Hi Gang,
I have the plastic clevis pins and horns on all my planes.
I was told to replace them because they are known to have many failures.
I was also told that some types of screw lock connectors can work loose no matter how tight you crank down on them.
Any suggestions are appreciated.
Thanks

You really opened up a can of worms now!! I use metal Sullivan Gold clevises & the screw locks on throttle only. Z bends on 60 size & down planes on servo arms. >>>>>big max 1935>>>>>>

Hi big max
Well I have the TH catalog here.
I ordered over $100.00 in needed items so far.
The list is getting longer but with 4 planes and another on the way plus another being built I can't be short.
DUBRO has the screw locks for $7,50 for 12.
Not bad.
I also ordered serews,Ball wrench set,glow plugs,*T* pins and much more.
What I don't like about the plastic pins is that they use that small rubber ring to hold the clevis closed.
Best not to chance crashing over a cheap $1.00 part.
Thanks for the post

If you do use the SULLIVAN GOLD CONNECTORS get a package of extra lock clips, you will need them & they are cheap !MAX

As far as your question about plastic clevis on the trainers you fly plastic clevis are fine just cut a small piece of fuel tubing and slip it over the end of the clevis to act as a lock.

In many respects, the nylon pins are better than metal for safety and longivity. The metal pins wear much faster, I've acutally worn some in two over a couple years of use. The nylon wears much better. Now, there are some plastic clevises (not nylon) that are much weaker and I would not recommend them. If you stick to a well known manufacturer, you should have no problems. Just do as mentioned above, put a piece of fuel line around them to hold them together.

Rodney is right. The plastic pins tend to be smoother. I always use plastic clevises or a screw on ball link on any type of metal arm to avoid metal to metal contact.

FYI - I've been flying R/C since the 70's, have used a lot of plastic clevises and have NEVER had one fail for any reason. However, I do inspect them periodically and replace worn clevises as needed. A lot of guys build the plane and never look at any of the connections again ever. That's just bad news.

One last tip. The night before you go flying, pre-pre-flight your plane at home and look it over good. What I do is give them a good cleaning so they gleam real nice and make me proud. While I'm cleaning I look at everything and then I'm not distracted by others like I am when I do a pre-flight at the field.

I can honestly say I've found a lot of things that needed to be fixed or adjusted that I may have over-looked at the field in the rush to get into the air. For me it's standard operating procedure now. I can't remember the last time I lost a plane due to equipment failure. I wish I could say the same thing about my piloting skills.

PS. I've gotten some really cheap looking plastic clevises in kits. Those get discarded immediately. Dubro or Great Planes clevises are good brands and should give you no problems.

Whirley Bird : See what I meant by "a can of worms". It all comes down to what is your choice & what you have least problems with.>>>>>>>>big max 1935>>>>>>>>>>>>

Thanks for that TIP Crashman.
I was just looking through my O ring set I use for car A/C but concerned about them holding up against the fuel.
Good thing I thought of the fuel line HUH?

Well big max I have a bad habit of doing that but it's fun
Sure did get a lot of input