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New product: Super high tensile strength ball link

Old 03-06-2016, 05:19 PM
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olnico
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Default New product: Super high tensile strength ball link

Dear all.

This is a quick article on a new product that I wanted to share with you.
We are now offering to the market a new type of aerospace grade ball link in M3 and M4 size.

These are certified at 900 PSI tensile strength for the M3 link and 1000 PSI for the M4 link.





The balls/ sleeve assembly is of super tight tolerance and made of bronze.
The body is made of certified 316 Stainless Steel.

These are the strongest and most precise ball links you will find on the market and are perfect for razor sharp control actuation.
We recommend using our super high quality 316 Stainless Steel threaded rods to go with them.

Here is the link to the aerospace grade stainless steel ball link:
http://www.ultimate-jets.net/collect...inum-ball-link

And to the aerospace grade stainless steel threaded rods:
http://www.ultimate-jets.net/collect...l-threaded-rod

We will bring a couple to Florida Jets for demo...
Old 03-06-2016, 05:52 PM
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mr_matt
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Nice what is the diameter of the hole in the ball?
Old 03-06-2016, 06:56 PM
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ddennison
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Hi Oli,
Do these allow the ball to be pushed out by finger pressure like the ones on the MIBO A10 package?
They look very solid.
Thanks
Dave
Old 03-06-2016, 07:57 PM
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olnico
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Originally Posted by mr_matt View Post
Nice what is the diameter of the hole in the ball?
3 mm for M3
4 mm for M4

Thread on the female end is obviously M3/ M4 respectively.
The links are very compact yet we guaranty them for 900 lbs/ 1000 lbs respectively continuous load.
Braking load is 1350 lbs/ 1500 lbs respectively.

Our threaded rods are matching that resistance.
Old 03-07-2016, 01:10 PM
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Hello Dave. I checked them and I could not push the ball out the side with finger pressure. The "captive ring" holds them firmly in place on both sides. - Woody
Old 03-07-2016, 03:52 PM
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I don't know, maybe I'm just getting lazy as I get older, but I cannot see why the rod ends/ball links cannot be made in either a right or left hand thread and the same for the control rods e.g. a six inch rod would be have left threads and half right threads so they have infinite adjustment and you do not have to take the linkage apart to do those adjustments.
Old 03-07-2016, 05:43 PM
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DiscoWings
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Have used these before:

http://www.mcmaster.com/#59935k13/=11fxmdx
http://www.mcmaster.com/#59935k14/=11fxmzi

found them to be way overkill.
Old 03-07-2016, 07:23 PM
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lov2flyrc
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Originally Posted by Zeeb View Post
I don't know, maybe I'm just getting lazy as I get older, but I cannot see why the rod ends/ball links cannot be made in either a right or left hand thread and the same for the control rods e.g. a six inch rod would be have left threads and half right threads so they have infinite adjustment and you do not have to take the linkage apart to do those adjustments.
been manufacturing these for years in LH and RH thread for turnbuckle type linkage!
http://www.dreamworksrc.com/catalog/...keywords=Sg-bl
Old 03-07-2016, 09:15 PM
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olnico
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These are NOT Chinese made aluminium ball link, but aero grade American product.
The link is made from certified steel. It is rated in tensile strength and precision.
Old 03-07-2016, 09:33 PM
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Originally Posted by Zeeb View Post
I don't know, maybe I'm just getting lazy as I get older, but I cannot see why the rod ends/ball links cannot be made in either a right or left hand thread and the same for the control rods e.g. a six inch rod would be have left threads and half right threads so they have infinite adjustment and you do not have to take the linkage apart to do those adjustments.
This is available as well, but as a different custom product!
These require a M3 left/ right hand threaded and M5 left/ right hand threaded titanium rod that needs to be made on request on our CNC machines.
You need to specify rod length and thread length on order.

All ball links and titanium pushrods are made of aero grade material.

http://www.ultimate-jets.net/product...om-control-rod
Old 03-07-2016, 10:12 PM
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Originally Posted by Pantherman View Post
Hello Dave. I checked them and I could not push the ball out the side with finger pressure. The "captive ring" holds them firmly in place on both sides. - Woody
The link is certified at 0.1 mm lateral play and 0.035 radial play. Ultra high quality stuff.
The ball needs a lateral force of 500 lb to be chased off with heat applied. Its race/ retainer are hot pressed at manufacturing stage.

For people who want to be able to easily remove the ball link, we also have sleeve type ones. These are fully aero certified and used on our UAVs. We can provide them on request but I have not put them on our web site as they are out of the regular hobbyist price range.

Last edited by olnico; 03-07-2016 at 10:37 PM.
Old 03-07-2016, 10:37 PM
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Originally Posted by Alkaline View Post
Have used these before:

http://www.mcmaster.com/#59935k13/=11fxmdx
http://www.mcmaster.com/#59935k14/=11fxmzi

found them to be way overkill.
These are 2 component rod ends.

Ours are 4 component ball links.
The link body has a precision bronze race that is hot pushed in position, then a polymer liner is inserted ( giving the tight tolerance ), the chrome ball is positioned and a retained hot pressed on top.
Old 03-08-2016, 05:02 PM
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Zeeb
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Originally Posted by olnico View Post
This is available as well, but as a different custom product!
These require a M3 left/ right hand threaded and M5 left/ right hand threaded titanium rod that needs to be made on request on our CNC machines.
You need to specify rod length and thread length on order.

All ball links and titanium pushrods are made of aero grade material.

http://www.ultimate-jets.net/product...om-control-rod
Thanks Oli.
Old 03-08-2016, 07:20 PM
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lov2flyrc
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Originally Posted by olnico View Post
These are NOT Chinese made aluminium ball link, but aero grade American product.
The link is made from certified steel. It is rated in tensile strength and precision.
For the record, our ball links noted above are precision made 7075 T6 which have always been manufactured in the USA as well.
Old 03-09-2016, 04:46 AM
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schroedm
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Aren't we getting to the point though where the ball links may me extraordinarily strong so now the threaded rod, servo mount, servo arm, control horn, hinge etc will fail first anyway?
Old 03-09-2016, 06:58 AM
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Originally Posted by schroedm View Post
Aren't we getting to the point though where the ball links may me extraordinarily strong so now the threaded rod, servo mount, servo arm, control horn, hinge etc will fail first anyway?
Not exactly.

The threaded rods we sell are certified to 900/ 1000 lb load respectively as well.
http://www.ultimate-jets.net/collect...l-threaded-rod

Our Ultimate servo brackets have an internal shear strength of 500 lbs per side ( 1000 lb total )
http://www.ultimate-jets.net/collect...-servo-bracket

A good alloy servo arm and casing would hold that load ( although no hobby servo can hold so much torque ).

Structural elements can very often be the weak links in that case but proper designs do enable very strong structures.


Also the break load is not everything. Ball link body rigidity and ball clearance are playing a significant role in control flexibility ( introducing some degree of imprecision ).

As always, it's the rule of the chain weak link that prevails here.
What's the point using a titanium pushrod with an aluminum ball link at the end of it?
Aluminum modulus of elasticity is 10,000 ksi where titanium is 16,000 ksi.

I am working on developing a coherent line of aero spec products certified to hold very high loads. All these elements are designed to work together and make sense.
We are designing airframes that need this kind of load bearing...

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