Entry and exit angles?

I have a real problem. We are starting construction on a house in March next year. This house has been designed with an underground garage with a 14 degrees slope going into the garage. What is the maximum entry and exit angle on the Cayman ? What about with PASM ? Am I going to be able to get the car into and out of the garage? Don't know why I never thought about this before. Problem is I can't even test it out with a Boxster as our house won't be ready till early 2007. What do I do????????? Should I just risk it or wait till 2007 for the Cayman ?

<p class="MsoNormal" style="MARGIN: 0in 0in 0pt">Any chance of a redesign? That would be the safe thing to do and allow you to purchase that really exotic super car in the future....14 degrees is pretty steep but perhaps one of the dealers that now has a launch car can help you figure it out.[/quote]

No redesigning will be very very costly, as much as $150k. This house will be built in the inner city hence the need for underground garage (lack of land). I am not intending to live there for the long term (3 years or so), hence did not really worry about the ability of my future exotics to get in and out of the garage. Never ever thought if my Boxster S and future Cayman will be an issue. I guess it is because I never saw the Boxster S as anything but a car that can be used everyday. As for getting the dealer to help me, guess I will have to wait till Jan/Feb when the cars arrive in Australia. Edited by - WAY on 11/21/2005 7:23:17 PM

Send an email to woodhouse here on the Cayman forum and ask him. I also have seen some skid plates that fit underneath the front spoiler of Boxsters to protect them form parking damage. That might also help. Automotion.com has them.

Way........ From Porsche 's May 2005 Cayman training document, for 'internal use'----- Approach angle (DIN empty) degrees 11.9----- Departure angle (DIN empty) degrees 18.1----- Ramp breakover angle (DIN empty) degrees 13.3----- Ground clearance (DIN empty, center of axles) mm/ in 121/4.8........ Rob Edited by - rsgl on 11/21/2005 9:37:17 PM

I can't help much with most of the technical questions here but as an architect I'll try to help. I downloaded the profile from Road and Track andadjusted my triangle to 14 degrees andI hate to tell you although the back looks like it will make it the long frontoverhang doesn't look good.....sell the landwith plans, keep the Cayman !!!! http://www.roadandtrack.com/assets/download/0511_porsche_data_panel.pdf

You may be able to angle it in as well if you are careful and have enough room to work with. Difficult issue.

Oh no! This is disastrous! I can't believe it! What now????? I mean, the Boxster wouldn't fit either by the sound of it. This is shattering news. Wonder if a 911 fairs better. I had my eyes set on the Cayman ! I will have to talk to my wife, and maybe we can sell it with the plan or build and rent it out. This really does ruin all my plans. Guess it is easy enough to say forget the car, get something else that will have the clearance. But I really want a Cayman . Maybe I will just build it and see if I could angle the car in as suggested? Ahhhhhhhhhhhhh!

You can keep the Cayman and get a set of drive ramps to lower the angle, or change the build specs...

Now that I read your post again, are you sure it's 14 degrees and not a 14% slope?? Normally a % would be spedified not a degree. ie: approx. 1' vert in 7.1' horiz.= 14%+/-, whereas 14 degree slope is much steeper and goes up 1' in just about 4'. Do you have any transition slopes? ie,a 7 or 8 % slopes at the top and bottom would help a lot as well. Let me know and I'll check again!!!

I am not sure Carbon Cayman . On the plans it says '14 degrees grade to garage in accordance with requirements of AS2890.1:2004'. I am guessing that is an Australian standard and you would know nothing about it. But then on the drawings itself, at the top and bottom section, thereare twolines a metre from the top and bottomparrarel to the garage door and the road and on it says '1:10' on both the top and bottom. Does that signify a transition slope of some sort? My architect is on holidays and he isn't contactible till the New Year! Interestingly there is a pic of a 993 and a truck in my garage on the plans. Must be the short overhang on the 911 that has enabled it to get into the garage. /fckeditor/editor/images/smiley/MWPX/tounge_smile.gif

Hmmm, 1:10 is just 10%. Does it give any elevation numbers at the top and the bottom? If so, and you can measure the horizontal distance then we can try to figure this out so you can have a Merry Xmas!!! Let me know.

Thanks for your help Carbon. Unfortunately there is no elevation numbers as far as I can see. I will have to wait till he comes back. It's not going to change anything for me in the mean time I guess. The Cayman is still on. /fckeditor/editor/images/smiley/MWPX/thumbsup.gif

No problem, good luck!

Hi, I'm an architect and just finished designing a house with a 3 car underground garage. The ramp angle is 20% (not 20 degrees). I suggest the owner to push the house back thus longer driveway thus less slope, but he'd prefer a larger rear yard instead. The civil engineer 'softened' the transition grades at top and bottom of the driveway (which incidently made the mid span grade steeper), to clear a 997tt. But this house also has an at-grade attached garage so the ramp is not a deal breaker. My point is, the mid-span grade is much less important than the transition grades at the top and bottom of the ramp. Give your civil engineer the specs and he may be able to work something out. Good luck. CP