Personal hitec 5955 test!!!

[Eagleburger]

	Quote: Originally Posted by Extra260
	If I am reading your ruler right that is 2.5" from center???

They are centimetres. It is 52mm diameter= 1" radius.

[RMaia]

	Quote: Originally Posted by Kiwi
	I would bet my bottom dollar his problem is not Servos but VOLTS!!!!!!!

Or flex in the linkage or, more likely still, a servo mounting point not stiff and rigid enough. This is specially tricky if it's on a foam core surface...

Although a mistake much less likely to be commited on a gasser setup, I did experience first hand the effects of a not properly setup linkage on my 90 sized glow profile. I put a HS 645MG servo on the rudder, which by it's torque specs is more than enough, however during KE loops I found myself adding more and more rudder to keep the plane from sinking and eventually I reached the end of the stick travel and the plane was still sinking with the rudder nowhere near the deflection it should be having....

On a closer inspection on the model, the reason came up. During setup, I had a "brain lapse" and ended up using a nylon 2-56 clevis on the linkage. No wonder, the clevis literally bent under the loads. Good thing that it didn't break right away.... Below is photo evidence.

Now, using a nylon clevis on a gasser is something very unlikely to happen, but then your main culprits may be volts, as Kiwi said, servo mounting point and flex in the pushrod itself...

[Kiwi]

One of the great things about the internet is the ability for it to share enormous amounts of misinformation. Its actually fantastic to see how the wrong stuff gets shared instantly and fast while the truth very rarely if ever makes it to the front page.

That is not insinuating that people lie or intentionally promote the BS. But it happens.

As for Joe Hunt saying what he said well I suppose its hard to say bad stuff about free or promotional hardware. Thats another thing that the internet is great for spreading, Opinions, not facts.

Guys this is one of those good threads where people are trying to prove the facts by testing in a semi scientific and repeatable manner.

Keep it up.

[jonkoppisch]

A guy at our field has a 35% carden edge with 5955's all the way around. He's a pretty good pilot. He uses standard throws as he's not doing any 3d. He found that at the first of the flight he had ok rudder to do knife edge but later, after a minute or so, he wasn't able to hold a knife edge. On the ground, he had plenty of rudder, the mech advantage was RIGHT, plenty of battery power etc. He started researching and found the servo test. He contacted tbm and decided to test it by replacing just his rudder 5955 with a 8711. He says that he can't believe the difference, that now he has no problem doing knife edge etc threw the whole flight.

WHAT THIS MEANS.

Was the 5955 able to fly the edge, yes. He could have just thrown another 5955 on the rudder and probably been fine. He just thought that maybe he wasn't doing something right (piloting skills) or that something was wrong in the plane, linkage or whatever. Most people may never notice as they may not push the plane hard enough to tell, or may not even realize that they're getting blowback (that the servo isn't holding the surface in the deflection that the radio is calling for)

He went from looking like a so so pilot that wasn't able to control the plane good enough for the maneuver to a good pilot that held the lines (pattern or imac wise)

What I'm saying is that you may not realize that you're lacking in power when you really are, maybe not always to this extreme, but that it can definitely effect the planes capabilities & yours. Same thing with Butt on the knife edge circles, same thing when he described doing rollers and trying to reverse them and found that it flopped a little on the reverse...

If the only thing that you've ever drove is a vw beetle you'll think that's great, until you get behind the wheel of a Porsche (little exaggeration but I think you can understand the point) If you don't know what you're missing then you wont miss it

You may think it's one of your limitations when it really isn't.. You're telling the plane to do it but the plane just isn't capable of responding, or responding in a timely matter...

Added: Now what I hate is this. If the 8711 which tbm rated at a constant 280 is that much more powerful and able to do that much better, imagine what the 5955 would do if it actually came close to the 333 specs or even 280!!!

[Extra260]

With a one inch arm it is some what close to 280

[buttface]

	Quote: Originally Posted by Extra260
	Here are the vids. YouTube - 5955 testing 2 YouTube - 5955 testing

I see your 5955s are lifting weights! are they getting stronger yet?
I did some more testing yesterday with my 5955s(3 on rud) watching the rudder go flat in the last quarter of a knife edge circle !Maybe they need to start hitting the bench for a good workout.

[Extra260]

Yes they are. You can also get servo steroids from your local drug dealer. My servos can curl more than me now. But for real, you should post pics of your set up because it is not normal for servos to be that weak. 3 of them should be way more than enough.

[jonkoppisch]

They took a poll Buttface. They decided that you don't know what you're doing, that your linkage is wrong, your battery setup isn't good enough & that you don't know what you're doing. Servo power is NOT an option so it must be you!! You probably faked your video too!!!!

[mikedannielle]

Oh boy . This is really gonna get interesting now!!!!!!!!!

[Extra260]

	Quote: Originally Posted by jonkoppisch
	They took a poll Buttface. They decided that you don't know what you're doing, that your linkage is wrong, your battery setup isn't good enough & that you don't know what you're doing. Servo power is NOT an option so it must be you!! You probably faked your video too!!!!

Boy john, You just look for trouble dont you!!! I dont really remember that poll

[Extra260]

And if anything we are trying to help the guy figure his problem out not point fingers???

[jonkoppisch]

Hey, that's what everyone came up with right.. Can't be lacking servo power, after all, you did the tests. Everyone said that it must be his linkage or battery power, or maybe he just has the horn mounted in foam and it's giving

He told you what his problem was but you wouldn't believe him but... I can understand why he wouldn't have a clue

Well, I'm going flying!!! Get out of here before Buttface blasts me.....C YA