Is it safe to use a 4-40 ball link on the rudder servo instead of clevis?

Just to be on the safe side, you may want to put a flat washer on top of the ball link as a safety.

Those are Nelson RCL 70 ball links with a 4-40 flat washer over the top to be certain that the ball and socket joint will stay together no matter what.

I 2nd that. Ball links are great and very smooth.

Tell me that's not a 28% Extra with dual rudder servos.

I am using JR8611 on all control surface (28% edge). Should I put a flat washer over all my ball links or only the rudder servo?

I am going to see what what LHS have in stock
Daniel

Ball links are good on the rudder. In fact we just started upgrading the hardware kit to include 2 ball links for the pull pull setup.

TF

Scoubi,

Whenever I have a ball link that's not captured, as in the middle of a clevis, I like to add a flat washer over the top as a fail safe in the event the link gets rocked over so hard the housing pops off of the ball. If that happens, without the washer you're well and truly screwed.

The older Dubro links were quite prone to this. The newer ones are almost a direct copy of the RCL 70 ball link, and are MUCH better than they used to be. The JR plastic housing ball link is another that is more or less a copy of the RCL link, and well made.

So, places like the link to servo arm assembly on an aileron, rudder, or elevator servo is where I add a flat washer. With a clevis it's not needed, or really possible.

And you might consider using a self-locking 4-40 nut. I think it works
better than the standard nut provided and Loc-Tite.

Gerald

Gee, I just got mine a couple of weeks ago, and I didn't get the ball links!![&o]

Email me, I'll send you a couple.

TF

Tom
Which ball link are you going to include in your hardware kit? Hangar 9?
http://www.horizonhobby.com/Shop/ByC...ProdID=HAN3616

Daniel

So far we're using the Nelson/Rocket City RCL77s. We may also use the Dubro HD 4-40s, they work well and are sometimes more available.

TF

Thanks
I assume the flat washers suggested above are just another good protection but not absolutely required. I am going to use Hangar 9 ball links without washers but lock-nut +blue lock tite.

Note: bad news for me. I saw Silversurfer's white/red Gilles 202 in another thread. I will have to sell some stuff to get that beautiful plane!! The yellow/purple was not very attractive to me, just personal opinion!

Thank you for the flowers

Scoubidou...

Be very careful with the Loc-tite around Ball Links.
to much and you'll jam up the ball on the bolt. The
Nelson Ball Links provide the self-locking nuts.

Gerald

When you install the ball link, any Lock Tite used should be applied to the screw or nut after it has been run through the ball and servo arm. It's best to thread the ball link onto the servo arm and apply any thread compund to the screw on the side of the arm opposite the ball link.

Thread compounds can enter the race for the ball and restrict it's movement. It can also rapidly increase the wear of the plastic housing around the ball after it has dried. I've received some PM's about this before and almost forgot to mention it.

Thanks for the reminder, Rockyaged. Question, I believe it's your son that manufactures carbon fiber products. If so, how do I get in touch with him?

Silver..

Yes I am the proud Papa.. the URL for RCBlimppro is:

http://members.aol.com/rcblimppro/.

You might be wondering what Blimps have to do with
his business. Shawn flies Blimps for different events.
His past experience with them was with the San Jose
Sharks Hockey games. He flew a Blimp in the shape
of a Fly for the Dixie Chicks Fly Tour a few years back.
Currently flies a Blimp during half time ar the Golden
State Warriors home games.

Anyway, take a look at the site. An upgrade to a ..com
site is in the works, but a few weeks away.

I just finished my second WH Edge this afternoon and
will be maidening it tomorrow. I plan to pass on my
story, setups, etc. Will include pictures if I can figure out
how to post them here.

Gerry