New Product Feeler - Tip-over sensor controller
Posted: Fri Jun 03, 2011 11:07 pm
Not sure if this is the right spot (it IS about sensors...); mods please move if it belongs otherwise.
One of the differences between carbed and FI bikes is that a carbed bike on its side will usually starve of fuel before the bearings starve of oil; a well-topped FI bike may very well keep running until the engine seizes. Just about every EFI bike comes with a tip-over / 'lean angle' sensor that tells the ECU that gravity has won this match, please switch off. Early models were simple mechanical switches, with the disadvantage that a little tail shimmy in a spirited corner could chop your engine, leading to Bad Things(tm).
Current Yamaha design practice uses a potentiometer with a pendulum for a wiper as a lean-angle / fell-over sensor; if the ECU sees that the pendulum has been sitting at the end of its range for some predetermined time, it shuts down.
The MS and uS controllers don't have this ability to pause and think about it. A spare input could monitor the sensor value and trigger an output to block the FP relay signal, but it would be an 'ON/OFF' situation, like the original switches.
I want to build a unit that would plug directly into the R6 sensor (used on many Yamaha bikes, and readily available on EBay). It would be wired inline between the FP relay and pin 37 on the MS (pin 8 on the uS), and would include a timer that would kill the FP signal for 10 sec after being triggered for 3 sec. This allows a pretty good jump sideways, but will still chop the engine quickly in the event of a crash.
If health and finances (and the wife's 'Honey-do' list) permit, I'd like to go to prototype in a week or so. I'm thinking $60 would be a reasonable price.
Thoughts? Comments? Is this something that would interest the bike guys here?
Is this something that would interest the RALLY CAR guys here??
One of the differences between carbed and FI bikes is that a carbed bike on its side will usually starve of fuel before the bearings starve of oil; a well-topped FI bike may very well keep running until the engine seizes. Just about every EFI bike comes with a tip-over / 'lean angle' sensor that tells the ECU that gravity has won this match, please switch off. Early models were simple mechanical switches, with the disadvantage that a little tail shimmy in a spirited corner could chop your engine, leading to Bad Things(tm).
Current Yamaha design practice uses a potentiometer with a pendulum for a wiper as a lean-angle / fell-over sensor; if the ECU sees that the pendulum has been sitting at the end of its range for some predetermined time, it shuts down.
The MS and uS controllers don't have this ability to pause and think about it. A spare input could monitor the sensor value and trigger an output to block the FP relay signal, but it would be an 'ON/OFF' situation, like the original switches.
I want to build a unit that would plug directly into the R6 sensor (used on many Yamaha bikes, and readily available on EBay). It would be wired inline between the FP relay and pin 37 on the MS (pin 8 on the uS), and would include a timer that would kill the FP signal for 10 sec after being triggered for 3 sec. This allows a pretty good jump sideways, but will still chop the engine quickly in the event of a crash.
If health and finances (and the wife's 'Honey-do' list) permit, I'd like to go to prototype in a week or so. I'm thinking $60 would be a reasonable price.
Thoughts? Comments? Is this something that would interest the bike guys here?
Is this something that would interest the RALLY CAR guys here??