problems with hirsbrunner rotors


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Posted by Bill on January 12, 2000 at 16:08:06:

I'm told that older rotary-valve hirsbrunners have some trouble in hot weather due to the construction of the valves. Does anybody have any insight as to the scope of this problem, if it's been corrected on newer horns, and, if it has, when the correction was made.

Thanks!
-Bill


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