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Author Topic: Genesis cat  (Read 2014 times)

3838Derrick

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Genesis cat
« on: August 30, 2015, 03:59:38 PM »

Hi all.  I'm pretty new to fast boats and this is my first catamaran. I have just the bare hull at the moment.  I am using a flex shaft and was wondering where to place the strut. ( i.e. on the centre line, level with the sponsons,),  Any tips before I let loose with the drill, would be a great help.
Thanks,  Derrick.
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Danny

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Re: genesis cat
« Reply #1 on: August 30, 2015, 09:43:45 PM »

Hi Derrick
The strut is usually on the centreline and behind the transom, which then has an offset rudder level with the front of the prop.
So strut position depends on rudder position.
What cat are you setting up?

JimG

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Re: genesis cat
« Reply #2 on: August 31, 2015, 10:15:38 AM »

From the name in the title perhaps one like this http://www.hobbyking.com/hobbyking/store/__29871__Genesis_Offshore_Brushless_RC_Twin_Hull_1045mm_UK_Warehouse_.html
There are some photos on this page showing the prop and rudder setup.

Jim
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3838Derrick

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Re: genesis cat
« Reply #3 on: August 31, 2015, 11:04:30 AM »

It,s the Hobbyking 1045mm Genesis.  Thanks for your tips guys,
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3838Derrick

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Re: genesis cat
« Reply #4 on: September 10, 2015, 05:28:33 PM »

Well..........I put her in the water for the 1st time yesterday and to say I'm chuffed would be an understatement! She absolutely flies!!.
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Jerry Hill

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Re: genesis cat
« Reply #5 on: September 12, 2015, 09:31:13 AM »

Any pictures or video?
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3838Derrick

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Re: genesis cat
« Reply #6 on: September 21, 2015, 05:00:38 PM »

Hi all, Is there a formula for working out prop sizes.  My cat has a 3180KV motor 3/16 flex shaft and I'm running an Octura X442 prop.  (42mm Dia. X 58mm Pitch).  It's running well but I have no idea if I'm attaining the right rpm?????
Is there such a thing as Tachometer for rc boat use?
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derekwarner

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Re: Genesis cat
« Reply #7 on: September 22, 2015, 03:04:02 AM »

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Derek Warner

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JimG

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Re: Genesis cat
« Reply #8 on: September 22, 2015, 09:54:59 AM »

You could use a data logger such as http://www.rc-log.co.uk/v4-micropower-e-logger-kit-100a-cable-type.html with a suitable rpm sensor http://www.rc-log.co.uk/brushless-motor-rpm-sensor-v2.html. This also allows you to check current and voltage during the run.
For extra detail http://www.rc-log.co.uk/boat-data-recorder.html.
Alternatively some modern 2.4GHz radio sets have the option of adding telemetry including rpm and this will show on the Tx screen.

Jim
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