Jack Banner Posted September 15, 2014 Share Posted September 15, 2014 Yes, it looks like you have the EDF unit installed back to front and the motor running in reverse. Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 15, 2014 Author Share Posted September 15, 2014 I give up. Well that explains everything. Where is the nearest cliff. ........................How is this possible ! Edited By dan c 1 on 15/09/2014 17:37:51 Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted September 15, 2014 Share Posted September 15, 2014 Never mind, we've all done something just as daft..... Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 15, 2014 Author Share Posted September 15, 2014 Mmmm Its the second fan Ive had in AND out. I dont know if it'll survive another round of surgery ... Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted September 15, 2014 Share Posted September 15, 2014 Dont forget if you need to re-enforce the fus, bamboo BBQ skewers are ideal Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 16, 2014 Author Share Posted September 16, 2014 Following corrective surgery overnight the hawk now gives 550 grams of thrust now give or take ..... & only on a 3s battery . I guess it will be more on the 4s!!! .... Thanks for all your help & Advice guys. She might fly on that. Quote Link to comment Share on other sites More sharing options...
Stuphedd Posted September 16, 2014 Share Posted September 16, 2014 on the subject of the fan being at the "wrong " end, I bought a F35 from a pal , who said it would not fly ! he was right !! so I decided to put a more powerfull fan combo in it , It was an ARTF so the fan and servos were all pre-assembled, When I dug the fan assy out , it had been factory built the wrong way round !! Just turning it the correct way had made a fast very flyable little plane . cheers Quote Link to comment Share on other sites More sharing options...
Stuphedd Posted September 16, 2014 Share Posted September 16, 2014 Must admit The HK T45 at our club has a 14 blade fan , and eflite motor and runs on 6 s, and just a chuck , no running, is all you need to get airborne , and it very quiet and fast , very very good. cheers Quote Link to comment Share on other sites More sharing options...
eflightray Posted September 16, 2014 Share Posted September 16, 2014 Getting an EDF in the air ? Perhaps a bigger 'fan', or two Quote Link to comment Share on other sites More sharing options...
John Mccullagh Posted September 16, 2014 Share Posted September 16, 2014 well they do say a picture is worth ect hope you get it to fly now ,let us know how you get on John. Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 16, 2014 Author Share Posted September 16, 2014 Took the T-45 for a try out this eve... From a standing throw it was literally trying to pull out of my hands so I did'nt have to put much effort into launching. Very easy on my own to launch. It really does fly fantastic with the fan the right way round!!!. So ridiculously fast, I had to fly on half throttle tbh just to keep an eye on it. So even on one 3s 2200 battery I had about 8 minutes. Shame as I've gone and ordered a 4s battery which I am thinking will be stupidly uncontrollable now at 14.8v. What great fun. Quote Link to comment Share on other sites More sharing options...
Jamie sawyer Posted September 16, 2014 Share Posted September 16, 2014 Glad it worked out for you Dan. I've always fancied one of these rocket ships... You won't be able to resist that battery when it arrives lol Happy flying Jamie Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted September 17, 2014 Share Posted September 17, 2014 dan c1 Glad it worked. I would indeed be cautious with the 4s. Not only will it be a great deal more powerful (by nearly 50%) but this will be because it will be drawing many more amps, so watch you don't fry the ESC. A Watt meter to check the actual current draw? It will also be heavier so it will have to fly a bit faster as well. My advice would be wait until you are completely confident flying on the 3s before you try the 4s . Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 17, 2014 Author Share Posted September 17, 2014 I think that is a good advice Simon. It's a handful on the 3s. The additional weight will be welcome though as I was having trouble balancing with the 3s. The motor I have is a fair weight so I had to shove the battery way forward As for the Watt meter, is there a cheapy I can get? I have to stop spending money on this hobby !!!! I need to get to grips with this watts thing. No other way to calculate it? After my flight, the batteries were not very warm, maybe slightly more than on the bixler flights but I could'nt get to the phoenix as its inside the fuse screwed in. Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted September 17, 2014 Share Posted September 17, 2014 7 in 1 Meter here - **LINK** Does LiPo Battery Checks, Battery Internal Resistance, Watts, Tacho, Servo Tester,Temperature and others £24.79 @ Hobbyking - but shop around the prices vary hugely - Google "7 in 1 Meter" Quote Link to comment Share on other sites More sharing options...
Stuphedd Posted September 17, 2014 Share Posted September 17, 2014 There is no problem with this little plane on a 6s!! Balances perfectly !! Yes its fast , but perfectly stable and flyable , Just dont pull very high "G" turns ! its flown by a "newbie " who I started to teach last Christmas , and its his only plane !!! That must say something about his abilities . and dont fly electric without checking things with a wattmeter its ESC suicide ! cheers Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted September 17, 2014 Share Posted September 17, 2014 Dan c 1 The one Dave linked to is very good but if you don't want to spend that sort of money I use one of these. £6.98 including delivery! Basic but it does the job. Gives both a continuous reading of Volts, Amps and Watts and stores the peak values of each as well. You just plug it in between the battery and ESC. I bought mine off e-bay with ready fitted male & female Deans connectors (which is what I use) at no extra cost but it now seems at that price you have to solder on your own to suite. Delivery from China can take quite a while too - 6-9 weeks! Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 17, 2014 Author Share Posted September 17, 2014 Maybe I should grab one then. In the mean time, it says the Phoenix 45 has over current protection of 5 levels. Will this not keep it safe for now? Quote Link to comment Share on other sites More sharing options...
Simon Chaddock Posted September 17, 2014 Share Posted September 17, 2014 Dan c 1 I don't believe there is an absolute over current protection for ESCs. Yes they can have thermal cut outs to prevent them getting too hot and two layers of power down to protect the LiPo from being over discharged but an instant current over load will 'blow' one or more of the MOSFETS in the ESC in a millisecond. They act as fuses! Until you have a Watt meter I would stick to 3s until you can test exactly how close to the ESC limit you are. The usual recommendation is not to exceed 75% of the ESC rating. Quote Link to comment Share on other sites More sharing options...
dan c 1 Posted September 17, 2014 Author Share Posted September 17, 2014 Thanks Simon. I will take your advice.I paid a lot for the ESC ,and the rest of it, so I'll stick with the 3s for now until I know what's happening. Quote Link to comment Share on other sites More sharing options...
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