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Old Jan 24, 2013, 02:35 PM
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Eugene, Oregon
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multimeter reads [.28] wot ~ is that right for a 6mm geared prop ~ if so than Im simply too heavy, if not than esc not a good solution.
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Old Jan 24, 2013, 02:54 PM
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Southlake, TX
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Originally Posted by elvill View Post
multimeter reads [.28] wot ~ is that right for a 6mm geared prop ~ if so than Im simply too heavy, if not than esc not a good solution.
Disconnect motor and have the voltmeter go across the motor leads. It should read close to 4 volts @ WOT and vary with throttle down to zero volts at zero throttle.

If its only 3.5 volts @ WOT, there is your problem.
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Old Jan 24, 2013, 03:08 PM
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Hi were did you get that little soldering gun ?
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Old Jan 24, 2013, 03:42 PM
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Originally Posted by scousethief View Post
Hi were did you get that little soldering gun ?
Hobbyking, little gun heats faster than any plug in I've owned. very nice gun much safer.

I dont even get 3.5 WOT more like 3.29 - I guess therein lies the problem
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Old Jan 24, 2013, 04:12 PM
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I've never worked with those particular servos but in years past there was a really big loss going through the transistors in the old servos. Possible that a high end-high power servo might have better quality transistors but that kind of defeats the purpose of doing it inexpensively.
Patric
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Old Jan 24, 2013, 05:43 PM
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Originally Posted by elvill View Post
Hobbyking, little gun heats faster than any plug in I've owned. very nice gun much safer.

I dont even get 3.5 WOT more like 3.29 - I guess therein lies the problem
Now for you next trick... put 2S to everything.

The servo boards and the RX should be able to take it.
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Old Jan 24, 2013, 06:57 PM
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Originally Posted by UNGN View Post
Now for you next trick... put 2S to everything.

The servo boards and the RX should be able to take it.
Interesting, didn't even think of that. I could harness two 1s 70mah together for little wright.

Edit: never heard of a 2s running brushed 6mm pager motors b4
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Last edited by elvill; Jan 24, 2013 at 09:56 PM.
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Old Jan 25, 2013, 04:10 PM
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Eugene, Oregon
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2S is the Answer!

Gives 50% more thrust than I could even use. Thanks UNGN. Now I have lots of room to play with the throttle and diff mixing and remove reverse entirely with bigger resistor!

Never seen 6mm gb push so hard! Motors wont last long so will have to dial back alot. Excited for these projects b/c now they are way more doable old school cheap! 9g cheapy boards easily push the 8.5 too.

try get a table video of the most powerful dual 6mm brushed plane ~ The Wright!
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Old Jan 25, 2013, 04:59 PM
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Dialing the WOT voltage back to 4.2V on the multimeter should make them last as long as any other 1S motor... You can also have a "War Emergency Power" mix that gave it an extra volt or two with a switch flick.
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Old Jan 25, 2013, 05:33 PM
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Im a little weary of my multimeter. Tried testing the servo board as I did yesterday but this time on 2S, fried the rx instantly!
Dual 6mm Pager Motors pushed by 9g servos boards on 2S (0 min 42 sec)


motors hot after 75% throttle in vid,
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Old Feb 06, 2013, 05:14 PM
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Eugene, Oregon
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Finally got done with the small Wright flyer!

decided to bite the bullet and get the $9.99 esc. removed wires plug, mixing perfect. This thing flies so slow and sweet; graceful figure eights in the parking lot. Excellent plane! try to get flight video shouldn't be too hard. Happy with little dsm2 Wright!

verdict~ servo board as esc work but Diff thrust mixing with 2 servo boards as esc is a head ache to get perfect almost as if boards drift... oh well - Happy now! UNGN thanks for the mix -25 is what Im using (and its perfect).
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Old Feb 06, 2013, 07:09 PM
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2minute flight ~ breeze hard to keep plane in frame
Wright Brothers Dsm2 diff thrust (0 min 38 sec)

mixing to -35%
Be perfect indoor as breeze does move it around.
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Last edited by elvill; Feb 06, 2013 at 07:25 PM.
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Old Feb 06, 2013, 07:37 PM
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good job, love the cat trying to pounce on it
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Old Feb 06, 2013, 10:27 PM
My dog ate my airplane
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I just found this thread and was hoping the servo boards would work, as I have heard mention of using them as low wattage brushed ESCs before. My son has some toy 27 MHz directional thrust planes that I wouldn't mind trying to modify to use a real radio, although micro soldering is pretty tedious and challenging work. That's a nice little flight video you got though, good work.
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Old Feb 07, 2013, 08:46 AM
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Originally Posted by sredlin View Post
I just found this thread and was hoping the servo boards would work, as I have heard mention of using them as low wattage brushed ESCs before. My son has some toy 27 MHz directional thrust planes that I wouldn't mind trying to modify to use a real radio, although micro soldering is pretty tedious and challenging work. That's a nice little flight video you got though, good work.
hi sredlin, thanx
the servo/esc thing is not worth it, rx415 9$ and two $9 esc is almost as lite as any AH/AA/ITC diff thrust setup, can push bigger motors, heavier lipo and better prop, PLUS mixing these is cake compared to mixing servo boards.

THIS is the cheapest litest DSM2 micro brushed diff thrust setup imo
http://www.hobbyking.com/hobbyking/s...dProduct=11885
http://www.hobbyking.com/hobbyking/s..._Receiver.html

I tried 4 different servo boards from 1.9g to 30g servo, none come close to 1.5a continuously on 1s. These esc DX7 diff thrust mixing is easy and manageable, motors start up perfect and mixed every time.
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Last edited by elvill; Feb 07, 2013 at 09:01 AM.
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