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Its an extremely useful piece of diagnostic equipment to help technicians solve electronic problems while the transmission is in the vehicle. The Schaffer Shifter Have you ever heard of a Schaffer shifter Probably not, but if you work on automatic transmissions professionally, you have. This can be used to determine if an electronic problem is in the transmission or not. It allows direct control of shift solenoids A, B, and TCC while bypassing the vehicle computer.Īll 4 forward gears and the converter clutch can be controlled independently. Hot rodders and street machiners could use this shifter as an alternative to expensive custom wiring. Note: I did not test the shifter on a pwm TCC type transmission. Installation kits are available for most common transmissions and should be ordered with your GSM.Īn electronic vehicle speed signal is required and mechanical to electric speed signal generators are available for GM and Ford cable driven speedometers.Ĭonfirm clutch is working by noting a drop in engine RPMs. The GSM monitors vehicle speed and brake switch status to ensure the vehicle is slowed to a safe speed and the brake is pressed to prevent inadvertent shift in or out of Park, or into Reverse while moving forward. The GSM control module can be surface or flush-mounted and is small enough to fit consoles, dashes, door panels or even armrests.Īn easy to read display shows the vehicles current gear and each button is recessed to avoid inadvertent touches and brightly backlit for all environments. ![]() Diy quick shifter switch manual#Diy Quick Shifter Switch Manual Shifter Switch.In the end I've spent more time and money on this project than I would have if I just bought a Dynojet QS but I love making things and I think that I could get a reasonably priced QS brought to market that could interest people who want this feature but aren't in need of the top of the line gear. If I end up producing these I'll have them cast since the cost is so much lower and it'll still work just as well as this one does.Īfter that it's just putting everything together and figuring out what works and what doesn't. The 3 pieces that make up 1 assembly were pretty damn expensive but the turnaround was much better than casting prototyping and the tolerances were tighter. ![]() To get the metal prototype made I went to. Initially I tried testing the plastic prototypes on the bike but they weren't strong enough and ended up breaking. I found a guy on who can make CAD drawings and sent him over a couple sketches of what I was looking for.Īfter I got the drawings close enough, I did the initial prototyping on my 3d printer (see some of my other projects here ) This gave me an idea of what worked and what didn't. I have some minor design experience ( ) but no real engineering skills. The hardest, most expensive, and most time consuming part was making the sensor housing. If I end up producing these I'd like to get some custom boards printed since the prototypes are ugly but it works for now. Total parts cost for the electronics is ~$30 depending on the cost of the arduino. Diy quick shifter switch trial#I've learned it all just from reading online and trial and error. Diy quick shifter switch full size#I did all the first prototyping on a full size board and then just moved to the mini a couple days ago to get everything more compact. Diy quick shifter switch code#I've done a couple arduino projects before and the code on this is simple. I think it would be fun to have on the street just for merging on the freeway and whatnot and I think/hope that people would want them for street use if the price was right. Yeah, I didn't want it until I had my R6 out on the track. Once I'm finished prototyping does this look like something you guys would be interested in? I'd love to hear any feedback you have on the project. Right now this is just a push sensor but if this goes well I'll make a pull one as well. I'm working on getting the circuitry cleaned up now and just fine tuning the last couple settings. I finally had a chance to test it out this weekend and it worked great. ![]() All the delays are programmable and I'm hoping to have a "don't quickshift below X rpm" setting added soon. I've wired it inline with an ignition wire coming off the engine cutoff switch. It's an Arduino mini that reads the pressure sensor and then trips a relay when it gets above a certain threshold. It goes right in the shift linkage like the Dynojet and is compatible with their 2 piece shift rods. There's no extra play in the shift linkage since the sensor doesn't have any travel like a standard button. The sensor is a pressure sensitive resistor in a custom aluminum housing I've made. I don't race (for now) and so I figured a DIY quickshifter could do most of what a Dynojet can while saving a bunch of money. Diy quick shifter switch plus#I've been doing track days the last couple years and I've been wanting a quickshifter but couldn't justify $250 for the Dynojet sensor plus another $250 for a PC3 I don't otherwise need. ![]()
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