I am new and looking for help understanding brushless motors

[justski]

hi everyone i am new here and looking to pick someones brain but i am not sure if i am in the right spot ...i am building a 34" FighterCat Cheetah i want to run twin brushless motors what is a good motor looking to spend at least 300 or lil more for each motor and i want to build a kick ass boat the first time do i look for motors with high rpm with low voltage or high voltage lower rpm ... because i see motors that will turn just say like max 60.000rpm but the motors have like 7800rpm max60.000rpm but lower voltage then i see motors just say 1200rpm max 60.000rpm but high voltage what is better ..is there anyone that can help me in anyway ..Thanks Jim....................................

[Make-a-Wake]

This is the best place for you to "start", you will find many of your questions answered here, then we can help with the specifics. This is very good info.

http://www.rcuniverse.com/forum/m_9069147/tm.htm

[justski]

thank you very much ....ill do some reading and see if i can fig it out ...

[Make-a-Wake]

Be sure to come back with more "specific" questions as that link is great but it generalizes alot since there is no exact science.

[justski]

yes thank you i will ...like i said my biggest thing is fig out what i read i have add and sometimes understanding what i read sucks i can build anything if you look at my avatar its a pic of a bike i built 175hp 80 shot of N.O.S 110mph in 660ft i can build my reading and understanding what i read just sucks lol....but i know i can do it it will just take me a bit because this is new to me

[Make-a-Wake]

I was noticing your Avatar and wondering what that was............neat lookin rig!!

Keep your rpms in the 30-35,000 rpm zone for the motors.

[Make-a-Wake]

Hey Jim, thought I'd answer your pm here to keep others in the loop who may have input too.

Have you built/ran any RC boats before? I hope the link to the RC boat introduction helped.

Twins are a bit twitchy to set up at times. Firstly you need two ESC's, I would go with the Turnigy/Seaking 120a 2-6s model which can be found from $49 to $89. I would also recommend 4s to each motor. You will need two 4s 40c 5000 packs.

For motors I would recommend for a "kick-ass" setup as you had mentioned, the Leopard 4074 2000kv 4 polers. Steven sells them here and he backs his products very well..............you can buy with confidence!

He is currently offering free water cooling jackets for the motors too.

For stingers I would go with the Speedmaster 3/16 model, sold here as well...........make sure they will fit in the "footprint" area of the sponson. For props you will need one for each direction and I would recommend the x447 L + R rotation. You will also need two flexshafts, one for each direction............L + R. A waterproof Traxxas 2075 will do the job in the steering dept.......sold here too.

Props:
http://www.offshoreelectrics.com/pro...prod=oct-x447r
http://www.offshoreelectrics.com/pro...?prod=oct-x447

Motors(he has exactly 2 left)
http://www.offshoreelectrics.com/pro...o-4074&cat=148

Flexshafts(get the assembled version)
http://www.offshoreelectrics.com/pro...oct-oc150L-24c
http://www.offshoreelectrics.com/pro...oct-oc150R-24c

Stingers:research the footprint for room on your sponsons)
http://www.offshoreelectrics.com/pro...os-stinger-str

[justski]

Thank you very much for the info make a wake (sorry i don't know your real name) the only thing i might do dif it i was looking at http://fightercatracing.com/index.ph...&product_id=39 for the stingers i was told there a good set up and work good with the FighterCat Cheetah

[Make-a-Wake]

My name is Carl, and i would probably go with the FC stingers since they are "made" for it.............

The power setup I suggested should have that boat screaming along!

[justski]

cool thank you Carl ........i am a lil confused i really want a twin to play with but now i am told to go with a single there better what do i do? i know what i want but what is better i am not racing i am just playing....there is no one by me that races so it will just be me seeing how fast i can go ...lol.....what would you do

[dana]

If you have 300 per motor I would buy Neu motors.

[jamespl]

Unless your very skilled I would try a single first as I have found it can be very frustrating if your rc model won't do what you want it to do. Least if you have a single to use you can build a twin and still have a decent boat for kicks. Just my opinion.