is it possible to damage a JB performance vr board with rpm?
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is it possible to damage a JB performance vr board with rpm?
im fighting 1 gremlin after another. after having issues with synch loss at 11500 rpm with just about every type of resistor combo (in line and parallel). i decided to cut half of the teeth from my 24-1 wheel thus creating a 12-1. i removed all resistors and it revved clean to a nice 12500 pull and then a 12800 pull. now it will barely read cranking rpm. i get a little blip on the screen now and then during cranking but nothing solid like before. it started a couple times, but died soon after. is it possible that i hurt the board with higher rpm?
2000 ZX-12R LSR turbo Worlds Fastest at 266.5MPH on board video here https://www.youtube.com/watch?v=CruXgKKzBUs
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Re: is it possible to damage a JB performance vr board with
The higher the RPM, the higher the voltage generated by the sensor. So in theory, you could hurt the board. But it should be able to handle a lot (over 100V) before that becomes an issue. But that also depends on whether the board is located in a place that allows it to cool if those high voltage conditions last for a while.
What would be affected are the big resistors on the board. What you could do is to measure their resistance (with the sensor not connected) and see if you get about 10k.
Jean
What would be affected are the big resistors on the board. What you could do is to measure their resistance (with the sensor not connected) and see if you get about 10k.
Jean
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Re: is it possible to damage a JB performance vr board with
Check the resistors, but it is probably time to go back to your "wheel" thread. The 24 teeth was never your root problem. Many of us run higher tachin frequencies with 60-tooth wheels on automotive engines. The tooth shape has to be well-matched to the sensor, and I have found that filled teeth work better than missing teeth with VR. Was that wheel originally a "missing-tooth" type, or did you grind a tooth off to create it?
Re: is it possible to damage a JB performance vr board with
the 24-1 was an oem wheel, not modified. that is until i turned it into a 12-1 wheel yesterday
Last edited by Blue 12 on Sat Jun 24, 2017 11:03 am, edited 1 time in total.
2000 ZX-12R LSR turbo Worlds Fastest at 266.5MPH on board video here https://www.youtube.com/watch?v=CruXgKKzBUs
Re: is it possible to damage a JB performance vr board with
my board is mounted in a way that only 1 side is accessible, can i test it from the "bottom"racingmini_mtl wrote:The higher the RPM, the higher the voltage generated by the sensor. So in theory, you could hurt the board. But it should be able to handle a lot (over 100V) before that becomes an issue. But that also depends on whether the board is located in a place that allows it to cool if those high voltage conditions last for a while.
What would be affected are the big resistors on the board. What you could do is to measure their resistance (with the sensor not connected) and see if you get about 10k.
Jean
this is an old pic, yes all the wires are on now, i dont have a current pic
2000 ZX-12R LSR turbo Worlds Fastest at 266.5MPH on board video here https://www.youtube.com/watch?v=CruXgKKzBUs
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Re: is it possible to damage a JB performance vr board with
The resistors are surface mount components so you only have access to them on the other side.
Jean
Jean
Re: is it possible to damage a JB performance vr board with
thank you
i think my bike just hates vr sensors. i connected some zx10r wheel speed sensors a couple weeks ago to an external jb board and couldnt get anything from them either. i decided to get that working after the bike was tuned, but now its not looking good for making the july race with anything megasquirt related.
i think my bike just hates vr sensors. i connected some zx10r wheel speed sensors a couple weeks ago to an external jb board and couldnt get anything from them either. i decided to get that working after the bike was tuned, but now its not looking good for making the july race with anything megasquirt related.
2000 ZX-12R LSR turbo Worlds Fastest at 266.5MPH on board video here https://www.youtube.com/watch?v=CruXgKKzBUs