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RE: Official HDX-450 Thread - 12/10/2007 5:55:08 PM   
Cyclic Hardover



Posts: 7221
Joined: 5/7/2002
From: New Mexico, USA
Status: offline 		Logic tells me the setscrew would go into the recessed area otherwise whats the point of it being their. problem is when I removed the screw on mine and looking into the hole, its right in the middle, so now I think i have a problem.

< Message edited by Cyclic Hardover -- 12/10/2007 6:39:03 PM >

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RE: Official HDX-450 Thread - 12/11/2007 5:25:30 PM   
MMatheny


 

Posts: 805
Joined: 1/23/2003
From: Dickinson, TX, USA
Status: offline 		You say the set screw seems to be sitting in the middle of the recessed area? If so, that is correct. Last night I took mine loose and tightened the set screw down as far as I could get it and still be in the flat area, and I have about 1/2mm at most of play in the shaft up and down. I think I will just leave it there, I feel better having it set in the flat rather than just clinging to the shaft!

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"Never use your shins as a blade tracking device" - Mike

(in reply to Cyclic Hardover)
       Post #: 227

RE: Official HDX-450 Thread - 12/11/2007 5:51:03 PM   
Cyclic Hardover



Posts: 7221
Joined: 5/7/2002
From: New Mexico, USA
Status: offline 		Well Ijust talked with the guy I bought it from up in Washington State. He did not even see this and also the replacement shafts are not recessed all the way around but with only two simple flat spots, one on each side for the screw to set into. So with this, I decided to take a small file and file me a flat spot on each side for the screw to seat better.

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       Post #: 228

RE: Official HDX-450 Thread - 12/11/2007 6:20:48 PM   
restinpieces


 

Posts: 114
Joined: 3/19/2007
From: phoenix, AZ, USA
Status: offline 		you might want to consider filing the flat spot lower so you can get the shaft down tight against the brg. any up/down play is gonna give you unwanted changes in blade pitch in flight. plus, the shaft will be turning IN the brg instead of the brg itself turning.
or, get a new shaft. i just know you don't want any play in the main shaft.

i'm still building my hdx450sev3. my set screw tightend in the middle of the flat.

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       Post #: 229

RE: Official HDX-450 Thread - 12/11/2007 7:29:13 PM   
MMatheny


 

Posts: 805
Joined: 1/23/2003
From: Dickinson, TX, USA
Status: offline 		OK - why are some setscrews tightening in the right place, and some are not? Guess I'll pull mine out and file the flat spaces lower so it will be setting right. I have been having an ongoing conversation with HeliDirect - they are supposed to be shipping me out a replacement shaft, but I don't think that's the issue - both the original shaft (with the groove all the way around) and the replacement I ordered with my kit (with the 2 flat spots) the recessed area is in the exact same spot on the shaft! But, in case I'm halucinating, I'll triple check again!

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"Never use your shins as a blade tracking device" - Mike

(in reply to restinpieces)
       Post #: 230

RE: Official HDX-450 Thread - 12/11/2007 8:15:49 PM   
Cyclic Hardover



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Joined: 5/7/2002
From: New Mexico, USA
Status: offline 		Seems like a simple solution is to just file a flat spot.

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       Post #: 231

RE: Official HDX-450 Thread - 12/17/2007 4:48:07 PM   
MMatheny


 

Posts: 805
Joined: 1/23/2003
From: Dickinson, TX, USA
Status: offline 		Will the T-Rex main gear fit the HDX450?

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"Never use your shins as a blade tracking device" - Mike

(in reply to Cyclic Hardover)
       Post #: 232

RE: Official HDX-450 Thread - 12/18/2007 3:21:00 AM   
Cyclic Hardover



Posts: 7221
Joined: 5/7/2002
From: New Mexico, USA
Status: offline
quote:

ORIGINAL: restinpieces

you might want to consider filing the flat spot lower so you can get the shaft down tight against the brg. any up/down play is gonna give you unwanted changes in blade pitch in flight. plus, the shaft will be turning IN the brg instead of the brg itself turning.
or, get a new shaft. i just know you don't want any play in the main shaft.

i'm still building my hdx450sev3. my set screw tightend in the middle of the flat.


Yeh I did that and i think its okay.

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       Post #: 233

RE: Official HDX-450 Thread - 12/19/2007 4:53:55 PM   
driftair



Posts: 233
Joined: 11/3/2003
From: Milwaukie, OR, USA
Status: offline 		Hi Everyone,

I think I have seen postings that say HDX-450 is the same as CopterX with a different name.

Can anyone who has both helis confirm this or describe the differences between the two?

Thank you

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       Post #: 234

RE: Official HDX-450 Thread - 12/19/2007 8:17:50 PM   
MMatheny


 

Posts: 805
Joined: 1/23/2003
From: Dickinson, TX, USA
Status: offline 		Quick glance the CopterX has graphite frame - the HDX has phenolic - no interference, and much stronger.

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Mike
"Never use your shins as a blade tracking device" - Mike

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RE: Official HDX-450 Thread - 12/20/2007 2:43:48 AM   
austintyler


 

Posts: 66
Joined: 11/27/2006
From: Scottsdale, AZ, USA
Status: offline 		The CopterX is a direct copy of the Trex SE. The HDX has its own frame design with a head that is very similar to the Trex and thats about it for similarities. However a lot of parts of the Trex are compatible with HDX but all the parts of the copterX are compatible

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RE: Official HDX-450 Thread - 12/20/2007 3:04:02 PM   
MMatheny


 

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Joined: 1/23/2003
From: Dickinson, TX, USA
Status: offline 		The HDX450 uses the SuperFrame - it's about $70 at HeliDirect by itself!

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Mike
"Never use your shins as a blade tracking device" - Mike

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       Post #: 237

RE: Official HDX-450 Thread - 12/20/2007 3:47:07 PM   
driftair



Posts: 233
Joined: 11/3/2003
From: Milwaukie, OR, USA
Status: offline 		So I gather that the HDX has a stronger frame while Copter X has a strong frame and is fully compatible with TREX.
That makes Copter X seem like the reasonable way to go.

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We attract what we think, feel, and express, therefore, a good focus is; clarity, love, peace, creativity, wealth and health

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       Post #: 238

RE: Official HDX-450 Thread - 12/20/2007 4:04:11 PM   
TrumpetRhapsody



Posts: 509
Joined: 10/18/2006
From: Fayetteville, AR, USA
Status: offline 		That's a questions better asked in a CopterX thread, not the HDX thread!

My view on it is that CopterX is still make... by Walkera. I've owned a walkera, and wasn't impressed with their quality. I have no first hand experience with the X, but that's my bias. I love my HDX, and replacement parts are 90% compatible with the Trex, and if not they're still cheap through helidirect. IMHO

< Message edited by TrumpetRhapsody -- 12/20/2007 4:05:11 PM >

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       Post #: 239

RE: Official HDX-450 Thread - 12/20/2007 4:09:16 PM   
driftair



Posts: 233
Joined: 11/3/2003
From: Milwaukie, OR, USA
Status: offline 		Thanks