Brushless wildcat

[minikitty]

Bought a mini wildcat about 2 weeks ago, and now i wanna go brushless. What size brushless will i need to go 50mph +? I know its dual motors and it will need two brushless set ups. Also how do you think it will handle at 50mph

[forescott]

I would like to see a wildcat go 50mph. I think it would probably take flight at about 40! :unsure:

[minikitty]

well i wanna see it take flight. but being able to go 50mph. What kind of motors do i need

[forescott]

Something like a pair of feigao 380s in the 4000kv range. Look em up under brushless motors here on the ose site. Good luck with your build!:zip-up:

[FighterCat57]

I'm already on it. Have a thread going on it and a brushless setup on the way!

[minikitty]

Just a set of these motors? What esc would i use to power these?
http://www.offshoreelectrics.com/proddetail.php?prod=fei-380-S

[minikitty]

how about two of these?
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXUFF0&P=7

[FighterCat57]

Check out this thread; http://forums.offshoreelectrics.com/showthread.php?t=14585

And this one: http://forums.offshoreelectrics.com/showthread.php?t=14882

The motors are tiny, but there are two bolt patterns in the mount, less than 380 sized holes.
I'm starting with a 35-40 amp setup and if it's not enough, going up to 60amp. But battery life becomes an issue at that point.

Jeff Wohlt can make specialty couplers for whichever motor setup you choose. www.rcraceboat.com, just email him and ask.

The props are 1/8th.

[Make-a-Wake]

how about two of these?
http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXUFF0&P=7


Those motors would last about 10 seconds at 9000kv.................. As forescott mentioned 3500-4000kv on 2s would work alright. Something along these lines
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4196&Product_Name=HXT_2445_(370L)_3790kv_Brushless_Inru nner

Fightercat sniffed these out..............whole setup for $40......need two of course.
http://www.hobbyhot.com/swanghobby-marine-3600kv-brushless-motor-flyermate-atlantis-60-c-281-p-1-pr-2307.html

[minikitty]

Alright. what kind of ESC would I use to power the engines

[FighterCat57]

Alright. what kind of ESC would I use to power the engines

HK has a few 35-40 amp esc's. They need to be conformal coated or silicon sealed though. http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=6461&Product_Name=Hobbyking_SS_Series_35-40A_ESC

You can also add a water cooled heat sink instead of the one that comes with it. There's some floating around, ETTI makes them and OSE has them.

Whatever motor you choose, size the ESC above it's max amp rating and you should be OK.

[Alexgar]

I did a single brushless mini vee 28-47 2700kv 40 amp esc 3s and 4s on stock hardware. Durability becomes an issue quickly with this much power. Also the weight to power ratio get skewed quickly as it is hard to have something so fast and light keep in the water considering at 30 mph a ripple is a titlewave.About 300$ in to it im now looking for a 16-18" fg hull to tranplant my goodies.Probably a bby warzone jr since i have all the hardware from a brushed one i had many years ago

[sailr]

Everybody always wants to go faster. Remember, there is a point at which the boat becomes uncontrollable! What's the point!!!?

[minikitty]

HK has a few 35-40 amp esc's. They need to be conformal coated or silicon sealed though. http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=6461&Product_Name=Hobbyking_SS_Series_35-40A_ESC

You can also add a water cooled heat sink instead of the one that comes with it. There's some floating around, ETTI makes them and OSE has them.

Whatever motor you choose, size the ESC above it's max amp rating and you should be OK.

This esc you showed me has bad reviews of burning up. also how hard will it be to wire in two motors? Also what kind speed will i see from this set up you have shown me?

[minikitty]

also i'm probably not going to be running a lipo. just a custom built nimh battery pack

[minikitty]

also i'm probably not going to be running a lipo. just a custom built nimh battery pack

What about props?

[FighterCat57]

This esc you showed me has bad reviews of burning up. also how hard will it be to wire in two motors? Also what kind speed will i see from this set up you have shown me?

Aw dammit. Well... guess I'm not out that much munny... Shows me for not reading the reviews! (fortuantely I'm running it with much lower draw motors, so it might work)

[minikitty]

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9484&Product_Name=Mystery_20A_Brushless_Speed_Controlle r_(Blue_Series)

Will two of these work with these motors?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4196

[Alexgar]

this is what i run in my mini pricey but i prefer to be over rated than purchase twice

http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLA1040

[Alexgar]

maybe even this they are pretty small
http://www.horizonhobby.com/Products/Default.aspx?ProdID=EFLA1060

[Make-a-Wake]

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9484&Product_Name=Mystery_20A_Brushless_Speed_Controlle r_(Blue_Series)

Will two of these work with these motors?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4196


No, not enough amp capacity.

[FighterCat57]

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9484&Product_Name=Mystery_20A_Brushless_Speed_Controlle r_(Blue_Series)

Will two of these work with these motors?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=4196

This might work, but is pushing it; http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=9483&Product_Name=Mystery_30A_BEC_Brushless_Speed_Contr oller_(Blue_Series)

I'll let you know how the Hobbyking works out on 2s.

Mixed reviews, but price is right on this guy;
http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=6459&Product_Name=Hobbyking_SS_Series_40-50A_ESC

:Peace_Sign:

[6S HYDRO]

if you wont be using lipos you wont be getting even close to the speeds mentioned probably not even 30

[minikitty]

What about if i ran 11.1v? Or is lipo the only way to go with the brushless to get highspeeds out of it.

[Make-a-Wake]

What about if i ran 11.1v? Or is lipo the only way to go with the brushless to get highspeeds out of it.

Since you stated you would be running nimh, 11.1 or so would be 9 nimh cells............lots of weight!:crying:

[Alexgar]

and low discharge rate out of nimh

[FighterCat57]

I plan on using two of these in parallel.
http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=6540

[Make-a-Wake]

I plan on using two of these in parallel.
http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=6540


Great choice..............88 cont. amps!:thumbup:

[Alexgar]

this is the biggest i could jamb in the mini vee

http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=9272

[FighterCat57]

This esc you showed me has bad reviews of burning up. also how hard will it be to wire in two motors? Also what kind speed will i see from this set up you have shown me?

Yep, have to use it on 2s if the motor is above 2000kv. 2s/2900kv should be good to go. There's a note on the specs.

It will be here tomorrow, so should have an update within the week. =) :rockon2: