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« on: November 09, 2015, 02:00:35 PM »
ramarao
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can i use directdrive prop instead of slowfly prop for odin 2210 1200kv motor...i want to use direct drive 9*5 or 8*4..is there any problem using dd prop instead of SF prop?....please give me suggestions...

Thank you
Ramarao
« Last Edit: November 10, 2015, 10:37:45 AM by ramarao » Logged
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« Reply #1 on: November 09, 2015, 02:16:32 PM »
subhashjk0508
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there wont be any problem if you don't exceed the max prop size.

JK
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« Reply #2 on: November 09, 2015, 04:18:57 PM »
ramarao
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thank you subhashjk0508....Smiley

i would like know where exactly we can use directdrive prop....if you anything please share here......Smiley
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« Reply #3 on: November 09, 2015, 06:48:16 PM »
K K Iyer
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Quote from: ramarao on November 09, 2015, 02:00:35 PM

1. can i use directdrive prop instead of slowfly prop?
Yes. SF props are meant for low rpm (like with a geared down motor), DD for direct drive.

2. is there any problem using dd prop instead of SF?
No

3. for avionic 1200kv motor...
Aah...
Firstly you didn't mention the battery. A 3s will turn about 15000rpm and a 2s about 10000rpm
without a prop
Secondly you didn't mention the power of the motor, ie max watts. That is what determines the load (or size of prop) it can pull.

4. i want to use direct drive 9*5 or 8*4..
Lot of difference between load of 8x4 and 9x5.
An 8x6 would be closer to a 9x5.

In addition to kv (which is only the rpm the motor will run without load at 1volt), we need to know the max amps/watts and recommended prop size.
After that we can Google for "rc props safe rpm limit"

Hope this helps.
Regards.
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« Reply #4 on: November 10, 2015, 10:31:37 AM »
ramarao
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sorry K K Iyer sir for not providing motor specifications....Sad Sad

thank you  K K Iyer sir for information....Smiley

sir actually it is odin 2210 1200kv motor which i purchased from rcbazaar bymistake i mentioned avionic motor

RPM / V - 1200 rpm
Cell - 3 cell / 11.1V
Prop - 10 x 4.6
ESC - 20 amp
Weight (approx) - 45 gms
Thrust - 810 gms
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« Reply #5 on: November 10, 2015, 12:46:52 PM »
K K Iyer
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@ramarao,
This may be of some help:
http://www.rcindia.org/electric-planes/iyer's-tech-talk-how-much-power/
Regards.
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