Hitec 5245 on cyclic not matching

[Socal500]

I just got a swash leveler today and was checking for level and interaction. After getting everything correct I moved the collective up and down somewhat fast.... about like doing tic tocs. I noticed a gap between the swash tool and the swash during this. I thought at first the swash tool may have been lagging behind so I put pressue on it to make sure it was not. It looks like each of the servos is moving a different speed under fast input. The gap on one point being larger than the next and then the last one keeping contact.

I had noticed in my tic tocs that the tail was dropping after flipping over inverted and then pushing back and the difference Im seeing on the swash tool would definitely cause this.

Im sure there are few pilots out there that have checked for level swash using the tool but would like to hear from some tyring the same thing I did above... ie moving the collective at a faster pace.

[mattkreps]

Make sure you are not making the servo horns to tight and also work out your ccpm interactions per bobs vido

[mk1spitfire]

hi tech produce a servo machine programer for sell.

[Socal500]

Its not tight links or servo horns and I used the trueblood leveler for interaction. Swash keeps contact on all three points from top to bottom. I think its just crap servos. Once I speed up collective input to a level you might use for slow smooth tic tocs, I can watch the swash plate waving. Im seeing this will absolutely no load.. other than the swashplate itself. Under load I imagine it could be even worse.

[Socal500]

I checked for the same thing on Ctrimruns 500. He is using the same servos and we saw that same exact thing. Prior to this we checked for interaction using the swash tool and his was almost dead on, needing just a click or two on one servo. Definitely some interaction going on that cannot be corrected in the radio. We are ditching the 5245s.

[ZipZap]

Don't see that at all on my 5245's. I did make sure that the speeds and endpoints were all the same at the servo level with a programmer. Don't know if that makes a difference, as the defaults should be consistent.

[Hangarace]

5245's are not equal...period. Besides the known issues with them they are terrible when trying to sync them. If you have a servo programmer that will help if not then follow Bobs video for the interaction and adjust those endpoints accordingly. I run them also, but personally I think they are Junk. I am looking for a better replacement

[Socal500]

We put in three 9650 servos and what a difference. Im going to check a third trex 500 with 5245 servos in the next day or so. If I see the same thing on that 500 as I did on the other two I can only believe its a common problem. I will try to record it and do an overlay on the video so the motion can be picked up.

[Socal500]

Checked out another local 500 with 5245's on cyclic. Same exact thing. The pilot PMed me and asked to me to point out what I was talking about. When he got to my place we removed the rotor head and just left the swash. I moved just the cyclic up and down and sure enough you could see the swash wave. You could see it from all directions but on his it was more from to back. Just to show it was not an illusion we put the TB Swash tool on and held it against the swash with light pressure. Moved the stick up and down and could clearly see random uneven servo speed.

Thats three different 500's with three different sets of 5245's. I was already convinced after checking just two 500s and swithcing to 9650's and they operated flawlessly. Seeing it on a third just confirms that its obviously a common deal on the 5245.

[lowflyer101]

I was flying my friend trex 500 with futaba 9257 all around, it had sharp control on cyclic lot feel lot better than my trex 500 with hitec 225 on cyclic.

[robmoney]

I was lucky enough to know a guy that let me borrow one and it is worth the cost to actually buy if you keep the Hitec's around anyway...

It allows you to set the travel limits IN the servo so no matter the radio input the servo is limited by the travel you set.

Also, the deadband was not set at the lowest and this is what I felt was different in the way they flew after re-programming them. Programmer demos the difference in deadband setting and it is really amazing.


Neat options in th programmer and it is worth having... By the way, I have zero interaction....

[Socal500]

Ahh I see.. to get the servo to work correctly you have to buy the programmer :roll: .. or just get the 9650 :)

I understand what your saying but I can almost guarantee I can find this uneven motion on any 500 using 5245's.. programmed or not. What I am referring to will not be fixed by EPA. Maybe the deadband setting would make a diff but I dont see how. The pilot of the last one I checked yesterday also said his was not doing it, until he got here and was able to point it out.

Not a bad servo but you can pick up the 9650 for $45 and no programming is required.

[JCP SR]

Alright NOW if I have these servos on my heli do I have to A. replace with different servo or B get a servo programmer. Or C is it fine to fly.????? also would this not be seen while looking for the interactions during setup?

[fireup]

Alright NOW if I have these servos on my heli do I have to A. replace with different servo or B get a servo programmer. Or C is it fine to fly.????? also would this not be seen while looking for the interactions during setup?

...

[JCP SR]

Thanks Kevin I am tired of buying parts when I could be buying batteries

[helis101]

Alright NOW if I have these servos on my heli do I have to A. replace with different servo or B get a servo programmer. Or C is it fine to fly.????? also would this not be seen while looking for the interactions during setup?
C Its fine to fly, i have these servos and have no interactions what so ever. I have checked all of my servos for waves interactions over 20 times with swash plate leveler i can not see any interactions ,when i do i will change theses servos but for now they work great for me.:thumbup:

[dieselracer]

IF you give it full + pitch and hold it there. with the tool on the heli. Is it level? is there a gap? also for full negitive? If theres a gap at full + then fix that with end points, and also check full negitive. Dont just check centerstick.

[JCP SR]

I have checked for interaction per Finless 450 video with bubble on the paddle I only had to make minor adjustment to the endpoints, less to the 500 then to my 450. Just a side note I am finding that the 500 is much easier to fly then the 450. My 450 has not came out of the case except for a few pics since I have had the 500 up and going my confidence is groing by leaps and bounds each time I put her in the air. I do believe I would have gave up on this hobby a long time ago if it was not for HeliFreak, I thank everyone whom takes the time to post there experiences and sharing their knowledge.

[erniefritz]

C. Fine to fly - There is absolutely no problems with the 5245 servos , I'm a futaba fan and have flown both , no difference.....

[ZipZap]

Ahh I see.. to get the servo to work correctly you have to buy the programmer :roll: .. or just get the 9650 :)

I understand what your saying but I can almost guarantee I can find this uneven motion on any 500 using 5245's.. programmed or not. What I am referring to will not be fixed by EPA. Maybe the deadband setting would make a diff but I dont see how. The pilot of the last one I checked yesterday also said his was not doing it, until he got here and was able to point it out.

Not a bad servo but you can pick up the 9650 for $45 and no programming is required.

I have the programmer and the swashplate is flat all the way through, even when moving the stick as quickly as possible.

The reason I got the programmer was so that I could run zero subtrim, and control the servo performance at the hardware level. This control is very important in RC car racing, as I can get perfectly symmetrical steering.

Do you remember if/how much subtrim you were using with your 5245's?

[Socal500]

Im not trying to solve it. I know the problem is there and have already fixed it by changing servos. If you have these servos and are not seeing it then you either got a better match of servos or .. your just not seeing it :) I have seen this now on 4 500's so Im convinced. One heli required just 2 clicks of EPA on one servo and I think 1 on another to get constant contact from full to low using the Trueblood Swash Tool. No subtrim used. At medium speed the servos do not stay in sync. It does with the 9650s. Thats all I need to know.

Im not trying to cause a panic either. If your happy with the way your Trex is flying then fly and be happy. If you dont already have these I suggest not buying them. I was happy to take a 50% loss on mine to get rid of them.

[bobby619]

I have the True Blood leveler, which i used to setup the head. But still, i cannot get rid of the interaction that happens when i perform a right roll in forward flight. Left rolls look clean, but right rolls look booty.

I dont know if its my thumbs. I can perform some really clean rolls on the 450.

[warpspeed]

What happened to the flamesuit smiley?
I've said it before, I'll say it again. Hitec servo's are CRAP, period the end. Always have been. They're only good for planks-and even then not at the highest levels of competiton. Totally blew my mind when I got into heli's and found out Hitecs were the heli pilot's servo of choice. Their ONLY advantage is metal gears-but that's going bye-bye as both JR and Futaba are finally releasing metal geared servos.
Yes, I run the stupid things in my 450 and 500, and after reading Socal's post I checked and sure enough mine do the same thing.
Oh well. Just a few more crashes and they'll need replacement anyway.

[helis101]

What happened to the flamesuit smiley? .What do you mean flamesuit im just giveing my opinoin on these servos im not saying there the best servo for the 500 what im saying is im not haveing any problems with these servos im not going to run out buy new servos because some one else is haveing a problem . Thank You

[CatchmyCorsair]

What happened to the flamesuit smiley?
I've said it before, I'll say it again. Hitec servo's are CRAP, period the end. Always have been. They're only good for planks-and even then not at the highest levels of competiton. Totally blew my mind when I got into heli's and found out Hitecs were the heli pilot's servo of choice. Their ONLY advantage is metal gears-but that's going bye-bye as both JR and Futaba are finally releasing metal geared servos.
Yes, I run the stupid things in my 450 and 500, and after reading Socal's post I checked and sure enough mine do the same thing.
Oh well. Just a few more crashes and they'll need replacement anyway.

But you have to admit, 65's are good! Futaba mini's could use a MG update and JR's are overpriced!