mechanics behind scissors doors modification?

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
chmercer
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i dont want to do this, i was just wondering what exactly is involved with this? it has always boggled my mind. like the door comes straight out from the chassis like 3 inches, then rotates upward? how is this?


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Dattebayo
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Go buy a Lamborghini and find out. That stuff is stupid i think. Just a waste of money for one reason.

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AZhitman
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I saw the inventor of the kit (or at least the guy who has a patent on the "best" kit on the market at the SEMA show...

They had several cars there with the conversion. Pretty neat, actually. They also did a conversion right there in the show, which was relatively simple.

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D Money
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it actully serves a purpose one the lamborghini but for the kit its just a ricer mod i think it involves a piston thing and a hinge

chmercer
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since when was looking fancy / expensive a purpose? :D

180fan
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it allows you to open your doors when your car is very low. the 240 is low enough, put new springs or coilovers on em and blam! you run the risk of hitting the curb. I've already hit my door on the curb before and my car's not even lowered! Worthy investment if your car is very low I'd say. I think if you go back to the Nov (or was it Oct?) issue of Options, they've got a walkthrough on their project scissor doors on an FD. Might want to have a look at that.

chmercer
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haha cool justification for rice doors. i wouldnt have thought of that.

BB Turbo
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How could you put those doors on this?

book-ends
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.........I would like to get the scissor door mod just so I could park ridiculously close to people and still get out of my car; leaving them to fume and fuss about how they can't get in their own car.

Yeah, scissor door mod on the car with a 13" crack in the windshield and dents/dings all over the body...........awesome.

Supafly
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the doors still have to pop out a good bit to clear the door jambs, and you have to lean back to get out of most cars that have these kits on them because the door can't go far enough forward without contacting your fenders. it's a huge waste of $1500 IMO.

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ride4lame
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it looks cool as hell, but its alot of cash.

and how does it serve a purpose on lamborghini's? someone said it would scrape if it opened out...but that would mean the dooor would scrape driving in a straight line too.

spitz7985
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god, you guys have turned every body mod into "rice". i'm so sick of that word. can't someone just do something to their car that makes it look cool without it being rice. now i'm not a fan of body kits or giant wings on civics, i prefer the clean look. but come on, lamborghini style doors are pretty damn cool. especially the kind that can open scissors-like or like a normal door.

the term rice comes from 'rice burner' which would imply any japanese car, even a stock one. it is what domestic v8 guys called our cars to make fun of them. that is not, however, what it has come to mean.

spitz7985
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and another thing- if i ever decide to build a top speed car, it will have a giant wing (if the car is rwd), because believe it or not, some of them actually have a purpose.

IvoryJ30t
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well, if your building a top speed car, make two of them.

you put a giant wing on yours, and ill leave out the wing, and ill beat you.

[top speed + excessive drag [big wing] =slow]

spitz7985
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you, my friend, obviously know very little about high speed stability.

Supafly
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spitz7985 wrote:you, my friend, obviously know very little about high speed stability.


go look at some salt flats racers and come back later. most have very low wings because they create downforce with less drag than some aluminum monstrosity sticking up over the roof line. what's under the car is much more important on a top speed runner than the wing itself. they tend to use the aerodynamics of the car (ie. changing the body shape and creating air tunnels under the car) to create enough downforce without too much drag instead of dragging a big anchor through the air. plus, the whole point in your post is that it would actually SERVE A PURPOSE, which is why we call it rice on a FWD car that only sees the street and not rice on a JGTC car that sustains high speeds around a track where downforce is important.

IvoryJ30t
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spitz7985 wrote:you, my friend, obviously know very little about high speed stability.


you, my friend, are an idiot.

IvoryJ30t
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just like supafly said, its about minimizing turbulant airflow around, over and under the vehicle. a massive wing only serves to to create enormous drag, while overloading the rear suspension. [at 200+ mph]

you would fare much better with underbody diffusers and a small lip spoiler than a big wing.

book-ends
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Surely if you're building a top speed car you would want scissor door mods because with the doors open at top speed you would get awesome SIDE air...........uh, sideforce...........to keep the car stable.

spitz7985
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IvoryJ30t wrote:you, my friend, are an idiot.


hey! thanks for the personal attack buddy!!!:D :thumbup

perhaps i need to clarify "giant wing"by giant wing, i was talking about an aluminum/aluminum style wing of any sort, giant compared to an OEM wing.

i am well aware of the ways to increase high speed stability.

spitz7985
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Supafly wrote:plus, the whole point in your post is that it would actually SERVE A PURPOSE, which is why we call it rice on a FWD car that only sees the street and not rice on a JGTC car that sustains high speeds around a track where downforce is important.


true, although the 240sx is a rwd that could and would benefit from a wing at high speeds, however when anyone sees one, they immediatly think 'rice'.

IvoryJ30t
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spitz7985 wrote:hey! thanks for the personal attack buddy!!!:D :thumbup


anytime. 100% free of charge!!:D

chmercer
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spitz7985 wrote:true, although the 240sx is a rwd that could and would benefit from a wing at high speeds, however when anyone sees one, they immediatly think 'rice'.


why would the fact that a 240 is rear wheel drive have anything to do with the amount of downforce it needs?

hmm. why would a street driven 240 need the additional downforce that would be added from a home installed, 50 dollar aluminum bookshelf? i dont see many 240s spinning their rear tires on the highway, they seem to have enough load to keep it on the ground. i guess if you like understeering all over the place at high speeds it would be a good idea to put a big ghetto wing on your car. who needs traction on the front wheels anyway? its a rear wheel drive car right? you only need the drive wheels touching the pavment, duh.

oh yea, same thing for front wheel drive cars, they put the power out through the front wheels, so lets engineer thoes cars so that they have no downforce over the rear wheels, because oversteering at high speeds is awesome.

and i bet all thoes DIY spoiler installs spent a lot of time in the wind tunnel, testing different rake angles on the airfoil.

scissors doors became rice when some dude tried to get hinges from home depot to make his own. read up on aerodynamics by the way.

btw - when you put some ghetto wing on your car, and are on the highway, your car rides like there is a fat dude sitting on your trunk.

AznRide
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ok, back to the lambo door conversion...does anyone have info on how to make one? I think i had the info, i just don't know where to get the parts, and 1500 bucks is not the kind of money i want to spend...or anyone would.

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AZhitman
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I'll look through my stuff from the SEMA show... I swear I have some info somewhere.

BTW, it's not a mod you want to do halfassed - Those doors are heavy, and you're jacking with the structural integrity of the car.

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Dattebayo
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jeansguy...you could always climb in through the hatch. I know i've done it when folks park me in like that in the district.still doesn't that door type add alot of weight? Granted, were not really talking speed here, but it looks like it could put down a extra hundred pounds or so.

book-ends
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As far as weight is concerned, I don't think that it's too much more than stock. From what I remember while reading some import mag when they installed the conversion on an acura, it ended up only being the weight of the bracket (machined aluminun) plus the piston.

Crawling out of the sunroof is no good. I was thinking about making the trap door in the trunk so I could just climb back there and roll out through the bottom!!

chmercer
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from what i have read it only adds 15 lbs. a door. i am wondering what exactly is included with this 1500$? that seems like a hell of a lot for a hinge and a hydraulic piston. anyone know?

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Dattebayo
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okay you misunderstand, i have a fastback, and its easy to do that stock. not that i like moving my subs around though...

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Dattebayo
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is it powered by anything else other than the fluid transfer? i mean like an active hydraulic pump? I could see why it would if you have a pump system to support...


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