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500 Trex 500 Opinions

Discussion in 'Helicopters' started by Dennis H, May 14, 2018.

  1. Dennis H

    Dennis H Member

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    What is your opinion between the TRex 500, the 600, and the 700?

    I have all three and use Skookums on all three.

    The TRex 600 and 700 fly great. The 600 has a scale body, the 700 is stock.

    Both the 600 and 700 fly great with the Skookum 720, Black Editions.

    I just put a scale body on my TRex 500 with a Skookum, and there is a mass difference with this Heli. My biggest problem is the tail rotor will not keep the Heli straight unless I hold about 1/2 right on the transmitter. I have set up over 10 Skookum with no issues.

    I lowered the RPM's to 1,800. The tail rotor rod is not binding or giving, it's actually working. I see it moving and while on the ground (full throttle), it's definetly blowing hard. It's like the blades are not big enough, or the gearing is wrong. I have tried setting through the Skookum, and manually. No Help.

    I was looking forward to the 500 as I wanted a smaller Heli to practice with. I tried a 450, but vibration issues stopped me. I was advised to get a current Gyro, ICON, 3SX, even a MicroBeast, this is just for the 450's. Skookum vibrations issues are common. I have never had a problem with the 600 & 700, infact several times the Skookum didn't require "any" adjustments during its first flight.

    Any ideas?

    I know Skookum is just about History, I still like them, I don't like the vibration issues, I was told the Bavarian 3sx would not have any vibration issues as well as ICON's.

    I really don't want to swap to a different Gyro, but if it's inevitable, I need to make a chocie as to which one I use.

    The Skookum features I like follows: Altitude Hieght-bottom deck, Position Hold, Return to Home, and Rescue.

    What are my options with today's Gyro's that have similiar features. DJI's are a little expensive, so let's go from here.

    I know this is a two question post, I am looking for support as to what direction I am going to go!

    Can I stabilize the 500?

    Or getting a current Gyro the answer?

    Thanks, Dennis
     


  2. Smoggie

    Smoggie Well-Known Member

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    1800RPM is way too low for a 500. Try cranking it up to something closer to 2500RPM
     
    Dennis H likes this.
  3. Dennis H

    Dennis H Member

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    I will bump the RPM's up.
     
  4. holtneil

    holtneil Active Member

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    Hi when I fitted the cobra to my 500 the weight didn't affect it to much i am running a low head speed about 1840 but you can't fly them to hard at that speed , to keep tail in check i upped to 75 mm blades
     
    Dennis H likes this.

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