RE: 5945 "Too Tight"?  
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All Forums >> Radios, Batteries, Clubhouse and more >> RC Radios, Transmitters, Receivers, Servos, gyros >> Radio Manufacturer Direct Support >> Hitec/MultiPlex Radios- Ask Hitec Customer Service >> RE: 5945 "Too Tight"?
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RE: 5945 "Too Tight"? - 7/9/2004 8:26:29 PM   
DENNIS C



Posts: 2965
Joined: 7/8/2002
From: frisco, TX, USA
Status: offline 		Tom let me ask you sonething. do you really think that someone is going to put a 35%'r together and not take special care in what there doing. yes everything has been checked out. i can see if it was just one person having a problem. but it's not.

As far as your posting you seem to be sticking up for hitec. i had a buddy that had a problem with the new carbonite gears in his servo. and you jumped all over him with a negative reply.


so that means if your not having a problem then just keep your comments to yourself


Im done here till mike has a reasonable reply. other then saying send them back to hitec. cause i really dont think thats going to get a answer of what the real problem is

< Message edited by bodymann -- 7/9/2004 2:29:04 PM >

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RE: 5945 "Too Tight"? - 7/9/2004 8:31:14 PM   
SMALLFLY-



Posts: 2150
Joined: 12/9/2001
From: Evansville, IN, USA
Status: offline 		I must say I do find it a bit irritating that a jump on hitec mentality seems to exist on this board. BTY I do have 33% extra and it has all hitec servo's. I dont remeber "jumping all over anyone" either. Quote the post if you like. But since a positive response offends you I will say no more

< Message edited by SMALLFLY- -- 7/9/2004 3:34:37 PM >

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RE: 5945 "Too Tight"? - 7/9/2004 8:31:41 PM   
macanaw


 

Posts: 39
Joined: 11/16/2003
From: Draper, UT, USA
Status: offline 		SmallFly,

Refer back to my original post. I have some equipement that is behaving strangely. It makes me a little nervous. Since this is the place to ask those from Hitec about their product I am doing so. It is also good to find out if this is issolated or if others are having similar issues.

I look foreward to hearing further from Mike on this subject.


btw,

I am not bashing Hitec, almost all of my servos on my planes and heli are Hitec. I love the product and use it for them for a reason.

< Message edited by macanaw -- 7/9/2004 8:33:34 PM >

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RE: 5945 "Too Tight"? - 7/9/2004 8:32:51 PM   
DENNIS C



Posts: 2965
Joined: 7/8/2002
From: frisco, TX, USA
Status: offline
quote:

ORIGINAL: shortman

My Hitec 5645 and 5945s are all very tight. My surfaces don't droop and there is no bind. Mine don't even do the infamous digital buzz. Whatever works thought. I would just go fly it


LOL.......... what the hell are you talking about you dont even fly your plane. maybe you and tom should get a room together

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RE: 5945 "Too Tight"? - 7/9/2004 9:20:51 PM   
MikeMayberry



Posts: 2864
Joined: 1/15/2002
From: Poway, CA, USA
Status: offline 		What course of action do any of you suggest we take? The claim that some servos have more resistance with the power off cannot be duplicated through our testing here. Can any of you verify that there is more resistance on some servos more than other WITHOUT having your linkage hooked up? Typically the coreless motor in the 59XX series servos has little resistance but that does not make it better or worse.

I'm open for suggestions... we have seen no indication that these "stiffer" servos are defective and failing. If any of you want to label them and send them back to us to check out we would be happy to do it. If there is a problem here we will solve it, but so far we have not seen indications of what is being discussed here.

Also... please keep the bashing of peoples comments to a minimum.

Mike.

< Message edited by MikeMayberry -- 7/9/2004 10:11:30 PM >

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RE: 5945 "Too Tight"? - 7/9/2004 10:32:20 PM   
Nogyro



Posts: 1992
Joined: 11/30/2001
From: Puryear, TN, USA
Status: online
quote:

ORIGINAL: macanaw
2. The "stiffness" in the servo can and will create a problem in the event a servo fails or becomes disconnected from the reciever. The force of air against the control surface willl not be sufficient to push the surface to a neutral position. This defeats the purpose of having balanced surfaces and i.e. seperate servos for each elevator half. The surface would be "stuck" in what ever position it was last in creating a situation that may not be recoverable.



macanaw,

I've got four 5945's in my WildHare Edge. First digitals I've ever owned in my 11 years of rc. 3 are tight and one is free moving. The free moving one is on one of my elevator halves. With power off, the weight of the elevator will make it drop down. The other 3 are on the ailerons and other elevator half, they are tight with the power off and hold the control surfaces up. I had an aileron come unplugged the other evening and other than feeling sluggish, I couldn't tell any difference. Went ahead and landed as normal. Fixed the unplugging problem though. I've got 40 or so flights on the digitals and all is fine.

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RE: 5945 "Too Tight"? - 7/10/2004 7:23:24 AM   
macanaw


 

Posts: 39
Joined: 11/16/2003
From: Draper, UT, USA
Status: offline 		Good to hear Nogyro. I feel a little better hearing that.

Mike,

One thing i can do is put the 5945 from one plane that is "free moving" and place it in my other plane on half the elevator opposite of the "tight" 5945 and shoot a little digital video of result and send that to you. At that point I could send the servo's to you for examiniation. It's the only thing I can think of. Let me know if that would be helpful to the folks at Hitec. As I mentioned before, I am not here to **** or complain but in search of an answer.

< Message edited by macanaw -- 7/10/2004 7:24:14 AM >

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       Post #: 32

RE: 5945 "Too Tight"? - 7/11/2004 1:31:13 AM   
fcawth



Posts: 38
Joined: 5/4/2003
From: Beltsville, MD, USA
Status: offline 		I am fairly certain that the cause is a tighter than normal motor. This makes the output of the servo seem quite a bit tighter, since the "tightness" is amplified by all of the gears. I took my tight one apart and everything seemed fine up to the motor. I have one tight and one loose on my elevator halves, and flight performance seems OK up to this point. I have about 15-20 flights on the plane now. One thing that I might do sometime is measure the current going through each servo when they are cycling with the control surface disconnected. If the tight one is drawing significantly more current, then I might be concerned. On mine, it seems like there is more "slop" in the tight ones, but I think this is because it takes more force to turn the motor. I don't think that there really is more slop, just that the looser ones can more easily spin the motor when being driven in "reverse" from the output shaft.

Are these servos "tuned" at the factory (i.e deadband, control loop gains, etc..) or does each one get programmed with the same default values???


Hope this makes some sense,

FC

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RE: 5945 "Too Tight"? - 7/13/2004 1:34:49 AM   
PlaneKrazee



Posts: 3541
Joined: 5/15/2002
From: Westerly, RI, USA
Status: offline 		I think you should worry more about your reaccuring servo disconnection than the servo's tightness. Recently a Carden 40%er went in shortly after takeoff because one of the elevator halves was not connected, the pilot could not save it, it snapped in. The servos? Expensive JR.

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RE: 5945 "Too Tight"? - 7/13/2004 1:42:04 AM   
PlaneKrazee



Posts: 3541
Joined: 5/15/2002
From: Westerly, RI, USA
Status: offline 		macanaw,

I too notice the only posts you have made here on rcu are to complain about Hitec. If you have a problem send the servo into Hitec as advised, then maybe we will all get an answer.

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RE: 5945 "Too Tight"? - 7/13/2004 4:38:37 PM   
MikeMayberry



Posts: 2864
Joined: 1/15/2002
From: Poway, CA, USA
Status: offline 		macanaw - If you want to send in the servos we would be happy to look at them.

Mike.

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RE: 5945 "Too Tight"? - 7/13/2004 4:41:58 PM   
macanaw


 

Posts: 39
Joined: 11/16/2003
From: Draper, UT, USA
Status: offline 		Once again I need to state, I am not complaining about Hitec servos. I have Hitec servos in all my aircraft.

I simply have a question about some servos I purchased recently that behave much different than other servos of the same model number. As mentioned in a previous post I would be happy to send back the servo as long as Hitec is interested in finding an answer. I would prefer to exchange these servos so that I can continue to fly my plane while this Hitec looks into the issue. But as of yet there has not been a response from Mike. I hope to here from him soon.

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RE: 5945 "Too Tight"? - 7/23/2004 6:04:52 PM   
DENNIS C



Posts: 2965
Joined: 7/8/2002
From: frisco, TX, USA
Status: offline 		Well my problem is solved. i replaced my NEW 5945 which was stamped mar 02 and replaned it with a new 5945 stamped with the v 1.03 on it. my elev does not humm at center no more and does not bounce when it comes back to center. also when the system is powered off the elev stay's level with the other side.


I dont know what is wrong with the other servo i took out but like i said it is NEW, im thinking a bad pot. what do you think mike mayberry. other then that it still works maybe i'll put it on a rudder of a smaller A/C.

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RE: 5945 "Too Tight"? - 7/25/2004 11:32:38 PM