Posted by Tom Fleming on February 28, 2010 at 05:05:33 from (67.20.229.132):
In Reply to: Crank Starting posted by Bud W on February 27, 2010 at 10:24:45:
Let me see if I can summarize:
1.) For a coil ignition system, you MUST have a battery. If the battery does not have enough charge to turn the starter, it still may have enough to fire the coil. Hand crank start is definately an option (and a good one if out in the field).
2.)Voltage drop from the starter motor running reduces the voltage to the coil, and subsequently, the spark is not as "hot". Crank starting in very cold weather actually allows for a "hotter" spark with a coil ignition system(see previous posts where I have outlined how to crank start, and why it works).
3.) I have been crank starting all my F series and Letter series tractors for over 30 years. I have not broken my arm, and if you follow correct procedure, you won't. If you break your arm or other items, it is because you didn't know what you were doing, or were not paying attention. Period. Get lazy with any crank start attempt, and like anything else, you WILL eventually get injured.
4.) I prefer magnetos over coils. Always have, always will. With a mag, "Dead battery? No problem". The faster you turn a Mag, the better the spark (we can discuss the impulse setup on IHC mags if you wish). Now, on a distributor system, you can get spark scatter at hight RPM's, however, no stock IHC engine comes clost to that level of RPM's, so no issue there (a whole other thread on a different forum could be written about spark "scatter" and high RPM engine ignition applications).
In conclusion, "yes Virginia, you can crank start your coil ignition system tractor". requires that the battery have at least a little charge, i.e. the battery cannot be completely dead. If you have a good working stock ignition system, you won't break your arm if you follow the instructions on previous posts. IF you have a souped up puller-type setup with seriously advanced timing......... why would you even consider cranking......you can afford a new battery!!!! :wink:
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