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Old 03-13-2012, 04:27 AM   #1
rotor head33
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Default What about these rotortechs

So I have 609mm rototechs on the bird now. Never flown rototechs before and really wanna sell them and put some radix 625v2s. Do yall think that I could make a good chunk off the blades? Blades are flawless or do they fly ok. I want super fast cyclic control (running flybarred)


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Old 03-14-2012, 06:37 AM   #2
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What do the Rotortech's weigh compared to Radix? As the Rotortech's are shorter, I would expect them to give faster cyclics than the longer Radix, but weight also plays a difference.

In essence:

Shorter, lighter blades = faster cyclics, less stability in FFF, less energy in autorotation.

Longer, heavier blades = slower cyclics, more stability in FFF, more energy in autorotation.
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Old 03-14-2012, 10:24 AM   #3
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Never really looked at the specs and I agree and understand your reasoning. Apparantly they seem to be a pretty popular blade but are definitely ugly IMO. I'll compare and contrast specs I guess


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Old 03-14-2012, 10:57 AM   #4
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They have the lightest, quickest 690 blades I could find and really like them. Try them before condemning them,especially if you like quick cyclic.
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Old 03-14-2012, 11:26 AM   #5
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The Rotor Tech's have been my favorite blades for awhile now.

I have found after using many blades that weight is not the only criteria t determine performance. I think where the weight is placed - further inboard or outboard on the span and/or further forwarard or rearward on the chord) effects the performance more then a few grams of weight difference.

The airfoil and tip shap also have a great influence on that performance and the ones used on the RT's seem to work very well.

I think you should try them. You may find you really like them, just as I did.
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Old 03-14-2012, 12:06 PM   #6
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Should I stick to 610s or go bigger? I'll try them out!!


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Old 03-14-2012, 12:07 PM   #7
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An additional "spec comparing tip" after reading post #5 :


If it's marketed as a 3D blade, the chordwise CG is usually more forward, This also goes for narrow chord blades. Therefore, in general, a blade with comparable narrow chord is more agile than a wider chord.
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Old 03-14-2012, 12:09 PM   #8
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I agree


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