RE: MX450 XS Discussion Thread  
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RE: MX450 XS Discussion Thread - 7/21/2008 2:31:50 AM   
cflytrap


 

Posts: 139
Joined: 3/10/2008
From: Salem, OR, USA
Status: offline 		Ok so I got around to pulling the bolt on the bottom of the mainshaft/main gear. The bolt is in great shape. No thread wear at all really and very straight.

It is just so sloppy in the hole of the mainshaft, which also shows no signs of wear. I bought a piece of 1/16" and 1/8" aluminum tubing from my LHS to try to fabricate a sleeve that the bolt fits into, and fits into the hole of the main shaft itself. I managed to drill out the inside diameter of the tubing enough and I got the bolt thread in. I cut the tubing to a manageable length and put it in my dremel motor and I am trying to sand off some of the outside diameter of the tubing. I still cannot get it to fit in the hole in the mainshaft, and the tubing has become very very thin from fabbing on it. I have also invested about an hour of my day at home messing with this and my wife wants me to take her to the local art show

I will probably spend a few more minutes working that aluminum tonight. I just know I'm gonna sand thru the darn thing. Does anyone have any other ideas? I almost thought about making a sleeve out of aluminum foil wrapped around a bolt that I can bind together with a little thin CA glue. Has anyone ever tried such a thing?

Anyone know McGuyver's e-mail ?

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Might as well face it, I''m addicted to Hubs.

(in reply to cflytrap)
       Post #: 1376

RE: MX450 XS Discussion Thread - 7/21/2008 11:47:34 PM   
cflytrap


 

Posts: 139
Joined: 3/10/2008
From: Salem, OR, USA
Status: offline 		I was drinking my $3.50 cup of joe this morning and realized that the red coffee sipping straw might be the right inside and outside diameter to shim this jesus bolt issue I am having

I'll report back on that later hehe

_____________________________

Might as well face it, I''m addicted to Hubs.

(in reply to cflytrap)
       Post #: 1377

RE: MX450 XS Discussion Thread - 7/22/2008 12:13:54 AM   
Ductapemaster


 

Posts: 14
Joined: 1/29/2006
From: Laguna Hills, CA, USA
Status: offline 		Hmmm...sounds like you either need a new main shaft (worst case) or you have the wrong size bolt. Mine fits in there nice and snug and I have no play coming from there. I would pull the main shaft completely out of the head and see if the holes are the same size on both ends. The main shaft is symmetrical so you could also check the bolt in question against the one that holds the head to the shaft.

Good luck!

-Dan

(in reply to cflytrap)
       Post #: 1378

RE: MX450 XS Discussion Thread - 7/22/2008 3:28:52 PM   
cflytrap


 

Posts: 139
Joined: 3/10/2008
From: Salem, OR, USA
Status: offline 		Ok here is the funny part. The screw threads into the main gear and anti rotation sleeve is snug and its sloppy in the main shaft hole. Maybe one of the components in question isn't a mx450 part but a "not-so-compatible" trex part or something of that nature. The heli was used, from a friend. I think I am going to replace the mainshaft and bolt, gears and collar with fresh helimax parts.

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       Post #: 1379

RE: MX450 XS Discussion Thread - 8/5/2008 6:41:58 PM   
fetrix


 

Posts: 20
Joined: 3/2/2006
From: Mexico City, MEXICO
Status: offline 		Hi
You might not remember me but you gave me some advise. ( pages 19-22 in this forum) I wanted to buy an mx 450 and i did (thanks to this forum actually) but there is a slight problem... basically i didn't trust my building experience so i went to one of the local hobby shops and they said they could build it for me for 100 bucks ( with programming and everything) so i agreed since i did not want ANYTHING TO GO WRONG so i gave them my radio and heli and they told me come in 3 weeks.. after three weeks they did not have it ready, then i went on vacation so i couldn't put any pressure on these guys. then my mom calls me ( I'm 16 by the way) and she tells me the hobby shop called.. they said something like this " your son used the wrong equipment on his heli he used an airplane motor instead of a heli motor ( ****??) , so now you have to pay 450 dollars if you want that fixed, 350 for fixing it with the new parts and 100 for us building it, he used too advanced equipment for the heli.".. You can imagine how mad i was, here in mexico, all the hobby stuff is exactly two times more expensive than the US.... i mean they wont give my heli back if i dont pay them, so my question is did i use the wrong motor? i used the recommended ammo motor, a futaba 401 gyro, 2100 GP battery, a GP 45 amps ESC and the "Mini Heli Performance ServoSet by JR " i checked with JR and the tail servo does work with the gyro. Anyway any recommendations?? i think that all of the equipment I used was ok, but do you see any mistakes?? anyway thanks a lot
Fetrix

(in reply to cflytrap)
       Post #: 1380

RE: MX450 XS Discussion Thread - 8/5/2008 11:37:13 PM   
osterizer


 

Posts: 1532
Joined: 3/10/2007
From: Sykesville, MD, USA
Status: offline
The "too advanced" part is silly, but the 3400g servo looks like you'd need to use an Align pushrod and boom mounts rather than putting it in the original servo location with the stock pushrod- it won't fit in the frame. As for using an airplane motor in the heli, if you're using the recommended Great Planes Ammo 28-45-2700 motor, then that argument is off. It could be that they meant the ESC- I don't know of any GP helicopter ESC, and way back when you were looking at a Castle Phoenix.


quote:

ORIGINAL: fetrix

Hi
You might not remember me but you gave me some advise. ( pages 19-22 in this forum) I wanted to buy an mx 450 and i did (thanks to this forum actually) but there is a slight problem... basically i didn't trust my building experience so i went to one of the local hobby shops and they said they could build it for me for 100 bucks ( with programming and everything) so i agreed since i did not want ANYTHING TO GO WRONG so i gave them my radio and heli and they told me come in 3 weeks.. after three weeks they did not have it ready, then i went on vacation so i couldn't put any pressure on these guys. then my mom calls me ( I'm 16 by the way) and she tells me the hobby shop called.. they said something like this " your son used the wrong equipment on his heli he used an airplane motor instead of a heli motor ( ****??) , so now you have to pay 450 dollars if you want that fixed, 350 for fixing it with the new parts and 100 for us building it, he used too advanced equipment for the heli.".. You can imagine how mad i was, here in mexico, all the hobby stuff is exactly two times more expensive than the US.... i mean they wont give my heli back if i dont pay them, so my question is did i use the wrong motor? i used the recommended ammo motor, a futaba 401 gyro, 2100 GP battery, a GP 45 amps ESC and the "Mini Heli Performance ServoSet by JR " i checked with JR and the tail servo does work with the gyro. Anyway any recommendations?? i think that all of the equipment I used was ok, but do you see any mistakes?? anyway thanks a lot
Fetrix


(in reply to fetrix)
       Post #: 1381

RE: MX450 XS Discussion Thread - 8/5/2008 11:43:04 PM   
dpleasants


 

Posts: 39
Joined: 1/6/2008
From: Junction City, KY, USA
Status: offline 		Sounds to me like they are just trying to rip you off. All your equipment sounds just fine for the heli.

_____________________________

David Pleasants
AMA No. 902968

(in reply to osterizer)
       Post #: 1382

RE: MX450 XS Discussion Thread - 8/6/2008 12:06:42 AM   
fetrix


 

Posts: 20
Joined: 3/2/2006
From: Mexico City, MEXICO
Status: offline 		Hello
thanks for replying, i forgot to mention that I used boom mounts for my helicopter, I couldn't get a castle creations ESC here in Mexico so i got the best option which seemed to be the "Great Planes Silver Series 45A Brushless ESC 5V/2A BEC " that may be what they are arguing it thought it would work ... Next Monday i will be picking it up, hopefully i can get my heli out of that shop for the least price possible.. and dpleasants, I completely agree with you..

(in reply to dpleasants)
       Post #: 1383

RE: MX450 XS Discussion Thread - 8/18/2008 3:43:58 PM   
bilsue2005(crash)


 

Posts: 47
Joined: 9/26/2007
From: Petersburg, TN, USA
Status: offline 		I just bought one and Im using an e-flight 25amp esc, the stock motor, pkz1060 servo's, a 2200pkz battery esky gyro and a stock radio and receiver from a honeybee king 2 (yeah im broke) Any setup advice would be great.

(in reply to []TEX[])
       Post #: 1384

RE: MX450 XS Discussion Thread - 8/19/2008 3:37:13 AM   
osterizer


 

Posts: 1532
Joined: 3/10/2007
From: Sykesville, MD, USA
Status: offline 		Man, sorry to tell you, but you're probably going to be disappointed- the King2 has a different swash setup than the MX so the mixing is likely to be wrong and you can't change it with that radio. I really don't think that setup is going to work out.

(in reply to bilsue2005(crash))
       Post #: 1385

RE: MX450 XS Discussion Thread - 8/19/2008 4:00:02 AM   
bilsue2005(crash)


 

Posts: 47
Joined: 9/26/2007
From: Petersburg, TN, USA
Status: offline 		I looked at that real close. The ele is on the back of the mx450 while on the honey bee is in the front if I reverse the ele and ail and leave the pitch on normal it should work out I dont fly in idle up any way (im a beginner) so as long as the squash is level I shouldn't have any trouble scale flying. (correct me if im wrong) I have all of the servo's lined up on my pool table the way they would be in the bird and the way I have the honeybee radio set up. When I throtle up all three squash servos are moving in the same dir. I give it left ail the left side goes down and the right side goes up. the rear (ele) stays when I pull back on the ele the rear goes down and the front two go up and when I push the ele the front two go down and the rear goes up. I might not get the correct pitch but, the bird should still fly right?

(in reply to osterizer)
       Post #: 1386

RE: MX450 XS Discussion Thread - 8/19/2008 4:34:06 AM   
osterizer


 

Posts: 1532
Joined: 3/10/2007
From: Sykesville, MD, USA
Status: offline 		Maybe you can get it to work- dunno, never tried that setup . But 450 sized helicopters are dangerous animals if you have control problems. I'd be anxious about it.

(in reply to bilsue2005(crash))
       Post #: 1387

RE: MX450 XS Discussion Thread - 8/25/2008 2:25:24 AM   
fetrix


 

Posts: 20
Joined: 3/2/2006
From: Mexico City, MEXICO
Status: offline 		Hello everyone,
I finally got my helicopter out of that hobby shop ( i had to threaten them with a lawsuit) and a friend helped me set it up properly, the guys at the hobby shop broke my ammo motor and ESC so they installed an ALIGN motor and esc... Anyway I tested it on Friday ( just hovering) and on Saturday I started doing some mild sport flying... I am speechless, what an INCREDIBLE HELI!!! I will probably upload some photos soon. I haven't tried auto rotations yet, some people at the flying field said that the heli was too small to autorotate properly, any comments??
thanks,
fetrix

(in reply to osterizer)