How do you tie cables to the helicopter frame when you only have one hole.

You could go through the hole and over the side of the frame,  but this would not be very neat or often practicle.

So here is what I do.  Imagine the piece of plywood with the hole in it shown below is the the helicopter frame.

The first thing I do is take a cable tie and tie it around the cable in question as shown below.  It does not need to be over tight.

Next I put the free end of the cable tie through the hole in the frame as shown.

Now you want the end of another cable tie (good use for cable ties you have cut off).

Take this end and but it on the cable tie that you put through the hole, making sure that you have it the right way round, i.e. the ratchet goes on the side with the ridges so that it will lock.

Now all is reuired is to trim of the spare cable tie end.

and here is the finished product.