herm
Posts: 63
Joined: 5/24/2005 From: , FL, USA Status: offline
|
You already bought the motor?, it seems to me that 4 cells is too low, Hobby Lobby calls this a 5-7 cell motor.. it will fly well but with a kind of anemic (in my opinion, many people would be satisfied) climb rate.. your setup is around 500 watts. Bump up the prop to a 16*10 E apc, this will boost power to 630 watts, 45amps and about 60 watts per lb.. even better go to 5 or 6 cells and a 800-1000 watts. Your esc can handle up to 6 cells so that is the limit, good choice of esc btw. 4 cells, 33amps, 14*10 prop, 475 watts at 50watts per lb 4 cells, 45amps, 16*10 prop, 630 watts at 65watts per lb 5 cells, 48amps, 15*8 prop, 820 watts at 80watts per lb 6 cells, 44amps, 13*8 prop, 920 watts at 90watts per lb 6 cells, 49amps, 14*7 prop, 1000 watts at 100 watts per lb two 3 cell packs would give you versatility, you could use each pack individually in a 40 class plane, or both of them in the TM I dont know about the 425 charger.. can it do 5-6 cells (otherwise it will limit you in the future)?..if not consider the hyperion chargers or the astro 109.. instead of the pcm charge guard get the more versatile hyperion lba6 balancer/charge guard.. it will stop the charger if any cell goes overvoltage and also balances the pack, and it plugs into the battery you are considering. I own one and it gives me peace of mind when I charge my packs while I am sleeping. It is a better deal than a pcm charge gard. 400-500watts is about the power of a sport 40 glow engine (old K&B ringed 40), about what the senior TM was originally sold for.. very gentle. Herm
|