<span style="font-size: large">Jump to the bottom of the thread to post 24because I've changed things around a bit and it's more up to date!</span>



So, I want to upgrade a Proboat Mini C to brushless but this is the first time that I will be doing this on my own andI have a few questions:

1)
Here are some components I was thinking of using, good/bad??:

Motor: I was thinking originally of the first motor here but thenI got to wondering if one of the other two higher kv motors i posted here would also work or if they would be too powerful?
http://www.hobbycity.com/hobbycity/s...hless_Inrunner

or
http://www.hobbycity.com/hobbycity/s...hless_Inrunner

or
http://www.hobbycity.com/hobbycity/s...hless_Inrunner


ESC:Which one I got would probably depend on the motor but how can you know if they will burn out or if they are safe.
http://www.hobbycity.com/hobbycity/s...ies_35-40A_ESC
The first problem I noticed with this one is in the description it says that it won't support anything over 2,000kv. How can you know if the other ESCs are the same way or if they are safe?
or

http://www.hobbycity.com/hobbycity/s...ies_40-50A_ESC

Battery:

http://www.hobbycity.com/hobbycity/s..._30C_Lipo_Pack

Would these work well together?

2)
Where can I get a jacket forthe esc and how would Iattach it?

If anyone can please help shed some light on these questions I would greatly appreciate it because I don't want to spend money on the components only to burn them out.

Thanks forany help


Edited on 10/5/09

Links broken...

Ok Ifixed them, thanks for pointing them out to me!

Questions updated to be more specific and bump

For the  motor: the first one is probably the best choice if you want to go 3S on the battery.
The battery is not ok... 1300 x 30C = 39A, to enough reserve. You should go for something around 2000mA 30C (60A).
An example of cooler would be:
http://www.offshoreelectrics.com/pro...044&amp;cat=75
But it is better to look for a seaking watercooled in 60A:
http://www.rcuniverse.com/magazine/n...roduct_id=3497
Very reliable!

Cornelp: That motor was my first choice anyhow Iwas only wondering about the others to get more speed but that probably would have been my choice anyhow.

One thing I'm afraid Idon't understand is "The battery is not ok... 1300 x 30C = 39A, to enough reserve. You should go for something around 2000mA 30C (60A)." Ido understand where you got the 39A from but Idon't understand what difference it makes on the setup.

Also, Iwas looking at the webpage for that 2700kv motor and it says that it requires a 25A ESC and the max load is 35A, so wouldn't a 2,000mA battery be too much (that is if i'm reading what you posted right)?

And wow, that's an expenive ESC. This wouldn't work it's alot less expensive but Iguess not as reliable.
http://www.hobbycity.com/hobbycity/s...ies_60-70A_ESC

This is all new to me so please bear with me, and thank you for helping.

If that hobbycity ESC isn't good I think I found the ESC you recommended here am I correct:
http://cgi.ebay.com/SEAKING-60A-Wate...d=p3286.c0.m14

Well, to calculate battery current, you multiply the stated mAh by the C rating. So your 1300mAh x 30C gives 3900mAh, or 39A. If your motor needs 40A (yes, I was wrong, I wanted to recommend the LAST one...), you usually go for at least 10% extra, if not 20, so 40+20%=48A minimum for ESC and battery. The wise choice is 10% extra on ESC and another 10 on top for the battery... so 44A ESC with 48A battery. At 30C, the battery has to be minimum 1600mAh.
The ESC you point out is very good, but still needs a watercooler. So either buy one from the net, there are various models available, or build one.
For instructions, see
http://www.offshoreelectrics.com/inf...olingplate.php
It is very easy to do. I make my own coolers, with copper sheet and brass tubing:
http://forums.offshoreelectrics.com/...p;postcount=40

Ok so from what I understand, These should be what I want:

Motor:
http://www.hobbycity.com/hobbycity/s...hless_Inrunner

ESC:
http://www.hobbycity.com/hobbycity/s...ies_60-70A_ESC

And the battery I'm still not sure on since it says the max amperage for that motor is 40A I'm guessing perhaps still this one:
http://www.hobbycity.com/hobbycity/s..._30C_Lipo_Pack
1300 x 30C =39A?

If, hopefully, I am right so far with these parts I was wondering what difference the C number makes on the setup. I get that 1300mA at 10C means that 13A is the max the battery can put out and 1300mA at 30C is 39A, but what does it all mean with reguards to a motor and ESC?

Does it mean that that is the max amperage that can be drawn without overheating or that is the max that will be provide, Etc?

Oh, and will this motor still allow me to control the Mini C? It will be faster than the 2700kv motorfrom what Iunderstand and I just wanted to make sure it will still be controllable.

Thanks for your help I am getting this as we are talking.

I've been looking around and discovered the aquacraft Rio Ep and got to thinking what if I just put the motor and esc I have listed above into this with everything else stock?

Would this make it really fast and be compatible with the components?

P.S. I'm still not sure which battery would be required for this setup since it's not much difference than what I was talking about earlier with the Mini C

The C rating is the "discharge rate". Your 1300 30C means you can only draw 39A continuous with a 10sec peak of 40C. If you want to go faster (full throttle) your ESC might stop functioning or you might overheat the batteries (not nice with lipos). I had this problem and I ended up buying new batteries... Plus your runtime will go from 6-8min to much less.
trust me on this: with a 3-5$ difference, get the
http://www.hobbycity.com/hobbycity/s..._30C_Lipo_Pack

You can leave the hardware stock for now, but you WILL want to go faster... so start looking for a better prop.

PS: it is not only the kv of the motor that will make it go faster, but the higher torque. This way you know that the motor will actually get to these rpm's.

SO, if you get a higher mAh battery it won't hurt the ESC? Is it possible to get an even higher mAh battery without hurting anything in the boat?

I guess what I'm trying to get at is for each of these 2 boats I'm considering, the Mini C and the Rio EP, whichever one Ichoose I want to be able to upgrade it to go FAST but controllable. I just need to know what to buy that is safe and reliable.

Obviously, I'm having some trouble understanding how to put everything together but Ikeep asking because Idon't want to burn anything out because Ichose something wrong, so Ireally appreciate you taking time to explain this to me.

So,How about this:
If I lay out my thoughts could you correct each item Iput out if it is no good with something that is better, and explain why it's better, keeping in mind I want speed and control (who doesn't ).

<u>Pro Boat Mini C-
</u>
Motor-
http://www.hobbycity.com/hobbycity/s...ies_60-70A_ESC

ESC-
http://www.hobbycity.com/hobbycity/s...ies_60-70A_ESC

Battery- Is this battery still good because Iswitched to a 2700kv motor since thisboat is so small.
http://www.hobbycity.com/hobbycity/s..._30C_Lipo_Pack



<u>Aquacraft Rio EP

</u>Motor- Will this help the boat go fast or is a higher KV needed?
http://www.hobbycity.com/hobbycity/s...hless_Inrunner

ESC-
http://www.hobbycity.com/hobbycity/s...ies_60-70A_ESC

Battery-
http://www.hobbycity.com/hobbycity/s..._30C_Lipo_Pack


Thank you so much for your time.</p>

Talking about the Mini C. The Rio is much bigger, so for that you would need a slightly bigger motor.
A higher mAh will make you and the ESC happier... you for longer runtimes, the ESC because you have more power reserve.
Just an example: on a 600mm mono, I have a Feigao 14S (46A), with a 60A ESC and a 3S 4200 20C battery... and they lived happily ever after...

This all just runs together since it's my first time but that's why I'm trying to ask piece by piece why things work and why they don't.

Ok so I keep discovering new things and I keep getting more and more frustrated!!! I really need help with my post that shows the layout of each boat and my new question:

I noticed that the ESC that I choose initially does not have a BEC, which as far as I am understanding means that my receiver won't be powered unless I get an ESC that does have a BEC included. But how am I going to know if the BEC can power my specific receiver? i.e the stock in the Rio EP or if I do the Mini C then my Eurgle receiver.

Can someone please help and make suggestions on my parts list on post #12 and maybe suggest and new less expensive ESC since all the higher amp one's by hobbycity seem to not have BEC included.

PLEASE I'm getting so frustrated trying to figure all this out. Mainly because I just want to know what to buy when the time comes that won't destroy my boat or my friends who is also building a boat with me.

I just found this ESC on hobbycity since none of the other hobbycity brand one's that will work with my motors I've chosen have BEC this one might be an option:
http://www.hobbycity.com/hobbycity/s...r_(Blue_Series)

Just adding onto my other comment

Ok Just about anyone who has posted about upgrading a mini c to brushless needs to see this vid that another guy did that shows exactly what he did to his mini c. It will give you an idea as to the space or lack thereof that you are dealing with. [link]http://www.rcuvideos.com/video/How-to-convert-Your-Proboat-Min[/link]
The Rio Ep is fairly new so not much known yet, other than as cornelp said it is bigger so would be able to maybe not be too much concerned with spacing. Good luck which ever way you go.

This is an ESC I also use, watercooled, and it is quite ok... and very cheap:
http://www.himodel.com/electric/HiMo...-70A_OPTO.html
BUT you need an external BEC:
http://www.hobbycity.com/hobbycity/s...oise_Reduction
Can you post some pics of the boat? Especially insides... damfurst got me worried about space...

I actually have seen that video, it is quite helpful, in fact It answered most of my questions but all I'm really lacking is a suitable ESC to pair with the motor I've choosen that isn't too expensive and preferably has BEC included. I can use the one cornelp suggested if I can't find another good but cheap one that has BEC included.

I don't actually have the boat yet, as I'm waiting to see if I win it since I'm bidding on one on ebay. If I don't win then I was considering perhaps the Rio EP but as you said it's newer but I figured it had to be close to other boats out there of similar size since all I would want to replace wouldbe the ESC and Motor and batterys.

I found this on eBay, it seems to fit the bill but I imagine there is no way to tell if it is any good:
http://cgi.ebay.com/50A-Waterproof-B...d=p3286.c0.m14

I've been asking around, but nobody seems to know anything about this ESC...
You could also try:
http://cgi.ebay.com/Rc-Boat-Waterpro...d=p3286.c0.m14
or other Himodel... at least these were tested...

I was looking at the ESC you posted on ebay but it shows only 2 wires going to the motor, isn't that a brushed hookup?

Sorry, just the hurry... there is a similar one for brushless. Will look for it when I get home...

Based on the general type of the Aquacraft Rio EP would this motor be too much:

http://www.hobbycity.com/hobbycity/s...ess_Motor_(FIN)

Run on 11.1V Lipos.</p>

The motor itself is a good one, but the rpm on 3S is a bit high... 53800rpm is a bit off the charts, for normal size hulls. For the EP, probably a better option would be:
http://www.hobbycity.com/hobbycity/s...hless_Inrunner
Plenty of torque and 38850rpm, much better.