a bunch of questions

[Diegoboy]

One note.
Think of the ESC as merely a gate that opens & closes. Speed is determined by the motor, batteries, prop, etc.
you could put a 500A ESC in there, it won't go any faster, it'll just be able to handle a bigger motor if you ever put one in.

[LST XXL]

i know that....i think i'm just going to go with my origanal plan of 540L with 120amp esc

[Diegoboy]

Ok. That setup (depending on the winding of the motor) should be good to xfer to a newer hull down the road.

[LST XXL]

ok guys now i'm woundering what kv i should use...what is normally used in boats??

[Diegoboy]

I would go 8L or 9L on 3S

[LST XXL]

i was planing on running two 2s hooked together to double the mah...what mah is the most i can run??....and what motor on this set up?

[ride1226]

2s isnt going to go that well. probably low 30s. I have two 29 inch hulls, one cat and one vee, both powered by the SV motor and esc runnin on two 2s 4900mah batteries hooked up to be 4s. I get about 7 minutes runtime and just around 40mph in both boats and that puts plenty of a smile on my face. I really suggest going that route rather than the hydra. When I build a bigger boat I will go the way you want but for these hulls, it works awesome and doesnt break the bank.

My hulls are the aeromarine titan 29inch deep vee and the skunkworks cat

[LST XXL]

i'm not using the hydra..i found n esc to use...

i think i'm going to run dual 3s lipo's hooked up to double mah

i just need to know what would be a good kv for the boat....i can get info on the other stuff elsewere

[Blackjack-sven]

This is what I would do.

Motor and ESC: Aquacraft sv27 setup. 1800kv motor with a matched esc. I personally would not run a car esc in a boat as there is no cooling system for it. I wouldn't go any bigger than a 2000kv motor with that hull. You don't want to loose the equipment you just bought. http://www.offshoreelectrics.com/pro...=dh-aqcom-1800

Batteries: I run two 4600 Ni-Mh 7.2 volt intellect batteries in series with my Blackjack and it hits 35+ MPH on a 1500kv motor. With the SV27 setup you should get more speed as well. And you can run 90 billion Mah without a problem. Your run times would be so long though that you would die before they did. It's the voltage you need to worry about.

Rudder/strut: I would run a single prop through this strut/rudder system. http://www.offshoreelectrics.com/pro...502b15&cat=123

[LST XXL]

thanks for that reply.

i'm not going to run a car esc i'm planing on running a lower brand 120amp boat esc and feigao 540L motor..by the sounds of it 1800 kv would be good???i want to run lipo..and that is the rudder/strut i'm going to use

cold i run lipo with the set the you posted?

[Blackjack-sven]

thanks for that reply.

i'm not going to run a car esc i'm planing on running a lower brand 120amp boat esc and feigao 540L motor..by the sounds of it 1800 kv would be good???i want to run lipo..and that is the rudder/strut i'm going to use

cold i run lipo with the set the you posted?

Everything I laid out in my last post can handle up to 4s lipos(2x2s in series). Oh and yes, anything 1500kv-2000kv will be fine. Just don't go faster as your hull might blow apart and you'll loose your stuff. One more thing, I run the Octura x642 prop now with a 1500kv motor, 2 trak power 2s lipo's, and it goes ballistic. Take a look for yourself. This vid is with the stock prop and mamba max esc(temporary).

http://www.youtube.com/watch?v=CRIR2uRrOvs&feature=channel_page

[LST XXL]

ok maby i will just get that set that you posted...and damn that boat is fast lol

would i be able to run dual 3s or would it have to be dual 2s?

[M.M.]

I beleive you could only run dual 3s if you ran them in parallel so that the voltage would not blow the ESC. But if you ran two 2s in series you could get more voltage but less runtime.

[Simon.O.]

The hull in question is a Great Planes Wildcat. I have one.
Originally had a pair of brushed 550 cans.
I have all sorts of motor combos in there and it is currently setup with 700SC that has been on 14cells but not seen lipo in this hull.
It was my first boat and I did a lot to it in my quest for speed and knowledge.

IMO a XL in here would be a bit much.

If you have the patience, time , skill and materials you can do anything you want.
the boat is quite a nice looker but mine now lives on my shelf.
Here is some of its history

http://www.rcuniverse.com/forum/fb.asp?m=6722218

[LST XXL]

ok so i think i'm going to go with the kit that Blackjack-sven posted....and i'm going to run dual 3s in parrelel i think it is so the voltage is the same but mah is doubled