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Old Jun 12, 2010, 04:44 AM
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CrashingDutchman's Avatar
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New HK-500CMT 3D Electric Helicopter Kit

The highest SPEC HK Heli, the CMT is all metal, all carbon and allll good!
You cant upgrade this bad boy, its already upgraded to the maximum!

http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=11445

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Old Jun 12, 2010, 08:39 PM
that's gonna leave a scar
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pretty sweet 500 !
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Old Jun 13, 2010, 07:42 AM
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Now they just need to do one that comes with their Flybarless rotor head upgrade.
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Old Jun 14, 2010, 05:28 AM
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Hi,

Just ordered one.

Since last week I am finally able to fly rounds with my 400 sized helicopter. But these are to much wind sensible. So that why I ordered the 500 size.

Didn't know it was a new one just before a ordered it. (no reviews)
But the 500GT seems to be a good helicopter so I took the risk. Love carbon and alu parts so thats why i bought the CMT.

Did not buy a setup at the moment so the first flight could take a while.

Greetings Dennis
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Old Jul 02, 2010, 05:42 PM
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Hi

Isn't there anybody who's interested in this heli or is there an other topic here?

Mine arrived today.

Here some pics and a quick build (photo only)




Out of the box








HK500 CMT vs. Art-tech Hughes 300 "400 Class"
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Old Jul 03, 2010, 05:50 PM
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en?

its all nice and shiny but what about parts fit and play?
have you already done a spool up to see if it shakes apart or not ?
btw bevore you go for the "impaler award" you might want to reach for that bottle of lock tight or do you trust a chinese worker who is wondering if those savety nets they just hung between the buildings are just for show or actually work?

And the metal they used is it proper (dural?) aluminium or shiny butter that they got cheap at the local "rejects store"?

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Old Jul 03, 2010, 05:52 PM
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Btw figures to have a jam colored heli in tiel... how is flipje doing?
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Old Jul 06, 2010, 09:10 AM
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Hi,

Flipje is fine LOL

Yesterday I took the heli apart. They did not do a bad job. Every bold/nut had some threatlock. A few not but that weren't very importent ones or got several in it so if you loose one it wasn't a problem, and those were thight.

Only problem so far was the maingear vs the maintail gear.
When I put the bold through tha shaft it clambs to tight and the gear wasn't free spinning (autorotation/oneway diff.) The problem was the washer between those to gears. The shaft hole was a bit off so the bold pushes it upwards and locks them together.

I made a bit more clearance in the hollow shaft. (bold through hole)

this one


And now it's running without friction.

At the HK reviews I read someone had broken the tailrotor shaft in the first flight.

I don't have all electronic parts yet so the maiden would take a few weeks.

For safety and just in case I hover a few flights low on the ground.

Bold could be better. They survived but just bearly.

Greetings Dennis
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Old Jul 06, 2010, 12:32 PM
A man with too many toys
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Quote:
Originally Posted by CrashingDutchman View Post
The highest SPEC HK Heli, the CMT is all metal, all carbon and allll good!
You cant upgrade this bad boy, its already upgraded to the maximum!

http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=11445

Not true Ė you need a torque tube drive kit and flybarless head to satisfy me.




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Old Jul 06, 2010, 04:37 PM
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Don't get the torquetube idea.
Many many years ago the dropped that for a belt drive and now they go back and it's everything.

And for someone like me who's flying rounds and 8 figures this is enough for a while.
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Old Jul 06, 2010, 05:03 PM
A man with too many toys
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Quote:
Originally Posted by TurboCinqy View Post
Don't get the torquetube idea.
Many many years ago the dropped that for a belt drive and now they go back and it's everything.

And for someone like me who's flying rounds and 8 figures this is enough for a while.

If you are a good flyer and donít crash much the torque tube will last longer. It also eliminates Electrostatic Discharge (ESC) that belts tend to generate. The main reason that Align went to a torque tube is because ESC was causing Spektrum brand receivers to lockup and crash. Spektrum make some changes so thatís not so much of a problem with the newer receivers.

If you are just learning and crash a lot or dig the tail in the grass a lot than a belt is best. The belt and pulleys ware out so you have to keep an eye on them. Thatís why some companies offer helicopters with either option.


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Old Jul 07, 2010, 01:42 AM
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Okť Thanks for the explanation.

They have the 450 in belt and torque so maybe the 500 come soon.

I hope my heli won't fail but you never know.

I was meant to use a HK401b and Turnigy swash servo's and BMS tail but someone offered me a GY401 with Hitec metalgear servo's (analoge) and a digital JR.
Hitecs fits but the JR is just a bit to big. But I have some spare CF board so cut a new one for it. And maybe later an other tail servo.

HK 1600kv and turnigy 85Esc are on the way.

Should 4A BEC enough for 3x analoge and 1 digital? I think so.
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Old Jul 16, 2010, 10:28 PM
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I just got this. Question the metal tail does not have a notch for the tail boom. How do I make sure the tail is centered on the tail boom. Do I just eye ball it? Thanks
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Old Jul 25, 2010, 09:37 AM
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I think it does the job.
Other possibility is to do it with a protractor (something with 90 degrees angle)

2 days ago I was almost ready for the first flight but while programming the ESC I exidently gave full throttle for a second. Tailblade strikes my transmitter (I think) and the taildrive gear lost some teeth.

Main blade scratched my arm but not hard. So not much damage.

It was a turnigy 85A esc. Normally you ENTER/confirm the programming by closing the throttle and then put it back to full throttle to go back to the menu for the next step. This one could do one thing at the time I found out later in the manual

Distance between taildrive gear and autorotation gear is to big. I tried to make the sleeves and screw holes a bit bigger before but it was still not enough. Without the teeth on the gear there was almost 1mm space between it. So still to much. I maken them bigger again to reduce the distance.

Now wait for spares.
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Old Jul 26, 2010, 06:56 AM
A man with too many toys
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Align is moving up to the 550e (actually 520 blades not 550) so maybe HK will do the same thing. I really like the fact that the 550e has a larger diameter tail boom.

.
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