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03-25-2008, 12:23 PM
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#1 |
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"Able was I ere I saw Elba..."
Join Date: 12-14-2006
Bike(s): VFR800 - CBR929 - VFR800
Posts: 1,729
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Datalogger with 10Hz GPS
I know that some of you guys have, or are looking at dataloggers with GPS. I had a chance to take a look at the DL1 last weekend at Putnam, and have to say that I walked away very impressed.
When I first looked at the traces on the laptop, I thought perhaps I was looking at a basemap of the track with a data overlay....but then was surprised to learn that they looked so good due to the GPS being 10Hz...  The basic unit is ready to go right out of the box, integrated GPS and 2-axis accelerometers. From there you can add 8 analog inputs of your choice, wheel speed sensors etc. Full details here: Fast Tech - DL1 Details The coolest thing though is the software. The ability to overlay the data in just about any configuration you desire is absolutely amazing. I got to see a first hand example of 3 different drivers overlaid to find minute differences in technique (gear selection & braking) that resulted in speed improvements the very next session. Modern electrickery at it's finest...definitely worth a look if you are considering a datalogger...  Edit: Not sure what you do with the lateral accelerometer data on a bike, but I think it can be set to act as a lean angle "reference"....ymmv, best to speak with the folks at Fast Tech about that.
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"Ten times more charming than that Arnold on Green Acres..." Last edited by Baketech; 03-25-2008 at 12:28 PM. |
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03-25-2008, 12:31 PM
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#2 |
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SRA President
Join Date: 12-18-2006
Location: Huntsville, AL
Age: 46
Bike(s): CBR1000RR, RC51, VT500FT
Posts: 6,400
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Very cool Baketech. 10Hz GPS is REAL rare I wonder what chipset is used... Interesting concept almost sheeplike....
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A man who carries a cat by the tail learns something he can learn in no other way |
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03-25-2008, 12:45 PM
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#3 |
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"Able was I ere I saw Elba..."
Join Date: 12-14-2006
Bike(s): VFR800 - CBR929 - VFR800
Posts: 1,729
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The 10Hz factor makes this thing very appealing...especially considering the low cost.
If for some reason you needed 20hz, they have a high end unit with that capability as well... 
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"Ten times more charming than that Arnold on Green Acres..." |
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03-25-2008, 12:56 PM
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#4 |
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SRA President
Join Date: 12-18-2006
Location: Huntsville, AL
Age: 46
Bike(s): CBR1000RR, RC51, VT500FT
Posts: 6,400
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If all you wanted is 5Hz Garmin makes an OEM unit that you could log for a decent price (what I am using in my proof of concept build)
My bet is they are also using the accelerometers to interpolate points
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A man who carries a cat by the tail learns something he can learn in no other way |
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03-25-2008, 02:15 PM
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#5 |
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"Able was I ere I saw Elba..."
Join Date: 12-14-2006
Bike(s): VFR800 - CBR929 - VFR800
Posts: 1,729
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I *believe* their 1st gen unit used that 5hz setup...and yes, I think they do smoothing with the accelerometers. Think there is some verbage on the webpage that gives more detail.
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"Ten times more charming than that Arnold on Green Acres..." |
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03-25-2008, 03:07 PM
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#6 |
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Whales are fast!
Join Date: 12-13-2006
Location: Concord, NH
Age: 33
Bike(s): The Mighty Nissan!
Posts: 3,031
Images: 58
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How does the frequency range affect how gps works? (just curious)
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 http://www.kezerphotography.com "If thou hast not a sword, sell thy cloak and buy one." -Luke 22:36 |
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03-25-2008, 03:41 PM
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#7 | |
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SRA President
Join Date: 12-18-2006
Location: Huntsville, AL
Age: 46
Bike(s): CBR1000RR, RC51, VT500FT
Posts: 6,400
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Quote:
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A man who carries a cat by the tail learns something he can learn in no other way |
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03-25-2008, 03:46 PM
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#8 | |
 
Join Date: 12-13-2006
Location: SF Bay Area, CA
Bike(s): 2008 BMW GS-A
Posts: 6,341
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Quote:
 ) the bike.The lateral accelerometer also can quantitatively show someone the difference between headshake and a tankslapper. I know it is necessary for track mapping on the old set-up I have. EDIT: It's also by far the most fickle sensor I've used. I've had two die.
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Someone needs to present the facts and the physics rather than just the rhetoric. Poor old Carmelo doesn't understand the physics of a motorcycle. - Jerry Burgess, on spec tires and changing engine rules Last edited by luvtolean; 03-25-2008 at 03:53 PM. |
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03-25-2008, 07:40 PM
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#9 |
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"Able was I ere I saw Elba..."
Join Date: 12-14-2006
Bike(s): VFR800 - CBR929 - VFR800
Posts: 1,729
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Do you have a DL1, or something else...
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"Ten times more charming than that Arnold on Green Acres..." |
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03-25-2008, 08:34 PM
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#10 |
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having a laugh...
Join Date: 12-18-2006
Age: 30
Bike(s): pps mod'd ohlins on a cbr
Posts: 1,011
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If you want some additional post-processing done on data sometimes, I can run some thematics for you in Mapinfo if you don't have it yourself...
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Cleaver, a film by christopher moltisanti and carmine lupertazzi |
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03-26-2008, 11:10 AM
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#11 | |
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Join Date: 12-13-2006
Location: SF Bay Area, CA
Bike(s): 2008 BMW GS-A
Posts: 6,341
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Quote:
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Someone needs to present the facts and the physics rather than just the rhetoric. Poor old Carmelo doesn't understand the physics of a motorcycle. - Jerry Burgess, on spec tires and changing engine rules |
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