Have now purchased 2 Feigao Brushless motors, a rudder, Futaba servo, Futaba radio and reciever, Jeti Navy esc, goldplated connectors and have sent the whole lot off to a mate who does circuitry to wire it up for me.

That was an expensive little excercise, but the combo adds up to really good potential.

Will see how it goes.

In the interim, bought a NQD HighWind and stuck the 2 modded 700s in it and it rocks along. Probably better than the hydro.

Gonna keep on with the hydro till it is a killer, mainly coz it looks cool.

Next option after that is a single NEUMotors 2215 1.5y BAM motor from www.performancehobbies.com.au but with a pricetag of $650, i'll try other things first.

Anyway back to it.

You are going to need two brushless esc. One ESC can not control the timing of 2 brushless motors.

What brushless feigao motors dd you get? Which Jeti ESC did you get, as they name everything the navy.

Ryan

Wooooooooo sound's GR8 get vid of it and if you can get a sat-nav and get the max speed good luck with it Brian

FG36 is what is on the housing of the motors. Yeh, wiring guy told me that now too about the esc. bugger, more money. Doesn't matter.
In the mean time we are considering just putting the hydro in the cupboard for a while, and doing the single engine setup with what we have into the Highwind.
It is an easier boat to setup one engine and a rudder. And in standard trim, it is heaps faster than the hydro, so should be even better once modded.
That way i don't have to buy another esc either.

get ya money out,, i'ed love 2 see your Hydro go with them motor's in it lol

I am going to have a good this weekend in striping some weight from my hydro but not replacing with coke cans!!!!

I need some other stats from you all as follows:-

total boat weight all up ?
single or double motor drive?
flexishaft or striaght shaft drive?
Prop type diameter and pitch?
motor size and free running rpm?
battery pack size ie volts and Amps?
battery pack weight?
motor weights close as possible?
current estimated speed in the water?
Cost of hardware ie motors, controller, batteries but not radio gear?

Can any body help.
From this information we should be able to select the most appropiate setup in terms of hardware, prop, motor, shaft pitch etc. this should also help other new users of the NQD speed storm

Why not use a big Brushless motor with a single rudder on the hydro? I personally do not believe it would be more difficult for the hydro vs mono.

A single motor setup will be much more efficient and faster.

Ryan

My Boat stats

My Boat stats

total weight = 2900g
2 x 550 motors running single drive shaft, prop free running speed 25,000 rpm
batteries 12 volts, 3300mah, weight 640g
straight shaft with x45prop
estimated speed around 20mph
motor weight each = 200g
total cost of motors, shafts, prop other hardware, batteries = £70


my target is to replace the nimh battery packs with lipo packs, increase the rpm of the prop and increase the prop size to 50 with a 1.4pitch.
Target weight to achieve all up 2100g.

i would appreciate all other stats

Decided to completely change the power setup.

Stripped out the double motor belt drive single shaft and placed two shafts with a 550 motor direct drive to each shaft. Just ordered a LH and RH prop 40dia 1.4pitch.

The motors i placed back from the cg of the boat and 60mm apart from centre line, thanks fonzy for the advise on cg.

I intend to glue the top and bottom parts of the boat together to stop water leakage.

I have also stripped out the excess plastic inside the hull. saved 300g in weight.

Once complete i will try the boat with the Nicads 12v 3300mah. I will also try a Lipo pack to see if the saving in weight will make much difference.

Wish me Luck. Keep up the Mods.

Hey, that's pretty near identical to what I had running in mine last, got ok speed out of it, but probably would've gone better if I had used proper props instead of stock. A pic of it is here: http://smg.photobucket.com/albums/v4...Anch=imgAnch91
Damn don't seem to have a pic of the internals, shall have to find one.
Good luck!
EDIT: ohh and sorry but due to it being now stripped I can't really give much info regarding the weight and such, but the total cost of the mods were $20 Aus and a long night of modding.

Thanks for the info and pic.

Did you change the motors if so what type and what rpm? did you take a video of the boat running? if so can you post it on http://www.youtube.com

Stick the boat on a set of scales with battery packs inside to give total weight.

Heh problem with the weight is it's totaly stripped out (no more electronics/motors just a bare hull) so it'd be slightly inaccurate lol!
I posted this vid a while back, this is it on 12v http://glen.botclips.net/hacknqd.wmv
Regarding RPM of the motors, not quite sure, they're just standard cheapo 550's so i'd think around 18000rpm or so, not sure if it was getting to that in the water though.

I have stripped all the excess plastic out of this boat including the water seal. I have also joined the two hulls and will test for leaks in the next couple of days. The two 550 motors and shafts are in.
I just ordered a left and right 42dia 1.7pitch props from the Prop Shop in the UK.

Hope to have the props and lipo 11.1v 3500mah pack in the next 10 days for another test at the lake.

Keep going with the mods.

have you tried your boat with one of the motors disconnected from the shaft?

NO Y u ask ??

Fonzzy

I was wondering what difference it would make removing one of your motors. It would give you an idea if the weight is an issue.
It may be worth trying.

i run 1 500 motor b 4 but the prop had 2 b so small it keepted pulling in air

and went slow if it went at all lol i put a big prop on and burnt out 2 motors [&o]

latest test run was great with good speed until the boat caught fire from amps overload on wiring. Not sure of the speed what do you think.

check the video out

http://www.youtube.com/watch?v=01AOkOPMUIw

Boat set up 2 no 550 motors
2 no M4 prop shafts
2 no K40 props left and right
12volt NimH 3300mah battery pack

The boat hull slightly melted when fire broke out.

I am going to mod the smaller version of this boat before rebuilding the above boat.

What gauge wire are you using in order for a fire to break out?

Ryan

hey,
i am new to rc boating and have ordered a speed storm.
i was wondering how you lot are running two 550 motors?
do u have a 3 channel remote and 2 esc's or if u run both motors off the same esc how do you do it?
do you have to put the motors in parralell to stop voltage drop on the motors?
thanks alot

Damn that speed isn't too bad, shame about the video quality... Is it just me or does it looke like another hydro hull to the NQD? Wouldn't be cheating now would you? lol
And we run the motors in parallel of the speed controler so there is no voltage drop.

No cheat this is a NQD speed storm Lt.

To classify it as Lt (Light) i spent an evening removing all the inside excess plastic IE screw holes, braces, water barrier to shave off 300g in excess dead plastic.

I Then joined the two hulls by filing a chamfer along the edges of the top and bottom hulls and applied epoxy into the groove, similar to butt welding.

After joining the two hulls i installed the hardware which was two 550 motors running two shafts and two K40 props (left and right).

The electrics burnt from the harness to connect the two Nimh 3300 packs 6volts each pack providing 12 volts at each motor.

Anyway i have removed this setup as this setup up required high amps to each motor which caused the electrical harness to burn and would reduce the run time even with thicker gauge wire.

I am going to back to my two motor belt drive system and single shaft, maybe use two 600bb motors this time with a 42 dia 1.4pitch prop.

keep up with the mods. we may even break the 35mph barrier.

It's possible if someone fits some sort of rocket to theirs... any takers?
Heh that or some hardcore brushless...
Actualy along that note i've got 36v's worth of 2/3A 1200mah cells (really small). Could get a huge brushless, and make it run at insane speeds for about a minute or so? [>:]

As long as your big BL motor doesn't draw more than 25A or so.

Ryan

hi there, i'm also in.....
i actually install a brushless mega 16/15/2 with a 35 mm propeller (the one of the boat, it seems it's the right size for this motor )
driven with a castle creation 45 amps, and will fit some thunder power 2100 3S lipo pack..........will see what happen soon,
all hardware will be "hand made"......
hi sjn...happy to see you there too...............i see that we have the same ideas...... ;-)
(my JJ1400 and hawk haven'fly as i have other things to do (a extra 330 2 meters, a tiger moth 2 meters and a p47 1.80 meters scale with the 3 retracts) )
@+
vincent from new caledonia