Throttle tensioner - Tohatsu 15 or any

Discussion in 'Bubba's Outboards' started by Pogo, Jun 16, 2006.

  1. Pogo

    Pogo New Member

    Messages:
    96
    State:
    North Carolina
    I don't have a lot of experience with outboards, but it appears that a throttle friction tensioner would make life a lot more comfortable.

    My Tohatsu is, thankfully, a very easy, short throw (or twist) throttle, but, even so, an hour or so of holding it gets to be a real chore.

    From my mototcycle racing days, I remember there were an add-on touring products that clamped to the grip housing, extended to the twist throttle and by which throttle tension could be easily set.

    Is there such a product for Outboards? ... I sure can't find one ... or ...has anyone else come up with another approach to this?
     
  2. Pogo

    Pogo New Member

    Messages:
    96
    State:
    North Carolina
    Well ... as so often happens, nothing is easy .. but then I guess if it were, everyone would be doing it ...:smile2:

    There are no longer reasonably priced motorcycle aftermarket throttle cruise tensioners available. Seems they went away and off the market as they weren't a big seller nor a high profit item. I may find one in someone's "20 year box", but that's now an item for future searching (read: during the winter).

    There are also no later model tensioners that can be retro fitted to my engine ( a 2000 Tohatsu 15) ... as I said .. nothing is easy.

    Looking at this closely, however, I see where I can very likely make an assembly that will squeeze the tiller throttle rod between a teflon pad and an adjustable screw. I've drawn up a couple ideas and will work on it as time permits, but ... in the meantime .. I effected a simple "quick fix" that, while not particularly pretty, seems to work for now.

    There is a slot in the tiller top at the end nearest the engine through which I can look directly at the tiller throttle rod. My "band-aid" was to feed a nylon cable tie through the slot, from the top, wrap it around the rod and back out through the slot.

    Tightening it gradually while working the throttle gave "some" tension, but not enough even when as tight as I could pull it by finger (no pliers here). More tension was needed. Rather than pulling the tie tighter, I chose to go for more contact area.

    Eventually, I wound up with three cable ties installed next to each other which covers about a 3/4 inch length of throttle rod .. 4 ties gave too much and two was still not enough.

    As another interim step, later today I am going to cut a small rectangular nylon piece (about 1" X 3") with two 1/4" holes 1/2" apart (inside edge to inside edge and mount it against the under side of the tiller with the second or center cable tie. It will merely provide a brace across the open tiller casting for a cable tie from the opposite side.

    This will give a balanced pull on the throttle rod from opposite directions and prevent distorting the rod from only side loading it one way.

    Testing this rig was done very cautiously. I had tested it on the trailer many, many times, but still ... on the water I had a pair of cutters right by my hand in case I had to remove the tie(s) quickly.

    Fortunately, I found no bad habits and it appears to work well enough to make holding the throttle for extended periods less a chore.

    It's not perfect (what is?), and I know I can make a more efficient adjustable assembly with either a set scew or a control knob, but ... for now ... I'm good to go :smile2:


    Next on my list is a lateral tab for counteracting prop/steering torque. Little engines don't have adjustable tabs like their big brothers, but even small boat/engine combinations experience torque ... My goal is to have the rig run "trimmed out" at my favorite cruising speed. Eventually, I'll get there.