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Author Topic: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats  (Read 11443 times)

The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #100 on: October 30, 2019, 06:54:30 PM »

Have you tried this program to set mixes on the x9e, Open TX companion?


https://www.open-tx.org/2019/10/05/opentx-2.3.1


I remember using a similar Frysky program a few years back for an earlier transmitter.

Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #101 on: October 30, 2019, 07:47:32 PM »

Not myself Dave
I think Kinmel has


I think we have set our radios up in a completely different way but achieving similar outcome
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ANDY
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Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #102 on: October 30, 2019, 11:50:33 PM »

Hi Andylooks great. Thanks for the heads up on the X9E. I will get one on order asap.
John
Thank you John
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ANDY
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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #103 on: November 07, 2019, 02:37:33 PM »

Hi Andy what  impeller are you using when you done its first outing.
John
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Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #104 on: November 07, 2019, 02:38:43 PM »

As it comes John
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ANDY
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Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #105 on: November 07, 2019, 10:25:54 PM »

I'm still waiting for a good day to sail with the adjustments.
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ANDY
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kinmel

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #106 on: November 07, 2019, 10:39:41 PM »

Not myself Dave
I think Kinmel has


I think we have set our radios up in a completely different way but achieving similar outcome
Andy has every channel on it's own control and combines them on the fly to make things happen. I can never remember which control does what and so crash when I shut the throttle to stop. My grandchildren want to sail it too, so it has to do most of the work itself.

I want my Shannon to be exactly the same as my other models when sailing around the lake, left stick up is forward - left stick down is slow, or stop and right stick left or right is steering.  I want the buckets to move when they need to without any special input from me.  Trims the same.   At the same time I want 3 speed ranges- fast on an empty lake, medium when others don't want the wash ruining their sail and a lower speed for  accurate manoeuvring.My radio is now programmed to achieve all of that and next I will try to put sideways docking on a 3 way switch. Up is Port, centre is zero positioning and down is starboard.
OpenTx is so versatile that there is no correct way, there are many routes to the same outcome.

I am more than happy to discuss the project and accept advice and comment.

Download the files below and you can use OpenTX companion to simulate my radio scheme as it is now. Use empty channels to play around with programming

OpenTx Companion - manual and software.....  https://www.open-tx.org/downloads
Hamilton Jets issue guidance on on controlling the jets.....  https://www.dropbox.com/s/rhvvl506br2ttt2/HJ362%20R1%20A37.pdf?dl=0    ( Click the down arrow next to "Sign In" and select "Direct Download )
Once you have installed Companion you can get this file and double click it.  Companion will open and you can run the simulation.......   https://www.dropbox.com/s/0ej1ow4ehfwph3j/Shannon.otx?dl=0
A print out of the .otx file is here.....  https://www.dropbox.com/s/p45938pxftonbe6/Shannon_otx.pdf?dl=0

you can use up a lot of time and paper solving each section.
If there is enough interest we can ask martin to create a separate thread.




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kinmel

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #107 on: November 08, 2019, 06:35:09 AM »

This model is setup for my firmware and the servos in my Shannon, running it "as is" in your boat may damage the trim tabs, nozzles and buckets.

You can safely run it in OpenTx companion, but there is a process for adapting it to your personal setup. 

Later I will add an explanation in Dropbox on how to do it.


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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #108 on: November 08, 2019, 03:20:37 PM »

Thanks for the links Kinmel.


I might invest in a X9E,


just need another Shannon kit.

Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #109 on: November 08, 2019, 04:00:20 PM »

Two unbuilt MBD have recently changed hands
Chris Hoverd got one and ordered his jets already  :-))


Yes ditto Dave thanks for the links Alan.


HAPPY birthday Dave  :-)
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ANDY
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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #110 on: November 08, 2019, 09:43:23 PM »

I might invest in a X9E,
Not wishing to redirect the thread, just conveying info that at the end of the month I may well be selling a very well looked after X9D. PM me if interested :-))
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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #111 on: November 09, 2019, 02:13:56 PM »

@Kinmel,


Now I've seen your program, I understand how the transmitter works.


Have you had any thoughts about independent manual controls?


Dave

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #112 on: November 09, 2019, 03:41:46 PM »

Independent is relatively straight forward.
Look at the nozzles which are treated identically, but on their own channels 4 & 12.
 Input is 100% of right stick horizontal
mixes is the same.. ( I4 is channel 4 on the input page )
Outputs are the same with limits adjusted to manage servo throw. ( these is the most important settings   - no matter what the logic channels produce as a final figure these limits are absolute  and protect your nozzles being pushed too far ).

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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #113 on: November 09, 2019, 04:03:31 PM »

I was thinking more of, left hand stick for port drive power and direction, right stick for starboard power and direction.  maybe manual control of the buckets.


I have that setup on my I6x, but using an arduino for the mixing.



kinmel

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #114 on: November 09, 2019, 05:06:40 PM »

Identify the stick movement for each channel
I would have:-
Port Motor on Ch 1 is "Thrust"  on stick Left/Vertical.      Input is "Thr Weight(100%)  since there is no mixing,  mixer is Thr Weight ( 100% )  and since the motor has no reverse,  output is  Min = 0.0%  and Max = 100%  *

Port Nozzle on Ch2  is "Ail" on stick Left/Horizontal.   Input is "Ail Weight(100%) since there is no mixing,  mixer is Ail Weight ( 100% ) and output is limited to Min = -45%  and Max = 45% *  100% throw would destroy the nozzle.
Stbd Motor on Ch 3 is "Ele"  on stick Right/Vertical.      Input is Ele Weight(100%) since there is no mixing,  mixer is Ele Weight ( 100% ) and since the motor has no reverse,  output is  Min = 0.0%  and Max = 100%  *
STbd Nozzle on Ch2  is "Rud" on stick Right/Horizontal.   Input is Rud Weight(100%)  since there is no mixing,  mixer is Rud Weight ( 100% )  and output is limited to Min = -45%  and Max = 45% *  100% throw would destroy the nozzle* You also need to set the direction of throw in Outputs.Other channels are set up in the same way.
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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #115 on: November 09, 2019, 05:10:52 PM »

nice, thanks

The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #116 on: November 10, 2019, 04:06:25 PM »

Would these ocean drives be suitable for a 1:16 Shannon, or would the look too much overscale.

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #117 on: November 10, 2019, 04:43:44 PM »

I would say too big Dave
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ANDY
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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #118 on: November 10, 2019, 04:45:29 PM »

Pity, was looking at a 1:16 shannon.

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #119 on: November 10, 2019, 04:47:00 PM »

I don't think Ocean works would downsize for the very small potential sales
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ANDY
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Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #120 on: November 14, 2019, 07:11:43 PM »

This is the revised coupling that I believe will be supplied on future orders.
This picture also illustrates the casting improvements made since my thread start






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ANDY
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The Old Fart

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #121 on: November 15, 2019, 03:26:31 PM »

Brushless motors for Oceanworks units


I've used Aerodrive SK3-3542-1250KV motors in my first Shannon. impressed with them.


specs say 35mm outrunners,  36mm inrunners, upto 1700KV.


Thoughts.



Taranis

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #122 on: November 15, 2019, 03:32:36 PM »

I shouldn’t be online I will get in trouble  :embarrassed:
But
That is meaningless without specifying a battery voltage
OceanWorks know what motors I use and they are as you said SK3
The final rpm should be no more than 20,000rpm MAX It will still be over scale speed well bellow that
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ANDY
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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #123 on: November 15, 2019, 03:40:44 PM »

1250KV on 4s Lipo = 1850RPM so about right.


Looking for an in runner, just for a change.

kinmel

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Re: OceanWorks Jet drives for 1:12 scale Shannon Lifeboats
« Reply #124 on: November 15, 2019, 04:25:11 PM »

4S will be crazy with a Shannon
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