EF Extra 300 104"

[3dmike]

Oh bummer! Sorry to hear about that man.

 

[gyro]

It came out ok, was just a lot of work.
I had to make some holes in the ailerons to get the junk out, so I've got a little patch work to do.


Hinge gap at the ends came out ok.

 

[3DeltaFly]

Well, one wings hinges got messed up. Some how, (I suspect I didn't do good enough Vaseline application) about 4 hinges got epoxy in them and wouldn't bend...

Oh man, that's a real bummer. I had the same thing happen to me.., once In my case it was the result of cleaning off excess uncured epoxy with alcohol. I inadvertently got the thinned epoxy mixture on several of the hinges pivot and it obviously penetrated into the knuckle gluing it tight. It was indeed a pain having to spend time to correct. The soldering iron trick is a gem.

Looking forward to you maiden flight report.

Byron C.

 

[nebwake]

That's why I use white gorilla glue. Never had a hinge come out on my 40% pilot. After you glue, simply use a q-tip with alcohol on it for 10 minutes or so wiping the over flow and you are good. If a bit gets into the hinge it will break away after its dry with a little flexing.

 

[3dbandit]

It came out ok, was just a lot of work.
I had to make some holes in the ailerons to get the junk out, so I've got a little patch work to do.
View attachment 20059

Hinge gap at the ends came out ok.
View attachment 20060
View attachment 20061

Ouch!

I have never had luck using vaseline.

I have switched to using Bearing oil and sometimes motor oil to keep the hinges clean.:thumbup:

 

[kevinjulieevan]

i like that tape idea to protect the control surface bevels from excess epoxy. i just did my first robart hinging this year and i think it was a chris jewett build video that talks about once you have epoxy in the hole and on the pin hinge you push the pins in only halfway and then wipe off excess and then push in the rest of the way. that helped me a lot because it significantly reduces the amount of excess epoxy that gets near the actual hinge. i do think that triflow/liquid lubricant helps protect the hinge a little better also since it soaks the hinge versus vaseline doesn't really seem to get in there well.

Well, one wings hinges got messed up. Some how, (I suspect I didn't do good enough Vaseline application) about 4 hinges got epoxy in them and wouldn't bend... Luckily the other wing and both elevators came out fine.

So I spent a fair amount of time last night with the soldering iron and drill, and removed what I could of the old hinges, and drilled out the holes.

I got the aileron rehinged last night, and I'll attach it to the wing this morning.

Big bummer overall, but I think I'll be able to hide the damage with some ultracote hinge sealing.

 

[RKEstes]

Ouch!

I have never had luck using vaseline.

I have switched to using Bearing oil and sometimes motor oil to keep the hinges clean.:thumbup:

Same here. Found this at my local hardware store and it is great stuff. The applicator tip pulls out about 10 inches for hard to reach stuff.

http://zoomixer.com/p/1151108/Panef%20Corp.%20F2-40%20Extendable%20Spout%20Oiler-%252d%252d-0O000OKZS6V98.html

 

[Airwayman]

Yikes, big bummer. I always clean my fingers and the hinges with alcohol. Then I carefully bend them and apply one drop of 30 wt. motor oil to the hinge line being very careful not to get any oil where it shouldn't be. Even then, when the epoxy is dry, there usually is some epoxy that gets into the hinge area. But, since it's oily it's easy to pick out the epoxy crumbs with a No.11 Xacto knife.

 

[gyro]

Yikes, big bummer. I always clean my fingers and the hinges with alcohol. Then I carefully bend them and apply one drop of 30 wt. motor oil to the hinge line being very careful not to get any oil where it shouldn't be. Even then, when the epoxy is dry, there usually is some epoxy that gets into the hinge area. But, since it's oily it's easy to pick out the epoxy crumbs with a No.11 Xacto knife.

Great advice and technique. I've been pretty happy with the Vaseline in the past, and in retrospect remember the epoxy was starting to get warm a little as I was doing the last few hinges. I think I just ran out of time.

 

[amstd7]

Thats happend to a few times too