Quoting Removed, click Modern View to seeWell, it is back there sometime yesterday, at least in Modern View, but here it is again:
" While you have everything hooked up, do everybody a favor, if you would, and put your scope V input on the black wire going to the distributor and snap a picture of the points opening with the condenser installed and without. Might give everybody an idea as to just what it does to protect the points from pitting.....Thanks. " I would do that, but I did all that back in the winter of 2007 & now on this July in Texas day, it is just too darned hot to get out there. In my notes that I made at the time, however, I see that there was little difference in the voltage appearing across the points with caps from 0.01 to 0.4 microfarads. What is clearly visible is the amount of arcing at the points. The least with a "factory" value of 0.2-0.3 & increasing with larger value & increasing a large amount with much smaller values until the greatest with no cap at all. With no cap at all, the HV spark is weak enough to cause missing, but the ring up voltage spike remained more less the same voltage. I believe, because, voltage of 'inductor' will still rise to whatever is necessary to establish an arc at plug. Clearly evident however, is the loss of energy that is being burned up/dissipated in points arcing and this is seen as greatly reduced duration of plug arc time (from 2.5milliseconds to 1 millisecond with no cap). As a side note, one of our 8Ns will not run with no cap.........must be marginal?
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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