Sonerai.net - Home of the Sonerai Community

General Category => Sonerai II Airframe Discussion Board => Topic started by: jamdfingr on Oct 09, 2017

Title: Trailering Wing Cradle
Post by: jamdfingr on Oct 09, 2017
Hi All,

I have just finished building my trailer and am wondering how many of you use the wing cradle in the plans to secure the wings and ailerons during transit?

Do you just pin it through the wing and hope it doesn't wobble around too much or does it need something to secure it at the top?

Any additional advice on how you secure the wings and ailerons from flopping around would be greatly appreciated.

Cheers,

Luke.
Title: Re: Trailering Wing Cradle
Post by: Soneraifred on Oct 09, 2017
Hi Luke,
If you are going to use the standard wing fold mechanism, you need to tie the two rear spars together, and lock the ailerons so that they don’t flop around.
Title: Re: Trailering Wing Cradle
Post by: jamdfingr on Oct 09, 2017
Thanks Fred,

Is there an easy way to do that?

I assume for the rear spars that just a piece of rope (or bungy cord) through the bolt eye would suffice.

However for the ailerons, there isn't much to grab a hold of securely. Would I need to rivet some sort of tab at 90 degrees for somewhere to tie it down?

Thanks for the help,

Luke.
Title: Re: Trailering Wing Cradle
Post by: Soneraifred on Oct 11, 2017
Luke:
I think you need to tie the rear spars together rigidly, and lock the ailerons so they can't move.  I've attached a photo of the setup that I used 30+ years ago when I moved my airplane to the airport for the first time.  I'll admit that I didn't build it.  It was made by another Sonerai builder who had access to a machine shop.  It worked very well.  I think you can dream up something similar, maybe made of wood, that would work as well.
Title: Re: Trailering Wing Cradle
Post by: jamdfingr on Oct 12, 2017
Thanks Fred,

I had looked at that sort of a possibility so good to see it works in practice.

As you said, perhaps something in wood may work well.

Cheers!
Title: Re: Trailering Wing Cradle
Post by: schines on Oct 15, 2017
Luke,
I guess it depends on how far you have to go, but I made the metal frame specified in the plans for the wing tips and a wood jig to secure the rear spars for a cross country trip in the back of a U-Haul. I'm not sure which failed first, but both ended up breaking in transit and caused major wing damage. More details on that if you like, but based on my experience, I will remove the wings for long trips from now on.
Scott
Title: Re: Trailering Wing Cradle
Post by: jamdfingr on Oct 15, 2017
Thanks for the input mate, luckily I don't have to go too far.

For the long trip we did to get the plane home, I used ample amounts of duct tape front and rear to hold the wings and ailerons in place with a bit of rope between the rear spars to keep them together.

The failure that I had was the mount that held the bar through the tail.

Luckily, I noticed that it had failed at the terrible weld put on from the previous owner and before it could really bounce around in the trailer, I managed to secure the tail wheel to a wooden bracket instead.

My current plan is to drive less than 10km to the local airfield when I want to use the plane.

So will put a frame together to secure the rear spars and hopefully pin the ailerons to stop them from flapping around.

Would be much nicer to have a hangar there though...

Luke.