Re: classic SP Horns
Author: SP5103
Date: 04-13-2012 - 20:30

Airchime Ltd. of Canada licenses their airhorn designs to Nathan.

The standard M3 and P3 had the same tuning; as did the M5 and P5. They sounded vary different due to their design differences while sounding the same chord.

The sand cast molds for the later P series horns ended up out of tolerance, resulting in the P3 and especially P5 horns being horribly out of tune. The M horn may have been the "classic SP" horn of the 50s, but I would say that the old casting P3 was was the classic SP horn of the 70s.

Most new locomotive horns now seem to be a variation of the Nathan/Airchime K series; several tunings are available and the chords and sound are very different compared to the M or P. The P horn (out of tune) is still in production, they will build the M if you can afford them (think thousands of $$$ each).

The Leslie Supertyphon and Prime knock-offs seem to be the ones disappearing. Their S3L used to be standard on many EMDs and used by ATSF and UP - now rarely heard. BN used the Canadian tuned S3K. Some of the S3L horns sounded great, and their 5 chimes are excellant. SP did not use Leslie horns, but I know for a fact that many of the M-K GP40M-2 rebuilds (&274-7299 and 7100+) got Leslie/Primes.

Subject Written By Date/Time (PST)
  classic SP Horns Don Levasheff 04-13-2012 - 15:17
  Re: classic SP Horns Tom Moungovan 04-13-2012 - 17:09
  Re: classic SP Horns Graham Buxton 04-13-2012 - 17:19
  Re: classic SP Horns MP 97.7 04-13-2012 - 19:59
  and the Canadian inventor Pdxrailtransit 04-13-2012 - 20:24
  and one good Youtube video leads to another Pdxrailtransit 04-13-2012 - 20:38
  Re: classic SP Horns SP5103 04-13-2012 - 20:30
  Re: classic SP Horns Hutch 7.62 04-13-2012 - 22:25
  Re: classic SP Horns Jim 04-17-2012 - 13:23

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