Hmm, need to reply to this one too.
1. I personally think that the BEC idea for a ship this size is a bad, bad,
idea. BECs generally are not designed to serve power for more than 3 or 4
servos. Less if using digitals or micros. I trust that your Pike would
have more than that. Also, BECs are part of the motor controller. Should
something nasty happen to the controller, you simply lose the entire ship in
a spectacular and agonizing manner. I found that there was no way to
adequately balance my Artemis without using the RX pack as balance weight in
the tailboom (about 16 inches behind the wing!) A receiver pack is the
safest way to go. Weight is important, but reliability is much more
important to me.
2. LI-ION or Li-Poly are really cool. Really expensive too. Not real small
in form factor. They may not fit into your ship. Not as cost effective as
the GP2200 or similar. Also, they don't come out nice and warm for those
cold days :) High amps are hard to come by on those things, you will likely
be drawing 60 or 70 + with the Aveox. Don't want to do more if you want to
use it for a while.
Lee
----- Original Message -----
From: "Tord Eriksson" <[EMAIL PROTECTED]>
To: <Soaring@airage.com>
Sent: Monday, November 14, 2005 6:44 AM
Subject: [RCSE] Re: LMR motor for Pike Superior
On Monday 14 November 2005 12.37, Jim wrote:
1) I want to run this plane on 10 cells so as to keep the weight
down. Am I better off running the F12LMR or the F7LMR with 10
cells? What are the pros and cons?
The biggest boost is using Li-Ion power instead, as
they weigh much less - get a high-amp-proof Li-Ion pack,
a Li-Ion-approved controller (Hackers with BEC are nice) and
the smaller motor :-)!
Unless it is too light, then by all means the bigger motor -
generally, bigger motor = slightly higher efficiency! But higher weight,
lower climb, so it isn't sure you win with a bigger motor!
Tord
PS Aveox with Hacker, rocks :-)!
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