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This thread is privately moderated by Jack Crossfire, who may elect to delete unwanted replies.
Jan 08, 2014, 08:10 PM
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12 mile RC car run

Ran with the RC car being manually controlled. Keeping it on the narrow urban sidewalks was impossible. After leaving the urban jungle of Rain Ramon, it could start staying on the 15 ft wide trail. After several miles, banging out a straight line became automatic. Its tiny wheels made it erratic on the crumbling parts of the trail. 1 handed driving is still difficult, but better. The controller needs to get smaller.

The gopro naturally died after 6 miles. The RC car went 7 miles on 1.5Ah, then suddenly died & had to be carried 6 miles home. That was way beyond expectations. Thought it would go 1 mile. 6 miles on 1.5Ah should be considered the range. It has a brown out shutoff. A brushless motor should get it up to 9 miles. Its nominal pace was 9m30s.

This system is fast enough to be a pace maker for the slow, long run, but needs more NiMH batteries which are super expensive compared to Lipo. Would only invest further development in a high end brushless system. Those things are expensive, even from Hobbyking. They're $75 - $100 just for the frame.

Don't think the changes are substantial enough to sell a manually controlled, modified RC car as a workout coach. The only differences are the 1 handed control, longer range, & attachments for water.

Making it completely autonomous is pie in the sky, but there might be a way to get it to drive the straight sections or avoid obstacles. A camera which automatically tracks the runner would be something. There's absolutely nothing which can make a timelapse video of an athlete during an entire run, but it can't be far off.


Interesting to note how the speed followed the NiMH discharge curve for 7 miles.

Lion after 6 miles. There's no way to see yourself this far from home besides robot.
Last edited by Jack Crossfire; Jan 08, 2014 at 08:32 PM.
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