ORIGINAL: dolstinske
Thanks guys, I think I have been to concerned about weight, this is good advice. I think another reason to start with some cheap packs, since I am new to this, I may make a mistake or two, so no sense frying a $300 pack...
I wonder how the Hacker would work with 5 cells. Since my next plane will probably be 2 meter, I'm sure to go to a 10 cell motor, and I could use the five cell packs again?
Dale
Dale . .
Just follow what is recommended and you shouldn't make mistakes. Frying packs is actually not that easy to do. You would have to do something REALLY wrong. It's important to size a pack for your application using reasonable "head room" in your calculation, the wiring must be adequate gauge to handle the current (what is supplied with the LiPo and ESC is usually more than adequate), make sure your ESC is set to low voltage cut-out, and use a GOOD charger, as overcharging is a killer (see this vid
http://vimeo.com/2284976 . . this was done in a controlled situation by a modeller friend who flies all electric stuff AND is an electronics engineer)
The recommended Hacker will work on 5S, BUT . . it will need a MUCH larger prop . . maybe around 19 or 20" (as the RPM's will be reduced by about 1500 off the top). The Angel doesn't have the ground clearance for this.
A friend of mine has rewound his motors to optimise performance . . but I wouldn't recommend that. It does require some skill and expertise. e.g. as I remember ??? . . removing a couple of winds will increase the kV (revs per Volt) and allow the use of 15 or 16" props on 5S. NB. NOT recommended unless you know what you are doing.
Cheers, JB