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F 27 conversion question

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Old 07-05-2005 | 10:08 PM
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Default F 27 conversion question

I have 9.6v 2100mah batteries and want to put on a ATPro iX Series 20L-4800 Brushless Motor with a 30amp speed controller. Is this a good idea? Anyone. Oh and does the stock prop need to be changed or is there a better prop for this plane???? Fairly new but can fly, need tech ass.
Old 07-06-2005 | 01:45 PM
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Default RE: F 27 conversion question

skydreamin
are you planning a Scratch build Stryker?
or retaining the Stock electronics?

Cadetman
Old 07-06-2005 | 01:57 PM
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Default RE: F 27 conversion question

Cadetman,
Ah, I wanted to be the tech ass.

Skydreamin,
Definitely need more info for a somewhat educated guess.
Old 07-06-2005 | 02:08 PM
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Default RE: F 27 conversion question

Glacier
OK its Your Turn hahaha
Old 07-06-2005 | 03:08 PM
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Default RE: F 27 conversion question

I have 9.6v 2100mah batteries and want to put on a ATPro iX Series 20L-4800 Brushless Motor with a 30amp speed controller, yes taking stock speed controller and reciever out, have a new 4 channel reciever but stock prop.
Old 07-06-2005 | 03:09 PM
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Default RE: F 27 conversion question

I have 9.6v 2100mah batteries and want to put on a ATPro iX Series 20L-4800 Brushless Motor with a 30amp speed controller, yes taking stock speed controller and reciever out, have a new 4 channel reciever but stock prop.
Old 07-06-2005 | 03:34 PM
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Default RE: F 27 conversion question

First step with any repower package. Meter it to check amp drawl.
Very high KV motor, means lots of speed, not a lot of torque.
May need to step down prop to something like a 5X3
Old 07-06-2005 | 05:54 PM
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Default RE: F 27 conversion question

skydreamin

I have 9.6v 2100mah batteries and want to put on a ATPro iX Series 20L-4800 Brushless Motor with a 30amp speed controller, yes taking stock speed controller and reciever out, have a new 4 channel reciever but stock prop.
what is the wieght of the 9.6v 2100mah battery pack ?
and what Chemistry is it? Nicad Nimh or Lipo [&:] i am a bit confused with battery Specification
also C rating of Cells would help too

Cadetman
Old 07-06-2005 | 07:09 PM
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Default RE: F 27 conversion question

hey can I be tech ass III? LOL... look out boys there's anothah mainah on the loose here..

skyd, sounds like you have some AA nimh battery packs with that kind of mah numbers.. they're not going to handle the load well at all-- too much internal resistance in AA cells.. if they are subC cells they'll be quite heavy for the plane.. although IR is loads better..

yah need 2/3A cells for the kind of amps you'll be drawing.. you can get them at most battery retailers online.. look for 10C rated packs at minimum .. some are up to 15C ... that's what you want..

where in Maine? maybe I'll do a fly-by...
Old 07-06-2005 | 07:25 PM
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Default RE: F 27 conversion question

They are ninh AA cells, weight of them are 8.6 ounces, the ones i want to use are from cheapbatterypacks.com but are always out of stock A8CBP180045OB, anything over 272grams is too heavy, i want a high mah, what would yoiu recommend?
Old 07-06-2005 | 07:26 PM
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Default RE: F 27 conversion question

lebanon ,me skydive new england
Old 07-06-2005 | 07:33 PM
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Default RE: F 27 conversion question

they are AA nimh batteries weigh at 8.6 ounces
Old 07-06-2005 | 08:00 PM
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Default RE: F 27 conversion question

those sound like TX battery packs, and probably aren't very high in C rating. They will probably get very hot and not last long in a plane..

the same place builds nice packs with their own cells. Go to the "custom packs" section and build a brick pack with 2/3 CBP1100 cells... the 2/3A packs aren't large capacity MAH packs but they are as good as your gonna get without spending lipo money...

before I went to lipo I was getting 8, 9, and 10 cell brick packs from them.. good batteries, good service..

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