Strengthening the rear wing mount...

[2001ultima]

Has anyone come up with a good way to strengthen the rear wing to body mount. The mount should be as strong as possible. If I can wiggle the mount I wonder what is happening when there is 200+ lbs of down force. Suggestions or photos? See the photo below I found but I think the mount needs to be welded to the plate that is in the photo to consider it strong.

[F.C.]

If you can wiggle the pylon something's not right, I assume you have the pylon to chassis load strut fitted underneath?

[2001ultima]

F.C. said:

If you can wiggle the pylon something's not right, I assume you have the pylon to chassis load strut fitted underneath?

Yes, the triangular sheet metal provided by Ultima that bolts under the rear clip from the wing mount to the side if the rear clip. I'm looking for it to be real solid where it would feel comfortable pushing the car by the wing mounts it needed.

[F.C.]

2001ultima said:

Yes, the triangular sheet metal provided by Ultima that bolts under the rear clip from the wing mount to the side if the rear clip. I'm looking for it to be real solid where it would feel comfortable pushing the car by the wing mounts it needed.

Ah! sounds like mine are different, they triangulate down to the clam hinge on a sort of bearing so load is transferred directly to the chassis

[Graham-P]

F.C. said:

Ah! sounds like mine are different, they triangulate down to the clam hinge on a sort of bearing so load is transferred directly to the chassis

That's how they should have been manufactured in the first place. Look at the base of the pylon on any rear clip and I bet you that there is cracking of the fibreglass around that area.

[The Italian]

Graham-P said:

F.C. said:

Ah! sounds like mine are different, they triangulate down to the clam hinge on a sort of bearing so load is transferred directly to the chassis

That's how they should have been manufactured in the first place. Look at the base of the pylon on any rear clip and I bet you that there is cracking of the fiberglass around that area.

This concerns me, has the factory improved this in any way?? What do the instructions give?

[2001ultima]

F.C. said:

2001ultima said:

Yes, the triangular sheet metal provided by Ultima that bolts under the rear clip from the wing mount to the side if the rear clip. I'm looking for it to be real solid where it would feel comfortable pushing the car by the wing mounts it needed.

Ah! sounds like mine are different, they triangulate down to the clam hinge on a sort of bearing so load is transferred directly to the chassis

F.C., can post a few photos of the support you have, sounds custom. Thanks, Jim

[2001ultima]

F.C. said:

2001ultima said:

Yes, the triangular sheet metal provided by Ultima that bolts under the rear clip from the wing mount to the side if the rear clip. I'm looking for it to be real solid where it would feel comfortable pushing the car by the wing mounts it needed.

Ah! sounds like mine are different, they triangulate down to the clam hinge on a sort of bearing so load is transferred directly to the chassis

F.C., Can you post a few photos of the support you have, sounds custom. Thanks, Jim

Here is a photo of the triangular support I have. Look toward the back of the photo.

Edited by 2001ultima on Sunday 6th July 03:57

[The Italian]

I see the bracket, thanks. Still wondering how it can take all the downforce off the clam though, and if it is not making contact by a fraction, some force is transferred to the clam until it contacts and these small cracks occur.
My Z car had a foil rather than a wing and was bolted to the rear metal hatch, but before I glassed it in smooth I raced it. The bolts actually pulled out 3 mm

[ROWDYRENAULT]

My thought on this issue is the bond between the alloy brace and the fiberglass strut it's attached to. I used a very high strength 2part epoxy and a fair amount of high shear rivets.. I thought as long as the load is transferred correctly that all would be well and 6 years later this has proved to be true. If I saw croaks around the base of the wing mount my suspension would be that the loads are not being supported by the brace onto the strut but only being carried by the deck. Lee

[The Italian]

Found 2 pics of a GTM low profile bracket

[F.C.]

2001ultima said:

F.C., Can you post a few photos of the support you have, sounds custom. Thanks, Jim

Here is a photo of the triangular support I have. Look toward the back of the photo.

Edited by 2001ultima on Sunday 6th July 03:57

Will do, my car is away having some service work and mods done at the moment.

[2001ultima]

This looks like a real nice setup. It's for a GTM but a good idea and totally a direct wind to chassis support. The only draw back is you need to remove the wing before opening the rear canopy.

http://vraptorspeedworks.com/vrsw-universal-wing-m...

http://vraptorspeedworks.com/quick-disconnect-pins...

[F.C.]

2001ultima said:

This looks like a real nice setup. It's for a GTM but a good idea and totally a direct wind to chassis support. The only draw back is you need to remove the wing before opening the rear canopy.

http://vraptorspeedworks.com/vrsw-universal-wing-m...

http://vraptorspeedworks.com/quick-disconnect-pins...

looks like it's left hanging out at the rear of the mount a bit, having said that quite substantial so I'd imagine flex won't be an issue, definitely a step up in material terms over the Ultima fayre.

[The Italian]

[quote=F.C.][quote=2001ultima]This looks like a real nice setup. It's for a GTM but a good idea and totally a direct wind to chassis support. The only draw back is you need to remove the wing before opening the rear canopy.

You would think, but no you pull the pins, tilt the wing and the canopy opens. Of course this is the GTM, not Ultima. Not to say it cannot be done
Depends on where it is mounted and how high in relation to the amount of lift needed near the hinges(where the clam stops)
Better yet, Tilt the wing , not the bracket, install the pins at the inboard (front) of the wing(not at the base mount) This way no show monkey would see/swipe your pins, keep your wing on during service?

Edited by The Italian on Wednesday 9th July 13:59

Edited by The Italian on Wednesday 9th July 14:10

Edited by The Italian on Thursday 10th July 05:30

[MarkWebb]

I am thinking of a support frame underneath the clip which stays in place when clip is opened but gives good support to the wing. My radical has this with some lugs that come up through the clip with pins to hold it in place when clip is closed. Hard rubber bushes underneath.