I seem to recall that one or two of our esteemed board members fly radio controlled aeroplanes. I do too. Swell, eh?
I have up until now, been flying a leetle GWS DH-2 Beaver* with a brushed motor and running off Ni-Mh batteries. Having managed to teach myself to fly on this 3-channel little beauty, I have decided to try my hand at an aileron aircraft. It just so happens that GWS make a lovely little copy of theT6 Harvard, which at £25 without a power system is excellent.
Now, where the point of this post comes in, is that I keep reading about "brushless" motors and "Li-Po" batteries. I'm frankly bewildered as to what on earth I should be buying. I've just about manged to work out what size brushless motor and associated speed controller I need (here
), but when it comes to the batteries, I haven't a clue. It's gibberish.
So, can anyone explain to me in a brief idiot's guide what all the stuff in the battery names mean? E.g. HiModel 1300mah 3S 11.1v 20C (26.0A) Lithium Battery here
HiMODEL 1300 3S 11.1v 20C (26.0A) LITHIUM BATTERY.
Packed with great features, these 20-28C Lithium flight packs from HiMODEL offer very HIGH DISCHARGE rates along with high voltage retention under load. Infact in our extensive tests they out performed packs costing TWICE as much!
As well as the power leads, all Hi-MODEL Lithium packs are fitted with a white 'balancer' type plug allowing the charging and discharging of each cell within the pack. The plug is the 'JST-XH' type which will fit straight into most popular chargers/balancers.
* Type: HM1300 3S 11.1v
* Cont Discharge rate: 20C (26A)
* Burst Discharge rate: 28C (36.4A 10 secs)
* Dimensions: 67 x 35 x 24mm
* Weight: 114g
* Cable: silicone
I get that the milli-amps per hour figure is basically the capacity (i.e. will dictate the length of use you get out of it), but what's the relevance of the voltage, the "20C" figure (is higher better? Does the motor dictate a maximum figure for this?), the amperage and the continuous and burst discharge rates? Basically I want to be able to buy a moderately cheap Li-Po that will work with the motor and ESC without frying them and give a respectable, but not huge, flying time.
Is anyone who knows anything about electricalmabobs able to help Mr Thicky here?