Author Topic: Philippines scale bangka boat  (Read 4690 times)

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seathug

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Philippines scale bangka boat
« on: September 06, 2014, 11:19:28 »


My new historic rc boat
In need of all the electronics


Ill keep this one very simple
My question for  the motor
What brushed motor is the most efficient?
Im trying to get the longest run using a nihm battery
Thanx guys

tbone

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Re: Philippines scale bangka boat
« Reply #1 on: September 06, 2014, 20:36:25 »
Interesting looking boat.
First thing I'd do is get the correct drive dog for that prop, look as though it's just sandwiched between two nuts with a lock washer.

Any idea what kind of rpm you need?  probably doesn't need much power, likely a small geared motor will do the trick.  Do you have any pics of the inside?

seathug

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Re: Philippines scale bangka boat
« Reply #2 on: September 06, 2014, 20:44:47 »
Hi tbone



this is the closest view of the inside
Its like a kayak
Long and narrow
That prop is just to see how it would look like
the guy I bought it from suggest using a flex drive shaft
im thinking of using a dumas motor like the one on bristolbay
and use a 5000 nihm
I want to have atleast two hours running time

seathug

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Re: Philippines scale bangka boat
« Reply #3 on: September 06, 2014, 20:51:46 »


And this is what the real thing looks like
Almost the same  :)

seathug

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Re: Philippines scale bangka boat
« Reply #4 on: September 07, 2014, 11:13:02 »
Does anyone know where I can order a complete set of flexible driveshaft with propeller on it
I wish this hobby shops makes complete sets much easier for me hehehhe

Calimero

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Re: Philippines scale bangka boat
« Reply #5 on: September 07, 2014, 13:10:09 »
Why a flexshaft and not a traditional/straight steel shaft ?

seathug

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Re: Philippines scale bangka boat
« Reply #6 on: September 07, 2014, 13:42:10 »
I think its because of the shaped of the hull and the rudder
I would love to use those straight driveshaft
like what I have on the aziz



the angle of that driveshaft
will make the motor sitting up  high I believe?

Calimero

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Re: Philippines scale bangka boat
« Reply #7 on: September 11, 2014, 09:24:27 »
Does the shaft have to be installed at that angle or could it be a little more flat ?

You probably don't need that big a motor (what size is the hull ?).

seathug

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Re: Philippines scale bangka boat
« Reply #8 on: September 11, 2014, 11:32:43 »
43 inchess long
 He suggested ill use this motor

800 Direct Drive Motor

Top RPM: 5167
Runs on 12 Volts
3 Pole
Maximum amperage draw: 5.28amps
Will efectively propel a 36" deep vee boat with a 2" prop Can also turn props up to 3.5" @ 2500 RPM
Motor mount included.
Overall Length: 4 1/4"
Can Length: 3"
Can Diameter: 2"
Drive Shaft Diameter: 1/4"
Drive Shaft Length: 1/2"


I  think this motor is over kill for this plywood boat
And im afraid of my run time will be short with that motor
Im trying to get at least 2hours of run time using nihm.battery

« Last Edit: September 11, 2014, 11:38:25 by seathug »

seathug

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Re: Philippines scale bangka boat
« Reply #9 on: September 11, 2014, 11:34:35 »
I think if the motor or the driveshaft is more slanted the props will hit the back of the hull?
And cant push back the props  because of the rudder
« Last Edit: September 11, 2014, 11:37:39 by seathug »

tbone

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Re: Philippines scale bangka boat
« Reply #10 on: September 11, 2014, 20:52:24 »
Judging by that pic you can probably angle the prop shaft a little more flat and moving the prop towards the rudder will allow it to be levelled out more.

As for the motor, the boat doesn't look too heavy, maybe you can get away with a smaller motor.
Do you have a motor for it?  If not you could possibly try one of the motors from your Aziz and see how it does.

seathug

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Re: Philippines scale bangka boat
« Reply #11 on: September 12, 2014, 08:42:14 »


Direct MFA COMO Drive 500 Size Motor

This high quality motor comes with motor mount and noise suppression compacitors.
Specifications:
-1/8" (3.2mm) Driveshaft
-6-12 Volt Operation
-13,350 RPM @ 12 Volts
-1-3/8" Can Diameter
-2" Can Length

And pair it with this esc



Tio Marine 15 Amp Electronic Speed Control


Forward and Reverse Marine ESC
NEW built-in failsafe to protect against complete loss of signal or when out of range (compatible with all manufacturers recivers)**INDUSTRY FIRST***
Absolute short circuit and motor overload protection

-15A Current limit
-100% Waterproof
-6-12Volt (Input voltage)
-Power Connection made with Tamiya Connector
-Motor Connection made with Bullet Connectors
NOT FOR USE WITH A BRUSHLESS MOTOR

QUESTION is woukd this esc work for this motor?





And one of this


that should do it


« Last Edit: September 13, 2014, 11:25:02 by seathug »

Calimero

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Re: Philippines scale bangka boat
« Reply #12 on: September 12, 2014, 10:04:07 »
Looks a little wild to me.

How fast are the real ones ? What scale/scaleish is your model ?

seathug

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Re: Philippines scale bangka boat
« Reply #13 on: September 12, 2014, 12:37:54 »
Scale size not sure hahah
But  the lengths is 43"
With is 5"

Historic boat still being used today in Philippines
This boats are used for fishing island hopping and for tourists
Some are long over a 100feet long
« Last Edit: September 12, 2014, 12:47:22 by seathug »

seathug

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Re: Philippines scale bangka boat
« Reply #14 on: September 12, 2014, 12:45:51 »
The real ones not to sure how fast thkse things go
But they use any vehicle engines like trucks buses engines hahah
15 knots probably
But they have a racing bangka
Those guys are crazy no protection of any kind

Watch this video
I think this is cool smaller version of what im going to get
rc boat tibal-og part 2: http://youtu.be/zqR0rMehvWU


racing bangka
Bancathon 2014 "Karera ng Bangka Para sa Kalikasa…: http://youtu.be/DdTmvqYpOHI

this race makes me laugh so hard hahahahah
It looks fun though