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Swedish_Pilot
08-08-2008, 02:31 PM
Hi!
I've got a Flair SE5a kit which I'm going to build, and I'm seriously thinking of using an electric motor instead of a glow engine.

Does anyone have any experiences of this kit and which motor etc. one should use if converting it? Which things are good to keep in mind?

Thanks in prehand!
/S_P

WWI Ace
08-09-2008, 09:46 PM
If you know about what the all up weight of the plane will be and measure on the plans from the firewall to the cowl opening you'll get really close. When you measure either use millimeters or convert to millimeters. All the outrunners anymore have their diameter and length in their sizing. Somewhere like www.hobbylobby.com (http://www.hobbylobby.com) or the cheaper www.hobbycity.com (http://www.hobbycity.com) usually also tell how many pounds of plane each motor can handle. They also give ESC and battery recommendations. Remember to use a lower Kv (between 700 and 1000kv is usually best for bipes) motor so you can fly a larger prop and be more scale!! If you need any more help please ask!! Steve

Sky Sharkster
08-09-2008, 10:10 PM
Hello /S_P,
Steve has some good advice. Biplanes and slower-flying models generally use a low-Kv, large prop combination.
Is this the model you have?
http://www.flairmodels.co.uk/Aircraft/Scouts/SE5A.htm
If so, here's a couple of motor recommendations;
http://www.e-fliterc.com/Products/Default.aspx?ProdID=EFLM4046A
http://www.hobby-lobby.com/brushless-axi2826.htm
These motors also have ESC, battery and prop suggestions.
I don't know where to buy these motors in Sweden, but they are sold in the UK. Birmingham Model Centre carries E Flite and Puffin Models has AXI.
http://www.wattflyer.com/forums/showthread.php?t=14117
Scroll to Electric Motors, Manufacturers + Distributors.
Good Luck!
Ron

WWI Ace
08-09-2008, 11:07 PM
Thanks for the extra help Ron!! I just hope that we helped him!! I know that when I converted from glow to electric I had NO idea of what to do!! Luckily, Hobby Lobby and sites like this helped to speed up the learning curve. Steve

Swedish_Pilot
08-10-2008, 08:40 AM
Thank you Ron and Steve!

Your advice was most helpful!!!

You're right, it is this model: http://www.flairmodels.co.uk/Aircraft/Scouts/SE5A.htm

I haven't yet started the constructions, but I will consult the sites you recommended and try to order online or buy a suitable engine here in Sweden.

As this particular Scout is quite small, do you reckon that it could be used as a parkflyer, if equipped with an electric motor?

Best regards,
S_P

Sky Sharkster
08-10-2008, 12:13 PM
Hello S_P,
I'm glad our suggestions could help, good luck with the model.
That model is much too large, heavy and powerful to fly in any park, or at least any park I've ever seen.
Generally, "Park Flyers" are less than 1 meter span, weigh about 1/2 kilo and fly slowly. The smaller 3D aerobatic models, GWS type of sport models and lightweight scale models would be examples.
I suggest you contact an area flying club or go to the closest R/C field to see what types of training program they offer, and also check out the size of the field. I believe you will find it's much safer to fly there.
Here are a few sites that should help you find a club or flying site;
http://www.modellflygforbund.se/t2.aspx (Swedish Model Flying Federation)
http://www.ivyandmartin.demon.co.uk/page2.htm
http://tmfk.org/
http://www.gardstad.se/
http://www.hobby.se/
http://www.algonet.se/~bkm/
Ron

Swedish_Pilot
08-11-2008, 02:57 PM
Thanks for the links and the info!

I've been active in some clubs before, but the club fields aren't located near me unfortunately, so therefore I'm more interested in electric/park flyer solutions. There are a lot of other parks, fields etc. near my home, and if the electric motors doesn't make too much noise I guess it would be possible to fly even quite near residential areas. I reckon that the electric motors suitable for the SE5a won't make too much noise?

Maybe it is a silly question, but what kind of free space radius could a plane like the SE5a need? I've got the Parkzone Spitfire too, and according to its manual "It is essential to have a minimum of 300 feet of
clear space in all directions from the pilot." Then how about the SE5a?

If using the motors you recommended with the necessary acks, what kind of flight times could one expect?

Regards,
S_P

Sky Sharkster
08-12-2008, 11:37 AM
Hello S_P,
According to the E Flite 46 site, with a 4s3p 6000mAh pack and a 13 x 8 prop, the duration should be 12-20 minutes with throttle management. Using a 4s2p 4200 mAh pack, it's 6-15 minutes, depending on throttle use.
Unless the parks in Sweden are a lot different than in the US, I can't recommend flying a 5-6 pound model there. This plane is twice as large and several times heavier than any "Park" flyer! It will cause a real safety issue.
Here we have joggers, kids, bikes, baby strollers, dogs and soccer, baseball games, etc. An accident could cause serious injury or worse. It wouldn't have to be "Pilot Error". it could be be battery failure, electrical problems, radio "glitch" or any number of other factors.
For this size and weight model I strongly suggest you use your best judgement about where and when to fly it. You will need an airspace 2 or 3 times the size of a normal park, and clear space all around.
Ron

WWI Ace
08-12-2008, 06:02 PM
I agree with Ron!! Nothing will stop your flying quicker than having an accident that turns your whole community against you!! Steve