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View Full Version : HDX500SEV2 spool up issues


earle
05-04-2008, 08:37 PM
I have a problem on spool up. before the rotor even gets up to speed, I get a 'glitch'. The tail kind of kicks, like the gear hits something or the belt is catching itself. I have ckecked the main gear, re-tensioned the belt and checked for binding issues on the head and tail. I have not even had it off of the ground yet, I need to hover so I can set up the tail for mechanical center. Also, when the tail kicks, it coincides with a motor sound, that is why I describe it sounding like the main gear hits something. Any help would be greatly appreciated.

HDX500SEV2
Align 75A speed control
Medusa BEC
HS-85MG
6100T

Earle

Greg Alderman
05-04-2008, 09:08 PM
Earle...are you using the Align 75A is normal mode or gov mode? Does it continue doing it or does it continue as it continues to spool up? Sound more like an ESC issue that anything else...I have never used the Align ESC but maybe that kick is the ESC going out of softstart??? If you are in gov mode and you have a "throttle curve" instead of straight line you might see something like this also...

earle
05-04-2008, 09:38 PM
Yes I am using the Align 75A controller. I do not have it in governor mode, and yes, it continues to do the same thing if I contine to spool up. I am not sure how to test an ESC?

earle
05-04-2008, 09:41 PM
Also Greg, Thanks for all your help getting me directions to the warehouse to exchange my incorrect parts. Great customer service!

earle
05-04-2008, 10:05 PM
I just went out and powered up the copter ro double check my ESC settings. Upon powering up, the ESC only goes through the first three settings ( confirmation tones), and doesn't confirm the 3rd setting. I guess my esc is probably bad. I will contact HD tomorrow to work out a replacement.

earle
05-16-2008, 10:19 PM
Just an update: The ESC was not bad. I did not have the tail belt tight enough and it was catching itself. I did not realize it would have to be that tight.( I am stoopid) I do have another 'concern' though. The swashplate is 'reversed'? when it travels up, pitch decreases? therefore to go right the swash has to tip left? and to go left, move to the right? I hate to prove my ignorance, but a main shaft, feathering shaft, tail boom and 2 sets of blades have allready proven my ignorance in this matter.

Heli Paramedic
05-17-2008, 03:47 AM
Earle,

If your head is the Trex stlye, you need to have trailing edge control on your main blade grips so that you get positive pitch when the swash moves up. For your left/right and fore/aft cyclic just go into the swash mix menu on your radio and reverse the values for aileron and elevator so that the swash moves in the correct direction. ie if the aileron or elevator swash mix has a positive number, change it to negative or vice versa. hope this helps.

Heli Paramedic
05-17-2008, 03:49 AM
Also Earle download and watch the Finless videoes for CCPM setup. The head on the HDX 500 (if you have the T rex style) is identical to a Trex, so these videos will show you all you need to know.

Regards.

earle
05-17-2008, 07:40 AM
Paramedic,
It is the Trex style head, but it is set up for leading edge control, I assume this is why everything is reversed. Everthing moves the same as on my trex, except the blade grips move opposite of the way they move on the rex

Heli Paramedic
05-17-2008, 05:29 PM
My HDX 500 came with the head backwards also. Make sure that the flybar seesaw is not upside down also when you flip your grips also.

earle
05-17-2008, 08:43 PM
Thank you paramedic, Yes it is backwards, and I have allready swaped it around after looking at the version 1 manual. I also received an e-mail from Mr. Alderman with a picture to make sure I have it right.
Thanks for your help

Heli Paramedic
05-20-2008, 10:14 PM
You're welcome

gpach
06-29-2008, 02:08 AM
I am at the point where I am assembling the head of a new HDX500 SE V2.

I have the head assembled per the SA manual and along the lines of a Trex. I have it set up for lagging edge control. The problem I am having is the links going up to the blade pitch arms a way to short. With the top arm and flybar horizontal there a lot of + pitch. When I move the swash up from there. I notice that the flybar teeter eventaully interferes with the link coming up from the swash.

Is there a manual out for this or some closeup pictures of the head posted somewhere on the forums.

Lastly, the flybar cage to teeter assembly has some lateral slop. Is there suppose to be some small washers in the kit to take care of this. ?

Thank
Greg