118.6 86.7 12973 79.8 5189 44.5 27.2 4:23 12.0 1.43 23.3 11.0 257.7 223.4 34.2 118.7 86.7 12970 79.8 5188 44.0 29.3 4:22 13.0 1.68 23.4 11.0 258.0 223.7 34.3 118.8 86.7 12967 79.8 5187 43.6 31.4 4:22 14.0 1.95 23.4 11.0 258.2 223.9 34.3 118.9 86.7 12964 79.8 5186 43.1 33.4 4:22 15.0 2.24 23.4 11.0 258.4 224.1 34.4 118.9 86.7 12962 79.8 5185 42.6 35.4 4:21 16.0 2.55 23.4 11.0 258.6 224.2 34.4 119.0 86.7 12961 79.7 5184 42.1 37.3 4:21 17.0 2.88 23.4 11.0 258.7 224.3 34.4 119.0 86.7 12960 79.7 5184 41.6 39.1 4:21 18.0 3.23 23.4 11.0 258.6 224.2 34.4 119.0 86.7 12960 79.7 5184 41.1 40.9 4:21 19.0 3.59 23.4 11.0 258.4 224.0 34.4 118.9 86.7 12963 79.8 5185 40.6 42.7 4:21 20.0 3.98 23.4 11.0 257.9 223.6 34.3 118.8 86.7 12968 79.8 5187 40.0 44.3 4:22 21.0 4.39 23.3 11.0 257.2 223.0 34.2 118.6 86.7 12975 79.8 5190 39.3 45.9 4:23 22.0 4.82 23.2 11.0 256.2 222.2 34.0 118.3 86.7 12985 79.8 5194 38.7 47.5 4:24 23.0 5.27 23.1 11.1 254.9 221.1 33.8 117.9 86.7 12998 79.9 5199 37.9 48.9 4:25 24.0 5.73 22.9 11.1 253.7 220.1 33.6 117.6 86.8 13010 79.9 5204 37.3 50.4 4:27 25.0 6.22 22.8 11.1 252.0 218.7 33.3 117.1 86.8 13027 80.0 5211 36.5 51.7 4:29 26.0 6.73 22.6 11.1 250.1 217.0 33.0 116.6 86.8 13047 80.1 5219 35.7 53.0 4:31 27.0 7.26 22.4 11.1 247.9 215.2 32.7 116.0 86.8 13069 80.2 5228 34.8 54.2 4:34 28.0 7.80 22.1 11.1 245.4 213.1 32.3 115.4 86.8 13094 80.2 5238 34.0 55.4 4:37 29.0 8.37 21.9 11.1 242.7 210.8 31.9 114.7 86.8 13121 80.3 5248 33.1 56.5 4:40 30.0 8.96 21.6 11.1 239.8 208.3 31.5 113.9 86.9 13150 80.4 5260 32.2 57.5 4:44 31.0 9.57 21.3 11.1 236.7 205.6 31.0 113.1 86.9 13181 80.6 5272 31.3 58.5 4:48 32.0 10.2 20.9 11.1 233.3 202.7 30.6 112.3 86.9 13214 80.7 5286 30.4 59.5 4:52 33.0 10.8 20.6 11.2 229.7 199.6 30.1 111.4 86.9 13250 80.8 5300 29.4 60.3 4:57 34.0 11.5 20.2 11.2 225.6 196.1 29.5 110.5 86.9 13289 80.9 5316 28.4 61.1 5:03 35.0 12.2 19.8 11.2 221.1 192.2 29.0 109.5 86.9 13333 81.0 5333 27.4 61.9 5:10 36.0 12.9 19.3 11.2 216.2 187.9 28.3 108.4 86.9 13380 81.2 5352 26.4 62.6 5:17 37.0 13.6 18.8 11.2 210.9 183.2 27.7 107.3 86.9 13431 81.3 5372 25.3 63.3 5:26 38.0 14.4 18.2 11.3 205.2 178.1 27.0 106.1 86.8 13485 81.4 5394 24.1 63.9 5:36 39.0 15.1 17.7 11.3 199.0 172.7 26.3 104.9 86.8 13544 81.5 5417 23.0 64.4 5:47 40.0 15.9 17.0 11.3 192.4 166.8 25.6 103.7 86.7 13605 81.6 5442 21.8 64.9 5:59 41.0 16.7 16.4 11.3 185.5 160.5 24.9 102.5 86.6 13670 81.7 5468 20.6 65.4 6:14 42.0 17.6 15.7 11.4 178.1 153.9 24.2 101.3 86.4 13738 81.8 5495 19.4 65.8 6:30 Note: This analysis is based on calculations that take motor heating effects into account.