BNSF RAILWAY ...im Modellbau - Horn - Nathan Prime

Nathan Prime

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Prime 920

This is a Prime 920, Second Generation, with notes that are similar to a Nathan P-3 on Union Pacific. Courtesy of Ron Chamberlain

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Another example of the Prime 990, but this one sounds more like a Leslie S3K. You be the judge....

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Ron Chamberlain's recording of a Prime 920 still in service on Union Pacific, in need of a rebuild

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Prime PM-920

The PM-920 was Prime Manufacturing's copy of the Leslie S-3L. Externally, the horns can be distinguished by perfectly round contour where the bells meet the base on the Prime horns, compared to a more complex contour on the Leslie horns, and by the absence of the Leslie trademark on the manifold. The horn pictured uses the triangular base that would have been an L-manifold on a Leslie horn; a base similar to the standard Leslie diamond-shaped manifold was also an option.

Factory tuning was: B inverted 7th (B,D#,A)

Prime no longer manufactures locomotive airhorns, but PM-920's can still be heard on BNSF and Union Pacific, intermixed with their S-3L's. The sound is essentially indistinguishable from an S-3L.

Airhorn from Courtesy Dave Decker: Sample1

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Courtesy Dave Decker: Sample2

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Courtesy Dave Decker: Sample3 (sehr kurz)

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Prime 990

Prime 990 The Prime horn was sort of a direct copy of Leslie's products, although much sturdier built (my opinion) They are no longer manufactured, The Union Pacific, and the Burlington Northern used a lot of them. This one sounds the chord of D#, F#, A#.

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A Prime 990 in service on the BNSF

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The PM-990 was Prime Manufacturing's copy of the Leslie S-3K. Externally, there are a few subtle differences between the Prime and Leslie horns, particularly in the shape of the bell and power chamber where they meet the base. The Prime castings are also somewhat heavier than Leslie castings, and the absence of the Leslie trademark on the manifold is a dead giveaway.

Factory tuning is: D# minor (D#,F#,A#)

Prime no longer manufactures locomotive airhorns, but examples of the PM-990 can still be heard on some former Burlington Northern locomotives. The sound is essentially indistinguishable from an S-3K.

Airhorn from Courtesy Dave Decker: Sample1