[Matador]

Can anybody explain( in simple terms) how to fit the wind deflectot in a 968 cab. It fits behind the front seats in a hole each side of car just behind the the doors. There are 2 arms that come down & fit somewhere & an elastic strap that also clips onto something. I am told it's very easy to do but I'm damned if I can work it out so the hood can be raised & lowered while it is in place.

Matador

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[flash]

VERY difficult to do in place - you do need to fold the screen down to even try - i can send you the install instructions if you don't have them



the biggest problem is the boot cover - running without it is bad, and installing it with the screen in place is all but impossible



but, i think anchorman figured out a way to sort of leave it in place, before he installed the mod kit i made for it so it would work with the "chassis brace"

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[wiseman]

[quote name='Matador' post='44766' date='Dec 18 2007, 05:27 AM']Can anybody explain( in simple terms) how to fit the wind deflectot in a 968 cab. It fits behind the front seats in a hole each side of car just behind the the doors. There are 2 arms that come down & fit somewhere & an elastic strap that also clips onto something. I am told it's very easy to do but I'm damned if I can work it out so the hood can be raised & lowered while it is in place.

Matador[/quote]





I've just boiught a 92 968 Cab and was looking for a wind deflector when I stumbled on this site. Can you share which deflector did you buy, where did you get it? Cost?

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[flash]

the only one i have ever seen is the one from the dealership - sunset has had the best price at about 400 to your door

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[mpiazzola]

$375.44 to northern California from Sunset. I tried to install it freehand, but had to go back to the pictogram to get it right. Another issue other than the cab boot is that I imagine the elastic straps will dent the vinyl on the doors where the straps attach to the metal bars behind them. But taking it on and off is a pain. You'd think Porsche could have engineered a better attachment mechanism . . .

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[flash]

it is pretty lame, but i never had any dents in the vinyl - i used the hook on the elastic to grab the metal hinge arm, so the elastic passed between the seat back and the side panel

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[SILVY968]

flash,



Any pics on mounting with Chassis Brace? What mod kit did you install for anchorman?



Brian

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[flash]

nuts - that reminds me that i need to make a kit for someone



it's a pretty easy thing to make if you have the right tools, but the tools cost as much as the screen, and it can't be done without them



i'll snap some shots soon and post them



i've been trying to figure out how to publish instructions so others can make them - i really don't want to do this one - way too labor intensive for what i could fairly charge

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[1GR8_968]

I bought my wind screen from porscheshop UK for around 400 usd. It is very easy to install as the brackets attach to the bolt that holds the seat belts. You can see pics of it in my gallery. Hope this helps.



Robert

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[wiseman]

[quote name='SILVY968' post='44916' date='Dec 21 2007, 04:16 PM']flash,



Any pics on mounting with Chassis Brace? What mod kit did you install for anchorman?



Brian[/quote]





[quote name='SILVY968' post='44916' date='Dec 21 2007, 04:16 PM']flash,



Any pics on mounting with Chassis Brace? What mod kit did you install for anchorman?



Brian[/quote]





Brian,



What brace do you have in your car??

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[SILVY968]

[quote name='wiseman' post='45345' date='Jan 7 2008, 08:48 AM']Brian,



What brace do you have in your car??[/quote]



I have the first run chassis brace from flash.

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[tloof]

Flash,



So how does the Porsche made windscreen work? Does the vertical screen pivot rearward into a horizontal position manually when you want to put the top up, or is it the horizontal section that pivots forward into a vertical position when you want to stow baggage on top of the cubby compartment shelf?



From looking at some of your older rollbar pictures with the Porsche made windscreen in place, it seems to me that it would be far simpler and way more functional to just weld tabs onto the rear side of the rollbar that would allow a horizontal frame with screen to be able to pivot into either a horizontal or vertical position on those tabs, and then to strap a clear lexan vertical windscreen onto the rollbar itself. This would then allow baggage to be loaded onto the top of the cubby shelf as well as allowing the boot to be placed down on top of the baggage area while the horizontal screen is raised into the vertical position when raising the top(and obviously the process reversed when the top is dropped). It would be better for the horizontal screen to also be made with clear lexan as well so that when pivoted up into the vertical position with the top up it would still allow seeing thru it all when looking into the rear view mirror.



Have you thought about this type of installation?

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[flash]

roll bar? what roll bar? i don't have a roll bar - lol



the vertical flips down to horizontal (sort of) - it rests a bit on top of the boot cover - it's really not designed all that well, and does not fit perfectly in the car - it is even more of a problem when using with the chassis brace, but it does work



welded tabs would interfere with those who use the rear area for seats - tabs are nasty thing for kids to bang their heads on



solid materials present serious wind jam issues - netting is really the only thing that works (i suppose you could use lexan with a bunch of holes in it)



the kit i designed goes in easily, and no hardware required - works fine for me - i'm done



there were a LOT of considerations in designing that danged chassis brace - took me quite a while to work it all out - not looking to go back into that

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[tloof]

I assume the kit you designed that you are referring to is the one to enable a stock Porsche windscreen to fit into a 968 using your chassis brace? I don't see what good is it to have the vertical screen pivot down to the horizontal position anyway when the top still clears it when in the vertical position? Seems to me that it would be far better to have a horizontal screen that could pivot to the vertical position to thus enable loading & carrying oversize baggage on top of the cubby shelf (which would then provide a similar wind block capability as the horizontal screen does).



You know, the idea I put forward to allow the horizontal screen to pivot up to the vertical position on tabs off the back of your rollbar would be the ideal setup for functionality in a 968 that has the cubby/storage unit (or a subwoofer retrofit in its place). As a matter of fact, the tabs could be installed by using a clamp bracket setup similar to the way chain link fences are done so that no welding is required. I might look into this idea and try to do come up with something that works.



By the way, if Lexan is used there really shouldn't be that serious of a wind jam problem due to it's high strength (that is the same stuff we use on our amateur built airplanes for the canopy material, and these little planes see well over 250 mph regularly which produces a VERY significant force against it!). I really prefer to have a clear windscreen that I can easily see thru when driving (the mesh screen doesn't appear to have that great of visability...am I wrong about that?).

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[flash]

talk to brian about the lexan issues - he has a nice broken one to tell the story for you - solid materials are too resistant, because they cannot be adequately reinforced at any reasonable cost - windscreens like you mention work because they are curved, thick, and reinforced with framing



as for the thing flipping up, i'm sure that something could be worked out with a different unit, but i wanted to design the chassis brace to work with existing components, be clean looking and not some cobbled together mish mash of nuts and bolts, and not cause somebody to have to work out something new



the porsche windscreen is very inexpensive, and not worth reinventing the wheel for - it works well, is fairly easy to see through, does not make any wind noise, and does not buckle and break under the wind load - seems to me like stepping way over a dollar to pick up a dime



but by all means, have at it and best of luck - who knows? could be cool - but, i'm happy with what i have now, and am looking to other areas

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[tloof]

Flash,



Brian used the far weaker plexiglass (which breaks very easily when flexed), whereas Lexan is way stronger and capable of alot of flexing without breaking. The canopy on my plane can take a bird strike at over 200 mph without breaking to give you a good idea how strong this stuff is. Also, Brians installation didn't have any footer support at the end of the horizontal member to prevent it from being pushed downward by the force of the flowing air, and that allowed a higher moment force to be applied to the upper vertical part of his fixed windscreen. My idea is to keep both the vertical & horizontal members independant of each other similar to the stock Porsche unit, but let the frame work take all of the load (the roll bar would take the load for the strapped on vertical member, and the smaller diameter steel tubing frame like Porsche uses would take the load on the horizontal member). I prefer that the horizontal screen pivot up vertically since that makes better sense for functionality in my opinion, vs the way the stock Porsche unit works.



I will probably order the stock Porsche unit anyway and then look at modifing the horizontal screen with meshing so that it can pivot on tabs attached to the roll bar, but use clear 3/16" Lexan for the vertical member (strapped to the rollbar the same as Brian did his design before it broke).

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[SILVY968]

tloof,



Yes, the Lexan is stronger. By all means give it a try and let us know the results.

I have purchased a generic Porsche windscreen from a forum member and mounted it on the same seatbelt bolts that flash's chassis brace use. The unit has to sit in front of the brace, but I don't mind. The lower skirt Velcro's to the floor, and all is good.

I attached my plex unit to the brace with Velcro straps, but the horizontal panel cracked the mounting points at freeway speeds. The stress point was not at the 90 degree point where the horizontal wing was attached to the main panel. It was reinforced with a 1/2 x 1/2 solid bar; the fatigue was at the 4 attachment points on the main piece.

By the time I added up the prototype materials, the final materials and my time, I had already spent enough to but the generic unit; plus my unit failed. More money on Lexan did not seem like a wise direction.

Brian

   

   

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[tloof]

Brian,



How come you mounted the stock Porsche windscreen in front of the rollbar vs behind it like Flash did? Also, doesn't that limit the amount your seats can recline rearward? (this is critical for me since I am 6'-3" tall and need to be able to move the seat as far back as possible as well as recline the seat back a bit).



Since I am proposing to keep the horizontal screen independant of the vertical screen, mine won't experience any force from the horizontal member being transferred into the vertical member. By using the stronger Lexan strapped to the rollbar for the vertical member it should have no problem handling the wind force. The horizontal screen will pivot on tabs attached to the rear side of the roll bar such that it can pivot up to the vertical position when the top is raised or if I want to stow some larger baggage on top of the cubby deck (I have a special gear bag that holds all my camping gear that is about the same length as the cubby deck and also sits about level with the soft top when in the down position, so it would block any air flow downward between the seats when loaded in the vehicle...thus the reason why I prefer a horizontal screen that pivots up to the vertical position vs the way the stock Porsche unit works).



How does this design idea sound to you?

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[wiseman]

[quote name='tloof' post='51307' date='Apr 22 2008, 12:23 PM']Brian,



How come you mounted the stock Porsche windscreen in front of the rollbar vs behind it like Flash did? Also, doesn't that limit the amount your seats can recline rearward? (this is critical for me since I am 6'-3" tall and need to be able to move the seat as far back as possible as well as recline the seat back a bit).



Since I am proposing to keep the horizontal screen independant of the vertical screen, mine won't experience any force from the horizontal member being transferred into the vertical member. By using the stronger Lexan strapped to the rollbar for the vertical member it should have no problem handling the wind force. The horizontal screen will pivot on tabs attached to the rear side of the roll bar such that it can pivot up to the vertical position when the top is raised or if I want to stow some larger baggage on top of the cubby deck (I have a special gear bag that holds all my camping gear that is about the same length as the cubby deck and also sits about level with the soft top when in the down position, so it would block any air flow downward between the seats when loaded in the vehicle...thus the reason why I prefer a horizontal screen that pivots up to the vertical position vs the way the stock Porsche unit works).



How does this design idea sound to you?[/quote]







It sure would be helpfull if somebody that owned one of these windscreen units posted a picture with the thing hooked up, down, up, sideways or however the thing mounts in there. I've read so many posts on this unit and maybe its just me, but I can't visualize what you guys are taliking about or how these straps secure, etc. Works with the boot or not the boot.........???? I'd feel better about the $400 spent if I could see it.

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[Anchorman]

I don't have such detailed photos at this time - but, the crucial information is that it works, with or without the boot, and requires no modifications to the car. Plus, there is no alternative. What more do you really need to know? <img src="/forum/images/smilies/968/wink.gif" class="smilie" alt="" />

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