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Old 02-25-2009, 09:28 PM   #1
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Carport turn around


Good Morning: This is my first post on this site, so please be kind. This spring I plan the construction of an attached carport to my house. For a long time I would like to install a car turntable in my carport to avoid having to back out into traffic. There are plenty of suppliers on line for these items, large motorized platforms worth more than the car I plan to rotate. What I would like is a basic, manual X or H platform, mounting only under the tires and rotation on a central bearing assembly. Yes, I could
simply back in and drive out, this would eliminate the idea of a DIY forum.

I have a long drive way, poor view of street, snow banks all winter and a
public school at the end of the block. Try backing a Dodge Neon out from
between two service vans in a Wal Mart parking lot, you sacrifice at least
two shopping carts, one predestrian and most of your trunk space before
you can see side to side.

Regards, BP

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Old 02-25-2009, 10:34 PM   #2
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Carport turn around


Welcome to DIY Chatroom! Do you have a question? Are you wanting to somehow make this thing yourself?

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Old 02-26-2009, 09:40 AM   #3
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Good Morning Thekctermite,

As a retired engineer, with a complete shop, both wood and metal working, I have both the time and space to fabricate the turn a round at the same time I build the car port.
What I require is a design for the central support bearing {2000 Lbs} that would eliminate
the need for out board caster support and track. The weight of the car would only be on the
turn a round during rotation, when parked it would rest on the garage floor.

Regards B.P.
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Old 02-26-2009, 10:37 AM   #4
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Ahh, cool. As you know, 2000 psf is a pretty good point load, and this isn't a static load. Since the car will be spinning over it and won't be perfectly centered, it is a bit of a dynamic load as well.

Have you come up with some sort of bearing that will sit down in the garage floor, bearing on some sort of footing/foundation element I assume? 2000psf isn't too much for the concrete, and chances are the soil beneath could take it just fine. I think the biggest challenge will be making it large enough to resist the "overturning" forces that will inevitably encountered.
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Old 02-26-2009, 12:07 PM   #5
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Boris would a train car wheel spindle work? They are pretty hefty. Maybe you can get a good deal on a "used" one. Even one near the end of it's useful life for a train ought to last a long time for your application.
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Old 02-26-2009, 04:29 PM   #6
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Carport turn around


Ayuh,... I'm thinking a half a Tractor trailer, Trailer axle would make a Good 1...

Bury 1 end in a concrete mass,+ mount the turntable to the Hub side....
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Old 02-26-2009, 04:34 PM   #7
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Good Afternoon:
It is said a picture is worth a 1000 words { 714 metric ] so find one attached. This is a basic idea of what I would like to do - this has a H frame layout, could be an X - format is the same.
Regards, B.P.
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Old 02-26-2009, 06:44 PM   #8
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hmmm, you know what you want, but do you have the welding skills needed to make something like you show?
there may be other ways to approach this too....

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Old 02-26-2009, 06:52 PM   #9
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i know how I'D go about it. but i always tend to think a little differently than most. any way you do it, you'll certainly have to keep the area clear of any storage stuff. spinning cars tend to knock stuff over, i should think.

heh heh

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Old 02-26-2009, 09:23 PM   #10
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Hello:

Bondo. Thank your for your reply. I have indeed explored the possibilty of using a stub axel and hub from a tractor trailer, these things are rated up to 22,000 LBS and should be easy to pick up used by the way these big rigs are spread over the highway
after a snow storm, in fact, my nephew works as a mechanic for a Kenworth dealer.

Dangermouse. I thank you also. I in fact have a Mig welder in my shop and just
finished fabing up a sheet metal break. When you stated " I know how I would do it" you
pulled the curtain back to expose the wizzard. I am open to any and all idea's - metal or
other construction - and would love to know how you would do it.

Regards, B.P.
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Old 02-26-2009, 10:28 PM   #11
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Quote:
Originally Posted by DangerMouse View Post
i know how I'D go about it.
I just had a flashback to your home-made drywall lift thread.
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Old 02-27-2009, 06:58 AM   #12
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uh-oh... RUN TOTO, RUN!!!
gosh kc, i'm not sure if that's a dig or a compliment....? heh heh
but the lift WORKS, yes? sooooo......
now... if the structure was already built.... things would be much different, and about the only options you would have would be working from the 'ground up'.... (anyone see where i'm going yet?)
however.... since YOU are building the structure, let's consider working to lift the car from ABOVE, rather than below.
since i have no welding equipment, let's toss that idea. (at least in MY head)
since a picture is worth 1000.... here's a rough sketch of how it could happen.
my concern is the uneven weight... you may need to lift it 4 or 5 inches to clear the front end, which would likely tip more than the rear. (the wife suggested you throw some bags of cement or blocks in your trunk, but.....)
a small obstacle to figure out...... i have an old powerhead and track from a used garage door opener, if you're interested.... lol

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Old 02-27-2009, 07:13 AM   #13
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Carport turn around


How about just hire some kid to turn the car around every day?
Probably cheaper in the long run
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Old 02-27-2009, 07:17 AM   #14
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gee dave.... where's the fun in THAT? hahahaha

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Old 02-27-2009, 07:24 AM   #15
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I just KNEW you would say that !!
I was thinking the same thing

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