New tail drive gear ratio question - HeliFreak
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Old 07-29-2017, 07:01 PM   #1 (permalink)
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Default New tail drive gear ratio question

Hello all,

Just wondering if anyone knows off hand if the newer tail drive gears set are a speed up or slow down ratio?

I have always had to do the kde mod to get the tail to have enough anti torque pitch to hold on hard collective moves at the head speed I want to fly at? It would be nice to not have to?
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Old 07-29-2017, 07:24 PM   #2 (permalink)
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Well I guess this answers my own question...

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Old 07-30-2017, 06:45 PM   #3 (permalink)
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Yep. When you go close to 4000 RPM, any vibes on the tail can make it explode. Lower ratio and longer tail blades let you run it at lower rpm.
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Old 07-30-2017, 10:20 PM   #4 (permalink)
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Yet again Align catering to the high headspeed crew... I like my Trex helis but they do lack foresight for us "low headspeed" guys that don't want to twist the universe to have a good flying machine!
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Old 08-05-2017, 06:20 AM   #5 (permalink)
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Quote:
Originally Posted by Dr.Rudder View Post
Yep. When you go close to 4000 RPM, any vibes on the tail can make it explode. Lower ratio and longer tail blades let you run it at lower rpm.
this is what im doing on my tail. Running RJX blades. not sure what size but they were meant for stretch (360mm blades) i kept them on when i destretched my heli after a crash.
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Old 09-30-2017, 08:47 PM   #6 (permalink)
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I got that new auto gear an never used it.how are you suppose to put the one-way bearing sleeve in it since it already has that metal sleeve thing in it already?
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Old 09-30-2017, 08:54 PM   #7 (permalink)
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Same as before if I remember correctly. It just fits into the metal instead of plastic for extra strength.
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