Roger Cox 1 Posted June 25, 2015 Share Posted June 25, 2015 I have the Turnigy 22260 3000Kv 650W motor (EDF OUTRUNNER) with a Turnigy Trust 70A SBEC and I'd like to fit it to a 10 blade fan unit and fly my Durafly Sea Vixen. Can I ask what the maximum battery 'size' I can use ? Thanks Roger Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted June 25, 2015 Share Posted June 25, 2015 I cant find a motor of that identity on the HK site, and when I use motor finder looking for motors between 2900 and 3100 KV with at least 650W output it only shows me the 2836D motor **LINK** Quote Link to comment Share on other sites More sharing options...
Frank Skilbeck Posted June 25, 2015 Share Posted June 25, 2015 I'm guessing that it's this motor http://www.hobbyking.co.uk/hobbyking/store/__17231__Turnigy_2226_3000_70mm_EDF_Outrunner_.html which is rated at 40 amps on a 4s battery therefore you need a 4s battery which will be capable of 40 amps at WOT. That will determine the minimum sized battery, the maximum will be whatever will fit in the airframe, bearing in mind that too heavy will make performance worse. The spec for the Sea Vixen say a 3300 mah 4s. Are you planning to change the fan unit in the Sea Vixen to the 10 blade unit, if that's the case then you'll need to see what the fan supplier recommends keeping the amps below 40 amps which is what the motor is rated for. Quote Link to comment Share on other sites More sharing options...
Dave Hopkin Posted June 25, 2015 Share Posted June 25, 2015 If that is the correct motor Frank Identified, then the Max Voltage "size" you can use with it is a 4S cell (nominal 15v) The capacity "size" doesnt matter as far as the electrical system is concerned, the impact of putting a bigger capacity battery in will be an increase in all up weight but a (potentially) longer duration flight (though that maybe an illusion due to the increase in weight means you will have to fly a little faster so empty the battery faster!) The other limiting factor will be the phycial size battery compartment / Access, too bif a cell and it phycially may not fit - you can get the dimensions of LiPo from the HK website If you change the fan and put one with more blades in you will increase the loading on the motor which will draw more current to compensate, this may prove too much for your motor (if it goes above 40Amps) and of course a higher current draw will shorten your flight times Swings and roundabouts y'see Quote Link to comment Share on other sites More sharing options...
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