am i going to blow it up if i run this

am i going to blow it up if i run this
View related threads: (in this forum | in all forums)

Logged in as Guest

Users viewing this topic: none

Printable Version

All Forums >> RC Boats >> Speed - Electric >> am i going to blow it up if i run this Page: [1]

Login

Message

<< Older Topic Newer Topic >>

am i going to blow it up if i run this - 7/24/2008 6:11:03 PM

ormer

Posts: 99
Joined: 6/9/2008
From: guernsey, UNITED KINGDOM
Status: offline

the motor is kb 4508xl 1700kv
the esc is also what was recomended a turnigy plush 100amp opto
and running 2x 3s 30c 5000mah lipos joined to run at 6 cells
going to run subsurface in a multi hull style boat it is about 36 inches long

Attachments

Click to see fullsize image.

Click for fullsize

Post #: 1

RE: am i going to blow it up if i run this - 7/24/2008 6:23:39 PM

quadracer111

Posts: 81
Joined: 7/21/2008
From: , SK, CANADA
Status: offline

I don't see a problem with it, but don't take my word, im new with this boating stuff...

_____________________________

"Yes I am from CANADA!"

(in reply to ormer)

Post #: 2

RE: am i going to blow it up if i run this - 7/24/2008 6:25:03 PM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

The KB45 is very inefficient and will draw a ton of amps. If you run 6s, be sure to start with a very small prop as 6s would be well on the "hot" side for the boat pictured.

38 000RPM unloaded would be more suited to a hydro or rigger.

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to ormer)

Post #: 3

RE: am i going to blow it up if i run this - 7/27/2008 10:35:40 PM

ormer

Posts: 99
Joined: 6/9/2008
From: guernsey, UNITED KINGDOM
Status: offline

ok i ran this the other day on a 35x prop and yes went well before i had chance to try anything else well i was running my old lipos 2200 mah still 11.1 volts and lets say
i had sealed the boat well as when it opend and air got in there was small flames

(in reply to ryan_t888)

Post #: 4

RE: am i going to blow it up if i run this - 7/28/2008 2:29:30 AM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

Why would you use 2200mAh cells on a high amp motor? 5000mAh minimum, 10 000mAh recommended with 25C.

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to ormer)

Post #: 5

RE: am i going to blow it up if i run this - 7/28/2008 7:43:15 PM

ormer

Posts: 99
Joined: 6/9/2008
From: guernsey, UNITED KINGDOM
Status: offline

i was wondering if you had any idea on what motor you would suggest in this boat ryan as you said it is pretty amp hungry

(in reply to ryan_t888)

Post #: 6

RE: am i going to blow it up if i run this - 7/28/2008 8:03:14 PM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

NEU 1521 2D
6s LiPo 5000mAh 25C

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to ormer)

Post #: 7

RE: am i going to blow it up if i run this - 7/28/2008 8:49:15 PM

ormer

Posts: 99
Joined: 6/9/2008
From: guernsey, UNITED KINGDOM
Status: offline

where do i find these motors and i cant find that one in particular and they also look prety expencive

(in reply to ryan_t888)

Post #: 8

RE: am i going to blow it up if i run this - 7/28/2008 9:49:04 PM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

THey can be ordered off of the Castle Creations site. If you want a more cost effective motor run a KB 45 motor. I'd recommending a lower kv. This will drop current consumption at a cost of speed.

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to ormer)

Post #: 9

RE: am i going to blow it up if i run this - 7/29/2008 1:12:17 AM

j.m.

Posts: 2446
Joined: 9/20/2007
From: Raleigh, NC, USA
Status: offline

he already has a kb 45.

_____________________________

!Signature your in it put, this read to time the took you If
If the World didn''t suck, then we would just fall off.

(in reply to ryan_t888)

Post #: 10

RE: am i going to blow it up if i run this - 7/29/2008 1:38:13 AM

eboat

Posts: 163
Joined: 9/29/2006
From: Port Hope, ON, CANADA
Status: offline

Get the kb45 10XL (1200KV) if you want to use the 6S lipo set up
I am using this in a 36" hydro with a X450/3 blade prop (getting 53MPH so far)
I have a 200 amp esc but when I recharge the lipos I am only drawing around 80 amp average
You should start with a smaller prop when you have a V hull and work your way up as it will draw more amps than the hydro

Attachments

Click to see fullsize image.

Click for fullsize

< Message edited by eboat -- 7/29/2008 1:40:03 AM >

(in reply to j.m.)

Post #: 11

RE: am i going to blow it up if i run this - 7/29/2008 1:40:45 AM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

quote:

ORIGINAL: j.m.

he already has a kb 45.

I understand but it's not the most ideal wind for a mono.

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to j.m.)

Post #: 12

RE: am i going to blow it up if i run this - 7/29/2008 1:49:55 AM

j.m.

Posts: 2446
Joined: 9/20/2007
From: Raleigh, NC, USA
Status: offline

maybe a gear drive could fix his problem. It might be cheaper than a new motor.

_____________________________

!Signature your in it put, this read to time the took you If
If the World didn''t suck, then we would just fall off.

(in reply to ryan_t888)

Post #: 13

RE: am i going to blow it up if i run this - 7/29/2008 2:36:56 AM

ryan_t888

Posts: 4323
Joined: 7/24/2005
From: Hamilton, ON, CANADA
Status: offline

I wouldn't want to put this kind of power through gears. That would be a headache.

Ryan

_____________________________

A theory may be so rich in descriptive possibilities that it can be made to fit any data. - P.J.L.

(in reply to j.m.)

Post #: 14

Page: [1]

All Forums >> RC Boats >> Speed - Electric >> am i going to blow it up if i run this
Page: [1]

Jump to: