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Old Aug 16, 2008, 08:56 PM
brians306
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predator outrigger ?


does anyone know about the plans on here for the predator outrigger. i
downloaded them and the boat looks pretty small. are the plans full
size or do they need to be scaled. thanks new to r/c boating


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Old Aug 17, 2008, 08:14 AM
nigec
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Re: predator outrigger ?


the easy way to check how close they are is print out the part where the
out rigger tubes go and check the hole size?


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Old Aug 17, 2008, 03:01 PM
brians306
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Re: predator outrigger ?


what if they are not the right size. what does one do then thanks....


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Old Aug 17, 2008, 05:42 PM
deestingray
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Re: predator outrigger ?


If you have the PDF version of these plans, take them to your local
print shop, something like Kinko's I think for you guys in USA. They
should be able to print them full size for you for minimal cost. I got
some done in Australia for about $3.60 a sheet recently.
Down on the bottom left of your PDF viewer, it tells you how big the
sheet is, the one that I have tells me that it is 36 inches by 24
inches for the sheet which is about A2 or A1 size.
It is a good idea to get a couple of copies, one as a reference and one
to cut up, you can literally cut the shapes out and stick them onto the
material that you are going to use.


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Old Aug 18, 2008, 05:05 PM
brians306
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Re: predator outrigger ?


thanks deestingray. now i see. how are things down under mate?


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Old Aug 18, 2008, 08:47 PM
deestingray
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Re: predator outrigger ?


Excellent, you shouldn't go wrong at a print shop.
Down under is all good, we are in winter at the moment, but it is still
warm enough to run boats with nice days. Coming up to the best time of
year in a month or so.


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Old Aug 25, 2008, 12:59 PM
tobias
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Re: predator outrigger ?


I've build this predator outrigger, with a strait shaft.
I've got a speed 600 motor an a 40 mm graupner prop.
It doesn't go very fast
Am I doing something wrong

GR Tobias (NL)


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Old Aug 26, 2008, 07:05 AM
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Re: predator outrigger ?

I am new to model boats and think you have made the same mistake I did on my
first model - the wrong motor.
I suspect you are using a brushed motor like this
(http://www3.towerhobbies.com/cgi-bin...&I=LXJ765&P=7). It operates
at 11,000 RPM and puts out 145 watts of power. The power and RPM are not
high enough to generate much speed. After a steep learning curve, I'm on my
second boat. I'll share what I've learned about motors with the hope that
others will correct me where I am wrong or add to the discussion so we can
both learn something.
There are two basic types of motors: Brushed and brushless. In general,
brushed motors are rated by the number of turns (poles in the armature) -
The fewer the turns, the higher ther RPM but the greater the current draw.
From memory, the motor cited above has 22 turns. Typically, boaters will
use a 7 to 12 turn brushed motor from a model car, such as
(http://www3.towerhobbies.com/cgi-bin...&I=LXRBE1&P=7), which
operates at a much higher RPM.
I have switched to using brushless motors. Brushless motors are given a Kv
rating, the number of RPMs per volt, and a wattage rating, of power produced
(745 watts equals 1 HP). Two types of brushless motors are available:
outrunner and inrunner. Since outrunner type motors need air for cooling,
they aren't usually used in boats. In-runner motors can be water cooled and
are the type typically used. My latest model is a 24" rigger with a Feigao
540L motor (http://www.offshoreelectrics.com/products.php?cat=42). At 7.2
volts it turns over 19,000 RPM. Riding on the outriggers and the prop, I
would estimate its speed in the 40 MPH range (double that of my first boat).
I have found the folks at Offshore Electrics to be very helpful, answering
several questions in the building of my second boat. Too, you may want to
see what the manufacturers are offering - here's an example:
http://www3.towerhobbies.com/cgi-bin...=LXMDJ4**&P=ML.
Here are a couple of interesting web sites I've found:
http://www.fastelectrics.com/default.asp
http://www.drcwebservices.com/ffe/Default.htm
http://www.twistedliquidracing.com/Home_Page.html
http://bbyracing.com/elecmonohulls.asp
http://www.minicatracingusa.com/Samu...is%20here.html
I hope all this helps and I'm looking forward to the responses from others.
Randy

"tobias" <tobias.3epve4@no-mx.forums.yourdomain.com.au> wrote in message
news:tobias.3epve4@no-mx.forums.yourdomain.com.au...
>
> I've build this predator outrigger, with a strait shaft.
> I've got a speed 600 motor an a 40 mm graupner prop.
> It doesn't go very fast
> Am I doing something wrong
>
> GR Tobias (NL)
>
>
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> tobias
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Old Sep 04, 2008, 10:00 AM
Closed Account
Joined Jul 2006
1,474 Posts
I was reading your posts on the rigger. The one free bie i see is at 33% and i brought it out to 75% which was close to 21" or 525mm which is a nice size. My ? is , do you know where lazer cutting can be done? I see on OSE Osborne has a lazer cut but it is 26" long and looks like a quality lazer cut unit. Now if you get lazercut unit, sand the edges to be glued as they will hold alot better. --------- The Gentleman from Sweden has a excellent unit and i would try it for myself but have WAY to many boats and not enough money to do justice for them all! Best of luck on your hunt!
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Old Sep 09, 2008, 07:08 PM
brians306
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Re: predator outrigger ?


i have started my boat build things are going good. although i will need
some assistance in the wiring of the motor speed control and servo. i
dont know how if someone could. send a wiring diagram to email or
something please


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Old Dec 24, 2008, 06:00 AM
abcd562
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Re: predator outrigger ?


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Old Jan 31, 2009, 02:10 PM
georgegittins
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Re: predator outrigger ?


I am also 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?
Will a 4mm flexishaft be OK with an aluminium strut?
Does a flexishaft have much effect on the RMP of the motor?
What rudder shall I use?

Thank you


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