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-   -   Pushrod Connectors? (https://www.rcuniverse.com/forum/beginners-85/9871300-pushrod-connectors.html)

krashkart 07-17-2010 05:50 PM

Pushrod Connectors?
 
I am at the point where I am ready to install the pushrod to my servo for my build.
They are calling to use one of the pushrod connectors (the ones that bolt to the horn and allow the wire to slide through).
I am not quite sure why they are calling for this and they were not supplied with my ARF needless to say. I will assume they are calling for these because they make it easier to adjust the control surfaces?
Why can't I just do the Z bend (I have the tool from my first simple build) and be done with it? Or is there some real advantage to having the sliding style connectors?

mclina 07-17-2010 06:13 PM

RE: Pushrod Connectors?
 
I prefer Z-bends, or L bends with keepers. I only use the sliding ones on my throttles. Just make sure you have plenty of adjustment on your threaded clevis before making the bend.

Good luck

MetallicaJunkie 07-17-2010 06:16 PM

RE: Pushrod Connectors?
 
http://www3.towerhobbies.com/cgi-bin...?&I=LXK099&P=7 make sure to use the metal retainer...the plastic one alone isnt enough


edit* on small glow stuff 40-60 i like L bends as well http://www3.towerhobbies.com/cgi-bin...&I=LXAZC3&P=ML

krashkart 07-17-2010 06:20 PM

RE: Pushrod Connectors?
 
OK, Iwill assume that it's just a matter of preference then?
I got pretty accurate using the z-bend tool on my first build (slow stick) and bought some extra wire and experimented until I got it right.
I think that just may be the way I go.
It just appears to me that the sliders are fine, but it also seems that there is more to go wrong.

Lnewqban 07-17-2010 06:30 PM

RE: Pushrod Connectors?
 
I would like to recommend this fine reading on the subject:

http://www.airfieldmodels.com/inform...ware/index.htm

krashkart 07-17-2010 06:41 PM

RE: Pushrod Connectors?
 
Thanks for the link~lots of information for a guy who has not built anything (other than the Slow Stick~does that really count??http://www.rcuniverse.com/forum/js/f...ular_smile.gif) in over 30 years. Lots of new terms and procedures to learn.



ORIGINAL: LNEWQBAN

I would like to recommend this fine reading on the subject:

http://www.airfieldmodels.com/inform...ware/index.htm

JohnBuckner 07-17-2010 06:53 PM

RE: Pushrod Connectors?
 
I use 'Easy Justs' only on throttles and mostly use Z bends with adjustable clevis on the opposite ends for most others.

w8ye 07-17-2010 07:40 PM

RE: Pushrod Connectors?
 
I do like John says and use Z-bends on the servo arms for the flight controls and a threaded clevis at the control surface horn.

I addition I like to use a 2-56 or 4-40 not to back up the threads on the clevis to avaoid vibration from wearing out the threads.

Also I like to use a short piece of fuel tubing slid over the fingers of the clevis to keep it closed on the control surface horn.

You need adjustment on one end

On the throttle, I use a Z-bend at the engine and one of those slide through connectors on the servo arm. These make it nice and easy to get the throttle mechanically trimmed before I adjust the trim on the transmitter. I like the metal retainers on the back side of the slide through connectors

Villa 07-17-2010 08:54 PM

RE: Pushrod Connectors?
 
Hi krashkart
So you are retired. So am I. Love it. I try to always use a "Z" bend on one end, and an adjustable clevis at the other end. After I lost my second plane when the plastic clevis failed on the elevator, I stopped using the plastic clevis with a piece of fuel tubing over the clevis to keep it from opening. That fuel tubing gives you a false security. How does fuel tubing fail in fuel service on our planes? IT EVENTUALLY SPLITS AT ONE END. We all know that. All of us know that, yet we will use a piece of fuel tubing (the stuff that splits in service) to help prevent the clevis from opening. When it is over stretched over a plastic clevis it may even split sooner. Now I only use the type of clevis, steel or plastic, that has a built in slide lock. Sure, they are expensive. So is a crash from a failed clevis. You can trust them and you can move them from plane to plane, which reduces their high cost. I use the plastic clevis on the throttle lever only. If I need more security at that point, I will tie things together with a string of dental floss, but never use the fuel tubing. I sure hope others will give this some thought and hopefully stop recommending the fuel tubing. Does this logic make sense to anyone? Comments? Do you love your retirement?

krashkart 07-17-2010 09:00 PM

RE: Pushrod Connectors?
 


It does to me. I will have to look into the metal oneswith the slide locks at the shop in the AM.
I have some metal ones left from my first build, but they don't have any locking devices. They do snap securely however, or so it seems.
Good idea, thanks.</p>


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