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third version of my Trumpeter Kilo WTC

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third version of my Trumpeter Kilo WTC

Postby raalst » Wed Nov 05, 2008 9:41 am

I'm building a new WTC for my Kilo. In the process I also replaced the hull, so it is a
whole new Kilo.

Things improved (hopefully)
- turning radius. I made the whole rudder assemby into a rudder, not just the original
rudder.
- Less diveplane surface. It now only moves it's flaps. The previous had the whole
dive plane movable.
- faster ballasting. while nifty, the previous servo tank took too much time to flood.
This one uses a much quicker special-purpose servo.
- better waterline. The previous ballast tank was too small. the new one is almost
double the size.
- better access. no more bolts to unscrew, just one knob.

add ons :
- I plan navigation lights, powered by a set of small batteries (like the one in your watch)
this will be housed separately in the tower (using up that precious extra ballast volume)

The WTC itself is still standard DIY PVC thin walled drain pipe, the endcaps are
standard PVC end caps, mutilated with a lathe.

Image


Image
Regards,

Ronald van Aalst

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Postby Scott T » Wed Nov 05, 2008 1:14 pm

Looks good.
Where do you get a suringe that
large and what is it normally used
for?

-Scott
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Postby tsenecal » Wed Nov 05, 2008 3:22 pm

raalst

very simple, yet elegant way of getting the servo movement to the pushrods on your diving plane/rudder servos.

and I second all of Scott's questions and more about the ballast tank. could you post more pics/descriptions on how you've got that set up?

tim
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Postby raalst » Wed Nov 05, 2008 4:20 pm

Unfortunately, I had the syringe long before Ibuilt the WTC.
As far as I can remember I bought it in the shop where I get my
polyester, epoxy etc. either that or I found it buried in the local DIY.

about the drive mechanism, it is a lineair servo, which can be directly
plugged into the reciever (and give you a proportional ballast tank as well).

Image

don't hesitate to ask further questions.
Regards,

Ronald van Aalst

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Postby redboat219 » Thu Nov 06, 2008 1:09 am

how many cc of water do you take in to dive?
"Make it simple, make it strong-and make it work!" - Mikhail Mil
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Postby Sub culture » Thu Nov 06, 2008 6:29 am

If you know a local vet, have a word with them. they use large syringes for all sorts of things. If you know a vet who deals with horses, then they'll almost certainly have large syringes!

I'd hazard a guess that Ron is using a 100ml syringe.

http://www.medekit.com/controller/Catal ... -Each.html

Andy
'Why are you staring at an empty pond?'

Want to dive your boat in crystal clear water? Then you had better Dive-in- http://www.diveintomodelsubmarines.co.uk
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Postby raalst » Thu Nov 06, 2008 6:05 pm

@andy
140 ml, it is the largest I ever saw...
but because the servo travels only 50mm it will contain slightly less than 60 ml of water.

@Redboat
I don't know yet how much water I need to dive, but I guess I will use all 60 ml
in order to lower the wtaerline as much as possible in surface running.
Regards,

Ronald van Aalst

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Postby Bill Harris » Tue Sep 15, 2009 11:27 pm

FWIW, Sig Mfg (model airplanes) has a "fueling syringes" that go upto 5 ounces (140mL). Readily available from your LHS.

Upper left of this menu framelet...

http://www.sigmfg.com/cgi-bin/dpsmart.e ... u_02SIG_01
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Postby raalst » Wed Sep 16, 2009 4:04 am

Big Thanks,
finally a source of large syringes !
Regards,

Ronald van Aalst

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Postby hakkikt » Wed Sep 16, 2009 3:42 pm

100 ml syringes are no problem to get here from the pharmacy around the corner.
- mobilis in mobili -
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