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HomeAircraftHelicopterBeginners Corner › New guy with HK 450 GT PRO (Belt Version) Help!!!!!!!!!!!
11-21-2011 05:39 AM  6 years agoPost 1
wil1984

rrNovice

San Jose, Costa Rica

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Hello Guys!!!!
I am new with rc helicopters. Like a moth ago I received my HK 450 GT PRO version and I have almost everything that I guess I'm going to need to start to build it but I would like to know if you can help me out with comments, things you know about the model, tips, things need to be replaced in this model.
So far this is what I have:

HK 450 GT PRO (Belt Version)
Align 410M x 3
Align DS520 X 1
Spartan Quark
ESC 35A
ZIPPY Flightmax 2200mAh 3S1P 40C x 4(waiting for it...)
Turnigy 2836 Brushless 450-Size Heli Motor 3700kv (waiting for it too...)

If any of you have replaced any part for Align could you please tell me which part you replaced and what is the equivalent in Align.
I really apprecite it guys, thank you for your time.

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11-21-2011 04:54 PM  6 years agoPost 2
127.0.0.1

rrNovice

USA

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I know a couple people that have started with the clones and the first time they built it they replaced the shafts (Main/Feathering/Tail) with genuine Align ones. I think the only other thing commonly replaced on the clone kits is the Main/Auto-Rotate gear because the clone ones have a tendency to be warped.

There's no place like 127.0.0.1

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11-22-2011 09:36 PM  6 years agoPost 3
Civerad

rrVeteran

Cincinnati, OH, USA

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I've started with an HK 450 as well and so far I've replaced the main gear, auto gear, one-way bearing casing, tail holder block, and main shaft. The bad parts on these kits are pretty much different from one kit to the other so I basically replaced parts with Align products if I feel like they're not flight worthy. You have to make your own decision as to which parts need replacing. Also, you need to check more often if any parts are worn as HK parts tend to wear out quicker. Also the belt is very weak, so if you flop it once, make sure you inspect the belt.

I hope that helps. Good luck with your build.

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11-22-2011 09:59 PM  6 years agoPost 4
MichiganFlyer

rrElite Veteran

Lansing,MI

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I have an EXI 450 and one thing I found was a sticky tail slider. Instead of running out and buying Align parts I oiled the tail shaft and used fine emery cloth on it. This relieved all binding. Then when I crashed and bent it I put align parts on.
If you are just learning, I wouldn't worry about the main and feathering shafts as you will be replacing them after your firdt crash. My Main gear and autorotation gears were also warped, so it is a good idea to replace them.
Remember a crash is a learning experience and a chance to upgrade.

Friends don't encourage friends to fly helis! It can cause part shortages.

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11-23-2011 03:15 AM  6 years agoPost 5
wil1984

rrNovice

San Jose, Costa Rica

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Hi guys thank you very much for your feedbacks. Thanks MichiganFlyer,Civerad and 127.0.0.1 I really appreciate it.
What is a little bit tired as far as I have seen is that since what I have is a clone is kind of difficult to find the right Align parts to replace because the HK 450 GT PRO is a mixture it has the frame of a Align T-rex 450 pro but it has the T-rex 450 sport's tail so the head belongs to what model?
The main shaft of my heli has some rest of welding and I thought would be a nice idea to replace it for the original Align uses in the T-rex 450 sport so I bought it but when I got it I found that it was a little shorter that the one I have so now I was told that the one I needed was the main shaft of the T-rex 450 pro so here comes the question, is there a page online that has the functional equivalent of each part of the HK 450 GT PRO in Align?.
Sounds hard right?(lol )

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11-23-2011 03:30 AM  6 years agoPost 6
127.0.0.1

rrNovice

USA

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I've go to be honest, the price of genuine Align airframes seems to have come down considerably in the last month or so. Could you consider just picking one of these up? I mean, it would save the answers to a bunch of those questions...

There's no place like 127.0.0.1

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11-23-2011 03:43 AM  6 years agoPost 7
wil1984

rrNovice

San Jose, Costa Rica

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Hey that makes a lot of sense, now the HK 450 GT PRO is supposed to have the airframe of the t-rex 450 Pro but as I told you it has the tail of the t-rex 450 sport so if I buy the Pro's airframe do you think I could have a problem to install the tail boom? You know, I am going to take some pictures and I am going to upload them here so probably you and other guys can give me ideas and probably you can see something I don't. And sorry if I am a silly rabbit but I just want to make sure of what I am doing

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11-23-2011 03:47 AM  6 years agoPost 8
Civerad

rrVeteran

Cincinnati, OH, USA

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wil,
So far most of the Pro parts I've replaced mine with seem to fit. Though I did convert mine to a torque tube and went flybarless. You should be good with the first set of flights with HK stuff, just don't do any smacks, especially with the welded mainshaft collar. I for one had a light flop one time and that collar popped off.

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11-24-2011 06:19 PM  6 years agoPost 9
Bladecpnitro

rrApprentice

Ga

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It sounds like your off to a good start with some nice electronics man. Make sure you medium loc-tite every single screw that goes into metal. My EXI 450 has the rudder servo mounted in the back of the main frame which works fine, its more of a hassle to work on though. I think Im gonna move it to the boom where its easier to access. All ill need is a shorter rudder linkage rod off the appropriate model.
The only thing Ive replaced on mine with Align parts is feathering shaft, main shaft, main gear, tail gear and rotor blades but only after crashing.

If its fixed don't break it.

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11-24-2011 09:23 PM  6 years agoPost 10
salrica

rrApprentice

Raleigh,NC

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Will,

I have the same heli as you and I'm ordering align main shaft as the 450 pro, the tail is Sport.
If you are a newb, my suggestion is to stick with the belt driven heli.
Don't loose any parts when replacing your belt, specially the part that comes on the tail case bearings.
I'm not sure if the Align airframe is going to work with the belt version.
Shoot me a PM If you have any questions and I be happy to help you as other people did for me.

Rick

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11-27-2011 11:18 AM  6 years agoPost 11
Matt Wright

rrApprentice

Harare Zimbabwe

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I have had alot of fun with my HK-450 pro TT, there were a couple of small things that i replaced. Firstly the tail shaft was bend from factory, luckily i ordered a whole new HK tail case anyway so it was not a problem, after a minor crash or infact hard landing the swash bearing popped out and would not go back in properly so as a temporary fix i just locktited it in carefully. I will have to replace the swashplate soon. The belt version you have is defiantly allot easier to look after than the TT one i have, and is easier on beginners.
Best of luck and if you find a link to a page of the HK vs Trex spares please post it
Every part i have replaced has fitted fine.. So far

If you go down...... Go down having fun

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11-27-2011 12:40 PM  6 years agoPost 12
Bladecpnitro

rrApprentice

Ga

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Hey Matt, I would have figured the TT would have been as easy as 1 2 3 to work on, I haven't tried one yet though. I know if you bend the boom on a belted Heli just a little and can't manage to get it lined back up perfectly the belt will ride over the pulleys. I'm sure bending the boom would put the TT out of sorts too though.

I have figured out an easier way to put a belt on and that is to leave all the bolts in one side of the tail rotor gear box, install the gear box on the boom first, drag the belt through with a coat hanger.

Hey Wil1984 I see this Heli has the new solid blade and flybar links. I have just upgraded to those on my EXI 450 and love em. This makes setting up the head a lot easier. All you have to do at center stick is set the swash 10 mm's from the top of the aluminum frame to the bottom of the swash, then set the blades to zero pitch at center stick, assuming you have found perfect 90 on your servos at center stick. A pitch gauge makes all this much easier, I went without one for my first 8 months into Helis. I could sort of eyeball zero pitch at center stick on the blades and had no idea what they were maxing out at on negative and positive and was just leaving the swash mix in the radio set to the default setting ......

aileron 60
elevator 60
pitch 60

You actually end up changing those to get your pitch set up right. If you max out your left stick forwards giving you positive pitch on the blades and its reading like 14 on the pitch gauge, you'd back off the pitch until it reads 10 or 11 degrees on your pitch gauge, then check to see if its the same for negative. Then in your swash menu set the pitch to where your blades are reading 10 or 11 degrees.
I have my aileron and elevator set to 65 in the radio swash mix now for a much quicker flip rate. And pitch is set to 67 to get 10 degrees positive and negative.

Good luck with it I know your gonna love it.

If its fixed don't break it.

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12-02-2011 11:49 PM  6 years agoPost 13
wil1984

rrNovice

San Jose, Costa Rica

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Hello everybody I was a little bit busy so I couldn't reply to what you have said. First at all I just want to say thank you for what you have shared with me. I haven't had the chance to do something in the helicopter because was just today when I received the batteries and the motor so I will be kind of busy now in the good way lol.So may be tonight I will start to work in the heli so I will be back as soon as possible at this time I am in the work but believe me I just want to get home...

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12-03-2011 01:07 PM  6 years agoPost 14
Bladecpnitro

rrApprentice

Ga

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I see your motor comes with an 11 and a 13 tooth pinion. The 11 tooth pinion will yield 2711 head speed and the 13 tooth with your 3700 KV motor will give you about 3203 Head speed. I've heard folks say anywhere from 2800 to 3200 is good 3D head speed. The lower the head speed the longer the flight times.

That's really good of hobby King to send 2 perfect pinions at both ends of the 3D head speed range.

Here is a handy head speed calculator.
http://dhrc.rchomepage.com/calcAdvanced.htm

If its fixed don't break it.

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