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Author Topic: HMS Lundon  (Read 13952 times)

derekwarner_decoy

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Re: HMS Lundon
« Reply #75 on: March 28, 2014, 01:11:22 AM »

SPB...........all I can see are RED wires & BROWN wires  :o & lots of cable ties........

I hope you have a good electrical schematic & a multimeter........ :D .....

Am sure one of the more experienced electrons type members will assist with the servo twitching..........my only thought is to run the servo looms away from that RED & BROWN spagetti >>:-( of induced gauss......Derek
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Derek Warner

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SwedishProjectBuilder

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Re: HMS Lundon
« Reply #76 on: March 28, 2014, 01:28:41 AM »

SPB...........all I can see are RED wires & BROWN wires  :o & lots of cable ties........

I hope you have a good electrical schematic & a multimeter........ :D .....

Am sure one of the more experienced electrons type members will assist with the servo twitching..........my only thought is to run the servo looms away from that RED & BROWN spagetti >>:-( of induced gauss......Derek
Hehe, I know, not very tidy.. Red and black they are  ok2
The best way for me to get a working sub with my knowledge, at this very moment. Looking forward in time there may be some androino-solutions (mini computer, like rasberry pi)
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Subculture

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Re: HMS Lundon
« Reply #77 on: March 28, 2014, 03:49:04 PM »

Can be a number of reasons for the twitching servo's.

Are they being powered via a BEC or voltage regulator, or via a separate battery pack?

SwedishProjectBuilder

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Re: HMS Lundon
« Reply #78 on: March 28, 2014, 04:59:39 PM »

Can be a number of reasons for the twitching servo's.Are they being powered via a BEC or voltage regulator, or via a separate battery pack?

Hmm, neither bec or voltage regulator. The servos is just plugged into the receiver which in it self is powered by 6V battery-pack.
I read about it now and from what I could figure out I should use a BEC for the servos.
It's likely that the "twitching" is because of lack of "power", am I correct?
I'm a bit of a newbie in this department and obviously haven't learned enough about it, yet.


Cheers
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Subculture

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Re: HMS Lundon
« Reply #79 on: March 28, 2014, 05:19:30 PM »

Not exactly. No necessity to use BEC, most of us do to avoid having to fit another pack of batteries, but far from essential. Sometimes a BEC can be inadequate for the current drawn, and that can cause issues, so that's why I was asking.

As you are powering them direct from a 6volt battery, current draw shouldn't be an issue. it's possible, although unlikely that you may be overpowering the servos, as a freshly charged 6 volt battery can push well over 6 volts, and beyond that figure, many servos can start to complain.

SwedishProjectBuilder

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Re: HMS Lundon
« Reply #80 on: March 28, 2014, 05:26:18 PM »

[size=78%]As you are powering them direct from a 6volt battery, current draw shouldn't be an issue. it's possible, although unlikely that you may be overpowering the servos, as a freshly charged 6 volt battery can push well over 6 volts, and beyond that figure, many servos can start to complain.[/size]
I doubt that is the issue though, although I will hava it in thought. I suspect that it is the V-tailmixer that is causing the twitching. Because, when I only use the servos directly plugged in to the receiver with a split-cable (4 servos, 2 channels - X-rudder) it works fine, except its the wrong combination. Unfortunately I'm in need of some sort of mixing. Though this maybe can be solved with the built in function in the RC-controller. Will try to have a look at that during the weekend.


Thank you for your time  :-)


Cheers

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Subculture

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Re: HMS Lundon
« Reply #81 on: March 28, 2014, 06:43:54 PM »

Sometimes there can be an issue of the output signal level of the receiver being too low for the mixer, and the latter requiring some kind of buffering to bring up the level.

Mixing in the transmitter works but you run into problems when you want to add things like pitch controllers/levellers etc.

You can also purchase levellers with x-tail mixers built in. Not cheap though.

SwedishProjectBuilder

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Re: HMS Lundon
« Reply #82 on: March 31, 2014, 11:30:54 PM »

You can also purchase levellers with x-tail mixers built in. Not cheap though.
Just now found this one: (Cant remember seeing it before)
http://www.engel-modellbau.eu/catalog/product_info.php?products_id=2645
Well, its not cheap considering I'm so close to finding a solution..

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Re: HMS Lundon
« Reply #83 on: April 01, 2014, 10:29:32 AM »

Agreed not cheap, but that will be a good unit. Wrong link BTW- http://www.engel-modellbau.eu/catalog/product_info.php?cPath=2_87&products_id=2192

U3503

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Re: HMS Lundon
« Reply #84 on: April 01, 2014, 10:44:55 AM »

Do you know Momo Sauerland
 better and cheaper than Engel
They are specialist for sub-electronics. 

SwedishProjectBuilder

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Re: HMS Lundon
« Reply #85 on: April 01, 2014, 11:11:33 AM »

Agreed not cheap, but that will be a good unit. Wrong link BTW- http://www.engel-modellbau.eu/catalog/product_info.php?cPath=2_87&products_id=2192
Okey, I see now. I wondered why it was 4 times cheaper than the last time I checked for a similar device... :((


Do you know Momo Sauerland
 better and cheaper than Engel
They are specialist for sub-electronics. 
I do not, but I will look it up!  O0


Cheers
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SwedishProjectBuilder

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A fresh start
« Reply #86 on: November 11, 2017, 04:00:58 PM »

hello everyone,
Im back in business!
It has not gone a month without me having thoughts on how to finish the project and simotaneously modernize the sub.
When a dear friend of mine finished the construction of his 3D-printer it became obvious how I will create the missing parts.
And while Im at it I will integrate all systems of the sub with the help of an Arduino.
Ive also had thoughts about creating the rc-transmitter as an tow-array thing..
The stern part will be a bit more complex with a watertight hatch enabling easy access to the electronics when turning the electronics on/off.













More to come!


Cheers



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U3503

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Re: HMS Lundon
« Reply #87 on: November 19, 2017, 11:58:07 AM »

SwedishProjectBuilder

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Re: HMS Lundon
« Reply #88 on: November 19, 2017, 01:12:40 PM »

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SwedishProjectBuilder

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Re: HMS Lundon
« Reply #89 on: November 23, 2017, 11:15:20 PM »


Did some modelling today.
The front will be added with one extension epoxi-glued to the front end of the ordinary tube.
This front part will have a lid which is secured with 8 M5 screws + nuts.
And lastely one outerskin hull.


I have a lot left to do with fasteners and how the front end will connect to the top hull..
Below is a preview,








Hopefully I will get some printing done this weekend  O0
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SwedishProjectBuilder

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Re: HMS Lundon
« Reply #90 on: November 26, 2017, 03:57:44 PM »


 O0





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