Good morning Dave - thanks for getting back to me and sorry for not being clear. The motor Is a Caldercraft 750s which Is supplied as part of the Aerokits Sea Commander kit. On the motor housing Is CEM750S and the code S-2191AE134. The model kits are manufactured by Jotika as you are probably aware and their recommendation Is 7.2v nicad or 12v6ah lead acid using the supplied two blade 40mm plastic prop. I emailed the company who supplied the kit re. esc and power source to be told that their recommendation would be Viper 25amp with either 11.1v lipo or 8.4v nimh. Quite contrary to the manufacturer I think ! In coming back to rc boats after many years I had purchased the particular kit partly because It came Including matched motor, shaft, prop etc. Nice and straightforward with no confusion ? Ok - my main concern Is the 15amp esc. should I send It back In favour of a 25 or 30amp ? Thanks Dave, Keith. ps the motor spec Is -- Nominal v 12 Range 6 - 12 Max rpm at 12 - 18,800 No load 2.6 amp Current at 12v - 12.78 Stall 92.08 amp Is this near the limits of a 15amp esc ? K.
HI guys - just received the new 15A Electronize esc. I still have to get the battery pack and am thinking 8.4 V 3800AH. Nimh. How will this set up work. I'm not well up In electronics. My spec Is ... Aerokits Sea Commander with supplied 750 12v motor and 40mm 2 blade prop. Should I have gone for a higher amp esc ? Would you expect the model to plane and how long should It run on a charge ? I had originally Intended to use 12v lead acid but hull space Is a bit too restricted and It Is probably too heavy anyway. Thank you, Keith.
Thanks Dave - looks like you were correct about the mosfet (about which I know nothing) but I gave the damaged esc to a friend of a friend etc. and he Is repairing. In the meantime I just ordered a new 15amp Electronize unit and will use the repaired one In the next build. Thanks for all the contributions. Regards, Keith.
No Dave my esc does not have bec and Is powered by 4 AA's. Motor and prop shaft are free but, on carefully reading your reply, I am concerned that I may have stupidly reversed polarity when connecting esc to rx this morning - further Investigation underway In the shed this evening ! Many thanks, Keith.
Thanks Dave - that clarifies things nicely. I got It to work on the bench today but then It stopped. I did some checks but no go ! The back of the esc was quite hot - Too much so for my liking. I have had the esc for 12 years but It was never out of the box so It should be ok. I am using the Caldercraft 750s motor supplied and a 12v 7amp lead acid battery to set It up. I hope I haven't cooked something ! Thanks for the Interest. Keith.
Hello all - I have just re kindled an old Interest In RC boats and have an Aerokit Sea Commander at the electrics stage. I have a two ch. Futaba controller and a Electronize 43HX esc. The thin red, black & white leads from the esc connect to channel 2 of the Futaba receiver. How do I know which of the three pins to connect the three coloured leads to as they are not pre fitted with a correct polarity plugin ( like the plugs already fitted to the servo unit) ? Many thanks, Keith.