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Old 09-28-2017, 06:10 PM   #21 (permalink)
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I use the 0.005" plastic tarp material for a number of projects. Usually I bond some wire mesh between two layers of plastic sheet. A lip just above the rear window might help air flow too.

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Old 11-10-2017, 11:11 AM   #22 (permalink)
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Tablet Dedicated to Torque

I've been so happy with Torque, that I decided to keep using it instead of building an MPGuino or similar. In fact, I decided to go out an by an inexpensive 7" tablet to install permanently in the car. The tablet I chose was an Acer Iconia One B1-780, which I picked up for $110 at Walmart.

I'll post some pictures once I've installed it, but in the mean time, here's a screenshot of the layout I've come up with:



I have a darker version that kicks in at night.

I'll be using this primarily to run Torque, but also MapFactor Navigator (a great free off-line GPS app), and RocketPlayer (a music player app). I'm going to install it in place of my car stereo (the radio doesn't work anyway), and put in a small home-made amp to drive the speakers.

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Last edited by stefanv; 11-10-2017 at 11:53 AM..
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Old 11-10-2017, 08:00 PM   #23 (permalink)
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Car ready Android tablets.

https://www.carjoying.com/1-din-andr...avigation.html

Seem to get good reviews.
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Last edited by oldtamiyaphile; 11-10-2017 at 08:25 PM..
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Old 11-24-2017, 03:02 PM   #24 (permalink)
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Still working on the tablet installation. Radio is out, amp is built, but I still need to fabricate something to hold the tablet itself. I hope to finish that this weekend.

In the mean time, I've put my winter tires on the car. Before I did so, my fuel economy on the last couple of tanks has gone down a bit, I think due to lots of windy and/or rainy and/or cold weather. I expected it to get worse with the snow tires (it always has in the past).

However, as I was putting them on, I noticed that they had a max sidewall rating of 45psi, vs. the 35psi on my summer tires. I had the summers inflated to the full 35, and decided to try the snows at 40 for now. So far, for the first tank and a half, my fuel economy has improved by about 3% according to both Torque and calculations done at fill-up, despite the weather getting worse. This looks promising. I'm not sure I'll take them all the way to 45, since the ride is already getting a bit harsh.
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Old 11-27-2017, 10:38 AM   #25 (permalink)
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I sort of finished the tablet install in the car last night ...



Physically, it worked out well. The tablet fits the existing stereo opening almost exactly. I still need to black out the area behind the tablet, and I may make a front fascia for it to blend in better with the rest of the trim.

The tablet is held in place with strong magnets on the front face of the amplifier enclosure (which I designed and built specifically so that the tablet would end up at the proper depth relative to the dash bezel).

However, I ran into a few snags. First of all, there's a lot of noise coming out of the amplifier if the tablet is connected to the car's electrical system at the same time that it's audio output is connected to the amplifier. I've ordered an audio ground loop isolator to fix that problem.

The second problem is that the amplifier itself is picking up a lot of noise, such as the heating fan motor, and perhaps some ignition noise. The amplifier is completely unshielded, and gets its ground only through the stereo wiring harness. I need to enclose it in metal, and ground it more thoroughly.

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