Gary Murphy 1 Posted July 26, 2011 Share Posted July 26, 2011 Just turning a wot4 classic ic into a electric. Guys here have done this i see and use 4s packs. The KV on that was 660kv apx and 13x8 prop. The thing with mine is i have 5s packs from a heli i want to use.And the 66o kv motor 4120/14 i have been told will not like 5s packs. The kit manual staes a weight of 5 - 5.5 lbs,not sure what it will be when completed,say 5 - 6. Do not need a rocket ship at tyhe moment so can anyone give some advice please? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 26, 2011 Share Posted July 26, 2011 I think you could probably use the 660Kv on 5s...but you will need to use a smaller prop than if it was on 4s. The advantage is that run times will be longer as less current will be used. Quote Link to comment Share on other sites More sharing options...
Richard Wood Posted July 26, 2011 Share Posted July 26, 2011 Gary, The weight of my newish Mk3 with a 5S, 4000 is much the same as the Classic on 4S I put in the database, at about 5lb 6oz ready to go. The extra weight of the 5s over the 4s has eliminated the noseweight and Rx battery needed in the 4S model to get the CG location correct. Quote Link to comment Share on other sites More sharing options...
Gary Murphy 1 Posted July 26, 2011 Author Share Posted July 26, 2011 Richard ,thanks for the info.Had no idea a database was here,just found it. I am still a bit concerned on what way to go being new.Run big prop or small. It looks like the popular motor is 4240/10 for the 4s but i was told it will fry with 5s. I was recommended a 4460/6 for 5s but its 500kv and1375 watts! and to use a 14x6 prop. This will be used to learn with using bud box system so i do not need out right power i am a novis.Trying to use the 5s packs i have as made motor choice a bit harder. I do not know what do for the best. Quote Link to comment Share on other sites More sharing options...
NigelH Posted July 26, 2011 Share Posted July 26, 2011 With that sort of weight you'd be good with less than half that wattage. Smaller prop = less power output = more flight time Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted July 26, 2011 Share Posted July 26, 2011 Posted by Gary Murphy 1 on 26/07/2011 18:59:18:Richard ,thanks for the info.Had no idea a database was here,just found it. I am still a bit concerned on what way to go being new.Run big prop or small. It looks like the popular motor is 4240/10 for the 4s but i was told it will fry with 5s. I was recommended a 4460/6 for 5s but its 500kv and1375 watts! and to use a 14x6 prop. This will be used to learn with using bud box system so i do not need out right power i am a novis.Trying to use the 5s packs i have as made motor choice a bit harder. I do not know what do for the best. Gary,I have already told you that you could use that motor if you prop down. Motors only "fry" if you exceed their current rating, and it may well overload on 5s IF you use the same prop, so prop down a bit, and use a wattmeter to keep the motor within its limits.Theres no reason why the Wotty wont fly fine on say, a 13 or 14" prop. Edited By Tim Mackey - Administrator on 26/07/2011 19:27:11 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted July 26, 2011 Share Posted July 26, 2011 I struggled to get ground clearance on our patch of grass with a 14" on my Wotty, you might want to just check how much room you have. Anyway sounds like you will have to go much smaller on the diameter to keep the smoke in. CheersDanny Quote Link to comment Share on other sites More sharing options...
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