Evolution of RC scratch built Riva Aquarama to reach 45 km/h

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tantrasway.com
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Evolution of RC scratch built Riva Aquarama to reach 45 km/h

Post by tantrasway.com » 31 May 2014, 07:59

Hello
I would like to share some clip how we make a wood model boat run 45 km/h:

on 2013 tantrasway racing team founded with the aim to motorize runabouts and conquer limitations of speed. We reverted to the riva aquarama project. twin 1800kv brushless motors were used. Some first tests:
[youtube][/youtube]

then, with change in center gravity and shaft angle
[youtube][/youtube]

the 4th test with some adjustments:
[youtube][/youtube]

the bottom was redesigned for more hydrodynamic, the 5th test
[youtube][/youtube]

Recently, here is our newest riva aquarama special edition, it reaches 45 km/h just within 20m drag run
[youtube][/youtube]

Here are the specs of the boat:

Hull: self made by tantrasway
Motor: dual brushless motor with 1800Kv water-cooled
ESC: dual 120A water-cooled
Battery: dual LIPO 4s 4000mAh, 30C
Shaft: 4mm flexible shaft
Propeller: dual nylon 3-blade propellers
Rudder: dual CNC aluminum rudder
Standard servo with dual bearings and 180oC rotational range
Radio controller: 2.4ghz 3 Channel Radio System with 800mAh battery
Water-cooling system

Thanks for watching,
Last edited by tantrasway.com on 31 May 2014, 08:08, edited 1 time in total.
tantrasway racing team: https://facebook.com/tantrasway

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tantrasway.com
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by tantrasway.com » 31 May 2014, 08:06

sorry, if the forum 100% focus on cars, I wrongly post the thread

Regards,
tantrasway racing team: https://facebook.com/tantrasway

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Dave
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by Dave » 31 May 2014, 08:10

Hi!
You are most welcome with all largescale models here.
Boats or cars does' nt matter.

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kim.h
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by kim.h » 31 May 2014, 09:56

Nice done with the boat :thumbsup:
Söker eventuellt bra baja 5b chassi.

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Mats B
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by Mats B » 31 May 2014, 13:22

Dave wrote:Hi!
You are most welcome with all largescale models here.
Boats or cars does' nt matter.

This boat is only 1:10 scale so it does not belong here anyway, no offense ... :geek:
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by tantrasway.com » 01 Jun 2014, 17:48

Mats B wrote:
Dave wrote:Hi!
You are most welcome with all largescale models here.
Boats or cars does' nt matter.

This boat is only 1:10 scale so it does not belong here anyway, no offense ... :geek:
Thanks anyway.
What is the minimum scale or measurement to be considered "largescale" ?

Regards,
tantrasway racing team: https://facebook.com/tantrasway

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Mats B
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by Mats B » 01 Jun 2014, 17:59

Minimum 1:6 scale is considered as largescale.
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by tantrasway.com » 01 Jun 2014, 19:14

Mats B wrote:Minimum 1:6 scale is considered as largescale.
Thanks for your reply.

So the scale of a ship model is 1:100, the genuine ship is 200 m long, so the ship model - 2 m long - is considered "small". While the scale of a car model is 1:6, the genuine car is 4.68 m long, the car model - 0.78 m long - is considered "large".

:oopsboard:
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Robban
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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by Robban » 01 Jun 2014, 19:28

:sunglasses: :lol2:

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Re: Evolution of RC scratch built Riva Aquarama to reach 45

Post by tantrasway.com » 02 Jun 2014, 05:53

in fact, the boat is not that small, it's 87 cm long ( bigger than most of the model car).
Here are some more photos:

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