HK-500GT 3D Helicopter Build Thread - Page 598 - RC Groups
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Jan 05, 2013, 10:16 PM
Zippy Puffer
2Doggs's Avatar
How about a Gremlin then, they were another wacky looking car!
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Jan 05, 2013, 10:20 PM
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Heh, maybe I'll stick with The Homer.
Jan 05, 2013, 10:20 PM
Registered User
Quote:
Originally Posted by mhills51
I run 3100 on my blemished align 3G blades.
Will be picking these up too. The Stealth blades have mixed reviews.
Jan 05, 2013, 10:38 PM
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Quote:
Originally Posted by 2Doggs
How about a Gremlin then, they were another wacky looking car!
Is that an Aztec?
Jan 05, 2013, 10:45 PM
Zippy Puffer
2Doggs's Avatar
yes, probably for one day only! The lead character in Breaking Bad drives one, I think they thought long and hard about him having an ugly car!
Jan 05, 2013, 10:51 PM
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You should get your 2 Doggs in another pose. I wish I had dogs like this.
Jan 05, 2013, 10:57 PM
Zippy Puffer
2Doggs's Avatar
Those look like 700's to me, I prefer my 450! (one passed on three years ago)
Jan 05, 2013, 11:00 PM
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Didn't know - sorry to hear about that!
Jan 05, 2013, 11:31 PM
Registered User
Atomic Skull's Avatar
Had an encounter with a basketball pole yesterday. I was doing piros fine tuning gyro gain when I drifted behind the pole about 4 feet in front of it, never noticed it till it was in front of the helicopter mid piro. Stopped the piro with the nose facing me as soon as I noticed this then I brainlocked from the unexpected distraction and lost orientation. Helicopter went into the pole about 3 feet off the ground. I don't even remember hitting throttle hold, I guess it's a reflex now.

Exploded blades, bent mainshaft, ruined bearings in the blade grips, 1 tooth missing from the maingear and a damaged swash (the plastic ring took damage) Surprisingly the pitch control arms on the RJX head survived and the mainshaft bearings weren't damaged (I think the washers in the thrust bearings may help protect the radial bearings from lateral hits)

Somehow the feathering shaft wasn't damaged but I replaced it anyway. Also the little antenna mount loop on the front gorilla gear was ripped off but I don't need that anyway so I just removed the one on the back to match. I think the crash would have been way worse without it, it basically came down on the front corner and bounced.

I put the Chaos 500 swash I had laying around on it (which is actually a Phoenixtech swash, it came in a Phoenixtech bag) compared with the Tarot swash it doesn't have a plastic ring (the upper swash ring is solid aluminum with a ball joint in the middle), and there's about 0.3mm of vertical play between the lower and upper sections of the swash. It also rotates more freely than the Tarot swash (both these are probably because it doesn't have a plastic ring) It also uses m2 balls instead of m2.5 balls and they are slightly bigger than the Tarot ones. Tarot links were too tight so I used Align Trex 600 links on it and they are perfect (they also don't need to be reamed to work with the balls on the RJX grips)

The head also seems to have less delta slop (almost none now) than it did with the Tarot swash, this might have to do with the plastic radius arms fitting the balls a little more tightly.

Spectrum A5040's came yesterday so I'm installing those as I put it back together.
Last edited by Atomic Skull; Jan 05, 2013 at 11:36 PM.
Jan 05, 2013, 11:33 PM
Need More PURPLE !!
Dejavu*Xion's Avatar
Quote:
Originally Posted by 2Doggs
yes, probably for one day only! The lead character in Breaking Bad drives one, I think they thought long and hard about him having an ugly car!
lol...very true..I remember the year the aztecs came out. ( 2004 i think ) The following year it was voted most ugly car.


Dave : I sold my DX7 tonight on e-bay , It went for $110..I was shocked considering it had that damn sticky "down" button. I listed the problem and ppl fought over it all the same. I was really only expecting $60. Geeezz now what to do with all this spare money..Buy an aztec maybe ?? har har

Again thanks for the "plane" link. Im going to go thru them when i buy.
Jan 06, 2013, 01:13 PM
Registered User
AS...sorry to hear about the crash..Sounds like it wasn't too bad all things considered.
Jan 06, 2013, 10:13 PM
Registered User
Atomic Skull's Avatar
A5040's are on hold for now, one of them is defective.

The defect is subtle and might have been missed by some people. The servo turns smoothly clockwise, but when turning counter clockwise it turns in visable steps. Subtrim causes it to move every step clockwise, but only every 2 or three steps counter clockwise. In addition, with certain amounts of subtrim it will jitter like it's seeking a position that it can't find. I checked it against the other two and this is the only one out of the three that does this.

Very, very annoyed by this, I bought name brand servos specifically to avoid problems like this and I got a bad servo out of the box for the first time. I sent email to Amain Hobbies, hopefully they will make good on this.
Jan 06, 2013, 10:27 PM
Closed Account
Quote:
Originally Posted by Atomic Skull
A5040's are on hold for now, one of them is defective.

The defect is subtle and might have been missed by some people. The servo turns smoothly clockwise, but when turning counter clockwise it turns in visable steps. Subtrim causes it to move every step clockwise, but only every 2 or three steps counter clockwise. In addition, with certain amounts of subtrim it will jitter like it's seeking a position that it can't find. I checked it against the other two and this is the only one out of the three that does this.

Very, very annoyed by this, I bought name brand servos specifically to avoid problems like this and I got a bad servo out of the box for the first time. I sent email to Amain Hobbies, hopefully they will make good on this.
AMain is very good about returns. Sorry about the crash also.
Jan 07, 2013, 08:12 AM
Marx and Lennon
S_Dave's Avatar
Quote:
Originally Posted by Atomic Skull
That seems like more of a problem with low grade screws than a problem with the head.
We had a similar problem with screw failure, only it was the Tail Rotor blade grips. My friend was flying the first flight: there was a "bang!" and he starts hopping around, holding his knee. Heli settled safely to the ground. The grip screw simply parted (from being in tension) and the blade and grip flew off, leaving the other out of balance. Whole tail ass'y disintegrated and hit him in the knee. Amazing. Reminded me of the parallel between HK helis and Daisy Red Rider BB guns:
"It's always fun until someone loses an eye...."
Jan 07, 2013, 09:19 AM
Registered User
mhills51's Avatar
Xion, Helidirect has pre orders for your goblin 500 and pics.


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