Phil Robinson

My selection would have to be electric and about 40""wingspan 1     Fokker E111 Eindecker 2    Harrier 3    Auster

Hi Steve               I must admit that I too tend to rely on your method of testing thrust  but for once I just hung the model on a digital fishing scale to get a feel for what it relates to in grams. Thanks for your help and advice Regards Phil

Hi Steve              my Emax came from Hong Kong, cheap, and very fast delivery considering . It is fitted in a little high wing trainer at the moment.               The other night I tried the motor using different props mainly APC type I checked the current on all the applications and got to the point where a 9 X 5 GWS prop gave the best results. It pulled a max amp at about 14A and gave a thrust at approx 680g. OK the thrust measurement may not be accurate but all the tests were done in the same way so it would give a good indication of whats happening with the different props. I will have to get a selection of smaller props and see what they measure up at. Regards Phil

Hiya people                        once again thanks for your input, what my next move will be is to conduct a little test with the set up  I have but with as many different props as I can. I think the moral of this story is " Don't believe all you read " Oh, and you guys may have "whattmeters" but I have a "watts up meter" and it probably tells me the same information as yours does but whatever the meter is called it is definitely the best bit of kit that I have bought so far Thanks again Regards Phil Robinson

Hi Steve               on full throw of the throttle its pulling 18 to 19 amp and the spec on the motor rates it at  16amp max for 60 sec., hence my reason for trying to limit the max current plus the bonus of extending the duration. Regards Phil Robinson

Hello again people                                   what can I say but a big thankyou for your speedy responses and valued advice and information, the ideas floating around in my head seem to  be right  but you kind people have just confirmed them for me which is very reassuring.......( my partner is always telling me I think too much and am too cautious ) but as we all know the easiest thing to do with a model aeroplane is to trash it.  Once again people Thankyou for your help Regards Phil Robinson

Hello people                       I am a born again modeller after a 25 year absence only this time I am going electric. and here is the first of many ( no doubt ) problems that I would like your help with if you wouldn't mind. I have put together a a power pack that consists of a cf2822 outrunner motor a 25A esc and a 1500mah 15C li-po battery. According to the motor spec it will run with a 10x5 prop at 10A and give approx 600+g of thrust , which on testing is true ( tested using a watts up meter } the problem I have is that the stick on the transmitter is at about 70% of travel when running at 10A, and so it will definitely go faster but with more power usage. What I would like to happen is that when the throttle stick is at full travel I would like that position to be my 10A  max. Now all you clever people out there how do I do it ? Thanks