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72" sukhoi 29 and prop question

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72" sukhoi 29 and prop question

Old 10-13-2013, 08:36 AM
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mehrshad
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Default 72" sukhoi 29 and prop question

Hi,
I am assembling a 72" haikong model sukhoi 29. Flying weight will be around 4300gr.
Motor is XM6350EA9 -370Kv with XC9036HV controller.
The LIPO packs I have are 8s 4000mAh and motor works fine with this voltage at over 9000RPM but the problem is the Propeller allowable speed.
As I analyzed with ecalc and dualsky softwares something like 18x6 and 17x8 will be fine for the plane at 5000ft altitude.
I know that 7s would be a better setup but I prefer to not pay on LIPOs again.
Is this RPM range safe with wood props and Will they do the job efficiently?
I prefer to not decrease the throttle range in my radio because of some considerations but I can do that if necessary.
Thanks in advance and sorry for English!

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