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Engel 212 question

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Re: Engel 212 question

Postby Sub culture » Thu Aug 02, 2012 11:28 am

Few other things to try, if you have them handy. Try a different receiver. Some have low level outputs which can be a problem for some kit, Engel should have done their homework on this, but they may have slipped up. Optically isolate the plug to the receiver. Reflow the solder joints on the underside of the board. Twist all power cables together, and keep any power cables well away from signal cables, including the supply to the hall sensor.

Interesting what Ramesh says about the pressure switch, that suggests it's picking up an induced feed.
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Re: Engel 212 question

Postby Bigdave » Thu Aug 02, 2012 9:52 pm

I tried every receiver I own.
My Multiplex IPD worked the best. BD.
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Re: Engel 212 question

Postby Sub culture » Fri Aug 03, 2012 11:18 am

In that case it sounds to me like a fault on the board, unusual but not impossible. Have you contacted Engel about this, I'm sure the board will still be under warranty.
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Re: Engel 212 question

Postby Fotolabman » Sun Sep 02, 2012 11:22 pm

I have another question

what is the purpose of the breather tube in the main bulkhead
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The tube to the left of the tank intake tube
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The brass tube on the top left of this picture

if i don't plug this hole this will flood the sub
i reread the manual for the steps
and i don't see anything mentioning what to do about it
other than pointing out its a breather tube
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Re: Engel 212 question

Postby Sub culture » Mon Sep 03, 2012 4:43 am

The tube should be capped off with a small length of silicone tube and a bung on the other end.

This is there for a good reason, when you close your model up, you will do so either at home or at the pondside. It may be warm, certainly likely to be warmer than the water you put it in. So your boat is buttoned up, and in the water it goes. An hour later you decide to take it out, and you want to open it up for some reason, but you find you cannot- why? Because the cold water has chilled the air inside the boat, and now you have a vacuum inside keeping the two halves firmly pressed together.

Options are to cycle the piston tank which will compress air inside the boat , however you may go too far and end up in a reverse situation where the pressure keeps the bayonet lock tight, or you can take off the bung on the silicone hose, and equalise the pressure inside the boat.
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Re: Engel 212 question

Postby Fotolabman » Mon Sep 03, 2012 5:30 am

Cool thanks
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Re: Engel 212 question

Postby Bigdave » Mon Sep 03, 2012 2:41 pm

The tubing and brass pin are included in the kit for this. :D
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Re: Engel 212 question

Postby Fotolabman » Mon Sep 03, 2012 7:39 pm

yeah when i read the item list i found the pin in the bag
which is good because up until then i wasn't sure what it was for
because it looked like a tiny bullet cartridge
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Re: Engel 212 question

Postby Wayne Frey » Tue Sep 04, 2012 8:40 am

Just checking.
So, the yet-to-be-installed single XP tank for my Xtail has the wrong electronics? What do I need to change out?
I like that tech rack for the 212. I need to choose a lexan tube to stuff mine in. What is the diameter of that tech rack, if I may ask?
I have already put in an inquiry to Engle to see if I can get that rack.
A lexan tube that rack fits in with sized with endcaps would be pretty trick.
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Re: Engel 212 question

Postby Sub culture » Sat Sep 08, 2012 10:37 am

Wayne, have a word with Ramesh (wheelerdealer) about the tech racks he made for his SS Akula and Trafalgar boats. Both used custom WTC's with Engel piston tanks.

http://rcmodelsubmarines.co.uk/#/196-k- ... 4530491251

http://rcmodelsubmarines.co.uk/#/164-hm ... 4531780398

If the idea of cutting out the framework from PVC or polycarbonate sheet fills you with a sense of dread, I'm sure you can find a CNC or waterjet cutting shop who will do the work for a nominal fee provided you can provide preferably CAD drawings or at the very least accurate dimensions of what you require.
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Re: Engel 212 question

Postby Fotolabman » Mon Nov 19, 2012 4:26 am

So pieces have set and the epoxied parts are dry

i thought it was ready for mounting the tech rack to the aft bulkhead

but i am having problems setting up the servos
i have limited the servo throw to %50 on the transmitter
but the two servos don't move the same amount
the smaller yoke physically cant cover the same travel that the larger yoke can
but it doesn't look like those rudders move much

do i limit the servo throw on both the transmitter and the DLx as well?

centering and trying to get this set up is driving me nuts


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Re: Engel 212 question

Postby Bigdave » Mon Nov 19, 2012 9:19 am

You have very limited throw because of the space restrictions in the tail section.
I am not sure I even have 50% on my servos.
But I can tell you you don't need much rudder travel on the X-tail boats.
My 212 will almost turn in its own length underwater at speed.
You need to adjust your servo travel so when the first yoke hits both stop at that point even if the other can move further.
BD.
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Re: Engel 212 question

Postby Fotolabman » Sun Jan 06, 2013 11:10 pm

So I finally got my battery charger and got the rudders set up where i am getting the right amount of throw
so i went to test it in the tub and this happened




well now i have to investigate the source of the leak, it didn't leak when I didn't have the tech rack mounted to the bulkhead, but now it does

oh well, like i tell my coworkers it's providing an authentic submarine owning experience, my EDWP and undocking date keeps shifting to the right
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Re: Engel 212 question

Postby Sub culture » Mon Jan 07, 2013 12:51 pm

Looks like the main o-ring gland.
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Re: Engel 212 question

Postby Fotolabman » Mon Jan 07, 2013 10:22 pm

I have a feeling that there might be a small gap in the epoxy around the bayonet ring
it didn't leak when I dunked it in the tub with out pressurizing the tank, but i guess the compressed air found a way out

I cant wait to run it in the pool at my apartment
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