Building my Thor Alfa - a couple of questions

[nick-c]

Hello all,

My Dad and I are building up my Alfa kit

D&E 3.5 WTC

Only 2 of the exit holes are used in the aft bulkhead (rudder & rear planes) what's the best way to seal the 3rd hole?

Thor electronics

The ESC, Failsafe and auto leveler are not in cases, what's the best way of sticking them/ placing them in the aft compartment.

Thanks,

Nick

[boatbuilder1]

there is a couple of

there is a couple of ways to seal that hole
use 1/8 to 3/16 thick styrene and some K n S brass ube that is one or two times larger the the hole, heat the brass tube with mini torch or heavy duty soldering iron then punch out a disc with the heated brass tube after its cooled snad or trim to fit hole and use blue rtv gasket maker found at hardtware stores and a number of other retailers ang glue the disc in with the rtv
the other way I have method I have used is to get a capped ball point pen or a fine sharpie marker and cut the tip off and glue it in with the rtv

the eltronics are easily attached with double sided foam or carpet tape found at hardware stores

[peter w]

I use both the double

I use both the double sided sticky tape method or sometimes I like to use double sided velcro as it allows the item to be removed if it gets in the way when you are working on other areas it also can act as a shock absorber if required.

Don`t forget to post pics as you build it.

Peter W 2731UK

[JWLaRue]

Nick,

Under the assumption that the

Nick,

Under the assumption that the 3rd exit hole has one of the brass and rubber cup seals in it, I would not take the first approach that Chuck suggested.

If you would ever want to use the WTC in another sub that requires three servo outputs (or even upgrade your Alfa to make the bow planes work), I would simply block the empty shaft exit with a short length of brass rod using a pair of dubro collars to hold it in place. (One on the outside and the other on the inside.) That way you only need to remove one of the collars and pull the rod out and you're good to go.

-Jeff

[anonymous]

Or....
You could always make the

Or....
You could always make the bow planes functional....

You can easily fit 3 std servos side by side in the 3.5. Drive the bow planes with the transmitter and have the APC drive the stern planes. Y-connector from the depth control channel to the two servos, snip the signal wire to the branch heading to the APC.

[nick-c]

Thanks for the tips guys

Thanks for the tips guys

I don't think I made myself clear re: the electronics.

My ESC, APC & Failsafe are all uncovered circuit boards, how can I stick / secure a circuit board safely? (the WTC instructions warn that some tapes etc. are conductive)

thanks,

Nick

[chips]

Apply some heat shrink tubing

Apply some heat shrink tubing to the electronics circuit boards. You can then use servo tape or RTV to attach the covered boards to another surface. You may have to shop around for the correct size of heat shrink tubing, Radio Shack may not have it, perhaps a Ham radio shop.

Look for small "project boxes" at Radio Shack or an electronics store. Or you could make your own from sheet styrene.



Edited By chips on 1118079965

[nick-c]

Managed to get some heatshrink

Managed to get some heatshrink and it worked a treat thanks

Now i've got another question for you guys, the APC is the Thor PC2-A. However I dont have an instructions for it. I presume the 2 pots adjust the sensitivity and servo travel. Is this correct?

cheers,

Nick