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Remote Control Car Servos Control my Throttle BODY

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  • Remote Control Car Servos Control my Throttle BODY

    First off, this for a boat. but since everyone here is really smart, i just wanted to give it a try.

    The engine is a GM:

    Problem:
    The Shifter which connects to the carburetor is working properly.
    BUT
    Instead of using Wire to open the Throttle body to give gas to the engine,
    is there a device (ANY Device) i could use to make it electrical.

    I want a smooth throttle response and very responsive, its very critical when your docking your boat to have good control of your throttle, you give to much gas it will crash into another boat.

    I was thinking of remote control actuator, the same device REMOTE control Car use to turn the wheel.

    This is Call RC. Servos:



    i was thinking of removing the cable which connect to the Shifter and Replace it with a Servos

    what do you guys think. i will do this before summer. anyone had than something like this before?

    and of-course its not going to be remote control. I'm going to directly connect the wire to the servos just in-case some other remote frequencies.
    1983 24' Regal Ambassador 247XL. Twin V6 OMC 3.8L with OMC Sterndrive
    1988 21' Bayliner Trophy HardTop. I4 3.0L with OMC Sterndrive


  • #2
    Re: Remote Control Car Servos Control my Throttle BODY

    As an R/C guy as well as a boater, the servo itself would work as they are availiable in different strengths ( in. lbs. of torque) the problem I see is you will need a transmitter to get the signal to the servo. Just wiring them into the circuit will not make them work correctly. I do not know all the electrical terms associated with this but the transmitter and a reciever sorts out the signals and tells the servo what it needs to do and the speed it needs to do it at. I understand what you want to do, do not think it will be feasable.
    Airshot

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    • #3
      Re: Remote Control Car Servos Control my Throttle BODY

      OK. That's fine. I could do remote control instead of direct wiring to the servo

      i think i could control both engine with this Servos for less than $100
      1983 24' Regal Ambassador 247XL. Twin V6 OMC 3.8L with OMC Sterndrive
      1988 21' Bayliner Trophy HardTop. I4 3.0L with OMC Sterndrive

      Comment



      • #4
        Re: Remote Control Car Servos Control my Throttle BODY

        Bubba, give me some instruction and picture of your set-up. i will really love to put something like that on my boat.

        how much did it cost you for everything?
        What other item did you need to purchase to make your actuator for you?

        Can i use that Electric linear actuator to shift my Gear from Forward to Reverse?

        What control Panel did you use to Control all this Actuator? GOT PICTURE

        is it responsive?,
        1983 24' Regal Ambassador 247XL. Twin V6 OMC 3.8L with OMC Sterndrive
        1988 21' Bayliner Trophy HardTop. I4 3.0L with OMC Sterndrive

        Comment



        • #5
          Re: Remote Control Car Servos Control my Throttle BODY

          RC servos do not have the strength to stand up to this type of service. They are also not marine rated meaning they are not "ignition protected" or "water proof" nor can they be made that way. They definitely are not strong enough for "shifting" duty. Linear actuators make much more sense. Anytme you enter the "fly-by-wire" arena you also need some sort of fail safe system which amounts to a way for the system to determine if what the servo or actuator is doing is what was commanded. In other words, if you were going wide open and pulled back on the throttle and the throttle did not return, what happens then? The two ends of the system MUST track each other. If you google "remote control" systems or similar you should find some systems that are tried and de-bugged.

          On the RC servo situation, you should not use a transmitter and receiver system to operate those servos. The transmitter range is over a mile and if you are operating a 72 or 75 MHz radio you risk interfering with other RC equipment using the channels available to them on those two frequencies. You will not only have the AMA after you but the FCC as well. You might get away with using a 2.4 GHz spread spectrum radio since the receiver is "coded" only to that transmitter so interference is not a problem. Yes -- there are lots of RC float planes and boats operating on public waters. In fact there are scheduled events for these activities and interference from your boat would result in an angry bunch of RC'ers decending on you.

          Comment



          • #6
            Re: Remote Control Car Servos Control my Throttle BODY

            Sounds to me like you have as shift/throttle control problem, most likely cable adjustmen. If you can't give just small amounts of throttle, then fix that problem, Instead of trying to reinvent the wheel. Why don't you fix something that has worked well for thousands of boat owners, instead of building a dangerous situation looking for a place to happen..
            Don S.

            sigpic

            Please, no PM's (Private Messages) regarding boat/engine problems.
            That is what the forums are for.
            Only forum/moderator issues will be answered in PM's.

            Comment



            • #7
              Re: Remote Control Car Servos Control my Throttle BODY

              Originally posted by Don S View Post
              Sounds to me like you have as shift/throttle control problem, most likely cable adjustmen. If you can't give just small amounts of throttle, then fix that problem, Instead of trying to reinvent the wheel. Why don't you fix something that has worked well for thousands of boat owners, instead of building a dangerous situation looking for a place to happen..
              Ayuh,... I agree completely,....
              Reinventing the wheel as proposed in this thread,...
              Would gives a whole new meaning to having a Short Circuit....

              Cable control is the Best there is, if it's kept in Good Working Order...
              If the cables are Bad, or the controller is broken,...
              Fix or Replace 'em....

              Donno about Volvo, but both Merc., 'n OMC used/ have tried electronic controls,...
              Look how Great that worked out,....
              I wonder if maybe they both dropped such things, because it Don't work so well,..??
              Any Grease is Better,..... Than No Grease at All.......

              Comment



              • #8
                Re: Remote Control Car Servos Control my Throttle BODY

                You aren't starting anything new Bubba, Volvo has Joystick control manuvering. Tried and tested and a bunch of years of use.
                Problem is, it's expensive. They have the digital throttle and shift, same as mercruisrer.
                You might make something that will work for personal use, but unless you have unlimited money, or a bunch of finacial backers, you can't afford to make anything digital for the general public, or even setup a different engine for marine use. it just takes too much money in this lawyer filled world.

                Have a look at what Volvo has been doing.
                http://www.volvopenta.com/volvopenta...stickfilm.aspx
                Don S.

                sigpic

                Please, no PM's (Private Messages) regarding boat/engine problems.
                That is what the forums are for.
                Only forum/moderator issues will be answered in PM's.

                Comment



                • #9
                  Re: Remote Control Car Servos Control my Throttle BODY

                  longstand,
                  I have to agree with Don on this one. I am a fan of electronic controls, but this one has to be approached very carefully. A lot of very bad things can happen if the system fails, so it must have fail safe capabilities built in. If you are very talented, and have lots of money to spend on R+D then have fun with it, but if it were me, I'd get the cable system working properly.

                  Bubba. I had a look at that link. Looks like the L12 is powerful enough to operate the throttle but I'm not sure about the shifter. At an unloaded travel rate of 12mm per second, isn't that too slow a response time for either?

                  I use an RC servo control the chokes on the 4160 Holley carburetors on my boat (the standard electric bi metal chokes were just too crude for my liking). They are direct wired to a controller I built and operate on 5 volts DC. I control them with a potentiometer on the dash. I also have a digital readout in percentage for choke position. Response time moves the choke from full closed to full open as fast as I can twist the pot. The worse thing that will happen if the thing fails is that the choke will stay in a given position. If that happens it's an easy matter to disconnect the servo and manually position the choke but it's been working without a hiccup for a couple of years now.
                  Robert
                  1993 Bayliner 3288 "Hocus Pocus"
                  351 Fords
                  Converted to tuned port programmable EFI

                  Comment



                  • #10
                    Re: Remote Control Car Servos Control my Throttle BODY

                    Electric over hydraulic has been used for many years on both commercial and large pleasure boats/ships.
                    Some do ALL controls with just a push of a button, sail trim, raising lowering, furling sails, anchor windlass, steering and applications like you propose...engine control.

                    Stick with something more robust than hobby parts.

                    FYI I worked on a 130' pleasure sailing ship had a mishap at sea, in bad weather, while under 'computer control', the computer could control all aspects of sailing, it locked up, a mate rebooted the system, ship's system took 30 seconds to release and go to manual...in that time the ship came about, a huge wave crashed broadside into the ship, half rolled it, the prop came out of the water, bent the shaft, caved in part of the deck, blew out some pilot house windows and was nearly lost (lack of full power)

                    While in dry-dock, the owner instructed the yard to remove the computer, he also instructed his other 150' pleasure sailing ship to disable that computer system!

                    "Fly-by-wire" is not fool proof!

                    Comment



                    • #11
                      Re: Remote Control Car Servos Control my Throttle BODY

                      The Shifter works GOOD.

                      How did i test it?

                      I remove all the cables on IT, and Shifted it in every direction. it works fine.

                      I remove the cable 1 by 1 and PULL & Push and it works just find.


                      Ones i install everything back. i had the problem again. its Hard give throttle.

                      I will make a video tommorow or next week. and you will see what I'm talking about
                      1983 24' Regal Ambassador 247XL. Twin V6 OMC 3.8L with OMC Sterndrive
                      1988 21' Bayliner Trophy HardTop. I4 3.0L with OMC Sterndrive

                      Comment



                      • #12
                        Re: Remote Control Car Servos Control my Throttle BODY

                        The cables wear out and corrode, and go bad. If the control is good, put on new cables and adjust them properly and it will work.
                        Please explain exactly what the problem is. Don't just come up with a way to bypass a proper fix.
                        Don S.

                        sigpic

                        Please, no PM's (Private Messages) regarding boat/engine problems.
                        That is what the forums are for.
                        Only forum/moderator issues will be answered in PM's.

                        Comment



                        • #13
                          Re: Remote Control Car Servos Control my Throttle BODY

                          Ok! Don S! I always listen to you. so tommorow or before the end of this week. i will post a picture or/and video of the cables and the shifter too. and you decide if i need to purchase a new one..
                          1983 24' Regal Ambassador 247XL. Twin V6 OMC 3.8L with OMC Sterndrive
                          1988 21' Bayliner Trophy HardTop. I4 3.0L with OMC Sterndrive

                          Comment



                          • #14
                            Re: Remote Control Car Servos Control my Throttle BODY

                            i did this in college, on a circuit system that controlled a remote control ATV, the ONE problem it had was coil interference with the RF, which ended up destroying the ATV, but!!!!! once we hard wired in a IR system all the problems went away, so if its wired, the only thing to worry about is getting the correct size servo and MAKE SURE you get a water resistant one... some are waterproof for boats and submarines... have fun and good luck!!! but for responce, high speed servos work great but its really tough to get them to stay adjusted correctly.. IMO it would be cool, but useless if you already have it hooked up leave it!
                            1988 Arrow Glass 5.2 Carisma
                            Volvo Penta AQ131A / 275
                            Lowrance HDS 5

                            Comment



                            • #15
                              Re: Remote Control Car Servos Control my Throttle BODY

                              There's been a boat show on in Toronto this past week, I saw a demo of Yamaha's digital remote shift and throttle by wire setup available in their larger outboards. There's additional controls on a dash mounted touch screen cpu display by which you can adjust idle in 50 rpm increments for trolling. The display can also be set to show all readings normally associated with standard gauges. Temp, pressure, volts, rpm, etc. All marine sealed and USCG approved.

                              Neat stuff but probably $$$ to buy the individual parts to install on another boat.

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