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12-12-2004 02:16 AM  13 years agoPost 1
skypup

rrVeteran

San Antonio, Texas

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I was repairing my heli after a servo failure crash and found the motor (Himax) is toast. After backing the motor away from the main gear the shaft turned hard and I found I could slide the motor shaft forward. It ran until cutoff (governor) so it really took a beating. I thought of many options but since I don't fly 3D I ordered another from RCHover. Hope I won't regret it. It worked well befor the crash.

SKYPUP

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12-12-2004 01:47 PM  13 years agoPost 2
doorman

rrProfessor

Sherwood, Arkansas

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Himax/Problem
I had a similar problem with my motor except that mine caused the crash.... everything was running fine and just as I got to the top of a loop, I had a slight jump in the heli and as it went over the top the blades stopped.... I must say it was probably one of the best figure nines I have every done!!!!!!!!!
When I picked up the pile/heli I noticed that I could not turn the main gear or head, but just thought that something had broken inside and was stuck... but as I took everything apart I found that the motor was what was stuck.... I have no clue what happened to it, or what caused the problem, because it has been running great and I was quite happy with it... in fact I have another on it's way too.... So I have the service form filled out and will ship it off on Monday to see what they have to say... but like I said it has been a good motor up until now, but it only really has about 1 1/2 to 2 hours tops on it....
OH WELL!!!!!!!!!!!! Let's see what happens....

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-12-2004 02:50 PM  13 years agoPost 3
Charley Stephens

rrVeteran

Trussville, Al.

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I had 2 of them die first one the shaft fell out the second one siezed up luckly I was only in a low hover both times. those motors had less than 30 min time on them and my LHS sent them back for replacements but now I have a third and final himax on and have about 6 hours time on it and still going strong.

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12-12-2004 03:02 PM  13 years agoPost 4
copperclad

rrElite Veteran

NY

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hi
i have been running a himaxx 3200 on a 9 tooth pinion since spring and it has been flawless

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12-12-2004 03:10 PM  13 years agoPost 5
doorman

rrProfessor

Sherwood, Arkansas

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STUFF HAPPENS
It just goes to show that mistakes can be made.... it seems to be part of the hobby that we have to deal with... cost of saving money I guess....????
I am definetly willing to continue to use them... As I said, it was doing great till something broke, and that can happen to anything...

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-12-2004 05:25 PM  13 years agoPost 6
Jim Cimino

rrKey Veteran

NE Pennsylvania

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Servo failure...yea right. I have had two Himax quit in a month. The first I am not sure why, the second was on its first flight when I hit the blades on my work bench and crashed. Only damage was the foam blades...and the motor. The motor would not turn and the shaft moves up and down. I'm sure a maganet fell off in the motor. This is a common problem with Himax. I sent them back and have not heard anything yet...it's been five weeks. I am flying a Hacker now and it is the best money I've spent. It does not even notice changes in collective.
Jim

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12-13-2004 12:30 AM  13 years agoPost 7
turboomni

rrProfessor

East of the Equator

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With the Himax motor do you all have to use a heatsink?
If magnets are falling off it could be amongst other things a heat issue.
Are there airvents in these motors or are they completely sealed?
If they do get good and warm even with a heat sink then it stands to reason that there's alot more heat in there that the heatsink hasn't had a chance to dissipate yet and a magnet loss would be a possibility.
You all by now know what I'd say for a motor. 400DH
Just some random thoughts.

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12-13-2004 01:50 AM  13 years agoPost 8
doorman

rrProfessor

Sherwood, Arkansas

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Heat Sink
turboomni,

I myself have had the heat sink on the motor since day one....
and I have checked it every flight to make certain that heat was not a concern and have never not been able to hold my fingers on the heat sink... so I really do not feel that heat had anything to do with my failure...
it is a solid case motor, and maybe the internal heat could have done something...... but my 400dh is being packed by Vinnie as you are reading this..... And thanks for the info and suggestion....

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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12-13-2004 01:54 AM  13 years agoPost 9
turboomni

rrProfessor

East of the Equator

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Hey good move going for the 400DH!! Let me know how you like it!

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12-13-2004 03:45 AM  13 years agoPost 10
Jim Cimino

rrKey Veteran

NE Pennsylvania

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I also had a heat sink on mine from day one. Checked the motor after each flight and I don't remember it ever getting over 135 F.
Jim

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12-13-2004 04:55 AM  13 years agoPost 11
turboomni

rrProfessor

East of the Equator

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If it didn't get real hot[over135 F.] then it may be a factory defect I guess.
Some guys have had really great luck with these motors and others for seemingly no reason have them crap out on them.
I had a Himax motor on a high performance glider.
I used a Castle Creations 45 on this motor. The motor had air going over it with ducts just behind the spinner etc. BUT a high performance glider does not need constant power like a heli. You climb and turn it off the prop folds and fly awhile. I used a Hymax for this glider and a big 8 cell Nicad pack. I would land and change the pack and check the motor,,,always hot. No room for a heat sink here. This was a geared motor also. I thought it was too hot but it never gave me any problems,,,it's up for sale now as high powered gliders didn't float my boat,,at least this one. I had more fun with my gentle lady I built about 15 years ago! I used a big bungie high start and sometimes just barely got the thing back it was so high!!! 45 minute flights in the summer weren't uncommon,,,but that's another subject.

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12-13-2004 10:33 AM  13 years agoPost 12
doorman

rrProfessor

Sherwood, Arkansas

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Keep it Simple
Some times the "old" stuff did work better!!!! 45 minute ride is a long flight!!!! and FUN....and that is what is missing some times...
As far as the motor quiting... stuff happens.... the way things are made today, somtimes I wonder if failure isn't part of the design...???? But for the most part, I would say that the reliability of our equipment is outstanding and getting better daily... to me electric is an entire new ball game and let the "trials" begin... we are the R&D department... like it or not...I'm just glad that I am not one of the guys that has a $1500.00 unit sitting there figuring out which battery/motor combo "might work".... but they are doing the same thing, just on a much larger scale... and you can bet that I am watching and reading their comments too.
There are a lot of Himax combos out there and to hear of a few failures, just has to happen... just part of the game..
I will have (2) of them again soon and you can bet they will not be on the table for long... but I am also looking forward to being able to compare the (2) types/designs.... So on with the show....!!!!!!!!!!!!

AMA 2918-Team Spin Blades,,Castle Creations, Unique Aircraft

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