Krille

Need some help with the setup to my iceberg.

Im gone run with this bl motor.
Model:B2045-8T
Voltage Range: 11.1V
No Load Current(A):1.4
Kv(Rpm/V):3745
Dimension:Φ28×45
Weight(g):135g
Shaft diameter:Φ3.175 mm
Max Efficiency:83%
Max Efficiency Current(A):28
Max Load Current (A/60S):38
Max Power:270 W/60S
Resistance: 0.027 Ω

Im thinking of running with 3cell 3400mAh Li-Po, does that sound good? Or do you think 2cell is bether?

Is a 40A ESC enough?

What prop size?

Krille

No one knows something?

BB Modss

2 x 2s1p 2200 packs in parallel on a decent 70amp water cooled esc would let you run about a 30mm prop and go decently fast. the esc can be found on fleabay, motor you have chosen is good.

Krille

Why 2x 2s1p 2200 in parallel instead of 2x 3s1p 1700 parallel? the 3s got more V and will lower the A a little. So i think the runningtime and weight would be about the same. Or do you know something i dont?

BB Modss

more voltage on a high KV motor will certainly not lower your average running amperage, it will make it run more current. to get the effects of lower amperage draw you need a HV setup, like a 1000kv motor on 8s worth of lipos. Check unitedhobbies for a good motor/esc combo, there zippy lipos are not bad.

Krille

Ah ok.

Then im gone have the same motor as before. a 70A ESC and 2x2200 7,4V lipo

BB Modss

Id buy the ebay pulsar watercooled 100 amp, this way when you get a bigger fe boat you have a good esc on hand.

joccee

I think the boat is a bit small for a 100A...it will be heavy with 4400mah and that esc, but thats just my own opinion.

BB Modss

the esc adds a few grams to the boat, you can get 2200mah 2s lipos that are fairly small. you could use A123 cells for big bang and low weight. or use some good IB1400 2/3a cells.

Krille

I dont need a 100A ESC for a bigger boat later. If im gone run big boat i prefer my nitro or gas boats

joccee

like I siad, thats my own opinion...actually the pulso is as light as my 60A esc and its watercooled[X(] pretty nice so I guess I was wrong
I

alloutcustom

Try 2S2P 3600 two 1800mah lipos in parrallel to keep the weight down a bit, then a 50A should do it but 70A would be better insurance

Krille

Im gone have 7,4V and 1800mAh, or 2200 have not decide me yet. But still about 5 mounth left before i can drive the boat

joccee

why 5 months?? there is no ice in sweden yet...n probably wont be at all this year..

Krille

I dont know where in sweden you live but at home we got ice, thick enough to drive snowmobile on, and the car ice ways usualy (instead of ferry) opens in jan/feb some time.
The ice usualy starts to melt in about april/may, but the water usualy not rice to a good high for about middle > end of may.

But i can drive the boat here down at halmstad (where i study) bot i got no boat here if its hapening something.