Rio EP brushless conversion HELP??????? plz

[aminoacid]

Ok. I have a stock Rio EP and want to convert brushless.
I have an ESC from the UL1 which is 60 amp water cooled.

my question is what size battery and motor can i use? the UL1 had 2x 2s 3200 mah setup in series 14+ volts.
Im a beginner modder and new to brushless. I have blackjack55 and shockwave 55 gas boats and nitro tmaxx and revo.

i'm thinking 2200kv from hobbyking with maybe 4s 5000mah single battery? not sure really what i should use considering the hull size and weight it can handle. I'll try to take out the left rudder and stick with one only if thats a good idea?

suggestions appreciated.

[Make-a-Wake]

If thats the 25 inch version you wont need much to speed it up quite a bit. I'd go with the two 2s batts you have on each side for easier CG adjusment, at 3200 mah they arent real heavy either.

This motor should be plenty with that boat and you can keep the prop small to lessen the torque roll effect:

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

or you can go with the 1500kv version and a bit bigger prop:

[lenny]

I have a Rio mod, And it runs on 2s and 3s, 3S gps at 32.5mph with a X440/3 s & b prop.
Runs pretty good, Look hears the video,http://forums.offshoreelectrics.com/...-Rio-Brushless

[JoeOvercoat]

Rio with ProBoat A3630-1500 on 6S

I don't have advice, but I can offer an example: see photos of my work in progress @ http://s985.photobucket.com/albums/a...in%20Rio%20EP/

The RCS Sickcess is to be vastly overpowered (with two water pickups: one stock & one thru-hull), and will retain both rudders for slow speed maneuverability. She will use the stock prop (or smaller!) to minimize torque roll.

Intent is to build an able rescue boat capable of towing many meters of floating rope & noodle to lasso & tow wayward racers to shore. Also have notions of running in the surf line of the Chesapeake Bay.

Retaining the water-tight box drove me from a 3S to 6S configuration, given my stockpile of 3S batts, the weight & balance tradeoffs, and my speculative concern about moving the center of gravity too far forward (starting with removal of the stock ESC from the box aft, and a ProBoat ESC that does not fit in its place). Throttle discipline will be required. I have high hopes the heavyweight solution will run well on the water...if it does porpoise it should get interesting, fast.

The ProBoat A3630-1500 Motor, the 36mm diameter 1500kv brushless motor, is the stock replacement Motor for the BlackJack 26 Brushless Catamaran from http://www.offshoreelectrics.com/pro...rod=dh-prb3310.

[aminoacid]

how would i couple for example a 5mm shafted motor to the stock drive cable?

[aminoacid]

i am having trouble figuring out what size motor is appropriate. the link you gave me in backordered. ... suggestions?

If thats the 25 inch version you wont need much to speed it up quite a bit. I'd go with the two 2s batts you have on each side for easier CG adjusment, at 3200 mah they arent real heavy either.

This motor should be plenty with that boat and you can keep the prop small to lessen the torque roll effect:

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

or you can go with the 1500kv version and a bit bigger prop:

[Make-a-Wake]

A 2858 to a 3660 will work........

This 380 9xl on 3s - http://www.offshoreelectrics.com/pro...380-xL&cat=116

This 12s on 3s - http://www.offshoreelectrics.com/pro...i-540S&cat=116

This for monster power on 4s, 13L version - http://www.offshoreelectrics.com/pro...i-540L&cat=116

[JoeOvercoat]

I bought a 5mm x 1/8 Collet (Item # 529B30) from KintecRacing, for $8 plus tax/shipping from the page @ http://www.kintecracing.com/Collets_Couplers.html.

There is some question as to whether one of the set screws grabs the flexible shaft in addition to the collet, or if it supposed to be collet-only. I think it is the former, but have not installed the coupler, nor asked Kintec Racing how to properly install the colletted coupler.

[lenny]

The coupler end with the set screw is for motor shaft only, Flex is held by coupler nut only.

[JoeOvercoat]

Just a thought: decide how you are going to mount the motor before you order anything. It is possible...likely, even... that you willl put several different motors/ESCs in your Rio over its lifetime...and any number of props...but probably only one motor mount.

For the right-sized motors recommended in this thread, you'll probably want to mount a motor mount in the boat.

I also suggest that you decide whether you are going to retain the water-tight box before you get far: the box limits your options, but is a robust solution to servo & receiver protection. I kept the box and put in a Traxxas watertight servo for good measure, and a bit better performance.

And lastly to go firstly, decide if you want to retain the dual rudders: a lot of brushless Rios run on one rudder just fine. If it is all about the speed, I'd think about one rudder. I kept the stock rudders for rescue/surf boat reasons. If you go with one rudder you can integrate the water pick-up in the rudder assy and remove the stock pickup [which is a tad close to the prop stream, seems to me]. I added an Octura thru-hull pickup as a consequnce of retaining the stock rudders...and not being impressed with the stock pickup's performance.

Every brushless Rio I have seen has taken a slightly/drastically different approach to mounting a motor mount, whereas my boat retains the original motor mount to minimize the chance that the motor action will crack the hull: I left the stock mount in for stress distribution, and modified the stock mount to fit the motor with water jacket. The motor sits very nicely in the tape I used to seal the mount, such that the strap will not have to carry all the load.

Retaining the stock motor mount led me to the ProBoat motor/water jacket combo as the best natural fit to the stock mount, and in turn to the corresponding ProBoat ESC. I would not have ordered the ProBoat ESC if I realized how heavy it was...but perhaps it will reward me with reliability.

And the size of that ProBoat ESC drove me to a layout that...well...where I had no choice but to go 6S for weight & balance & logistics. That's my story and I am sticking to it.

Craft wood spacers...between the strap and the mount...are in the works, with intent to shape them to fit the motor: you can get a glimpse of them in the photos @ http://s985.photobucket.com/albums/a...ProBoat%20ESC/

Rio stock mount mod for ProBoat motor photos start @ http://i985.photobucket.com/albums/a...P/DSCN3212.jpg

Rio strap mod for ProBoat cooling jacket photos @ http://s985.photobucket.com/albums/a...%20A3630-1500/

Octura thru-hull water pickup photos @ http://s985.photobucket.com/albums/a...In%20Rio%20EP/

[JoeOvercoat]

Thanks much Lenny!

To be clear, the coupler I bought has two set screws side-by-side, and I take it that both of those set screws are intended for the motor shaft, even though only one of them can fit into the flat on the motor shaft. The other set screw would go 'upshaft' of the flat, closer to the motor, I would expect.

529B30_5mm_x_one_eigth_Collet_fm_KintecRacing.jpg

Using only the only collet to grab the flexible shaft means the shaft is held at one point along its length, which would minimize whipping by allowing the shaft to flex instead of fighting it, perhaps.

[aminoacid]

I see the couplers.
Which motor do you think is best. I'm not looking for a mega speed boat, just a nice, fast, reliable boat, nothing thats gonna torque roll like crazy, overheat..etc.
MOTOR 1
MOTOR 2

[Make-a-Wake]

You dont need a 1000+ watt motor in a 25" plastic boat. The 3656 2600kv is a good choice.................its all of the power you will need..........it'll fly.

[JoeOvercoat]

Given your ESC is 60AMP (http://www.offshoreelectrics.com/pro...od=dh-aqum7011), if you plan to run 3S then that XK3665-2150KV Brushless Inrunner might be a good fit at about 54Amps for 11.1v.

You might want to run 25C+ lipos, as a minimum, for similar reasons, such that the ESC cannot outdraw the battery(ies).

A good ESC/motor/prop balance will give you even temps across the ESC & motor, with some margin on the ESC being the 'conservative' design.

[Make-a-Wake]

Given your ESC is 60AMP, if you plan to run 3S then that XK3665-2150KV Brushless Inrunner might be a good fit at about 54Amps for 11.1v.

You might want to run 25C+ lipos, as a minimum, for similar reasons, such that the ESC cannot outdraw the battery(ies).

A good ESC/motor/prop balance will give you even temps across the ESC & motor, with some margin on the ESC being the 'conservative' design.

There's no way i would ever recommend you run that motor with a 60a ESC.......................i'll step aside and let you and Joe figure it out..........................