Paul, and others,
I broke your comments to may a reply easier. First let me say that I first joined this topic simply to confirm ebiggs' conclusion.
paulvallandigham said:
I was never interested in creating a GAP at the bottom of the pan by banking the powder away from the TH; only in clearing the TH so that heat and flame could enter the TH and light multiple numbers of powder granules. Larry Pletcher has adequately explained above why he used an Electric wire to ignite the priming powder, rather than using sparks from the flint. He generated PURE data on ignition time based on precise positioning of the powder. But, because this data does Not Directly correlate to lock time with sparks igniting the powder, and he could or did not position powder in a variety of positions, or combinations, he makes no claim that his data is anything but what it is.
Paul has the right idea here. The lab type techniques I used are to separate and control variables. The wire eliminates spark variables. One cannot test powder placement in the pan unless you consistently place the powder. So, prime is carefully moved around to test that variable. The results are data from as close to lab conditions I as could. They are not the way I shoot a flintlock. However they show or confirm ideas that may affect the way a flintlock works.
I also have no idea how to find machines to test speed of ignition of both priming powder and the main charge using sparks created by the hammer driving a flint into the frizzen. It is possible, with today's equipment and computers, and cameras, to put some kind of Start "button " that begins a timer when the hammer( cock) begins to fall, and stops when the ball leaves the barrel. Then, using time-lapse photography and computer timers, we could measure various components of the ignition process- Time it takes for the flint to strike the frizzen, time it takes to produce the first sparks, time it takes to throw those sparks into the priming powder in the pan, time it takes for the priming powder to ignite( testing different granule sizes again), time it takes to ignite powder in the barrel, and then time it takes for the main charge to create enough gas to push the ball out the muzzle.
Paul, your paragraph pretty much outlines what I spent the last 23 years doing. I began with Gary Brumfield timing a pair of Lynton Mckanzie's locks at Bowling Green in 1987. That led to testing that broke down the phases of a flintlock: sear time, cock travel to frizzen, time on frizzen, end of mech movement, and powder igniting. All this was done before 1990.
From there I timed many locks, priming powders, vent configurations, and ignition systems.
Again, these various components of ignition are measure in fractions of seconds, which, in most cases, simply cannot be seen nor heard by the human eyes and ears. So, even if you do get good data, what use can it be to the average shooter? I suppose the information might lead to the design of better and faster flintlocks, but other than target shooters, who would benefit enough to notice??? The newer lock design would be criticized( accurately ) as NON-TRADITIONAL, and flintlock target shooters would either refuse to use such a lock, or insist that guns using that lock be "branded", and placed in a different competitive category. The Arguments would not be all that different than those made against the Zip-guns we don't talk about on this forum!
My reason for doing this has never been to develop a new, improved non traditional flintlock. My goal has been to study and understand as much as possible how and why good flintlocks work as they do. An example of this is a study I did with Jim Chamber's help. Using a typical Large Siler, Jim supplied me with two different cocks and three different tumblers. By using all combinations, we could develop data on 6 slightly different Silers. There were differences in all 6, with one particular combination being a favorite of mine. I bought a lock from Jim with that combination.
I don't know what effect this work had on Siler production, but I felt the work was worthwhile. This is what lock testing is for.
High speed photography can help in the same way. We saw things that we never expected to see. Two things come to mind here:
Frizzens rebound on even the best made locks.
Sparks don't accelerate off the flint/frizzen contact - they gently roll down in front of the flint edge. This happened in lock after lock. We just couldn't see it before.
So to finally end: does this make a difference to the shooter. I think so. I haven't met the flint shooter who says, "No, I just want to keep my lock slow." If we asked hunters if hang fires were acceptable, I know what the answer would be. As far as priming in the field, I prime like Mike Brooks who said to pour in powder slam the firzzen shut and fire. Except -- I make sure prime is against the barrel. :wink:
Regards,
Pletch