GB for SLON Workshop CF Rear bulkhead, which can (optionally) be a back seat delete

[heinzboehmer]

Couldn't pass up the group buy price. Just signed up.

[Sharocks]

NVM, saw it listed as an option.

Hmmm, I do fold down the seats often tho to move stuff.

[SYT_Shadow]

For that price I want 1x1 CF weaves as an option.

I thought 1x1, 2x2 and 3x3 were options

[Sharocks]

I thought 1x1, 2x2 and 3x3 were options

1x1 is I just had to re-read it slower. They don't have any pics of it though. Also gluing it in seems more permanent than I'd like.

Decisions...

[SYT_Shadow]

1x1 is I just had to re-read it slower. They don't have any pics of it though. Also gluing it in seems more permanent than I'd like.

Decisions...

It's supposed to be removable with a heat gun, but while doing the job my brother and I joked that it's reversible like a vasectomy is. LOL

[CrisSilberGrau]

For a sunroof car, like most of the ones on here, whats the cost benefit of this vs the CSL/Karbonius roof.

[Sharocks]

For a sunroof car, like most of the ones on here, whats the cost benefit of this vs the CSL/Karbonius roof.

It doesn't cost like 4k to install, you don't have to remove your entire interior to do it and it won't yellow or haze because it's not outside.

[Lip]

It doesn't cost like 4k to install, you don't have to remove your entire interior to do it and it won't yellow or haze because it's not outside.

CF roof also doesn't cost $4k to install.... more like $2.5k with supporting parts... or $2K if you buy karbonius and don't buy CSL roof rails (because Karbonius has clips for stock roof rails)

[Obioban]

For a sunroof car, like most of the ones on here, whats the cost benefit of this vs the CSL/Karbonius roof.

The CF roof gains you 250 nm/deg. This should gain you ~7250 nm/deg.

And, yes, the total cost of the project should be 1/2-1/4 a CF roof.

[SandeepM3]

To anyone wondering, can you feel a 38-39% chassis stiffness increase? The answer is 100% absolutely yes. I simultaneously owned 2 e39s, with and without fold through seats, and could easily tell which was which from behind the wheel.

Can we prove it provides that stiffness? Seems like a bold statement otherwise just going off of a non fold down car.

[timmo]

Can we prove it provides that stiffness? Seems like a bold statement otherwise just going off of a non fold down car.

You can test it, but it's quite a bit of work. Basically replace the springs and dampers with solid blocks and use a large lever arm to apply a moment on one axle while keeping the other fixed

[Obioban]

Can we prove it provides that stiffness? Seems like a bold statement otherwise just going off of a non fold down car.

We have fold through vs non fold through statistics from BMW on e46 sedans:
E46 Sedan (w/o folding seats) 18000 nm/deg
E46 Sedan (w folding seats) 13000 nm/deg

This recreates the same structure as the non fold through e46 sedans, so I see no reason to think it wouldn't have a similar result.

That said, the only way to prove it would be to stick a car on a chassis twister before and after and measure. That seems unlikely to happen.

[terra]

We have fold through vs non fold through statistics from BMW on e46 sedans:
E46 Sedan (w/o folding seats) 18000 nm/deg
E46 Sedan (w folding seats) 13000 nm/deg

This recreates the same structure as the non fold through e46 sedans, so I see no reason to think it wouldn't have a similar result.

That said, the only way to prove it would be to stick a car on a chassis twister before and after and measure. That seems unlikely to happen.

I don’t know if we can assume it’ll be same percentage increase. It probably does add a fair amount of stiffness but it’ll be just about impossible to determine the true numbers for us mere mortals.

[ra2fanatic]

tempting....but gluing that panel in place....tough decision....

[Slideways]

Just curious, has anyone tried to remove structural bonding adhesive like this?