Mercedes SLK World banner

Status
Not open for further replies.
1 - 18 of 18 Posts

·
Registered
Joined
·
2,205 Posts
Discussion Starter #3
I've drove the Asian cup version, but the black sounds a little more. I'm wondering if is actually structurally fixed to improve rigidity or just replaces the vario for weight savings.
 
D

·
Guest
Joined
·
0 Posts
You would think that if they removed all the roof gubbins then it would make sense to fix it structurally but then that in itself would add weight so i guess it depends how much stiffness they where looking for and what weight saving they wanted.
 

·
Registered
Joined
·
2,205 Posts
Discussion Starter #5
Yeah its a tough call as the chassis is already designed to support the lack of a box section. I'm guessing AMG get the chassis default from Merc and there no different from stock. Makes me wonder why the asian cup cars even have a roof.. they have a roll cage so just rip the roof out completely?
 
D

·
Guest
Joined
·
0 Posts
I am not 100% about the special versions of the 55 but the production ones come from the same line as the other SLK's with the BMW M3 CSL the chassis was exactly the same as the normal M3.

I guess it saves the cost of producing a whole separate one just for a few cars and as you say the chassis is already very strong so why bother with the roof removing it would save weight but i think its more for looks and the fact that the roof would the keep debris out should the car have an off but thats just a guess on my part i will look into it but its hard to get info about these types of cars as the are so few people who are briefed on it
 
D

·
Guest
Joined
·
0 Posts
You know that i was not dis-agreeing with you in my last post right easty i just meant that they probably share the same chassis as our cars do.

The roof does not look fixed in the pic you have posted you can see the seal running along the front edge thats not to say its not attached below however also i am not an expert on roll-cages luckily but would it not make more sense if the roof does contribute to the structure to re-enforce the roof and not have a whole separate cage inside the car i know that you would want something about the area where the B-pillar should be but how does it work exactly?
 

·
Registered
Joined
·
2,205 Posts
Discussion Starter #9
DansSlk said:
You know that i was not dis-agreeing with you in my last post right easty i just meant that they probably share the same chassis as our cars do.
I know. I was just posting it for info.

To be honest it wouldn't take to much for it make a good aid. the composite roof as a flat piece is pretty useless but if it was stiffened with some small top hat sections and tied into the vertical beams correctly. it would make a huge difference. then they could look at putting lightening holes in the chassis. Like we said previously though the chassis development is done by
mercedes as a whole and I guess all the structural analysis guys are there. Maybe AMG can tweak, mod and tune but when it come to structural integrity maybe there happy leaving it alone?
 
D

·
Guest
Joined
·
0 Posts
OK i see so it would not have been too hard for AMG to use the fixed roof as a roll cage basically so they have either decided to use a separate cage for ease of install or for cost savings as they don't need to really do anything to the car structure wise and i guess it would be real expensive to have Merc design a new chassis just for the limited edition cars and using a separate cage would also mean the roof could be just tacked on to the cross-member and not have to be structural how does that sound to you?

Wouldn't it be good if the roof does not support any load to make it lift out so you could have an open top if you fancied and a roof when you didn't just like us but without the hydraulics

I will have a dig around and see what the MBUK people have to say about the special series cars.

Dan
 

·
Registered
Joined
·
2,205 Posts
Discussion Starter #11
No sorry, I dont wan't to confuse the two. The roof if tied in correctly aids the rigidity of the car and makes it handle better. A roll bar is an extra safety measure. I'm sure it adds stiffness to the car if attached correcly. but roll bars are specifically for safety. That's why pretty much every racing category and race spec requires roll bars installed. Not that I know anything about car design.

Your idea about having a manual remove and store roof is the popular choice for cars like the elise and s2000, where a hardtop is required for some racing. people have a hardtop in the garage and put clip it on for tracks days. Thats my ideal for a Special edition SLK.
 
D

·
Guest
Joined
·
0 Posts
easty said:
No sorry, I dont wan't to confuse the two. The roof if tied in correctly aids the rigidity of the car and makes it handle better. A roll bar is an extra safety measure. I'm sure it adds stiffness to the car if attached correcly. but roll bars are specifically for safety. That's why pretty much every racing category and race spec requires roll bars installed. Not that I know anything about car design.

Your idea about having a manual remove and store roof is the popular choice for cars like the elise and s2000, where a hardtop is required for some racing. people have a hardtop in the garage and put clip it on for tracks days. Thats my ideal for a Special edition SLK.
Thanks for the clarification easty i also don't have the foggiest idea about car design i just work on them. The A-frame in the car already must have a considerable amount of strength just in case the cars ends up bottoms up but i see your point about the extra confidence i suppose is the word i want that having a roll cage would bring the driver.
I don't think that i would be able to live without the vario-roof for long its nice just to be able to pull over (or if you have the fancy roof module thingy not to pull over) and just press a button and have the car do the work but that me being lazy i suppose now if AMG where to push the boat out for a full carbon-fibre car and 400BHP then i might think about it as it would really fly without the weight of the steel not that it doesn't already mind you.
I might start a separate thread on it to see what people think but i am thinking about making the roof of the car carbon-fibre as the current one just unclasps its just the cost of the materials that could put a stop to it i guess
 
D

·
Guest
Joined
·
0 Posts
Agreed its a very interesting topic i will post my carbon roof idea in the R171 page as i don't want to hijack the Special Series thread as its not really that related to it
 

·
Registered
Joined
·
2,205 Posts
Discussion Starter #15
"I might start a separate thread on it to see what people think but i am thinking about making the roof of the car carbon-fibre as the current one just unclasps its just the cost of the materials that could put a stop to it i guess"

Well if you need any help, I do design composite panels. Just for toys a little more expensive. ;)
 
D

·
Guest
Joined
·
0 Posts
Yeah i bet you lucky git!
Thank you very much for your offer easty if i can convince the good lady its a really good idea and i think i can then i might just take you up on it.

Again thanks very much mate its really good of you
 

·
Registered
Joined
·
1,596 Posts
easty said:
One of my pics of the asian cup cars, you can clearly see the front roll cage bar.

How did you get a chance to drive one?:bannana::hail:
 

·
Registered
Joined
·
2,205 Posts
Discussion Starter #18
I was at an MB event in Barcelona. part of a competition with the AMG lounge. the event included time at the circuit de cataluna. Taxi rides in DTM cars and some SLR's and also driving the asian cup cars around an AutoX track. awesome weekend! see my pics link for loads of images.
 
1 - 18 of 18 Posts
Status
Not open for further replies.
Top