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HomeAircraftHelicopterBlades and Night Flying › mah blades
04-06-2009 02:55 AM  9 years agoPost 1


anderson, sc

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what is the difference between g2 and g3 blades on 690 and 710 mah blades.

04-06-2009 09:01 PM  9 years agoPost 2

rrKey Veteran

Edison, NJ

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The G2 is a “tapered blade” meaning the root cord of the blade is longer the tip cord of the blade by about 10 millimeters. The G3 is a “wide cord blade” meaning an even cord fro root to tip. Most guys are running the wide cord or "G3" because they give the helicopter plenty of pop and are great for 3D.

Will the G2s work for 3D? Absolutely! The trend today is for the wide cord blades because they give the helicopter certain characteristics that the tapered blades may lack.

The G in G2, G3 stands for Generation.

MRC Host

04-10-2009 12:02 AM  9 years agoPost 3


Richmond, VA, USA

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A constant chord blade like the G3, while a little bit slower in max FFF speed, offers many advantages not only for 3D but almost all flying styles. First, the outer half or even 1/3 of the blade is doing most of the lifting because the blade(tip) speed gets higher the further you go out on the blade. Thus in cases where headspeed may be lower such as at the end of autos or in aerobatic autos, we can expect a constant chord blade to maintian lift more predictably and to a lower head speed. A constant chord blade will also deliver more collective bite at a lower angle of attack because, once again, you have more blade area further out at the tip where it's needed to generate lift or, in 3D terms, more pop without necessarily needing to go to excessively high collective pitch angles to get the model to move as agressively as you would like.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

04-10-2009 03:05 AM  9 years agoPost 4


Myrtle Beach, SC - USA

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Dr.Ben...that was a most impressive explanation. I was going to say they auto like s***, which now seems totally inadequate.

FAA Mission statement. We're not happy until your not happy

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