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Type: Posts; User: chuckk2

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  1. Replies
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    387

    Drill Baby, Drill? Looks like some prying has...

    Drill Baby, Drill?
    Looks like some prying has already been tried!
  2. Thread: Variable CG?

    by chuckk2
    Replies
    22
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    2,992

    Played with variable CG some time ago. Two models...

    Played with variable CG some time ago. Two models stuck in memory. One, an Alpha 25 trainer, required so much added weight that I relocated the wing to the rear by about one inch. After that minor...
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    249

    It comes down to the price. A DC only charger is...

    It comes down to the price. A DC only charger is cheaper to supply than a decent AC/DC one.
    American auto standard has been to leave the cigar lighter socket hot with the key off.
    Many of the...
  4. Floureon 5500mAh 3S 35C 11.1V LiPo RC BATTERY EC3...

    Floureon 5500mAh 3S 35C 11.1V LiPo RC BATTERY EC3

    Charge current (1S) 5.5A
    Fully charged voltage 4.2v per cell 3x4.2=12.6v
    Storage voltage 3.8x3=11.4v
    Discharged voltage 3.2x3= 9.6v

    Charge...
  5. It's likely to require more than 1KW. What...

    It's likely to require more than 1KW. What voltage is contemplated?
  6. Replies
    5,254
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    145,009

    "or the law enacted by Congress banning FAA rules...

    "or the law enacted by Congress banning FAA rules for model aircraft."

    banning NEW FAA rules is correct. The FAA claims that it just did not enforce the existing ones, as well as adding new ones...
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    216

    First, the lower charge rate than discharge rate...

    First, the lower charge rate than discharge rate is fairly common to rechargeable batteries.
    The most common is (naturally) the lead acid type. The modern lead acid has lead plates with
    a porous...
  8. Replies
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    1,025

    This is a lulu! Anyway, with the long leads, I'd...

    This is a lulu!
    Anyway, with the long leads, I'd add a capacitor to the servo power leads towards the servo. I'd also connect the servo control wire via a 1K to 10K or so resistor to the common...
  9. Replies
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    397

    Should this be happening? Probably. The battery...

    Should this be happening? Probably. The battery may need several charge discharge cycles before it reaches maximum capability.
  10. Replies
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    234

    The 4200 likely has a bad cell. With careful low...

    The 4200 likely has a bad cell. With careful low current charging, it might be usable as a bench test source if full current and capacity are not needed.
    The 350 may be ok with proper charging....
  11. Replies
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    376

    Short of running multiple charge discharge cycles...

    Short of running multiple charge discharge cycles to find out what the actual capacity is, I'd just replace the batteries.
    Also watch out for NOS stock in hobby shops.
  12. Replies
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    You have to be kidding! Use the same connectors...

    You have to be kidding! Use the same connectors that you use to connect the Lipos and ESC's.
    I'll leave the whyfors to someone else.
  13. Replies
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    665

    A higher "C" rating usually means that the Lipo...

    A higher "C" rating usually means that the Lipo has a bit lower internal impedance than a lower "C" rating.
    In a few cases, it's an inflated rating to help sell.
  14. Replies
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    403

    I think that might mean battery voltage error...

    I think that might mean battery voltage error cell connection. The picture shows the multiconnector, and an in line adapter.

    Do you have a DMM that you can use to read the cell voltages?
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    614

    Is this the model? Designed by Bill Evans,...

    Is this the model?
    Designed by Bill Evans, Future shock is the latest in the Simitar Series of tailless aircraft. It has a balsa-and-ply fuselage and a foam wing, and the plans show two versions-...
  16. Replies
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    4,192

    "No it's no OK to be completely irresponsible...

    "No it's no OK to be completely irresponsible just because your a "billion dollar industry".
    That's why they pay lobbyists to convince the politicians that it's AOK.
  17. Replies
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    299

    Brushed motor systems are simpler and less...

    Brushed motor systems are simpler and less expensive. They tend to be supplied with lower cost models, or older versions.
    And if everything is as it should be, brushless motor systems are able to...
  18. Replies
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    3,442

    The FAA - - - If it flies it is in airspace. We...

    The FAA - - - If it flies it is in airspace. We control airspace.
    If it's not specifically allowed, it's forbidden.
    Ergo Sum Est!
  19. The E Flite motors have different RPM (KV)...

    The E Flite motors have different RPM (KV) ratings.
    When looking at the 46, 52, and 60 motors, that must be taken into account.
    First, what is the expected overall weight, and what is the maximum...
  20. One is a wiring diagram, the other sort of a...

    One is a wiring diagram, the other sort of a schematic. Both are correct.
  21. Dealing with reputable vendors costs more. I...

    Dealing with reputable vendors costs more. I seldom buy from others, because of the hassle and higher chances of problems.
    On the other hand, buying electronic parts (If you know what you are...
  22. Replies
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    254

    Safe capacity limit may be user settable. The...

    Safe capacity limit may be user settable. The NMIH might better than the 2000mah rating, or at the start, might have been more discharged than normal.
    I'd likely try cycling to see what happens. ...
  23. Lets see - - An automotive Pb battery is about...

    Lets see - -
    An automotive Pb battery is about 13.6v or so at full charge Maximum charging voltage is about 14.6-14.7v
    The charge rate is usually no more than a few amps if the maximum charge...
  24. Replies
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    The ESC is a bit under rated for the motor....

    The ESC is a bit under rated for the motor.
    Using 9A & W=IE. 100/9=11.1V, 11.1x1380 = 15318 RPM. (No load)
    3x4=12, so a 3S lipo could be used if the proper propeller is selected.
  25. Since H9 and Horizon did not show a schematic,...

    Since H9 and Horizon did not show a schematic, who knows!
    The nob may have nothing to do with the meter, and what the meter actually measures.
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