HI been using EZ's for 20 years without one problem on servo pushrods and engines ( 40 120 size planes all solid metal pushrods ) i only use the nylon hold on's never felt the metal would work-JUST ME ( and i can remove and replace the same nylon holder when needed ) Saw my fellow -very experienced- modelers using them this way guys flying for yearsTHE BEST OF THE BESTso i decided i would use them until one would fail-still waiting ! i do use the sullivan clips that hold the metal clevises closed at the engine arm along with the EZ - EZ's work GREAT and make mechanical adjustments to push rods EASY E you know before computer radios came along all adjustments to linkages were made MECHANICALLY believe it or not !! I still choise to do that from time to time to keep the sevos centered- never had one failand do not think i will from this point fowardENJOY REGARDS TONY

There are such things as "good engineering practices". What this means is that even though we may not suspect a problem can be developed by one thing or another, it's just good practice to avoid the situation.

Metal to metal is only inviting trouble of some sort or another. And, as stated, "good practice" would suggest that you avoid this. Why invite a situation that you just cannot explain.

We know that metal to metal causes problems with 72 MHz operation, so why invite trouble at any other frequency, even at 2.4GHz. The truth is, there is just not enough information out there that might suggest otherwise, but we know about 72 MHz. There are so many options that give you the way out, so I would suggest that you just use them and avoid potential problems. So, why invite problems?

Every plane that I put together now has all these considerations in mind. And you know what? I've never... NEVER experienced problems as may be suggested by metal-to-metal inteference, or pretty much any other interference. I just avoid these situations. It makes good sense, both engineering wise and what is practical to all of us.


CGr.

Easy conectors are soft metal and the stars are much harder. Just one reuse can show cuts in the soft pin that the star bites into. This creates a weak spot and an accident waiting for a place to happen. I have reused a few, but do a close inspection of the pin.

Ez connectors are trash, I lost one plane due to a failure and have seen several others go down and a few not even get off the ground. Arf producers love including them in their kits, they speed assembly and the eventual death of the model. Good for business
:-)

While there are those that refuse to use EZ connectors there are others that swear by them. Personally I won't use them on critical surfaces like ailerons or elevators, but that doesn't mean I won't use them at all. I use them all the time on throttle connections as they make it quick and easy to setup and adjust the throttle with the EZ connector.

Ken

They fail if they are improperly installed as with anything else.

They are "trash" if in the wrong or inexperienced hands... but then that is true of a lot of things.

If you are fearful of them, you can always install a second wheel collar behind the EZ connector for additional safety and still keep the ease of adjustments.

I'll put up an EZ connector against a plastic servo horn's tensile strength any day... the horn will always break first before a PROPERLY installed connector gives.... something which I've tested.

The EZ connector is made of all metal ( assuming you are using the star wheel retainers ) while the plastic servo horns are no where near as strong.

I believe you, Opjose; however, there is something that scares me when I look at the picture of your Post #10.

I agree with Ken, because I know that vibrations and friction don't mix.

That is what I dislike about EZ's, that they are based on friction of the bolt against the pushrod, and also that the force is not applied in line with the arm.

I also use them for throttle and even nose gear.

As stated above, to use one EZ next to the engine is a no-no for me.