Little project that worked well. Simple setup consisting of an iPod Touch, a Dual XGPS150A and the CMS LapTimer Pro app. Built my own bracket to hold the iPod and GPS -- it bolts between my rear view mirror and windwhield header. It worked great. Some pics:

The end of the 1/8"x3" aluminum strap is drilled to match the mirror's mount.


A couple of pictures of the finished aluminum strap. An iPod case will be riveted to one surface and the GPS will be tie-wrapped to the flat at the end.




Installed. To finish, the strap is bent towards the windshield and then a furniture "Elevator Bolt" with a foam pad is placed against the windshield to triangulate. Adjust the nuts so that the assembly is spring-loaded against the windshield and the iPod is level and square for good G-readings. Simple and sturdy.


How it looks from the driver's seat:


Here's some video/data from last weekend:

 

What engine mounts do you have? This is surprisingly vibration free.

 

I have Mazdaspeed mounts.

My first try was without the padded elevator bolt pressing against the windshield. It vibrated like a tuning fork at certain RPMs. When I added the elevator bolt mod it was perfect. Seriously stable.

 

Tried TrackAddict yesterday. These are the results:



Things I like about TrackAddict are:

1. The price -- $8.

2. Video options. Lots of options for the overlays. Also, lets you record in 720p to save memory without sacrificing video quality in any significant way.

3. No bugs.

I really miss CMS's friction circle though. That was really nice. But CMS has a lot of bugs with iOS7 and you can only record in 1080p.

Might try Harry's next.

 

I would have however painted the bracket black to prevent glare on sunny days. Aluminum can be quite shinny.

 

I had thought about that. It would look better painted. Haven't had any glare issues though. Bracket and any reflections on the windshield are pretty well hidden by the rear view mirror.