Okay I am putting together my first ARF nitro model which is a .40 tower trainer, I just hinged my aileron's tonight and I'm somewhat concerned I may have to much gap between the control surface. I know to much can cause the ailerons to flutter, I measured the gap and it seems to be about a sixteenth of an inch, to an eighth of an inch gap, maybe less it was kinda hard to tell. Anyways I was worried becasue now it cant be undone! So let me know what you think.

With a trainer that won't really reach a high top speed and has small control surfaces it's not really a big deal. No matter how small my gap is I always seal my gap with packing tape or covering.

Austin

Your gap is not a problem. Actually if you used CA hinges this is preffered. Have fun and fly!

I never thought about packing tape! Thats a good idea, yet I was concerned because I built a GWS formosa and I had the same problem with flutter, thanks for you help!

The control surfaces are relatively small on the trainers.

Don't bother with the hinge seal, you will not need it.

If anything the slightly bigger gap will help prevent the servos from binding up as there will be better movement on the CA hinges.

Read and bookmark this page for the next time you have to install CA Hinges:

http://www.rcuniverse.com/magazine/a...?article_id=55

Dadgum it Minn, when are you guys going to make a sticky "The ins and outs of RC Aviation" and just keep adding chapters to it? Thanks for the link..

forgot to mention, I use an old exacto blade in the handle, and just touch the point to the hinge, dropping the CA on the wide edge of the blade,(have the point of the CA bottle touch the blade works very well), it wicks down to the tip, and into the hinge. This technique has eliminated the spatter of CA drops on the surface, and so far, has put all the CA where I wanted it to go.

Actually, if you go to RCU Magazine (Click the Magazine tab at the top) You can search articles by type.

Select "How To" and hit the serach button and lots of good info will pop up

I'm sure it's not a new idea, but I use 5 minute epoxy on my CA hinges. It gives me a few minutes working time to get things just right.

Not a new idea indeed but a bad one none the less. Epoxy just doesn't penetrate and adhere to CA hinges as well as CA. This is why they are called "CA" hinges and not simply "Hinges".

Yea, bad idea

If you want to use epoxy, buy hinges that are designed for epoxy

Ya epoxy is a no no, I learned the hard way on my first build, I was using the supplied paper hinges that came with a formosa kit I was building and epoxy, well to make it short, it sure did hold but it was so stiff I couldnt move my control surfaces. So it all just went down hill from there.