Topic: OceanWorks Z drives or Schottels (Read 1796 times)

Taranis · « **on:** September 17, 2020, 04:04:58 pm »

Mine finally arrived (actually very quickly from HK but I was on holiday)

Well packaged for shipping and final handling by Parcelforce

These are 100mm Korts with about an 86mm brass prop. In total cost me £345 for the pair. I'm happy.

You might see them in a Tug build of mine over winter.

Buster22 · « **Reply #1 on:** September 18, 2020, 03:17:52 am »

do u have a link where to purchase these

marco · « **Reply #2 on:** September 18, 2020, 06:55:18 am »

bonjour buster22 ,

here is the link ,

https://www.google.fr/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiRs__pgfLrAhXF6eAKHVLsB0EQFjAAegQIAxAB&url=https%3A%2F%2Fwww.oceanworkscale.com%2F&usg=AOvVaw3-PY_Me4jFR_5dObJCX-hx

Taranis · « **Reply #3 on:** September 18, 2020, 09:32:04 pm »

I had planned to fit these in a Svitzer Maltby hull but unfortunately they are too big for that. So they are going in the Orion Stevns Arctic hull that I mothballed last year.

I've not done this before so following my nose.

I started with a piece of 6mm Paxolin board for a base.

I had already established propeller centres to be 155mm so I set about fitting both units the the paxolin

These have to be glued in place. I've used Everbuild sealant adhesive to set them in place before dry fitting the full assemble while it sets.

That's all for today

Taranis · « **Reply #4 on:** September 19, 2020, 04:55:49 pm »

More pictures

tugboyben · « **Reply #5 on:** September 19, 2020, 05:22:53 pm »

Hi Andy

Super job they look

[size=78%] perfect for that size of hull look forward to more of this build [/size]

Jason

Taranis · « **Reply #6 on:** September 19, 2020, 05:29:25 pm »

Hi Jason thanks. I wasn't sure about using this hull as you know it is quite wrong at the bow but given the cost I decided I'm not going to waste it and will adapt it to be anything but a Stevns arctic. This will be my first Heinz build

I'm just doing the bow thruster at present which is very challenging but I've dreamt up a way to compromise and will be posting in the near future in the Stevns Arctic build that isn't

Agree about the size

Taranis · « **Reply #7 on:** September 24, 2020, 06:23:16 pm »

My servos just arrived. I've no experience of coreless nor HV but I suspect they perform better at 6volts plus.
First thing to note is the OceanWorks fixing centres are a bit wide at 50mm, standard servo being 48mm. However this is easily remedied.

I'm now going to need servo travel extenders. Personally I'm not wanting 360 but I do want at least 180.
Any recommendations??

JimG · « **Reply #8 on:** September 24, 2020, 07:49:58 pm »

Quote from: Taranis on September 24, 2020, 06:23:16 pm

My servos just arrived. I've no experience of coreless nor HV but I suspect they perform better at 6volts plus.

To get the full 30Kg torque you will need to run them on 7.4V, basically a 2S LiPo. Will your receiver take this voltage? or is it limited to 6V.
Jim

Taranis · « **Reply #9 on:** September 24, 2020, 07:55:47 pm »

4 to 10 volts check

thanks Jim
https://hobbyking.com/en_us/frsky-x6r-6-16ch-s-bus-accst-telemetry-receiver-w-smart-port.html?gclid=CjwKCAjwh7H7BRBBEiwAPXjadmDFVWZcUdf6T3qAt2gzAc3r-Bfa_an6JiBCEykV-FrkEa2Ga_gXMBoCnn8QAvD_BwE&gclsrc=aw.ds

cos918 · « **Reply #10 on:** September 24, 2020, 10:08:45 pm »

Hi Andy
I have increased the range of many servos from 90 deg to 180 deg . It normaly just add a few resistors. The big factor is does that servo have a mechinal stop. Some servos only have 180 deg of gears on the final drive some have the full 360 put a pin to stop more that 90. Best think is open it up and see if there is a mechinal stop .
John

Taranis · « **Reply #11 on:** September 24, 2020, 10:16:23 pm »

No stops John I can turn them by hand well beyond 180 deg. Radio increases travel but 150% isn't enough. Likely fit MRW11's

Taranis · « **Reply #12 on:** October 25, 2020, 11:24:31 am »

https://youtu.be/yd7DoNfV6SQ

16-21 · « **Reply #13 on:** November 10, 2020, 10:32:14 am »

Just out of curiosity
What is the maximum voltage the motors will take
And is there a rated max rpm for the schottel unit it’s self?

Taranis · « **Reply #14 on:** November 10, 2020, 11:17:53 am »

Max voltage is well within the rpm you would reasonably want
The motor is 800kv which means 800 rpm per volt applied
The gear reduction is 3 to 1 so I would not expect to want more than 9000rpm personally
Using a 12 volt SLV battery I would be setting throttle limits. From the size of the propellers I imagine 2000 rpm will be more than effective enough at the blunt end.

If you need anything more specific please contact OceanWorks

16-21 · « **Reply #15 on:** November 10, 2020, 11:25:04 am »

Andy,

Thanks for the information.
Nothing else specific just thought others might find it insightful too.
When you consider conventional running gear and the costs involved these units are hard to beat.
It would be interesting to know the amps pulled by the motors under load.

Thanks

Taranis · « **Reply #16 on:** November 10, 2020, 11:28:14 am »

Good questions

I will be doing that some time soon. My last attempt failed as my clip on ammeter gave up.
I now have an inline power meter for the next trial

16-21 · « **Reply #17 on:** November 10, 2020, 11:39:41 am »

Look forward to the update.
I imagine that the motors in combination with the 3.1 will create quite a lot of torque.
It would be interesting to see bollard pull results from the Stevns and your Portgarth.

Taranis · « **Reply #18 on:** November 12, 2020, 03:00:09 pm »

Wet test today. No leaks and everything working. Full load test proved max current to be 21 amps and well within the 60amp esc's I chose. I will probably remove the cooling fans from them.
Normal pootling about will be barely a few amps.

https://youtu.be/OL_6sAIFLZg

16-21 · « **Reply #19 on:** November 12, 2020, 05:40:48 pm »

Andy the playback is not working.
Just wondering you mentioned the Props being 86mm
I had a look at oceanworks site and they mention 80mm / 90mm
The 80mm prop variation mentions 5.1 reduction seems a bit high.

Taranis · « **Reply #20 on:** November 12, 2020, 06:20:26 pm »

Sorry but that's you tube not me, try later.

My props are 80mm
https://www.oceanworkscale.com/product/z-peller-azimuth-thruster-z-drive-propulsion-combo-set-100mm-reinforce-nylon/

Photos of my drives show 20 to 60 gears which is 3:1

You best enquire with the seller.

Taranis · « **Reply #21 on:** November 12, 2020, 06:26:20 pm »

He's up and about in Hong Kong and says mine is what you get so ignore the shop details

You tube view count is on 65 already so I guess some are watching repeatedly. Might crash the server yet

roycv · « **Reply #22 on:** November 13, 2020, 08:43:38 am »

Hello taranis I have used the servo extender that microgyros sells and they just fit between the servo and rx. It works well for me.

I used to do an internal job on the servos as per Cos918 but that does commit the servo and a replacement has to be altered as well.
Regards
Roy

Taranis · « **Reply #23 on:** November 13, 2020, 09:27:32 am »

I changed to these Roy

https://youtu.be/TouOVUvQy9M

roycv · « **Reply #24 on:** November 13, 2020, 10:24:31 am »

OOOPs I think I meant Flytron, sorry microgyros.
Roy

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Author Topic: OceanWorks Z drives or Schottels (Read 1796 times)