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View Full Version : MACSBOOST Flying around!



supermac
01-17-2010, 01:50 PM
Check it out.
http://www.youtube.com/watch?v=HG2uRRRkC5g

here is a nice long video for everyone. This flight was with a single 2200 mah battery. I need to measure the current draw to get a better idea of flight times. I would estimate that the battery still had around 50-60% of capacity left.

I think I am going to add some foam noodles around the motors for landing gear. I've crashed it quite a few times but the soft ground has saved it. I've had the motor mounts pop off but Its an easy fix with the rubber CA. I did have a motor shaft break off at the circlip groove on the bottom side. I guess thats just poor QC. Good thing I bought a spare motor.

Feliksayk
01-17-2010, 02:16 PM
Hey that's a nice flight. If you have caps installed on your sensors, you should increased the P's even further as I can see it is a little loose. Also, what is your TX factor in that video? and motor-to-motor distance & weight? :)

I also noticed that when I yaw, it complies but then still wants to return and hold the previous direction. It generally works but you'd have to constantly input yaw commands. Maybe there is a glitch in the yaw heading hold.

supermac
01-17-2010, 05:10 PM
No battery, 760grams
w/ single 2200 lipo battery 938grams

motor center to center is 64cm

RCvertt
01-17-2010, 10:56 PM
...here is a nice long video for everyone...That looks really good there!

Mikro
01-18-2010, 09:25 AM
Wow! That's great you kept your weight under 1kg, your flight times must be phenomenal! With respect to motor mounts... what do you guys think about welding the motor mounts to the tubes? I'm thinking of looking at some inexpensive gas welder that won't burn through these tubes.

Good call on extra motors. I recently made some purchases from Hobby King and out of 8 motors 1 of them was bad. I guess the great prices comes at the cost of poor quality control.

supermac
01-18-2010, 01:06 PM
You could braze it together. There is some aluminum brazing rod. Try that, because you wont be melting through the aluminum and you can do it with a torch. If you really want to weld, What you need is a nice DC tig welder, not a gas one. I where I work, our welders can weld together soda cans with them.

If you get a chance, I really suggest building one from the 600mm carbon tube from hobbyking and gluing the 1/2" C-channel to the arms. Its simple, lightweight and plenty strong.

supermac
01-19-2010, 12:28 AM
I timed the quad today. 11:00 minutes on a single 2200 mah 30C battery.

Feliksayk
01-19-2010, 12:36 AM
I timed the quad today. 11:00 minutes on a single 2200 mah 30C battery.


Did you count every second of flight time? (well, +/- 10sec accuracy?) I'm asking because when I count the time, I have the entire session video taped and then I count it very accurately. Also, what is your overall weight? Thanks.

supermac
01-19-2010, 02:00 AM
938grams
11 min 10 seconds. takeoff to touchdown

luwe
01-19-2010, 03:17 AM
Flight lookin good!

Montspy
01-19-2010, 10:02 PM
What a clean flight ! Your quad is very stable and it weight less than 1kg... Awesome job !

luwe
01-20-2010, 03:55 AM
You have a great light quad. I think it be worth considering going with a 4000mAh battery which is only ~128g more than your 2200mAh battery. So, for a ~13.5% increase in total mass you get an energy storage gain of ~81.8%.... There will probably be some efficiency loss, but perhaps some stability gain...