Technical, Techniques, Hints, and Tips > BRUSHLESS Motors and Speed Controllers

Brushless repacement for MFA 850 Torpedo

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jaymac:
Hi Canabus will bear that in mind thanks not used it for ages hopefully  at it again this year
Jay

Hotglove:
Hi Canabus, how does your 3648 setup run as far as temperature goes? I have seen several car ESCs that claim to be waterproof, which sounds a good idea. My current installation (no pun intended) includes an esc with cooling fan, which seems to work fine wth the MFA.
As I stated earlier, would prefer to avoid punching holes in the hull.
Also, as a novice to model boats, is there a simple way of setting up that allows the speed control to be restricted?
Thank you.

canabus:
Hi Hotglove
The 3648 only runs warm on 3S with a 2 blade 40mm prop, but, if you go to 4S cooling is required.
I use the Hobbyking car ESC's (hk45 to 100) as they have the electric fan on top and also small.
The boat ESC do not have an on/off switch like the car ones.
My mate is running the 3648 on 4S in his Spearfish,  but, I install a small computer fan over the motor with air scoops on the aft deck.
Works very well and goes like a bat out of hell !!!

Canabus

Hotglove:
First steps taken, I have ordered the Turnigy 3648 from Hobbyking, will be interesting to see how long it takes to arrive :-)
Not so sure about the ESC, I quite like the look of one from Hobbywing, it is waterproof and has reverse but rather expensive. Local hobby shops seem to have a good range of car ESCs so will probably buy from one of them.
Also bought a Great Planes motor mount which offers a lot of adjustment and will allow easy and precise motor swaps in future (it also looks like a proper piece of kit as opposed to the MFA piece of bent tin. The new setup should allow room for a free choice of coupling and much better alignment.
Hopefully, when all is up and running, the boat will have an engine room that lives up to the rest of her.

jaymac:
I use Hawk 50A without water cooling

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