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View Full Version : STC Battery, and speed controler


SchnuppeR
03-16-2006, 05:04 AM
HEy i built the STC http://www.rcgroups.com/forums/showthread.php?t=354237
And i was looking at some brushless setups i was wondering how much run time i would get with this battery. http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKRR8&P=0

Tailspin Ken
03-16-2006, 08:08 AM
Hmmm you would probably fly for about two weeks on one charge! Seriously, that battery would be severe overkill. First of all, the battery weighs more than the plane. You will end up with a plane that weighs 14 or 15 ounces. It could be hard to balace at the CG. You might have to add more weight to the plane to get it to balance.
These are just my opinions. I can't offer you any real facts or figures as I am new to lipos .
I fly my STC on 7.4v 1250mah lipos. Check them out at www.commonsenserc.com (http://www.commonsenserc.com). Someone else will no doubt offer you more factual and more technical information.

Ken

Steve
03-16-2006, 01:22 PM
Dude...that battery is HUGE for the STC. I say no way.....

I wound up with a small Himax outrunner with a 2cell 1250 lipo and an 8040 prop and I thought it was a great combination.

Later I put a BP-21 on it with a 3cell 1250 and a 1047 prop and it was way overpowered....but fun 'cause I rigged it up for combat with another friend that built the same plane. A mid air at a relatively high speed ended its stellar flying career, but that plane is high on my list as a great trainer and a really fun plane to fly.

I liked it with less dihedral. It's hard to loop and roll with the stock angle. Other mods:

Reinforce the nose with very thin light ply.

Run a strip of light ply along the bottom of the fuse from the nose down to the bottom of the plane...kind of a skid plate.

Move the landing gear forward. In its present position it's almost impossible to avoid nose overs when landing. I got in the habit of catching the plane by the wing instead of landing on grass or driveway. Less wear and tear on the fuse and wing tips.

Have fun!

SchnuppeR
03-16-2006, 06:28 PM
How much did your powerplant cost?

ForestCam
03-16-2006, 09:41 PM
How much did your powerplant cost?
I've seen BP-21s as low as $15

Search around the for sale forum, someone was selling them at a pretty good price a little while back and may have a few left.

Tailspin Ken
03-17-2006, 07:24 AM
SchnuppeR,
Look at www.rchotdeals.com (http://www.rchotdeals.com) They have the BP 21 motor and esc combo for $30. Does not get any better than that. If you already have an esc, the motor by itself is $14. I have purchased from them and they are a good company.
Ken

ForestCam
03-17-2006, 06:39 PM
SchnuppeR,
Look at www.rchotdeals.com (http://www.rchotdeals.com) They have the BP 21 motor and esc combo for $30. Does not get any better than that. If you already have an esc, the motor by itself is $14. I have purchased from them and they are a good company.
KenThat's a good price right there! I paid $50 shipped for the same thing a year ago.