Instructables
My daily driver is a small BMW Z3 roadster. I like to do projects and go kayaking and other stuff that requires carrying fairly large (but not heavy) loads. These two facts quite frequently cause me problems.

While my wife drives an SUV, it's always inconvenient and often impossible to shuffle our schedules and needs around so that I can use her car to do what I want to do, especially since she refuses to learn to drive a stick shift.

After a recent bout of struggling with this dilemma (a 1967 Cadillac DiLemma? Always wanted to say that...) I decided to find a way to carry loads on my car.

My design requirements, in order of priority, were:

No damage to anything on the car
No modifications to the car
Secure and stable support of loads such as my kayak, a few 2x4s, etc.
Inexpensive
Easy and quick install/de-install
Preferably fits in the trunk of the car

I looked at inflatable car top carriers, but they seem to me to be unsuitable for loads such as lumber, and also look like they could damage the roof of the car.

I also found a device requiring a trailer hitch ($350) and the device itself ($150) AND it would STILL require placing a significant portion of the loading on the roof itself - again, possibly damaging.

Since nothing commercially available seemed to meet my requirements, I (of course) decided to see what I could come up with. Following is the result of 2-3 days of sketching and beer, followed by an afternoon of building - with no beer. (NEVER drink and saw wood. There are better ways to get to meet your local ER medical staff.)

This design uses the roll hoops as a load-bearing structure and with minor modifications should work on any car with roll hoops or a roll bar - though I suspect few owners of such cars would deign to stoop to such plebeian depths as to use a home built device on their garage queen.  :-)
 
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Slow Fat Guy6 months ago

going to try something like this for my PT Cruiser Conv. and 12 foot Kayak.

Looks great! Would love to see it driving down the road.