Roof loading (on roof bars) concerns

[Sertao]

https://gyazo.com/65ff3b63624e0d976880676f7f58e7db

I am a little 'worried' about the design for the roof load bar. I am sure that loads will be set by weight, but there are occasional issues with placing loads on a rack, where you might have a small impact from the load onto the bar, such as lifting a kayak in the wind, and it drops harder than it should, or similar. The placement of these supports make me wonder if I will be subject to 'too easily' cracking my windshield.
Doesn't the location seem a bit odd???

 

[AZFox]

I'm wondering how many people would click that link.

 

[wellwater]

The horned look is a little odd too. It does look like the curve of a canoe could possibly hit the roof without some additional blocking to lift it up. I've been going back and forth between this rack, the one that covers the roof or nothing on the roof and two towers.

 

[WolfWings]

That 'front bar only' seems more intended for mounting a lightbar, or to be paired with the 'tower rack' options, most likely the twin tower racks with the cross-bracing between them as you end up with three equally spaced crossbars at equal height then.

 

[Driven5]

Vehicles less than 6k GVWR are federally required for the roof to deform less than 5 inches with 3x the vehicle weight (~12k pounds for Slate) diagonally applied to the roof edge from this contraption...

I would not worry about a little bounce from any kayak you're capable of lifting on to the top of the racks.

 

[kvermeer]

Vehicles less than 6k GVWR are federally required for the roof to deform less than 5 inches with 3x the vehicle weight (~12k pounds for Slate) diagonally applied to the roof edge from this contraption...

I would not worry about a little bounce from any kayak you're capable of lifting on to the top of the racks.

FMVSS 216a:

https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.216a

Note that doesn't mean you can mount a 12,000 lbs cabin cruiser on your roof rack. It's not required to be functional after this test, and the frame is resting on a cradle not the suspension.

I shared this image from Alameda on the other thread:

I'm sure the grommet gets removed and a fastener connects rigidly to the steel to transmit vertical loads. The rear is an oval with room for more fasteners, but the front may be just a single bolt, which means that some of the twisting loads would be borne by the roof itself. That could be why they have those large "horns".

If you want more weight capacity, get the full rack.

 

[truckful of coconuts]

Aloha from Hawaii, first post here
I'm hoping I can use my existing Halo rack (currently on my tacoma) on my slate, if not I will probably have a new one built, love having both bed access (without hitting my head) and the ability to strap on lumber, pipes, surf boards etc, as a bonus it also protects the back window.

 

[DaveHathaway]

Aloha from Hawaii, first post here
I'm hoping I can use my existing Halo rack (currently on my tacoma) on my slate, if not I will probably have a new one built, love having both trackbed access (without hitting my head) and the ability to strap on lumber, pipes, surf boards etc, as a bonus it also protects the back window.

Aloha, welcome!

 

[KevinRS]

FMVSS 216a:

https://www.ecfr.gov/current/title-49/subtitle-B/chapter-V/part-571/subpart-B/section-571.216a

Note that doesn't mean you can mount a 12,000 lbs cabin cruiser on your roof rack. It's not required to be functional after this test, and the frame is resting on a cradle not the suspension.

I shared this image from Alameda on the other thread:

I'm sure the grommet gets removed and a fastener connects rigidly to the steel to transmit vertical loads. The rear is an oval with room for more fasteners, but the front may be just a single bolt, which means that some of the twisting loads would be borne by the roof itself. That could be why they have those large "horns".

If you want more weight capacity, get the full rack.

Is that a grommet, or is it a bolt similar to the ones visible on the side panels, truck bed, and inside the cab?

 

[kvermeer]

Is that a grommet, or is it a bolt similar to the ones visible on the side panels, truck bed, and inside the cab?

I suppose I don't know, it looks like a grommet to me but I didn't take the picture. Perhaps someone in Portland tomorrow can answer more definitively! It's going to be a good day!

 

[Driven5]

Note that doesn't mean you can mount a 12,000 lbs cabin cruiser on your roof rack. It's not required to be functional after this test...

After 5" of deformation, I guess that depends how 'functional' is defined.

 

[MrTom]

https://gyazo.com/65ff3b63624e0d976880676f7f58e7db

Doesn't the location seem a bit odd???

Location looks good to me. I want maximum front to rear span. I doubt either Slate rack can match the 40" span of my 4Runner but the Slate rack with the bar on the cab looks solid and capable.

 

[kvermeer]

Location looks good to me. I want maximum front to rear span. I doubt either Slate rack can match the 40" span of my 4Runner but the Slate rack with the bar on the cab looks solid and capable.

Front to rear is critical!

You can dramatically exceed 40" by placing a ladder rack at the back of the bed and the front crossbar at the front of the cab, just going off a 1440 pixel wide side-profile known to be 174" long I estimate about 90" in that configuration. Super solid!

 

[Sertao]

Aloha from Hawaii, first post here
I'm hoping I can use my existing Halo rack (currently on my tacoma) on my slate, if not I will probably have a new one built….

if you’re lucky, you can just use the bolts with the slates track system. I hope the dimensions work out for you…