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Dag Evert's "American Classic"

As mentioned on the forum, heres a picture I took some time back, with natural winter daylight. A 2100, and a 1377, both guns have been recrowned, and had their trigger parts shimmed for play, contact surfaces stoned, and trigger springs somewhat reduced within safe limits. The 2100 has had its barrel shimmed with tape to remove play.
Both guns give great accuracy for the money if they are given good pellets!
The combination of pellets and guns in the picture represents something close to my boyhood dreams:-)


-- Dag Evert

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That was one of the arguments proposed....

June 14 2012 at 8:58 AM
rsterne  (Login rsterne)
from IP address 66.244.241.34


Response to I'm not convinced his air was room temperature

and compressing the small amount of air between the valve seat and the back of the pellet would indeed raise it's temperature.... However, the expansion of the MUCH larger volume of air in the tank which takes place to propel the pellet would surely LOWER the temperature of the total amount of air passing down the bore....

Since the velocity limit is based on the average speed of air molecules at a given temperature, I would think the "limit" would be lower than 1649 fps, not higher.... This experiment remains an anomaly, but one that seriously challenges the idea, IMO....

Perhaps the Siegel (IIRC ?) limit of 5 times the speed of sound is the one that really applies?....

Bob

 
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