Cat Hull Plans

Cat Hull Plans Gallery slideshow

View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Search This Thread

Printable Version

All Forums >> RC Boats >> Speed - Electric >> Cat Hull Plans

Page: [1]

Message

<< Older Topic Newer Topic >>

Cat Hull Plans - 1/24/2013 8:51 AM

Ratliff

Posts: 5
Score: 100
Joined: 1/23/2013
Last Login: 4/9/2013
From: ZhongshanGuangdong, CHINA
Status: offline

I'm looking for Cat hull plans somewhere in the 42" range. I'm new to boating hobby and would like to start a scratch build. Any help or pointers in right way would be awesome! thanks!

Hide Signatures

Post #: 1

RE: Cat Hull Plans - 1/24/2013 10:47 AM

siberianhusky

Posts: 533
Score: 110
Joined: 11/24/2009
Last Login: 5/23/2013
From: Peterborough, ON, CANADA
Status: online

There are free plans out there for a boat called the maxcat, never built it but there are some build threads out there for it. Supposed to be a good running boat. No personal experience with it though, never seen one in person.

_____________________________

Damn huskies ate it!

Hide Signatures

(in reply to Ratliff)

Post #: 2

RE: Cat Hull Plans - 1/24/2013 12:45 PM

Ratliff

Posts: 5
Score: 100
Joined: 1/23/2013
Last Login: 4/9/2013
From: ZhongshanGuangdong, CHINA
Status: offline

thanks SH! As this will be my first build, what would be a good size hull for me to start with? What kind of wood? What size motor/ESC/battery combo would be good with this?

Hide Signatures

(in reply to siberianhusky)

Post #: 3

RE: Cat Hull Plans - 1/24/2013 9:43 PM

siberianhusky

Posts: 533
Score: 110
Joined: 11/24/2009
Last Login: 5/23/2013
From: Peterborough, ON, CANADA
Status: online

Never scratch built a cat but have built a number of scale hydros, I mostly use 1/8 and 1/16" light ply for the structure, 1/4" for transoms on the bigger boats.
I'd look at something about 36", good size for a pair of 6s 4 or 5000mah batteries run in parallel and maybe a leopard 4092 somewhere around 1300kv or so, a T-180 esc would work but you would be at the voltage limits, a high voltage esc may be a better option but expensive.
If you go around 42" you are looking at an 8s setup to keep it reliable, then it costs a lot more for everything from chargers to servos.
My personal preference is for boats around 30-32" running 4s setups, I just find it to be a very cost effective size to run. The hydros are a little bigger but they have lower drag so draw less amperage, they are 1/10 scale.
My dream is a 1/8 scale boat, going to have to budget over 1000 for that build.
Hope this helps a bit.

_____________________________

Damn huskies ate it!

Hide Signatures

(in reply to Ratliff)

Post #: 4

RE: Cat Hull Plans - 1/25/2013 6:07 AM

Ratliff

Posts: 5
Score: 100
Joined: 1/23/2013
Last Login: 4/9/2013
From: ZhongshanGuangdong, CHINA
Status: offline

Thanks for all the help man. I still need some help though....

So, let me see if i have this right. If I run say 32" Cat, I should run 4S LiPo around 3700 maH with 55c. That would put me in the range around 1800 Kv for my motor and around 120A for my ESC. Is this right? What would my RPM's be? what would the speed / run time be like?

Also, would it be best to use 1 battery or 2? If 2, how do i parallel connect them?

Hide Signatures

(in reply to siberianhusky)

Post #: 5

RE: Cat Hull Plans - 1/25/2013 12:20 PM

siberianhusky

Posts: 533
Score: 110
Joined: 11/24/2009
Last Login: 5/23/2013
From: Peterborough, ON, CANADA
Status: online

A pair of the 3700 mah packs would be good, you would need to make up a parallel adapter using the connectors you choose.
Getting up around that size with a 4074 or 4082 I'd run a 2000-2200kv motor and a t-180 esc. Depending on how well it's set up you should see at least high 50 mph with that setup, a bit more once you get it dialed in. Start with about a 42mm prop for the first runs until you get the CG and strut setting right then you can probably go up to about 45mm, but keep an eye on the temperatures.
That should be a very reliable setup with enough overhead on the esc to allow for a few first run setup mistakes. Many people have used that exact setup on cats about 36" with great success.
Some of my 4s boats use a pair of 4s 4000mah packs in parallel, smaller ones like my Motley crew I run a pair of 2s 5000mah packs in series, much smaller boat and motor though.
My stuff is all setup to run about 3-3.5 minutes, about race length, any longer and the heat starts to build up, could easily go down on prop size, lose a bit of speed and get longer runtimes.
For the batter adapter most guys solder two sets of battery connectors to the battery leads of the esc, then connect both sets of + and - leads from the batteries to the esc. SOme brands of high amp esc come with two sets of battery wires from the factory for this.
Either the Swordfish 200 or T-180 esc are pretty popular, in our group we've had no issues with either. There is also Castle if you have deep pockets, but top end escs!
I'd also go with Leopard motors, there is another type available now called TP, lately I've been reading about people having issues with the rotors.

_____________________________

Damn huskies ate it!

Hide Signatures

(in reply to Ratliff)

Post #: 6

RE: Cat Hull Plans - 1/25/2013 1:09 PM

martno1fan

Posts: 11153
Score: 221
Joined: 1/20/2005
Last Login: 5/19/2013
From: blackpool, UNITED KINGDOM
Status: offline

I have some plans for a Mystic Cat could be scaled to almost any size.

< Message edited by martno1fan -- 1/25/2013 4:07 PM >

_____________________________

waveridermouldings

Hide Signatures

(in reply to siberianhusky)

Post #: 7

RE: Cat Hull Plans - 1/27/2013 11:20 AM

Ratliff

Posts: 5
Score: 100
Joined: 1/23/2013
Last Login: 4/9/2013
From: ZhongshanGuangdong, CHINA
Status: offline

Thanks SH!

I will be ordering some parts this week and the wood is on its way! I'm pretty geeked about starting this build and i will post pics as i'm building. I might need some help with the skining the hull, a few hatch questions, and ultimately some placement questions/ideas of the parts!

Mart,

Can you send me the plans? Also, what is the best way to scale the plans to 34" inch hull on A0 paper? Thanks!

Hide Signatures

(in reply to martno1fan)

Post #: 8

RE: Cat Hull Plans - 1/27/2013 11:51 AM

martno1fan

Posts: 11153
Score: 221
Joined: 1/20/2005
Last Login: 5/19/2013
From: blackpool, UNITED KINGDOM
Status: offline

The plans are for a 34" hull if memory serves,you can either take the files to a printers or print seperate sheets and tape together which is tricky but doable.Ill post a pic of a 70" hull someones made from these plans its awesome.
Mart

Attachments

Click for fullsize

_____________________________

waveridermouldings

Hide Signatures

(in reply to Ratliff)

Post #: 9

RE: Cat Hull Plans - 1/28/2013 3:59 AM

Joshsubmec

Posts: 159
Score: 100
Joined: 2/24/2012
Last Login: 5/23/2013
From: Waterford, CA, USA
Status: offline

Hey Mart,

Are these plans free? If so could you send an email of the file on over to me please..ill give you my email if there free.

Thanks josh

_____________________________

Zippkits jae .12 outrigger (SOLD), GP Pete''''''''N Poke, thunder tiger outlaw, E-Flite piper Pawnee.

Hide Signatures

(in reply to martno1fan)

Post #: 10

RE: Cat Hull Plans - 1/29/2013 11:59 AM

martno1fan

Posts: 11153
Score: 221
Joined: 1/20/2005
Last Login: 5/19/2013
From: blackpool, UNITED KINGDOM
Status: offline

Yea of course mate send me your email.
Mart

_____________________________

waveridermouldings

Hide Signatures

(in reply to Joshsubmec)

Post #: 11

RE: Cat Hull Plans - 1/29/2013 9:10 PM

Joshsubmec

Posts: 159
Score: 100
Joined: 2/24/2012
Last Login: 5/23/2013
From: Waterford, CA, USA
Status: offline

Alright pm sent Mart

_____________________________

Zippkits jae .12 outrigger (SOLD), GP Pete''''''''N Poke, thunder tiger outlaw, E-Flite piper Pawnee.

Hide Signatures

(in reply to martno1fan)

Post #: 12

RE: Cat Hull Plans - 1/31/2013 7:29 AM

Ratliff

Posts: 5
Score: 100
Joined: 1/23/2013
Last Login: 4/9/2013
From: ZhongshanGuangdong, CHINA
Status: offline

Mart, Do you know how this boat, made from the plans, performs?

Hide Signatures

(in reply to Joshsubmec)

Post #: 13

RE: Cat Hull Plans - 1/31/2013 2:16 PM

martno1fan

Posts: 11153
Score: 221
Joined: 1/20/2005
Last Login: 5/19/2013
From: blackpool, UNITED KINGDOM
Status: offline

quote:

ORIGINAL: Ratliff

Mart, Do you know how this boat, made from the plans, performs?

NO idea but see no reason why it wouldnt perform well.

_____________________________

waveridermouldings

Hide Signatures

(in reply to Ratliff)

Post #: 14

RE: Cat Hull Plans - 3/14/2013 12:39 AM

warfile

Posts: 77
Score: 100
Joined: 1/30/2008
Last Login: 4/5/2013
From: Porto, PORTUGAL
Status: offline

quote:

ORIGINAL: martno1fan

I have some plans for a Mystic Cat could be scaled to almost any size.

Hi,
Been reading for a while and dicided to have a go at this, building a cat! :-)
Can you send me the file?

Thx in advance
Rui

warfile@gmail.com

Hide Signatures

(in reply to martno1fan)

Post #: 15

RE: Cat Hull Plans - 3/14/2013 8:53 AM

martno1fan

Posts: 11153
Score: 221
Joined: 1/20/2005
Last Login: 5/19/2013
From: blackpool, UNITED KINGDOM
Status: offline

On its way mate.
Mart

_____________________________

waveridermouldings

Hide Signatures

(in reply to warfile)

Post #: 16

RE: Cat Hull Plans - 3/15/2013 9:11 AM

john_j

Posts: 14
Score: 100
Joined: 3/29/2012
Last Login: 5/23/2013
From: , UNITED KINGDOM
Status: offline

@martno1fan-please be so kind and send me the plans also : paultbg@gmail.com
Thanks

Hide Signatures

(in reply to martno1fan)

Post #: 17

RE: Cat Hull Plans - 3/17/2013 6:42 PM

aum-offshore

Posts: 89
Score: 105
Joined: 11/7/2008
Last Login: 5/18/2013
From: Bangkok, THAILAND
Status: offline

see here.

http://www.modelbouw.gompy.net/boottekeningen/

_____________________________

aum offshore rc speed boat thailand
http://www.rc8riew.com/ModifyJetBoat.htm

Hide Signatures

(in reply to john_j)

Post #: 18

Page: [1]

All Forums >> RC Boats >> Speed - Electric >> Cat Hull Plans
Page: [1]

Jump to:

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

0.564RCU1