Re: PSU's and DC-DC convters or Is There An EE In The House!?
the big one is a Compass 6HV a 600 class (590 to 630mm main blades) and the "small" one is a T-Rex 500 ESP a 500 class (425mm main blades) btw the 6HV i measured using ~3500watts with a peak of 4000watts it weighs in at 3.2kg
lots of fun man but not cheap by any means but dont let that stop you
if you want get in to the hobby get a get mCX2 ~120 bucks comes with every thing and pick up a few extra lipos for it total cost should be around 150
if you think its some thing you really want to do after that pick up as much TX as you can afford and a sim like Phoenix RC at lest get a DX6i or better i fly a Spektrum DX8
feel free pm me if you need any help and check out »www.helifreak.com
also »www.modelaircraft.org/ if you go want to fly some thing 'big' you should join the AMA you can also look up clubs near you most love to have people stop by and watch
next project im saving for will be a Goblin 700 or 770 which swings 700mm to 770mm mains
fun fact since all the cells are in parallel in when setup like that ie pack 1's cell 1 is in parallel with pack 2's cell 1 etc the MORE packs you put on the more the internal resistance of the cells even out and the better balanced all the cells are
lipos also have some nifty tricks do the chemistry of them since the higher the capacity of the cell the lower the internal resistance of the cell AND the internal resistance goes up as function of the voltage
thats the one get the "RTF" itll come with a TX that looks like game controller, 1S lipo and charger that runs on 2xAA you can replace this with a real TX later down the road like a DX6i, DX7s, DX8, DX18
and imo get at lest 2 extra 1S 120mAh packs for it if not 4 or so they dont cost much and you only get ~5min a pack im guessing you already know about not over discharging them so use a timer dont just fly till the LVC you can also get cables to charge the lipos with the charger you have already and do up to 6 at once
nice thing is its small and very stable so you can fly in the living room its not good out side unless its DEAD CALM
and if you do break it you can get parts to repair it
reply to SparkChaser thats a nice local shop wish the one here was that nice your guys even carry Compass i have mail order every thing from Nankin Hobbies they are the US distributor for Compass
let me know how works out send me a pick with your new heli