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› Can oversize blades pull too many amps causing pack damage?
02-10-2006 01:35 AM  12 years agoPost 1
DaBman

rrApprentice

San Diego, Ca.

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Hello all,

I have a Logo 20 and I am running 2 4S4P(8S4P)with 680mm blades.
I know the 20 is designed specifically for 600mm blades. While
flying recently I was flying in 10-15 min. intervals.Upon my
second landing I heard a strange "hiss" and upon inspection
I noticed that the forward 3 cells on one of my packs had swollen
enormously. Could it have been that my oversize blades were
causing the motor to draw too much current. The other pack was
fine when I checked it on my charger. The remaining voltage
and Mah was about right for the time I had flying on the pack.
Strange that only one pack was damaged. Should I go back to
600mm blades? Any thoughts or suggestions would be appreciated.

Logo 20 stretched, 810mm boom, 690mm mains, Pletti 300/25/ Schultze 32.4 , 8S4P, Priceless!

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02-12-2006 02:09 AM  12 years agoPost 2
HugeOne

rrKey Veteran

Quebec, Canada

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Were your 2 packs at the exact same voltage before flight, uneven voltage can make one dip to low and swell at end of flight. A wattmeter will tell you if you overdraw your packs. Also, if you didn't went down pinion size when you change over 690s it is possible you abused yours packs

Raptor e620 w/V-bar, Tango 45-06, Phoenix 85HV, TrueRC 12S1P 4000mAh

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