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Author Topic: Steering alignment of the pump  (Read 4604 times)

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Offline Rottweilerman

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Steering alignment of the pump
« on: May 09, 2015, 01:57:18 PM »
Tom, you probably have seen everything that could possibly have to do with any pump issues, so this question is for you!
After assembly of all the modules and associated parts, I noticed the alignment of the steering shut is off center to the right looking from the back of the boat.  I know this can be adjusted but wasn't sure if this is intentional because of the rotational torque of the pump to make the boat go straight. ???

Besides that everything is good with all the other parts.  \./8

Thanks, John

Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #1 on: May 12, 2015, 05:54:46 PM »
Can you take a picture of what you are trying to describe. I'm not following exactly what you're getting at.
Tom

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Offline Rottweilerman

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Re: Steering alignment of the pump
« Reply #2 on: May 13, 2015, 12:22:38 AM »
Tom,  It looks like the shut is only off 2 or 3 degrees to the right.     It may not make a difference, but I thought I would ask your opinion.   With the counterclockwise rotation, it's possible I would have to apply a little left throttle  just to go straight.

Thanks,  John

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Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #3 on: May 13, 2015, 01:09:36 AM »
I see what you mean now. If you notice the boat veering to the right frequently, you can adjust the nozzle to straighten it out. The ES-Kape I had worked on wasn't angled like that, it was straight. I found the hull would deviate left and right often as a result of the increased steering response built into it, the boat wants to turn now so going straight took constant input from the joystick. 
Tom

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Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #4 on: May 13, 2015, 01:14:36 AM »
Oh, and some 3/4 heat shrink over the t-bolt in the clamp is still needed to ensure the t doesn't spin sideways and bind the clamp while articulating.
Tom

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Offline Rottweilerman

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Re: Steering alignment of the pump
« Reply #5 on: May 13, 2015, 12:51:25 PM »
Tom, I think I'll just adjust it before I hit the water.    Hopefully I will be in the water by the end of next week.  Just finishing the trailer setup, seat installation, ( will send pictures of installation)  various rail installations for electronics and fishing poles, and transducer rod.   My registration letters should arrive by Friday.  I'm getting excited to try it out. \./8
Shrink tubing looks like a good idea.
Have a good day, John :)

Offline Fishlover

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Re: Steering alignment of the pump
« Reply #6 on: January 18, 2016, 03:43:35 PM »
Hey John,
Mine looks exactly the same, except it points the other way.
Easy to adjust:
Actuate steering several times in both directions to assure servo returns the nozzle to the same point.
Then open the retaining nut that secures the nozzle arm to the disconnect and turn the disconnect in or out as needed to get the nozzle straight.
Actuate the steering again several times to see if it returns at center to your satisfaction, then re-tighten the retaining nut.

Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #7 on: January 18, 2016, 03:48:57 PM »
Be careful though, if you center the nozzle and the servo isn't actually at center then you can end up with too much travel on one direction. If that happens and the nozzle stops before the servo completes it's travel it can break the nozzle. Make sure end points are not binding.
Tom

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Offline Fishlover

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Re: Steering alignment of the pump
« Reply #8 on: January 18, 2016, 05:27:52 PM »
Good Point, Tom.
Mine appears to drive right to each end stop (nozzle hitting pump housing) in either direction, but returns to a sloppy few degrees off center. Have not established how hard it pushes on the housing yet.
While this is not a show stopper from an operational point and I sure don't want to split hairs, there ought to be a little space in there to avoid such hard stops.
So, is the solution (it's not really a problem just yet) to re-program the servo to slightly reduce full travel, or simply shave off a bit from the inner plastic lip on the nozzle where it hits the housing to gain a scosh clearance?
I could imagine a high ambient heat (summer) with the actuator arm getting just a bit longer, this end-to-end thing is not necessarily a good thing.

Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #9 on: January 18, 2016, 06:23:59 PM »
It's just a poor design and there isn't much you can do about it other than get rid of it and start over. I gave up trying to get it to work properly, and with my extensive experience with servos and RC aircraft that should tell you something. I'm a few weeks out from having a prototype setup for direct cable control, you don't know what proper control is until you've had your hands on that.

If all you are doing it staying on the main river, or lake... somewhere you don't need to maneuver easily or quickly with any measure of precision, then stick with how it is and leave it stock. If you want to play hard like I do, then you'll never be happy with the servo mess that's on there now.

I've spent the last couple months in my Es-Kape, and today I threw in the towel and took my 2011 out just so I could go down river and actually have fun. I was in heaven, there is just no comparing how each one behaves. Once I get the Es-Kape set up with the cable controls, I will be able to trust it more and be willing to spend more time in it willingly.
Tom

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Offline Fishlover

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Re: Steering alignment of the pump
« Reply #10 on: January 19, 2016, 01:18:08 PM »
So Tom,
I'm curious.
Did the prior Mokai models come with a steering/throttle lever that combined both functions?
Was the throttle a twisting motion on the lever handle?
How comfortable is this for longer rides/effort to actuate?
I suppose with that kind of set-up one only needs to deal with 2 cables.
Are there any pictures or better, videos on the forum, other than your steering re-location clip, that would show how this works?
Thanks.

Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #11 on: January 19, 2016, 01:30:33 PM »
Yes, that is how the last models functioned. A motorcycle type throttle grip on a stick that moved back and forth for steering. I relocated the assembly to an upright position that came through the deck, like where the joystick is on the Es-kape. It is worlds easier to use, more precise, more comfortable, simply Mo-Better in every way and infinitely reliable over the servo disaster. You can ride all day long, there is a thumb screw to lock the throttle tension where you prefer it. You can articulate the steering without the throttle changing position and vice versa. Makes the boat usable in ways the Es-kape could never dream of.

<a href="http://www.youtube.com/watch?v=3-CwoSc69XI" target="_blank">http://www.youtube.com/watch?v=3-CwoSc69XI</a>

The conversion I am planning for the Es-kape will be the same in function for throttle and steering.

<a href="http://www.youtube.com/watch?v=YTInQNzHV7A" target="_blank">http://www.youtube.com/watch?v=YTInQNzHV7A</a>
Tom

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Offline Fishlover

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Re: Steering alignment of the pump
« Reply #12 on: January 19, 2016, 10:01:32 PM »
Hey Tom,
Thanks for the video's. The "Wood2" clip showed the controls in action very well indeed. \./8 Sort of like when I'm dodging through kelp out here.
This lever location looks like the optimum spot.
Hmmm.... food for thought!

Offline Painlesstom

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Re: Steering alignment of the pump
« Reply #13 on: January 19, 2016, 11:18:09 PM »
Here's another video that shows how maneuverable that setup is, I would not take my Es-kape in it's current state to those areas.. no way. ;)

<a href="http://www.youtube.com/watch?v=8XsKxWy4Eao" target="_blank">http://www.youtube.com/watch?v=8XsKxWy4Eao</a>
Tom

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Offline Fishlover

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Re: Steering alignment of the pump
« Reply #14 on: January 20, 2016, 02:17:42 PM »
Pretty darn cool clip!
Great sound track too. Almost a "religious" experience. Sure beats church.
That's why we're into this hobby! \./8