Nathan P7X Experimental 7 chime horn

The Nathan P7X. An experimental 7 chime train horn first created by Edward Kaspriske and Elwood Belknap. I fell in love with Ed’s P7 at the Horseshoe Curve Horn Honks and it’s always been a dream of mine to be able to recreate that. This was no easy task as parts continue to be harder (and more expensive) to find. I didn’t want to Copy Ed’s. I wanted it to look unique in its own way. I decided to use and L manifold Instead of a Gullwing. This posed its own challenges as the standard oldcast 3 piece manifold chunks or “wings” are not long enough so I had to chop up another low mount P manifold so they would be tall enough to clear the bells. Then came the next challenge, the 2 modified bells. The 3 bell needed to be re tuned as well as the second 5 bell. The great Michael Muha already made a post about this so I won’t go into detail but this project wouldn’t have been possible without him and his incredible work! This horn uses all old cast bells except the 2 modified bells which were Newcast to save on modifying older bells that are already hard to find. Also on a odd note, the zero bell is an oval inlet with a cast zero AND a ghost 0. Very cool!
At the end of the day, I wanted this horn to be as perfect as possible. I wanted to make a horn that Ed would have been proud of, and I hope I was able to do just that. Also, a huge thanks to Mike Mullins for providing some information and insight on this horn as well as selling some parts from his collection to make this project possible!

If you have any questions on what you have seen in this video, feel free to ask and I’ll reply ASAP!

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These videos are NOT made for kids. Train horns are illegal to use and can be very dangerous to your hearing health if proper hearing protection is not used.

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