JoeGibs
Novice Class
Posts: 73
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posted November 29, 2011 12:15 AM
i-hacked.com's no top speed mod
http://www.i-hacked.com/content/view/178/88/
i've spent my entire night messing around trying to build this little circuit, and i cant get it to function properly when i get down to the "test" phase. i've built two of them now, the first one i used the same prongs they did in their pictures, only to discover the markings i was looking for were on the packaging, not the actual transistor. for giggles, i tried testing the first one, and it obviously didnt work. i built the second one correctly, step by step, and then went to test it. tried it first on a 9v battery, didnt work. then i went to try it on a 12v bike battery and got the same thing.
i connect the ground wire/ pin E to the negative on the battery, along with the negative probe on my dmm. i connect a 22k ohm resistor to the speedo wire, which is pin C, and put the other end of the 22k ohm resistor to the positive on the battery. i touch the end of the speedo wire with the positive probe from the dmm and i get 12.7v. with everything in place i put the tach wire to the positive on the battery, and it stays at 12.7v instead of dropping to 2v.
blah, i'm rambling. has anyone done this and tested the device to work properly? i'm not going to even think about trying to wire this into my bike if i cant get it to test correctly.
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02 Fightered R1
03 Project ZX12
  
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