02-19-2009, 08:29 PM | #11 | |
Advanced Member
Join Date: Aug 2008
Location: Marin County, CA
Posts: 3,783
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Quote:
Linear Algebra, Geodesy, and GPS by Gilbert Strang and Kai Borre. A lot of interesting radio tricks, too. I'm not sure which techniques are in wide current use, but Software-Defined Radio has certainly been one interesting technique. I'm not knocking GPS, which I think is a way-cool technology, and results you get are interesting. Just recognize they're not definitive, and don't forget to qualify them by how you made them -- GPS, wheel rotations, radar, lidar, average of 10 trials in each direction of a 100 m level course timed with an optical tripwire at axle height, whatever. The last is what I'd take as the gold standard. |
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02-21-2009, 06:30 PM | #12 | |
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Join Date: May 2008
Location: North Franklin, CT
Posts: 19
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Quote:
and it has been under cover and has never been out in the rain....... checked the control colum shaft connections, dry as a bone and looked new Dan |
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02-22-2009, 01:01 AM | #13 |
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Join Date: Apr 2007
Location: St. Petersburg, FL
Posts: 189
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Bob, my GPS readings
I agree that GPS readings may measure over or under.
The GPS I used was also a Garmin that I have in my wife's Mercury van with a digital dash. Up to 30 mph the van's digital dash actually shows by tenth's of a MPH. The Garmin and digital dash are right on the money. Segway electrical interferance, maybe? But when riding this particular 170 with groups of other gliders there is nothing that can keep up with it! I'm not a speed freak and since I always glide with my wife or a companion I just match their speed. But when I lean into it, nobody else can keep up. The real question is not what speed, but why is it that one machine seems to run faster than another? Yes, I can make a list of possible factors, but it is what it is. Standard tires at recommended 15 psi, I weigh 235 plus carry a handlebar bag full of locks and junk...probably another 15 lbs. It just goes faster than any of the other riders. I've ridden past a couple of the radar speed warning devices that are placed near most schools here in St. Pete, but I haven't been able to "trigger" the radar. On the other hand, when riding in my wife's villager the radar says the van is going as fast as the digital dash does. |
04-13-2009, 12:29 PM | #14 |
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Join Date: Apr 2008
Location: Akron
Posts: 16
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cold weather problems
I've had a similar (but less severe) problem with my i2. When it's below 30 degrees or so outside it will often go into a safety shutdown. Swapping batteries (front to back) improved matters. It will als max out at about 7 or 8 mph, and sometimes seems to have a hard time figuring out which way is up.
The machine sits in my living room or in my office when I'm not using it, so the i2 isn't particularly cold to start with. When the temp is above about 40 degrees everything is fine. Any thoughts? |
04-13-2009, 01:00 PM | #15 | |
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Join Date: Mar 2003
Location: Washington, DC, USA.
Posts: 4,894
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Contact your dealer
Quote:
The radio board gets cold and does not recieve signals from the infokey. Talk to your dealer about getting it repaired. Inc. is doing it if the machine goes in for other repairs. And some dealers are now able to do it at their shops. I believe that Segway of Ohio was just certified for this work. About 10 dealerships were certified last September at a training class in NH. WWH
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Will W Hopper DCSEG Washington, DC, U.S.A. |
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