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Old Jan 13, 2009, 12:35 AM
emanbeng
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very new guy in RC


i am now building my new RC boat Hull (boat design taken from this
forum)... please help me what are the basic components needed to build a
complete RC boat ( thinking of brushless motor to intall on it). Thanks


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Old Jan 13, 2009, 01:37 AM
John
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Re: very new guy in RC


Which hull are you using and what size is it?


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Old Jan 13, 2009, 08:26 PM
emanbeng
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Re: very new guy in RC


thanks John, my hull is same as the WILDTHING and 24 inches in length.


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Old Jan 14, 2009, 12:02 AM
John
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Re: very new guy in RC


Sounds about a good size for a small electric boat. I guess it will all
come down to your budget, but you need the following gear:


- motor
- motor mount
- speed controller
- collet adapter on motor (to connect flex shaft)
- flex shaft
- stuffing tube
- drive dog
- prop
- prop nut
- strut
- rudder
- servo for rudder
- Radio Receiver
- Battery packs
- trim tabs (if required)


I think that's about it. Some stuff you make yourself and other gear
you are better off buying pre-made stuff.


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Old Jan 14, 2009, 06:00 PM
dwr9
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Re: very new guy in RC


Another member here (deestingray) has built a 26" version of the same
boat and seems to have had good luck with it. You might be able to pm
him and get some information from him also. Doug


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Old Jan 18, 2009, 09:23 PM
emanbeng
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Re: very new guy in RC


just want to ask...
am thinking of brushless motor...is Outrunner Brushless Motor 1880KV |
4 Turns | 1.4A Running-Light Current be enough for the hull that i
built? thanks...


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Old Jan 18, 2009, 11:09 PM
dwr9
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Re: very new guy in RC


Wish I could help you, but I know nothing about electrics. I'm sure
someone here will be able to help you. Doug


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Old Feb 01, 2009, 02:53 AM
emanbeng
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Re: very new guy in RC


what is the meaning of mode 1 & mode2 on transmitters & what the
differences from each other?

Is the 4 channel receiver enough already ???...


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Old Feb 01, 2009, 05:19 AM
Randy
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Re: very new guy in RC

Mode 1 & 2 refers to transmitters with 2 sticks, the type usually used for
aircraft and helicopters. Boats and cars usually use a transmitter with a
trigger for the throttle and a round "steering wheel" type knob for
steering. While you can use the aircraft type transmitter for boats, the
ergonomics of the sticks tend to make steering more difficult than with a
knob. At any rate, the mode has to do with the sticks on a 2 stick
transmitter. I'm not sure, but I believe Mode 1 has the throttle and rudder
on the right hand stick while Mode 2 has the throttle on the left stick.
Mode 2 is used almost exclusively here in the states.

Earlier, you asked about a motor for a 24" boat, mentioning an outrunner.
Most avoid outrunners in boats. When a motor is run without cooling air,
they usually must be water cooled to avoid overheating. Since the case of
an outrunner rotates, they can not be water cooled. Also, inrunners tend to
have a higher Kv rating than outrunners, meaning they turn higher RPMs per
volt. In a boat, you want high RPMs, but in an airplane, with it's much
larger propeller, you want to turn fewer RPMs (typically 800 to 1200 Kv).
Generally, the higher the RPMs, the lower the torque available and the
higher the operating temperatures.

I am building a 27" outrigger. I will be using an HTX 36 - 56 2700 Kv
inrunner motor from http://www.hobbycity.com/hobbycity/store/uh_index.asp.
I will be using a Turnigy 60 amp ESC from the same folks. Both have water
cooling built in. With this setup, I'm expecting the boat's speed to be 35
MPH plus. BYW, if you are looking for drive hardware or props, you might
check out http://www.offshoreelectrics.com/.

Good luck,
Randy

"emanbeng" <emanbeng.3mxbic@no-mx.forums.modelpowerboat.com> wrote in
message news:emanbeng.3mxbic@no-mx.forums.modelpowerboat.com...
>
> what is the meaning of mode 1 & mode2 on transmitters & what the
> differences from each other?
>
> Is the 4 channel receiver enough already ???...
>
>
> --
> emanbeng
> ------------------------------------------------------------------------
> emanbeng's Profile:
> http://www.modelpowerboat.com/forum/...hp?userid=7068
> View this thread:
> http://www.modelpowerboat.com/forum/...ead.php?t=1073
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> http:\/\/www.modelpowerboat.com\/forum\/downloads.htm
>



Old Feb 01, 2009, 07:39 AM
georgegittins
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Re: very new guy in RC


I am planning on making a predator outrigger from the plans from this
website, I havent made an RC boat like this before so I will be grateful
for your help especially for these questions:
Will this Turnighy funjet 3900kv Brushless Inrunner motor be OK?
Does a flexishaft have much effect on the RMP of the motor?
What rudder shall I use?
What ize and type of prop shall I use?
If there is anything else I need to know please tell me.

Thank you


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