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Search: Posts Made By: fhhuber
Forum: Electric Ducted Fan Jets 07-29-2016, 07:01 AM
Replies: 35
Views: 2,401
Posted By fhhuber
Nominal voltage of LiPos is 3.7v/cell Its...

Nominal voltage of LiPos is 3.7v/cell

Its ABOUT the voltage at 50% charge

Every type battery actually has a range of voltages from 0% to 100% charge.
Forum: Electric Ducted Fan Jets 07-26-2016, 01:30 PM
Replies: 35
Views: 2,401
Posted By fhhuber
Then we get into the special case of the EDF...

Then we get into the special case of the EDF fan... which will almost always "stall" the blades at some rpm less than full throttle when doing ground testing.

Some of the low power fans such as...
Forum: Electric Ducted Fan Jets 07-26-2016, 09:31 AM
Replies: 35
Views: 2,401
Posted By fhhuber
Also use an IR thermometer to monitor motor temp ...

Also use an IR thermometer to monitor motor temp

EDF motors USUALLY do not overheat before overcurrent because the motor is basically in a wind tunnel...
But better to check and be sure.
Forum: Electric Ducted Fan Jets 07-26-2016, 09:08 AM
Replies: 35
Views: 2,401
Posted By fhhuber
Actually... the motor attempts to deliver power...

Actually... the motor attempts to deliver power demanded.

If you overload a motor, it will demand more current attempting to turn the overload at its normal operating rpm ANYWAY. Since the...
Forum: Electric Ducted Fan Jets 07-26-2016, 06:33 AM
Replies: 35
Views: 2,401
Posted By fhhuber
Best to take this to the Motionrc.com forums...

Best to take this to the Motionrc.com forums (http://www.hobbysquawk.com/) because the experts on Freewing are over there.

In general, the Freewing models are set up very well.
The variants...
Forum: Hi-Performance and Sailplanes 07-25-2016, 08:58 PM
Replies: 11
Views: 4,172
Posted By fhhuber
That fin might work to keep the model centered in...

That fin might work to keep the model centered in the dolly... but may be marginal for dragging the dolly

Maybe add verticals to the front of the center wing saddle to catch the leading edge.
...
Forum: General Electric Discussions 07-06-2016, 09:43 PM
Replies: 5
Views: 598
Posted By fhhuber
power off appx 45 deg dive the plane tracks...

power off appx 45 deg dive the plane tracks straight as it accelerates (proving the aircraft is otherwise trimmed correctly)

Excess down thrust the aircraft tends to nose down as you apply more...
Forum: RC Radios, Transmitters, Receivers, Servos, gyros 07-05-2016, 04:20 PM
Replies: 4
Views: 1,137
Posted By fhhuber
I would connect rudder to rudder channel on the...

I would connect rudder to rudder channel on the gyro for takeoff correction as yaw would be the axis of concern.

Its OK to plug the rudder channel of the gyro to the aileron channel of the radio...
Forum: Power Systems 07-02-2016, 02:40 AM
Replies: 22
Views: 1,301
Posted By fhhuber
Batteries + is in business to sell batteries... ...

Batteries + is in business to sell batteries... Their pricing schedule is built around selling batteries and the actual assembling of the packs breaking even (or a slight loss) on labor.
Forum: Electric Ducted Fan Jets 06-29-2016, 11:21 PM
Replies: 12
Views: 1,379
Posted By fhhuber
Its debatable... and there are a lot of opinions....

Its debatable... and there are a lot of opinions.

Higher C rating (on the label) IMPLIES a lower internal resistance. which implies you can pull higher amps (for a shorter time if its the same...
Forum: Electric Ducted Fan Jets 06-29-2016, 12:51 PM
Replies: 12
Views: 1,379
Posted By fhhuber
12S 5000 mah in a plane that can pull 105 amps (a...

12S 5000 mah in a plane that can pull 105 amps (a bit more but 105 is where the wattmeter melted) averaged 3:30 per flight.

5000 mah is 5 amp-hr

105 amps is 20.1C for the 5 amp-hr pack

Note...
Forum: Electric Ducted Fan Jets 06-29-2016, 04:31 AM
Replies: 12
Views: 1,379
Posted By fhhuber
You will see marginal difference in flight. ...

You will see marginal difference in flight.

If you are racing against another of the same plane... you want the 70C pack.

If you want duration you want the slightly higher capacity with lower...
Forum: General Electric Discussions 06-28-2016, 06:54 AM
Replies: 17
Views: 1,116
Posted By fhhuber
I had a plane lost in a tree for over 9 months...

I had a plane lost in a tree for over 9 months when it was found and returned.
LiPo was shot but everything else worked.

Let it dry thoroughly...

Its hard to predict if it will work or not. ...
Forum: Power Systems 06-21-2016, 11:37 PM
Replies: 63
Views: 3,372
Posted By fhhuber
He hasn't believed anything anyone has told him...

He hasn't believed anything anyone has told him yet...

Why would you expect him to believe the instructions?
Forum: General Electric Discussions 06-21-2016, 03:49 AM
Replies: 4
Views: 690
Posted By fhhuber
Cooling for the ESC and battery. Basic rule...

Cooling for the ESC and battery.

Basic rule of good cooling air flow is: 3X as much exit as entry.

Failing to cut the holes may or may not cause the aircraft to go up in flames. (literally) ...
Forum: General Electric Discussions 06-15-2016, 05:56 AM
Replies: 6
Views: 737
Posted By fhhuber
Not sure of any website... Brake: The ESC...

Not sure of any website...

Brake: The ESC brake function essentially shorts 2 poles of the motor to create a braking effect. This is generally used for powered sailplanes with folding props. ...
Forum: Airplanes - Electric For Sale & WTB 06-14-2016, 05:09 AM
Replies: 9
Views: 1,426
Posted By fhhuber
Maxford is constantly discontinuing and...

Maxford is constantly discontinuing and re-issuing these models with different covering. Same planes... Sometimes transparent, sometimes solid yellow, sometimes painted like a fish.
Forum: Power Systems 06-12-2016, 05:50 PM
Replies: 63
Views: 3,372
Posted By fhhuber
On the 6 blade 4S rated fan vs 12 blade 6S rated...

On the 6 blade 4S rated fan vs 12 blade 6S rated fan.... There's a different motor and a HUGE difference in watts of power. to get the higher performance with the larger blade count.
The added...
Forum: Off Topic Chit Chat 05-21-2016, 01:08 AM
Replies: 49
Views: 2,377
Posted By fhhuber
You've never dealt with the IRS where you are...

You've never dealt with the IRS where you are guilty until proven innocent.
Forum: WWI Era 05-19-2016, 06:00 PM
Replies: 30
Views: 5,414
Posted By fhhuber
Either should be fine for elevator. Rudder...

Either should be fine for elevator.

Rudder on the DR1 can be a problem to hinge. Large surface area and small area for installing hinges.
Use of near scale metal straps with steel wire hinge pin...
Forum: General Electric Discussions 04-24-2016, 05:09 AM
Replies: 45
Views: 2,938
Posted By fhhuber
The turning issue is common with taildraggers...

The turning issue is common with taildraggers when you don't manage throttle and rudder properly.

The pitch issue is likely to be CG and/or wing vs tailplane incidence or thrustline.

Yes,...
Forum: General Electric Discussions 04-18-2016, 05:40 PM
Replies: 5
Views: 530
Posted By fhhuber
Without adjusting the mix.... zero difference. ...

Without adjusting the mix.... zero difference.

The mix allows programming differential, mixing with flaps or other features depending on other aspects of the aircraft setup.

Some planes there's...
Forum: Electric Ducted Fan Jets 03-28-2016, 08:58 PM
Replies: 78
Views: 4,831
Posted By fhhuber
cool room temp is fine... the difference between...

cool room temp is fine... the difference between 70F and 38F in pack life is maybe a few days....
Forum: Electric Ducted Fan Jets 03-28-2016, 05:56 PM
Replies: 78
Views: 4,831
Posted By fhhuber
I average 3.5 years high power use in EDFs,...

I average 3.5 years high power use in EDFs, followed by another 1 to 2 years at milder demand from my LiPos without paying a lot of attention to storage charge voltage... just leaving them at the...
Forum: Electric Ducted Fan Jets 03-28-2016, 09:14 AM
Replies: 78
Views: 4,831
Posted By fhhuber
Yes there is degradation . Slowest...

Yes there is degradation .

Slowest degradation is at storage voltage in the refrigerator. Do not put it in the freezer ever.
Forum: Scratch and Kit Built Aircraft 03-25-2016, 02:10 AM
Replies: 29
Views: 4,099
Posted By fhhuber
Looks like a professional job.

Looks like a professional job.
Forum: Humor 03-25-2016, 12:20 AM
Replies: 3
Views: 2,056
Posted By fhhuber
http://i1.wp.com/www.twistermc.com/blog/wp-content...

http://i1.wp.com/www.twistermc.com/blog/wp-content/uploads/2010/04/easter-bunny.jpg

And you thought you were having a bad day at the office...
Forum: Pusher Park Jets 03-24-2016, 12:39 AM
Replies: 3
Views: 3,041
Posted By fhhuber
Looks very nice

Looks very nice
Forum: Off Topic Chit Chat 03-21-2016, 10:54 PM
Replies: 6
Views: 785
Posted By fhhuber
Can make your own with any color printer and...

Can make your own with any color printer and business card software... which is free.
Forum: Scratch and Kit Built Aircraft 03-14-2016, 10:46 PM
Replies: 29
Views: 4,099
Posted By fhhuber
Dust collection is always problematic. Dust...

Dust collection is always problematic.

Dust in the air can be reduced with your box fan idea, but you'll go through a lot of filters. Maybe use a washable one.
Not finding a link to the green...
Showing results 1 to 30 of 443

 
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