JayCee Posted September 25, 2012 Share Posted September 25, 2012 As a winter project I am building the Flair SE5A. As I would like this to be electric powerd I would be grateful for any information in selecting the correct power train and prop size The model weight without battery is IRO 6lbs many thanks JC Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted September 25, 2012 Share Posted September 25, 2012 hello JC.......simple answer is to go for a 600 watt set up...which will be more than enough...i would have a look at BRC'S site as a starting point....you should be able to get a motor and controller combo for a reasonable price...... ken anderson...ne 1 .... 600 watt dept....... Quote Link to comment Share on other sites More sharing options...
Pete B Posted September 25, 2012 Share Posted September 25, 2012 A 3548 900Kv motor, 60A ESC, 4S pack and a 12x8 or 13x6 prop should put you around the 600 watt mark, JC Pete Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 25, 2012 Author Share Posted September 25, 2012 Thanks for your prompt response . I have a Turnigy .46 (670 kv) going begging which I thought I would try any idea of prop size? This is my first attempt at a traditional build although I have built (sorry assembled) numerous ARTF's Owing to a recent heart operation I'm grounded so I need something to keep me busy for a while. Any suggestions for first traditional build would be appreciated. JC Quote Link to comment Share on other sites More sharing options...
Pete B Posted September 25, 2012 Share Posted September 25, 2012 If this is the motor you mean, JC, my first thoughts are that it might be a big on the big side for the SE5A, both weight- and dimension-wise. The SE5A has a longish nose compared with many WW1 types so you may not need that much weight at the front end. With a span of 51", I wouldn't think you have a lot of space to work - and the battery will need to find some room. Something in the region of 13x6 for the prop? There's always the throttle, of course....... Hopefully someone else can help out here.......... Pete Quote Link to comment Share on other sites More sharing options...
PatMc Posted September 25, 2012 Share Posted September 25, 2012 I agree with Pete that motor seems to big. Have you had a look at this Electric Flight Database ? You should be able to get some idea of what's suitable from that. The Flair Magnattila is comparable for power requirements. Mine weighs just over 6lbs with a Turnigy 3548/900 with 4s 4000, a 60A ESC turning a 12x6 prop. This pulls 31A for 460W at WOT & is bags of power for the model. Average current per flight is 21A which is good for over 10 minutes of aerobatics & stooging around per charge. Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 25, 2012 Author Share Posted September 25, 2012 Thanks all I appreciate all your imput. JC Quote Link to comment Share on other sites More sharing options...
Alan Randall Posted September 25, 2012 Share Posted September 25, 2012 I have recently been given the Flair SE5a kit and was considering looking for a E-flite Power 46 for it. Reading the above, I am starting to think that the Power 32 I already have spare may be suitable. It will be a little while before I get round to starting my SE5 so I would welcome any info/ experience that you can pass on JayCee. Alan Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 25, 2012 Author Share Posted September 25, 2012 Hi Alan Will do. However, not picking up my kit until the weekend so it will be sometime before I'm at the motor stage. Havent checked to see if there is a build blog on this site if not I might start one. JC Quote Link to comment Share on other sites More sharing options...
Alan Randall Posted September 25, 2012 Share Posted September 25, 2012 Hi JC I have had a look around, but all that I have found are glow powered. I haven't had a serious look at the plans yet regarding battery access etc. Alan Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted September 26, 2012 Share Posted September 26, 2012 I built one electric a few years back. It was on 6S A123 and a Turnigy 4240 900kv motor.Cannot remember the prop but was probably around 13" or 14" x 6 Once the wings incidences were sorted it flew well. Cheers Danny Quote Link to comment Share on other sites More sharing options...
Alan Randall Posted September 26, 2012 Share Posted September 26, 2012 Thanks for that Danny. Nice to see the workings. Alan Quote Link to comment Share on other sites More sharing options...
Trevor Crook Posted September 26, 2012 Share Posted September 26, 2012 Mine flies nicely on around 400W - 600W would give Pitts-like performance, although you can, of course, throttle back. The motor is an E-Max (900kV) from Giant Cod/Shark, with a 3s 3000 pack and, I think, an 11x7 prop. I'll try to post some more specific figures when I've at home tonight. Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 26, 2012 Author Share Posted September 26, 2012 Thanks everybody look forward to all the info and pictures you can post! Just shows there is more than one way to skin a cat! From 6S with a 14x8 prop to 3S with an 11x7 prop, now I'm really confused ;-0 JC Quote Link to comment Share on other sites More sharing options...
Trevor Crook Posted September 26, 2012 Share Posted September 26, 2012 OK, a bit more detail on mine. The motor is an E-max 2820/07, and the prop is actually a 12x6 APC clone. From memory, this motor is about 900kv, and pulls just under 40A, giving about 400W. This gives good scale performance for 8 minute flights on 3s 3000 batteries. By all means go for a higher power setup, you can always throttle down more. Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 27, 2012 Author Share Posted September 27, 2012 Hi Trevor/Danny Got my Flair SE 5A kit today just starting to build the front fus section, still scratching my head regarding motor mounting and position, also battery access! Also giving it a quick look there appears to be a lot of down and side thrust how did you accommodate that and get the motor so far forward? Any pictures and advice would be appreciated. Thanks JC Quote Link to comment Share on other sites More sharing options...
Pete B Posted September 27, 2012 Share Posted September 27, 2012 Found this club build blog when I was looking earlier. it's an IC installation but the build pics may be of some help.........at least it turns a plan into something meaningful! Pete Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 27, 2012 Author Share Posted September 27, 2012 Thanks Pete Actually found that blog today and it helps a lot. Tend to forget the Flair SE5A kit is about 20 years old , long before Lipo's and Leckie power became popular so have been unable to unearth any electrical conversion blogs. it may become clearer as the build progresses, still hoping for some detailed pictures in case I can build the firewall with thrust angles at an early stage JC Quote Link to comment Share on other sites More sharing options...
Alan Randall Posted September 27, 2012 Share Posted September 27, 2012 Danny looks to have got the motor installation right Jc. It appears to have side thrust and down thrust built in. I presume he is using the front mounting points on the motor fastened to a bulkhead behind the radiator moulding. Perhaps Danny could comment for our enlightenment Alan Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted September 27, 2012 Share Posted September 27, 2012 Hi Chaps, not a very impressive method that I used I am afraid. I bought the airframe second hand and it had the conventional hardwood rails that you would expect. I made a bulkhead and mounted it true to the rails to maintain the thrust lines. using good quality aircraft ply and a strong epoxy. Not really proud of the engineering but it did mean it could be easily removed and converted back to IC if I sold it (which I did) Hope that helps? Cheers Danny Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 27, 2012 Author Share Posted September 27, 2012 Thanks Danny Now it all becomes clear, was wondering weather to instal the hardwood rails but now I realise that will give me my down and side thrust angles. Hoping there will be room for a 4000mah 4S Lipo! How did you fix the battery access cover? Thanks for all your help JC Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted September 27, 2012 Share Posted September 27, 2012 Hi JC the cover was alligned with the fus by using a couple of tabs glued to the bottom of the cowl. The exhaust was attached to the cowl and came off with it. Everything was secured using rare earth magnets. I always use magnets to hold covers on, even big warbirds, have never lost one yet....... Hope this helps Cheers Danny Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 27, 2012 Author Share Posted September 27, 2012 Thanks Danny Have to work this build in with a few other projects, so it won't be particularly quick but will keep the thread going with updates. Thanks for your help. JC Quote Link to comment Share on other sites More sharing options...
JayCee Posted September 29, 2012 Author Share Posted September 29, 2012 Hi Any thoughts on this as the motor http://www.giantshark.co.uk/epower-2832-960kv-brushless-outrunner-motor-p-51.html The Turnigy .46 is as you rightly said is going to be to big also have a spare Hacker A30 10XL nice motor but only rated at 28amps! The problem with the conversion is fitting a fire wall in place of the IC rails the fire wall position is to a large extent determined by the motor size there is a large amount of down and side thrust so really want to get it right first time! JC Quote Link to comment Share on other sites More sharing options...
Alan Randall Posted September 29, 2012 Share Posted September 29, 2012 Hi JC Have you got your wheels yet. If not have you seen This Alan Quote Link to comment Share on other sites More sharing options...
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