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Old Jan 12, 2011, 04:17 AM
Air, Land & Sea RC's.
Oblivion's Avatar
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Apparition Twin Hull, Twin motor offshore boat

my boat arrived today, the finish is pro quality. very nice.

im wondering if many others have this boat, and what setups they are using?

im hoping to use the 3s 2200 30c's that all my aircraft share but i now see others running 4-5000mah packs.

would it be possible to use 2p x 2200's per side for added capacity (total 4 packs per run) instead of buying more packs for this one RC?

a 4400 30c is about 370grams, 2x 2200 30c is about 390-400grams. very little weight difference.

it would enable me to buy more 2200's (30 or 40c) and share more packs between all my aircrafts and this 1 boat instead of having big 4400 packs i can only use in the boat.



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Old Jan 12, 2011, 04:59 AM
Zombie Apocalypse
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What's the motor and ESC specs ?
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Old Jan 12, 2011, 05:18 AM
Air, Land & Sea RC's.
Oblivion's Avatar
the tip of Colonel Lights finger
Joined Nov 2008
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http://www.hobbyking.com/hobbyking/s...dProduct=11739

aussie warehouse is currently out of stock.

others have mentioned the ESC's.. but i never got any?? (yeah im looking into it)

apparently its got twin 380 2881kv's
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Old Jan 12, 2011, 05:34 AM
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Newcastle, Australia
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My suggestion and I'm usually completely wrong but here goes.

ESC's
http://www.hobbyking.com/hobbyking/s...dProduct=10627

Batteries.
http://www.hobbyking.com/hobbyking/s...dProduct=14679
These are purely to keep the cost and some weight down.

If you have the cash go http://www.hobbyking.com/hobbyking/s...dProduct=10097

Running these big batts in parallel are going add 2KG's of weight to your boat. Buy 4 batteries and give yourself 2 good runs. Just run a single battery for each motor. But hey wait till someone else responds coz I'm probably wrong
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Old Jan 12, 2011, 05:48 AM
Air, Land & Sea RC's.
Oblivion's Avatar
the tip of Colonel Lights finger
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yeah i wouldnt need the 4000 - 5000mah's in parallel.

its a twin setup with esc's paired via Y harness but individual power to the driveline.

the 4000's you linked are the ones that most others seem to be using, 1 per side

the 5000's would add 500g per side (1kg total), which i guess isnt that much more weight than the other ~800g configs anyway but a better run time.

if i had got esc's with the boat i could test the runtime on 2200's and work out what pack would be best.
i'd be happy with a 15min run like my planes and being older i use pretty varied throttle use.

thanks for the links, that ESC is the one i was looking at, or maybe going a bit overkill and getting the 120 for about 9 bucks more.

(misleading image shown)

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Old Jan 12, 2011, 05:59 AM
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Go the 120A then more headroom. And go the 5000's you won't regret it.

My son has the 2881kV and a 70A esc as shown. Blown both, sorry.

The 2200mah single 3S got him around 3 to 4 min, paralleled up he 6 to 7min then the ESC died after 3 outings and 9 sets of batteries. The motor just jittered when the activated. I got the new ESC 120A 1 trip later half a battery cycle the motor smoked itself, melted the wiring out the back of the motor.

Bad experience......

Costly isn't it !!!!
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Old Jan 12, 2011, 06:09 AM
Air, Land & Sea RC's.
Oblivion's Avatar
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so you did get speedies with your twin?
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Old Jan 12, 2011, 06:15 AM
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No it was just a single in a 26" Vee. Top little boat and goes like the clappers for my 10year old just a pitty about cheap and poor performing running gear. It now has this in it.

Test run this weekend.
http://cgi.ebay.com.au/BL3656-kv2600...item1c1868cd3a
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Old Jan 12, 2011, 06:29 AM
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Hey bud i have a sage cat with twins,looks very simular setup.
I run 2 x 3s,3200 20c & 2 x 3s.3700 25c in mine spinning 32mm 3blades it goes very well and dont have any issues with temps etc,but i would defo think about running bigger mah rating batts.
Iv just received some 36mm 3blades so will get it back out soon and get a vid.

Heres mine.





and a vid
dragon hobby cat (3 min 0 sec)
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Old Jan 12, 2011, 06:34 AM
Air, Land & Sea RC's.
Oblivion's Avatar
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thats a beautiful boat.. the hull design with the twin scoop at the back reminds me of the king's "mini cat" which is almost identical to yours.

and.. the mini cat is apparently a cheaper labelled venom "king of shaves", replica of the championship winning 1:1 boat or something?

i love that whole race look, very nice !!

mini cat link
http://www.hobbyking.com/hobbyking/s...dProduct=13774

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Old Jan 12, 2011, 06:41 AM
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Quote:
Originally Posted by Oblivion View Post
thats a beautiful boat.. the hull design with the twin scoop at the back reminds me of the king's "mini cat" which is almost identical to yours.

and.. the mini cat is apparently a cheaper labelled venom "king of shaves", replica of the championship winning 1:1 boat or something?

i love that whole race look, very nice !!

mini cat link
http://www.hobbyking.com/hobbyking/s...dProduct=13774

Its exactly the hull setup etc as the minicat,the KOS has had some issues but i can say now iv not had any and is great fun,looking forward to trying the props on it LOL.
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Old Jan 12, 2011, 06:55 AM
Air, Land & Sea RC's.
Oblivion's Avatar
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tfl 435 ? i think thats what the markings on my prop say? (very hard to read on the brass prop)

its 35mm dia. twin blade

i got a little wood stand, but its for a V hull. D'oh !
any chance you could slide yours apart and scan it to scale, or scan next to a ruler?
i could then make my own out of balsa instead of sitting it on chunks of foam
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Old Jan 12, 2011, 07:04 AM
Air, Land & Sea RC's.
Oblivion's Avatar
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wow, you have a much better water cooling setup on the rear.
can i please get some pics or info, on how you have your water pickups?

mine has one diddly hole in the rudder in a Y config out to the two drive lines.
if your setup is do-able, i'd rather go twin pickup and improve the cooling on it

is it just two angled brass tubes with the angle cut barely in the water? that simple? (excuse me, ive only had a plastic, nitro, slow, unexciting vhull before this)
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Old Jan 12, 2011, 07:13 AM
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Quote:
Originally Posted by Oblivion View Post
tfl 435 ? i think thats what the markings on my prop say? (very hard to read on the brass prop)

its 35mm dia. twin blade

i got a little wood stand, but its for a V hull. D'oh !
any chance you could slide yours apart and scan it to scale, or scan next to a ruler?
i could then make my own out of balsa instead of sitting it on chunks of foam
ill try and scan them for you and give you the measurements aswell,but wont be till later bit busy at mo with 2 builds
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Old Jan 12, 2011, 07:14 AM
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Quote:
Originally Posted by Oblivion View Post
wow, you have a much better water cooling setup on the rear.
can i please get some pics or info, on how you have your water pickups?

mine has one diddly hole in the rudder in a Y config out to the two drive lines.
if your setup is do-able, i'd rather go twin pickup and improve the cooling on it

is it just two angled brass tubes with the angle cut barely in the water? that simple? (excuse me, ive only had a plastic, nitro, slow, unexciting vhull before this)
Yeah i can take some more pics,they are just 2 brass tubes in front of the rudder they seem to work well by all accounts will get some pics shortly.
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