Step 3: Garage Penetration Indicator
To keep those fragile boxes full of Christmas decorations and 6th grade soccer participation trophies safe, why not dangle a tennis ball from your garage ceiling to mark where you should stop?
Here's a way to do it*:
- Hang a string from where you think it will hit the center of your windshield or the spot right in front of the driver.
- Park better than you ever have before.
- Using a stick, laser pointer, friend, or your eyeballs, determine where you should hang your tennis ball.
- Put a screw into your sweet spot, then tie on the string.
- Attach the string to the tennis ball.
*You could also make a dowel/tape/nail contraption to stick the string to the ceiling all in one go. Or just send a lanky friend onto the roof of your car. Or tie a string to a spear gun. There are other options, is all I'm trying to say.
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Just had a brainstrom/squall/fart.
To make the tennis balls disappear when you don't need them, rig them with string to the top of your (automatic) garage door. Lead the string through eyelets directly above where they should hang. When the garage door goes up, the balls come down automatically—then disappear up toward the ceiling when the garage door goes back down.
Might be tough to get the heights exactly right. A knot or other obstruction on the string, just upstream of the ceiling eyelet, would limit travel and get the hood-height just right.
Good idea about the garage door.
When I tie a tennis ball for a vehicle position indicator, I thread the paracord through the tennis ball 3 times so that I have 4 cord "legs" 90 degrees apart and then tie it back to the line going to the ceiling on the top side of the ball. Some people just pull it through once and tie a knot in the cord at the bottom, but it would be too easy for someone to pull the ball off the line using that method, so I over-engineer it a bit.
Here is a way to rig the ball to the garage door opener so that it moves out of the way - http://www.instructables.com/id/Automatic-garage-parking-aid/
We also forced our teenage daughters to back into the garage every time while learning to drive. They HATED doing it, but you know what? My now-18 and 20 yrs old chicks can out parallel park you (and probably me). I had a plumber at the house once and he witnessed then-16 daughter #1 whip it into the garage and said "Man, I wish the guys at my shop could drive like that." Makes a Dad proud.
But that being said I guess it would increase the difficulty of your example to impossible !
http://a4skyhawk.org/content/142131-vsf-3-us-navy-1967-intrepid-cruise-book-305
Bremus is way ahead (actually half an hour) ahead of me.
But the adjustment via a stopper on the string may help in lower-ceiling situations. Ad make it easier to fine-tune the system.