I already know it is probably a stupid question, but no one answered it. Why can't you have an electric start dirt bike? They have electric start mowers. I must be missing something. It sure would be nice to hit a button when you are stuck in a mud hole rather than trying to kick it. Been there done that...not fun!
I continue to be amazed at the innovation and creativity that gets released when engineers retire from large corporations. The fact you designed this as your own educational exercise is impressive. Some companies are bringing back "engineering freetime". A concept that most abandoned decades ago when MBAs could not measure its Earned Value each week. Imagine what you could have done if you had your own creative time to develop your own ideas before you retired! My hat is off to you, Ed, never stop creating.
To answer the question about the original advance mechanisim in the Panhead, it was a twist grip on the left hand side of the handlebar which the rider could vary as desired. The epitomy of "tune by ear"... :)
Thanks for the comment. This ICU is not an ECU as it does not close the control loop with engine parameters other than RPM. It is strictly a mapped advance curve based on RPM. I wrote a white paper on it and sent it to Design News but I'm not sure if they made it available. If anyone wants a copy of it or any other documentation, email me and I will send it to you. If you are really considering building one for yourself, I will be happy to help if I can.
One of my main goals in doing this project was to educate myself a little further in the engineering aspects of the combustion engine. It is a stepping stone for me to my next endeavor which is to build an ECU. I plan on starting with a single cylinder 4 cycle engine that has an electric starter and an accessable ignition system that can be readily replaced. I have laid out the data acquisition system with 23 parameters. Next is building a small engine dyno for testing. Once that is through I can start ressearching engines. I plan on trying Microchips MCU's first, but I have a feeling it will require more processing horsepower especially when I move to more cylinders. I will probably step up to Freescale's stuff.
When you can't adjust a variable venturi carb easily, it is almost always a case of the tapered needle being worn and needing replacement. The taper is supposed to be continuous, but it will wear the most near the bottom, causing the mixture to be way too lean if you try to set the idle mixture right. The needles are only a few bucks.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.