which motor?

[iceman]

i have narrowed my choice of motor down to two...the leopard 4074 2200kv or the keda 4074 2364kv. which one is the best choice for my 24 in. rigger? boat should be just a hair over 3lbs. thanks for all the help.

GARY

[wilsta67]

what about a cc1515 2200kv - 2650kv

http://www.ebay.com.au/itm/Castle-Creations-1515-1Y-1-8-Brushless-Motor-2650kV-/230646972321?pt=Radio_Control_Parts_Accessories&hash=item35b3a17fa1#ht_2032wt_954

http://www.ebay.com.au/itm/Castle-Creation-Mamba-Monster-2650kv-Brushless-Motor-/370539768844?pt=Radio_Control_Parts_Accessories&hash=item5645e42c0c#ht_3096wt_1032

http://www.offshoreelectrics.com/pro...ham-castle1515

http://www.ebay.com.au/itm/Castle-Creations-2200kV-Rotor-Replacement-Kit-/360376465621?pt=Radio_Control_Parts_Accessories&hash=item53e81c78d5

[iceman]

Wilsta, that motor is too rich for me. im a poor country boy

[wilsta67]

there not that much dearer if you look in the rite place
what's a leopard motor cost?

also what battery packs and esc you plan too run???

[iceman]

the Leopard is 95.00. running 4s.30c not sure what esc to use yet

[wilsta67]

the Leopard is 95.00. running 4s.30c not sure what esc to use yet

both those motors will be fine on those packs but you will need at least 180amp esc the turnigy or seaking are well known

http://www.hobbyking.com/hobbyking/s..._Boat_ESC.html

http://www.offshoreelectrics.com/pro...er-seaking-180

or there is these 200amp i havent had anything to do with this type but it should be ok


http://www.offshoreelectrics.com/pro...ef-sword-200lv

http://www.hobbyking.com/hobbyking/s..._200A_ESC.html

[Chilli]

What is the height and width of your tub?? The gear you guys are talking about would probably be more suited to a 30+ inch rigger.

[martin]

I also think a 4074 motor is to much for a 24" rigger.

[siberianhusky]

Wow I was thinking about converting my 24" JAE 12 to electric, was planning 2s and a 28 mm diameter motor. I'm having an interesting time trying to get stuff laid out while getting the CG right, How are you doing it with you're rigger?
IMO that's about twice the motor you need for a rigger that small. The 4s may also not be a good idea depending on the size of the cells you can fit in there. be very short runtimes, also need to be sure what packs you choose can supply the current a 4074 will draw.
Most people running motors of that size are running two 4s2p 8 - 10000mah setups.
The JAE 21 rigger is quite a bit bigger than yours and is very fast on spec 36mm motors, and is able to utilize a single 5000mah pack.
Not saying bit can't be done if the boat was designed for it from the start, but most riggers of that size are running 2s setups.

[wilsta67]

hehe know that old saying, "go big or go home"

[Chilli]

Well if you ever build a similar set up William, post some pics and let us know how it turns out.

[Boaterguy]

both those motors will be fine on those packs but you will need at least 180amp esc the turnigy or seaking are well known

http://www.hobbyking.com/hobbyking/s..._Boat_ESC.html

http://www.offshoreelectrics.com/pro...er-seaking-180

or there is these 200amp i havent had anything to do with this type but it should be ok


http://www.offshoreelectrics.com/pro...ef-sword-200lv

http://www.hobbyking.com/hobbyking/s..._200A_ESC.html

those SS's are paperweights at best, blew three of them drawing 150A or so for a 45 second run

[iceman]

The tub is 2 1/2 tall, 3 1/2 wide,and 24 long. ...sponsons are 1 3/4 wide by 10 1/2 long.......there are two rear sponsons that are 3/4 high by 3 in. long
maybe this will help. i want this to run in the 55 to 60 range

GARY

[martin]

Ive got a 17" JAE mini sprint that runs mid 50s mph with a $12 450 outrunner motor on 3s, A 540 size motor on 4s in a 20" boat should get you 55-60 quite easily.

[siberianhusky]

I just set a Castle 1512 in my 24" rigger and a pair of 2s packs to simulate a 4s pack and well good luck with that! And the 4074 is a much bigger motor.
Pretty much taking a sledge hammer to a finishing nail here. A UL-1 motor would over power that size a rigger and do it with a 60$ esc! Give you good 4+ minute runs with a 5000mah 35c pack. Thats actually exactly what you're supposed to run in a JAE21fe and it'll easily do 55.
All this is assuming the design of the boat is actually capable of handling even spec power, what plans did you use? Some of the older designs are not the best with modern lipo batteries and brushless motors. They usually need a few changes to the angles in the sponsons.