ukpaul
07-24-2007, 11:08 AM
Got some inflight data graphs to share from my stock 550. Lots of the graphs I see for models (of all sorts) seem to be posted by high power users, which is fine, but I thought some taken by a learner might be usefull for the many of us that just hover around & do a bit of FF, & were curious what sort of current the stock heli draws...
I made one a while ago when all I could do was hover, it draws 12~13A & gave me ~8mins of back yard hovering whilst getting used to a bigger than trex 450 heli.
~70 flights later & I'm doing a lot of FF & nose in stuff & have needed to up the head speed a bit from what straight curves gave me, which was fine for hovering around & slow FF, but seems a bit low now in faster FF & the windy weather. Now using using Idle1 & 2, so thought I would take some more readings to compare between the different modes...
Stock model, 2x2100/2200 lipo's, 0,25,50,75,100 pitch curve in all modes.
Graphs in order are,
1 - Normal mode hover, 0,25,50,75,100 throttle. 8 mins.
Next 3 flights all the same. 'Brisk' FF doing fig 8's with a couple of full power punches to as high as I dare ~100ft?
2 - Normal mode, 0,25,50,75,100 throttle. 8 mins.
3 - Idle1, 0,70,80,90,100 throttle. 6:30 mins.
4 - Idle2, 100,90,100 throttle. 5 mins, could be a bit more.
I fly on Idle1 now & set the timer for 6:30 mins, loosing about 1:30 flight time compared to the same flight in normal mode, but the extra head speed is needed now I'm flying faster & turning harder. Helps keep it more stable in the gusty wind we're having here all summer too. So for now & a while yet, 2100's & the stock motor are still fine for my skills & needs, but I can forsee the need to upgrade to 2x 3300's or suchlike in the future when I can fling it around with a Z30 in it, can't wait :mrgreen:
I made one a while ago when all I could do was hover, it draws 12~13A & gave me ~8mins of back yard hovering whilst getting used to a bigger than trex 450 heli.
~70 flights later & I'm doing a lot of FF & nose in stuff & have needed to up the head speed a bit from what straight curves gave me, which was fine for hovering around & slow FF, but seems a bit low now in faster FF & the windy weather. Now using using Idle1 & 2, so thought I would take some more readings to compare between the different modes...
Stock model, 2x2100/2200 lipo's, 0,25,50,75,100 pitch curve in all modes.
Graphs in order are,
1 - Normal mode hover, 0,25,50,75,100 throttle. 8 mins.
Next 3 flights all the same. 'Brisk' FF doing fig 8's with a couple of full power punches to as high as I dare ~100ft?
2 - Normal mode, 0,25,50,75,100 throttle. 8 mins.
3 - Idle1, 0,70,80,90,100 throttle. 6:30 mins.
4 - Idle2, 100,90,100 throttle. 5 mins, could be a bit more.
I fly on Idle1 now & set the timer for 6:30 mins, loosing about 1:30 flight time compared to the same flight in normal mode, but the extra head speed is needed now I'm flying faster & turning harder. Helps keep it more stable in the gusty wind we're having here all summer too. So for now & a while yet, 2100's & the stock motor are still fine for my skills & needs, but I can forsee the need to upgrade to 2x 3300's or suchlike in the future when I can fling it around with a Z30 in it, can't wait :mrgreen: