Piers Bowlan Posted May 1, 2018 Share Posted May 1, 2018 Personally I would buy a programming card like this. It is only a few pounds and save a whole lot of agro trying to change the settings without one. It is from the UK warehouse so will only take a couple of days to arrive. Quote Link to comment Share on other sites More sharing options...
Don Fry Posted May 1, 2018 Author Share Posted May 1, 2018 Thank you, Woowoo, just read the instructions, and have taken Piers advice and a programming card, and as ever other bits and pieces are winging their way. Pity, it was going for launch today, but patience is a virtue.. Quote Link to comment Share on other sites More sharing options...
Andy G. Posted May 1, 2018 Share Posted May 1, 2018 Might it possibly be because you're running the motor up to high revs with it off load, i.e. no prop? Quote Link to comment Share on other sites More sharing options...
Don Fry Posted May 1, 2018 Author Share Posted May 1, 2018 Andy dead right, Genius. Having fitted the prop the problem has gone. Just a bit apprehensive now, as it proposes about 550 watts of power to push 650 grams AUW. And that is not flat out but where I have set the telemetry amp warning. Quote Link to comment Share on other sites More sharing options...
Woowoo Posted May 1, 2018 Share Posted May 1, 2018 Now there’s one for the memory bank(if I can remember where it is!). Though it makes perfect sense now, I would never have thought about that! Paul Quote Link to comment Share on other sites More sharing options...
Nigel R Posted May 1, 2018 Share Posted May 1, 2018 "2826 2200Kv motor, and is on a 4s battery. It has a 40 amp speed controller," what prop are you fitting Don? I measured 390W on a 6x4 on only 3s with that size motor. 4s on the same, for a 1.5lb model sounds barking! Quote Link to comment Share on other sites More sharing options...
Don Fry Posted May 1, 2018 Author Share Posted May 1, 2018 I have invested in one of the Orange telemetry receivers. And onboard flight pack voltage, and amp sensors. The prop is a 6x4. It will draw about 35 amps flat out, stationary, and the prop sounded like it was well stalled. But I have set the lady to shout at me when I go over 30 amps. The motor seems happy, but only for short bursts I suspect. About 20% throttle seems to give respectable launch power. It's quite scary running it flat out. And the Lipo I was setting it up with was at storage voltage, so a bit more ooomfh when full charged In defence, I have installed the exact recommended HK installation, (hot version). Don't have to open the throttle. We will see on Saturday, God Willing, when I will get someone to do the chuck, so I can concentrate on the sticks. This thing has been assembled as something to take on holiday. Considering its small part count it has been out of my comfort zone. Quote Link to comment Share on other sites More sharing options...
Don Fry Posted May 5, 2018 Author Share Posted May 5, 2018 Any way, maidened it today, in a 20kph wind. Went away very nicely on about 20% power, and trimmed it out. It needed some reflex from my initial bench settings, but it was very pleasant to fly, and when I gave the throttle some movement, accelerated swiftly without climb or dive, so I reckoned the CG was about right. Then I opened the throttle. The lady who lives in the transmitter was shouting I was drawing 35 amps, so with a full charge hi spec 4s battery, that's about 550 watts. It moved from left to right like a scolded cat. The controls suddenly became a different ballgame more responsive. And then I heard a control surface flutter. Followed a fraction of a second later with the wing parting in two. The powered half then twirled a high speed, maintaining hight, but I cut the throttle and it sycamores to ground. No damage except it is in two parts. Not a sloppy linkage. I had replaced the supplied rod with a heavier unit, ball link at one end and a tight Z bend on the other. I think Nigel R was right, barking power excess. Onwards and upwards. Edited By Don Fry on 05/05/2018 16:31:28 Quote Link to comment Share on other sites More sharing options...
McG 6969 Posted May 5, 2018 Share Posted May 5, 2018 ... very probably way too much pepper on those mini-tomatoes, Don. Don't 'over-spice' your flying stuff, young man... Cheers Chris Quote Link to comment Share on other sites More sharing options...
Kevin Fairgrieve Posted May 5, 2018 Share Posted May 5, 2018 That will go back together no problem. Mine did the wing clap of death a couple of weeks ago. Some well placed Gorilla Glue and an additional carbon spar and some reinforced tape. A short video of the wing clap can be found here. Kev Edited By Kevin Fairgrieve on 05/05/2018 18:38:37 Quote Link to comment Share on other sites More sharing options...
Don Fry Posted May 5, 2018 Author Share Posted May 5, 2018 Think the tape would work, as the thing pulled itself apart. The glue held, but expanded polypropylene is tough but floppy stuff. But a couple of hundred less watts torturing it would also help. I think, bearing in mind I am not buying Lipo batteries, and certainly not new sizes, I have a bucketful of 1800 3S jobbies. Three quarters the power, a bit less weight. Sounds like a plan. Edited By Don Fry on 05/05/2018 19:38:04 Quote Link to comment Share on other sites More sharing options...
Fatscoleymo Posted May 5, 2018 Share Posted May 5, 2018 Nope, onwards and downwards Don... Fats Edited By Fatscoleymo on 05/05/2018 20:29:49 Quote Link to comment Share on other sites More sharing options...
Andy G. Posted May 6, 2018 Share Posted May 6, 2018 A bit of glue and tape and that'll be as good as new! Mine has looked like that on about 3 occasions now! Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.