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Air throttle installation to replace King Controls (https://www.foreforums.com/index.php?topic=44666.msg452693#msg452693)

Dub,any luck on the throttle sensor?

Dub, there are several options.  Note, however that all of them require you to also purchase and install a throttle position sensor for the transmission to shift correctly. This device is integrated into the King control, very unusual setup. This device is in the 4-500 dollar range and usually requires an allison tech to calibrate it after install.  In addition you will need to replace or adapt existing foot pedal.

Probably the most popular  is the air throttle.  Not especially simple to set up as it requires tapping into existing air lines and custom bracketry for the connection of air cylinder to engine at far end.  Ft member JOR documented his install very well on the forum.

There is a hydraulic system that uses mineral oil which looked pretty straightforward last time I checked.  Unfortunately I don't remember the brand, though they occasionally pop up on ebay.

The third, and definitely the least expensive is using a high quality marine throttle/shift cable.  Now, before anyone casts aspersions on this idea, let me assure you I have routed high quality marine cables, long ones, through many bends and they are unbelievably efficient.  You can easily push and pull them with your pinky finger and they last for many years in a saltwater environment.  Plus, routing one in a foretravel will require far fewer bends than the usual marine application. It will require sourcing the end fittings separately and some ingenuity in connecting but seems quite straightforward.  Depending on how much cable travel a foot pedal provides you may or may not have to construct a linkage at engine end to allow full throttle....just haven't looked into it enough to say.

Sorry you're in this predicament.  Let me know if I can help, brainstorming, parts sourcing etc.

Dub, there are several options.  Note, however that all of them require you to also purchase and install a throttle position sensor for the transmission to shift correctly. This device is integrated into the King control, very unusual setup. This device is in the 4-500 dollar range and usually requires an allison tech to calibrate it after install.  In addition you will need to replace or adapt existing foot pedal.

Probably the most popular  is the air throttle.  Not especially simple to set up as it requires tapping into existing air lines and custom bracketry for the connection of air cylinder to engine at far end.  Ft member JOR documented his install very well on the forum.

There is a hydraulic system that uses mineral oil which looked pretty straightforward last time I checked.  Unfortunately I don't remember the brand, though they occasionally pop up on ebay.

The third, and definitely the least expensive is using a high quality marine throttle/shift cable.  Now, before anyone casts aspersions on this idea, let me assure you I have routed high quality marine cables, long ones, through many bends and they are unbelievably efficient.  You can easily push and pull them with your pinky finger and they last for many years in a saltwater environment.  Plus, routing one in a foretravel will require far fewer bends than the usual marine application. It will require sourcing the end fittings separately and some ingenuity in connecting but seems quite straightforward.  Depending on how much cable travel a foot pedal provides you may or may not have to construct a linkage at engine end to allow full throttle....just haven't looked into it enough to say.

Sorry you're in this predicament.  Let me know if I can help, brainstorming, parts sourcing etc..... Quote
Thanks Chuck... John ORiely.... JOR that used to be with us sent me extensive drawings today  via email. I was busy all afternoon  plus it is very hot in my shop where my big monitor is that will help me get a broad view of the drawings so I can study closely, I will do that in the morning when it cools a little...Also another forum member contacted me this morning with some ideas and a couple of vendors names from the auto racing industry that I plan to follow up on..There are some possibilities there that could work and be less expensive at the same time. The parts alone for the air throttle system will likely be between $2,000.00 and  $2500.00. I will likely farm out the labor because I just don't believe I can satisfy myself with my own work even though I have a shop. I do quiet a bit of my own work but this makes my head spin. I will be the one to gather the parts and will likely need help with that so I appreciate your offer. Like Chuck from midland/ Odessa says, a guy who would come up with an alternative and less expensive replacement for throttle replacement could sell it with a little marketing. We know of one customer he would have Monday morning.. Like you said, it is a long way from the helm to the engine room on a 40ft boat so there are applications there that could be used in a bus if a guy just sat down, figured it out and built it. Again unfortunately that is above my pay grade.