Electronics/Holley gurus, is this idea possible?
Thread Starter
Joined: Apr 2006
Posts: 3,890
Likes: 1,137
From: Grand Rapids, Michigan
Electronics/Holley gurus, is this idea possible? My Camaro has a clutch position sensor, which outputs a 0-5v signal based on where the clutch pedal is in it's travel. With a Lingenfelter CTAP, I'm able to tune exactly where my 2-step disengages. Basically, I have it set up so the 2-step turns off right as the clutch begins to pull down the motor. It works really well to launch my car at the track, and has the added bonus of allowing no-lift shifts. I love the feature, and I want to figure out a way to add something similar to my Firebird.
I have a Terminator X set up in my Firebird, and I added the CAN I/O box so I can add whatever I need to the system. So far, I'm not even using it. I figure this could be a good winter project. The problem is, the Firebird only has switches at the top and bottom of the pedal travel, so there's no way to tell the Holley where the pedal is. The Camaro's clutch pedal position sensor is small and simple, with a 2-pronged lever that lets it ride over a pin so linear movement can be translated into rotational movement. I figured I could make a bracket and mount a Camaro sensor in a way that my Firebird's master cylinder rod could engage the lever. I'd only need to adjust the sensor towards or away from the rod so it would give the full range from 0-5v from top of the travel to the floor.
I'm not an electronics whiz by any means, and I'm only just starting to learn what I can and can't do with my Terminator X system, so any help here would be great. I'm wondering if the sensor could be used as a stand alone, or if I'd need to buy a CTAP to make things work. It seems like the Holley could be programmed so that the functionality of the CTAP isn't needed, but I'm unsure. Or is there a way to accomplish what I want to do without doing any of the above?
I have a Terminator X set up in my Firebird, and I added the CAN I/O box so I can add whatever I need to the system. So far, I'm not even using it. I figure this could be a good winter project. The problem is, the Firebird only has switches at the top and bottom of the pedal travel, so there's no way to tell the Holley where the pedal is. The Camaro's clutch pedal position sensor is small and simple, with a 2-pronged lever that lets it ride over a pin so linear movement can be translated into rotational movement. I figured I could make a bracket and mount a Camaro sensor in a way that my Firebird's master cylinder rod could engage the lever. I'd only need to adjust the sensor towards or away from the rod so it would give the full range from 0-5v from top of the travel to the floor.
I'm not an electronics whiz by any means, and I'm only just starting to learn what I can and can't do with my Terminator X system, so any help here would be great. I'm wondering if the sensor could be used as a stand alone, or if I'd need to buy a CTAP to make things work. It seems like the Holley could be programmed so that the functionality of the CTAP isn't needed, but I'm unsure. Or is there a way to accomplish what I want to do without doing any of the above?
My Camaro has a clutch position sensor, which outputs a 0-5v signal based on where the clutch pedal is in it's travel. With a Lingenfelter CTAP, I'm able to tune exactly where my 2-step disengages. Basically, I have it set up so the 2-step turns off right as the clutch begins to pull down the motor. It works really well to launch my car at the track, and has the added bonus of allowing no-lift shifts. I love the feature, and I want to figure out a way to add something similar to my Firebird.
I have a Terminator X set up in my Firebird, and I added the CAN I/O box so I can add whatever I need to the system. So far, I'm not even using it. I figure this could be a good winter project. The problem is, the Firebird only has switches at the top and bottom of the pedal travel, so there's no way to tell the Holley where the pedal is. The Camaro's clutch pedal position sensor is small and simple, with a 2-pronged lever that lets it ride over a pin so linear movement can be translated into rotational movement. I figured I could make a bracket and mount a Camaro sensor in a way that my Firebird's master cylinder rod could engage the lever. I'd only need to adjust the sensor towards or away from the rod so it would give the full range from 0-5v from top of the travel to the floor.
I'm not an electronics whiz by any means, and I'm only just starting to learn what I can and can't do with my Terminator X system, so any help here would be great. I'm wondering if the sensor could be used as a stand alone, or if I'd need to buy a CTAP to make things work. It seems like the Holley could be programmed so that the functionality of the CTAP isn't needed, but I'm unsure. Or is there a way to accomplish what I want to do without doing any of the above?
I have a Terminator X set up in my Firebird, and I added the CAN I/O box so I can add whatever I need to the system. So far, I'm not even using it. I figure this could be a good winter project. The problem is, the Firebird only has switches at the top and bottom of the pedal travel, so there's no way to tell the Holley where the pedal is. The Camaro's clutch pedal position sensor is small and simple, with a 2-pronged lever that lets it ride over a pin so linear movement can be translated into rotational movement. I figured I could make a bracket and mount a Camaro sensor in a way that my Firebird's master cylinder rod could engage the lever. I'd only need to adjust the sensor towards or away from the rod so it would give the full range from 0-5v from top of the travel to the floor.
I'm not an electronics whiz by any means, and I'm only just starting to learn what I can and can't do with my Terminator X system, so any help here would be great. I'm wondering if the sensor could be used as a stand alone, or if I'd need to buy a CTAP to make things work. It seems like the Holley could be programmed so that the functionality of the CTAP isn't needed, but I'm unsure. Or is there a way to accomplish what I want to do without doing any of the above?
Thread Starter
Joined: Apr 2006
Posts: 3,890
Likes: 1,137
From: Grand Rapids, Michigan
No, I know setting up launch control is easy enough on Terminator X. The problem is when the 2 step disengages. If it's triggered off the fully engaged switch, it disengages as soon as I begin to lift the pedal, and the engine revs to redline. If it's triggered off of the clutch anticipation switch, it won't disengage until the pedal is fully released and the engine will bog. I'm planning on running radials and I want the ability to tune where in the pedal travel the 2 step disengages. I know I could set up a microswitch to engage wherever I want, but using the Camaro sensor would give me a way to easily change the disengagement point to account for track conditions.
No, I know setting up launch control is easy enough on Terminator X. The problem is when the 2 step disengages. If it's triggered off the fully engaged switch, it disengages as soon as I begin to lift the pedal, and the engine revs to redline. If it's triggered off of the clutch anticipation switch, it won't disengage until the pedal is fully released and the engine will bog. I'm planning on running radials and I want the ability to tune where in the pedal travel the 2 step disengages. I know I could set up a microswitch to engage wherever I want, but using the Camaro sensor would give me a way to easily change the disengagement point to account for track conditions.
Thread Starter
Joined: Apr 2006
Posts: 3,890
Likes: 1,137
From: Grand Rapids, Michigan
Yes, that would be the scenario I'm looking for. I could test and find the sweet spot where my clutch is beginning to grab, view the voltage as an input on my 3.5" screen ( or my laptop ), then use that input voltage value to turn off the 2 step. So, for example, if fully released is 0v and fully depressed is 5v, any voltage from your example of 3.17v all the way to 5v would have the 2 step engaged. Then, when I'm at the track or on the street, I can fine tune where the 2 step disengages to account for poor traction, etc. I could also use an alternate voltage value range to allow no lift shifts, say maybe 1v-5v, by adding in a speed sensor input.
