Extreme Flight 76/83" MXS

[SnowDog]

yes, Tom, I agree...be sure to check amp loads on every single servo...those numbers seem high.

 

[AKfreak]

Ok I'll check everything. I know in high rates, the elevator servos sing pretty good. I might be too tight on the bevel. Other than full deflection in high rates, the servos are almost dead quiet. Some investigation is in order.

Since the power safe uses two battery's, I should measure watts with only one battery in place, then check the load on the other lead to make sure it's the same?

 

[SnowDog]

Ok I'll check everything. I know in high rates, the elevator servos sing pretty good. I might be too tight on the bevel. Other than full deflection in high rates, the servos are almost dead quiet. Some investigation is in order.

Since the power safe uses two battery's, I should measure watts with only one battery in place, then check the load on the other lead to make sure it's the same?

You will want to measure load for one servo at a time, so measure it on the servo output lead, not the power input lead.

 

[AKfreak]

I got it sorted, I made a video and will post it later. I had the control surfaces buried in the bevels and these servos are very powerful so the current draw dot through the roof. The elevator alone was 29 watts on high rate. I adjusted everything, and it's night and day. To test each servo, I zeroed out the travel adjustment on al servos and minimized the draw of each deflection angle (one at a time). I bet I am drawing 1/3 of the current I was drawing. I'll post the video soon.

 

[SnowDog]

sounds right...those consumption numbers were crazy...glad it was a relatively simple fix!

 

[Ohio AV8TOR]

Glad to hear Tom

 

[Ohio AV8TOR]

Sp where have you guys settled in to your liking with the CG? I used strings around the wing tubes and marked batteries for level there and slightly nose down tilt and I like that for flying better.

 

[AKfreak]

I used little pieces of red covering to make CG marks (factory recommended) on the bottom of he wings at the root. I am slightly behind the front mark. The plane flys perfect. just a touch down to hold the nose up inverted.

My plane wants to roll left, do I have one click of right aileron to make it fly level. Maybe my elevator halves aren't lined up correctly and causing the plane to twist. Or my lateral CG is off. I will know soon enough. Lots of testing on a new plane.

I flew it two more times today. I need to test the battery again. Stay tuned.....

I needed to check my side to side CG

 

[AKfreak]

Yesterday here was the numbers 4200mah total, I used 1002mah in 15:00 mins of flight that's using 66.8mah per min 66.8 x 40 mins is 2672mah of 4200 = 1528/2= 764mah left in each pack after 4-10 min flights. This is not good!
Today Here are the numbers. 4200mah total, I used 810mah in 18:00 mins of flight that's using 45.0mah per min 45.0 x 40 mins is 1800mah of 4200 = 2400/2 = 1200mah left in each pack after 4-10 flights. This is great! 1200mah is over 1/2 the capacity (1050mah) os the 2100mah packs.

If id did the math right, I am safe to fly 4-10 flights with Zero risk of battery failure. Basically each 10 min flight cost both my packs a total of 450mah. Also I just ordered 2 more packs in case I want to put in round robin flights all day long.

So did I do it right guys?

 

[AKfreak]

I guy took some pics of me at the field today. All by myself with no one else there with a plane. It was sweeeeet! I will say that WA lens does make me look fat.... lol

The last one is a good shot at my fancy schmancy fuel drain ')