G-ReX

I decided to make a camera mount for the car using the Latch mounting points on the rear shelf. Since they are used to secure car seats, I figured they would be a solid mounting point for a camera. A couple points: first, I can’t seem to drill straight, so my bolts are in at goofy angles, second, the bolts are way bigger than you need for this thing.


actually, I realized that the really off position bolt didn't get put in all the way when I reassembled if for pictures, so it isn't as bad as it looks. But it is bad.

The parts are from Home Depot except the last two:
36” square aluminum tube – cut to 31” (30” would be OK)
1-½ inch wide aluminum bar – need three 5” sections (3rd section depends on your camera)
Six 1-½” bolts with nuts or wingnuts
One screw mount to fit the bottom of a camera, like the ones on a tripod (or a 1/4-20 bolt, if you don't have a parts tripod)
Thin, rubbery padding like from shelf liner of tool box liner

First, lift up the Latch mount covers behind the rear seats. When they are open, pull almost straight up on them and they pop out. It’s just easier to work with them out of the way.

Unbolt the Latch mounts (12mm) and remove them.

Cut 2 pieces of the 1-½” aluminum bar to 5” in length. I bent them in the middle into an “L” shape using a bench vise and rubber mallet.


Place the “L” shaped bracket, upright part against the front of the Latch recess and mark the drill point for the Latch mount bolt. If you keep it centered, you can use the latch mount on top of the “L” bracket with the little side tab right at the edge to keep the bracket from rotating. You don’t need to reuse the Latch bracket, though.


Cut the square tubing to about 30”. I did mine to 31” and have a fair amount of overhang. This will bolt to the top of the “L” brackets, so match them up and drill for the bolts. I used 2 bolts on each side to minimize any rotation, but that may be overkill, since the base is solid. If it's at the top of the "L" bracket, it should clear the rise at the center of the back shelf.


For the camera mounting plate, I used another 5” section of the aluminum bar. How much length you need depends on the size of the camera and location of the camera’s mounting point. I bent the end of the bar at 90 degrees to wrap around the back of the ¾” square tube. I put 2 bolts horizontally through the square tube and upright of the camera mounting plate. Because the aluminum is slightly curved at its bend, but the tube is truly square, they don’t meet flush. I had to put a washer on the bolt between the tube and the plate to keep the corner of the tube off the rounded corner of the mounting plate.


Once it’s assembled, mark the mounting plate for the screw to hold the camera. There are usually 2 holes on the bottom of the camera, but only one is threaded! They also are not usually centered, so don't assume you know the position before you drill. If the camera mounting plate is under the square bar like mine, make sure the camera will clear the bolts as well. I didn’t the first time. The demo video has the mounting plate on top of the square bar, but I relocated it to an underslung position hoping there is less rear view mirror on the screen. An even higher mount might be better for autocross. I'll see next month.

If the camera is mounted right to the aluminum plate, it will spin. I placed the rubbery padding under the camera then tightened it down and it doesn’t budge.

Lastly a link to a demo video. It's also a good example of why I wanted to do this. I got the car out of shape on the track, but remembered what happened incorrectly, so the video helped me to clarify the event.
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G3tR3DDY2GR3DDY

iTrader: (8)

very nice Pat! i may do this.. ive been trying to think of a clean way.

steering wheel switches are lookin good :P

Ross_Dawg

iTrader: (2)

damn this looks great! All in all how much did it cost you?

G-ReX

<$20. It's all Home Depot parts except the screw for the camera that came off an old flash grip I had and the padding I bought years ago for tool boxes.

kainis2k

This is a great Idea... I'll have to look into this in the future for my car as well. I play on participating at some of the upcoming autoX events in my area and this would be perfect!

Striker-7

iTrader: (3)

Very nicely done! My VIR instructor's RX-8 had a similar mount, I forgot to ask him about it.

How often do you make it to VIR? February was my first HPDE there, what a place to start track days.

G-ReX

Thanks! It's my second time at VIR for DE. I've been out for a couple Grand Am races just to watch. I'm Planning on another DE with MazdaDrivers in June.

ndhoffma

Nice mount... Im putting one together for my 8 right now.

Ive also found, you can use a 1/4-20 bolt to mount the camera (same thread) if you dont have the screw mount

G-ReX

Cool, I'll throw that in the original post. Thanks!

Nopstnz8

iTrader: (6)

Thanks. Did this today and it works great! Best of all, it was cheap and easy!

ndhoffma

Only difficulty Ive had with it is reaching the camera to get the vid started

Nopstnz8

iTrader: (6)

^^ Yeah if only I could wire a switch up front to start and stop recording.

G-ReX

I use the camera's remote. As long as I have it turned on ahead of time, I can use the remote to start & stop recording, and pocket it during the run.

Striker-7

iTrader: (3)

My take on the G-Rex original:

Photo 1 shows the mount plate w/ drawer lining mat and right-side attach point. The mat is held on with double-sided tape at each corner, makes it easy to swap out if it gets damaged in any way. The mat helps damp out vibrations and keeps the camera from moving.

Photo 2, the bolt shows position of the mount point for peeking at the driver's instruments, while the wing nut shows the "centerline" camera mount point. I was in a hurry to make it work for VIR, so I grabbed a bag of 1" long 1/4-24 screws and a couple of wing nuts. Just run the screw into the camera 'til it bottoms (lightly!), then use the wing nut to snug it to the mount.

Photo 3 shows how I messed up the length of the "L" bottom , and just bent the assembled mount back against the car seat latch until the mount bar was leveled horizontally. The entire mount was pop-riveted together for a cleaner look, and to prevent anything working loose.

Last pic shows the fist-sized Toshiba Camileo H30 I use for inside car shooting, mounted in the centerline position. You can see the default image in the viewfinder.

G-ReX

Wow, that is much cleaner looking than mine. I need to get me a rivet gun! The mounting plate you used looks like a great idea. I just got back from VIR and I would get my mount shaking as I got past 100 MPH. I still may try to undermount it to get less mirror in the view.