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FJR Motorcycle Forums
Technical & Mechanical Problems
Carb Sync Pressure
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<blockquote data-quote="Makuna" data-source="post: 963262" data-attributes="member: 9768"><p>I thought I would update this on the state of the project. I have prototype up and running on an Arduino and connected to my bike for final UI tweaking.</p><p></p><p>Why did I respond to Powerman, becuase he speaks alot of truth in those few words.</p><p></p><p>Although the sensors don't need much calibration (just calibrate to current altitude), the problems come due to them being digital sensors. Mecury is very analog, with some mass that dampens the movement to get a flat reading. Digital doesn't have mass, it also only reads for a small time slice every so often (like looking at a single frame of every second of the movie, it doesn't represent the movie).</p><p></p><p>I had to increase my sample rate to 1000 hz and add alot of filtering to see usefull readings. My visualization needs some tweaks and basically I am done.</p><p></p><p>The actually pressure ranges from ~ -40 kPa to ~ -25 kPa every second (those cylinders aren't standing still and the pressure of course is different at each point on the stroke).</p><p></p><p>Videos and photos will be coming soon (or maybe just a link to a Maker/Instructional writeup).</p></blockquote><p></p>
[QUOTE="Makuna, post: 963262, member: 9768"] I thought I would update this on the state of the project. I have prototype up and running on an Arduino and connected to my bike for final UI tweaking. Why did I respond to Powerman, becuase he speaks alot of truth in those few words. Although the sensors don't need much calibration (just calibrate to current altitude), the problems come due to them being digital sensors. Mecury is very analog, with some mass that dampens the movement to get a flat reading. Digital doesn't have mass, it also only reads for a small time slice every so often (like looking at a single frame of every second of the movie, it doesn't represent the movie). I had to increase my sample rate to 1000 hz and add alot of filtering to see usefull readings. My visualization needs some tweaks and basically I am done. The actually pressure ranges from ~ -40 kPa to ~ -25 kPa every second (those cylinders aren't standing still and the pressure of course is different at each point on the stroke). Videos and photos will be coming soon (or maybe just a link to a Maker/Instructional writeup). [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Carb Sync Pressure
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