Graham Bowers Posted June 23, 2023 Share Posted June 23, 2023 Self hand launch with a 2200 3S is a decidedly dodgy affair, with some rapid return-to-earth events!. Next size down I have is 1000 3S so a bit small. Following a successful launch, it flies and lands wonderfully. What are others using please, or put another way, what's the "sweet spot"? I'd prefer not to have yet another size of LiPo to manage, but I find myself avoiding flying it, which is a shame. Right handed Mode 2 flier. Not sure I'd manage a southpaw launch 😉 Quote Link to comment Share on other sites More sharing options...
Shaun Walsh Posted June 23, 2023 Share Posted June 23, 2023 19 minutes ago, Graham Bowers said: Self hand launch with a 2200 3S is a decidedly dodgy affair, with some rapid return-to-earth events!. Next size down I have is 1000 3S so a bit small. Following a successful launch, it flies and lands wonderfully. What are others using please, or put another way, what's the "sweet spot"? I'd prefer not to have yet another size of LiPo to manage, but I find myself avoiding flying it, which is a shame. Right handed Mode 2 flier. Not sure I'd manage a southpaw launch 😉 Is there much voltage drop when you open the throttle up, would you benefit from a higher C rated battery? Have you considered catapult launching? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted June 23, 2023 Share Posted June 23, 2023 4s 1500 for me, no problems with launch! tried it with 3s, massively underpowered imo. Quote Link to comment Share on other sites More sharing options...
EvilC57 Posted June 23, 2023 Share Posted June 23, 2023 Gaoneng 1550mAh 4S lipos for me. You have to update the ESC though from 30 to 40A. Several have done the 4S update in our club, and they go like stink! Quote Link to comment Share on other sites More sharing options...
Learner Posted June 23, 2023 Share Posted June 23, 2023 1 hour ago, Graham Bowers said: Self hand launch with a 2200 3S is a decidedly dodgy affair, with some rapid return-to-earth events!. Next size down I have is 1000 3S so a bit small. Following a successful launch, it flies and lands wonderfully. What are others using please, or put another way, what's the "sweet spot"? I'd prefer not to have yet another size of LiPo to manage, but I find myself avoiding flying it, which is a shame. Right handed Mode 2 flier. Not sure I'd manage a southpaw launch 😉 I do Underarm launch with 3s 2200 30c no problem, not unlimited vertical but get good 5 min flights not at consistent full throttle Quote Link to comment Share on other sites More sharing options...
Graham Bowers Posted June 23, 2023 Author Share Posted June 23, 2023 1 hour ago, Shaun Walsh said: Is there much voltage drop when you open the throttle up, would you benefit from a higher C rated battery? Have you considered catapult launching? Drops to around 11.4 Volts after around 5 to 10 seconds on full throttle. Overlander 35C, not had much hammer. I'll try it with some other lipos I have. Catapult is a possibility, I'm just benchmarking at the moment. 1 hour ago, Ron Gray said: 4s 1500 for me, no problems with launch! tried it with 3s, massively underpowered imo. 47 minutes ago, EvilC57 said: Gaoneng 1550mAh 4S lipos for me. You have to update the ESC though from 30 to 40A. Several have done the 4S update in our club, and they go like stink! Seems to be a pattern developing for 4S 😉 Quote Link to comment Share on other sites More sharing options...
Graham Bowers Posted June 23, 2023 Author Share Posted June 23, 2023 2 minutes ago, Learner said: I do Underarm launch with 3s 2200 30c no problem, not unlimited vertical but get good 5 min flights not at consistent full throttle Thanks. Quote Link to comment Share on other sites More sharing options...
Learner Posted June 23, 2023 Share Posted June 23, 2023 1 minute ago, Graham Bowers said: Thanks. Cg a bit forward with that battery so put a servo next to elevator servo for rudder conversion which helps and allows a slighttly better flight envelope( more accurate vertical, knife edge etc) Quote Link to comment Share on other sites More sharing options...
John Lee Posted June 23, 2023 Share Posted June 23, 2023 CNHL 100C 1300 3S does it for me. I also use these on the Arrows Hawk & T33. All have the Arrows vector gyro set for self levelling for launch which guarantees 100% clean get always & it’s then switched off for flight. Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted June 23, 2023 Share Posted June 23, 2023 (edited) 1300/1500 3S for me. Easy hand launch at full throttle, aim for flat, very slight up - no dip and if trimmed ok, it'll fly hands off for plenty long enough ... I too am a right handed Mode 2 flyer. (tried my Viper on 4S, and tbh, didn't think it was any more fun to fly......) P.S. neither my Viper or Hawk have gyros. Edited June 23, 2023 by GrumpyGnome Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted June 23, 2023 Share Posted June 23, 2023 IMHO, Its important to launch firmly but accurately, so flat to slight up and slightly body side on underarm chuck. Has to be left hand as right hand has the throttle cut (ready to launch, switch throttle cut off and then chuck) and thumb with full up and ready to correct any role with the ailerons. The alternative is put a RX in with gyro and safe. Safe on, full power and lob...once fling straight and level, switch safe off and commence fun Quote Link to comment Share on other sites More sharing options...
Trevor Posted June 23, 2023 Share Posted June 23, 2023 3s 1500mah for me. Loops easily from level flight, so not what I would call underpowered. I do though use a gyro on launch (Eagle Tree Guardian, 3D HH mode) so that I can give it a good chuck with my right hand, knowing that it will assume the pre-defined attitude, avoiding the need for a frantic grab of the stick. I turn the gyro off as soon as I have both hands on the transmitter. Quote Link to comment Share on other sites More sharing options...
GBG Posted June 23, 2023 Share Posted June 23, 2023 Flew mine for a long time on 3s 2200 with no problems but it was set up that by pushing a button on my X20S it gave a small amount of up elevator for launch. Once flying moving the control stick returned the elevator to normal position. I have this setup on my Arrows Hawk as well. It is now flying on a 4s 1800 using the supplied ESC as is my Hawk with no problems but they are very fast on 4s. Quote Link to comment Share on other sites More sharing options...
Keith Billinge Posted September 16, 2023 Share Posted September 16, 2023 2 or three of us have this model at our local club and it seems that 2200 3S is do-able but puts the wing loading quite high, so easy to get it wrong and stall the wing. I currently fly mine on 1500 3S but I have ordered some 1500 4S batteries to try. The weight is still well below a 3S 2200 on either option. KB Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted September 16, 2023 Share Posted September 16, 2023 Personally, I prefer the way it flies on 1300/1500 packs. I tried 2200s but didn't think the 30 seconds extra flight time was worth the more difficult launch, and overweigh feel in flight. I've upgraded the esc on mine to use 4s 1500s, but tbh I use the 3s packs mostly.... Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted September 16, 2023 Share Posted September 16, 2023 I do wondewr at a 100/200c rating. For a 1500mAh battery that would be 150A/300A. I appreciate the higher figure is a burst rate, say 10 seconds? Nevertheless the 100c 'constant' rate would fully discharge the battery in 36 seconds. The burst rate in only 18! It does rather show how unrealistic these claimed c rate figures can be. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted September 16, 2023 Share Posted September 16, 2023 1500 4s for mine. Quote Link to comment Share on other sites More sharing options...
EvilC57 Posted September 16, 2023 Share Posted September 16, 2023 1550mAh 4S Gaoneng for me. Flight time around 3 minutes. Quote Link to comment Share on other sites More sharing options...
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