Over sensitive throttle

[MoodySabre]

Prompted by the post a page down.

I have a usual morse type single lever control. It's very sensitive - increasing revs from 1500 to 2000 requires the slightest nudge of the lever. When reversing out of my berth and slipping into forward gear it is very difficult not to over do it and get lots of revs and be charging forward at 4 knots up the aisle. Is this just a question of slacking the throttle cable a bit so that the gearbox bites a bit sooner? I'm reluctant to tinker with something that works but some improvement would be welcome.

 

[oldharry]

The throttle lever at the engine end is too short. It should not open the throttle fully until the morse lever is near or at the end of it's travel and should move the throttle lever proprtionately to the movement of the hand lever. I.e. if the hand lever is moved a quarter of its travel, so should the throttle lever on the engine. There may be a second hole or pin on the engine throttle lever to allow the morse cable to be attached near the outer end. Also the Morse control may have a second attachment point for the cable closer to the hand lever pivot which will reduce the distance the cable moves for any given throttle setting.

 

[MoodySabre]

Thanks for that - I thought something needed adjusting.

 

[oldharry]

A simple way of checking the movement of the cable: disconnect it from the throttle lever on the engine end. Push the morse control towards its 'full throttle' position, then hold the engine throttle lever in its fully open position. The control cable end fitting should line up with the engine throttle 'fully open' position at around 7/8 of the cable movement. What is essential is that the cable control allows the engine to go back fully to the 'idle' position, or you may be unable to change gear, or even damage the gearbox/clutch.