Got a new proboat impulse 31 v2 need help

[waterproof]

Ok, then i will not change out my 2s battery for a 3s eighter, i will order a new prop first :) How mutch speed do you think i will get with Stock setup 4s with a better prop? i dont think my boat goes mutch more about 45-maximum 50km like it is today.

Tlandauer:Can you give me a link to a prop that i can order today? a prop that is bolt on to my boat to get littlebit more topspeed :)

I adjusted the knife blade backside the boat and i scratch the hull a bit with my adjusteble wrench when i screw on the nut to the knife blade. (i coulndt find my 7mm wrench so i used a bigger adjusteble)

What should i do here? take a look at the pics, should i take on carpaint or a epoxy type? Its seems to be only the paint that was scratched of but im not sure?
pics of marks.jpg

[tlandauer]

http://www.offshoreelectrics.com/pro...rod=octsb-m445
Unfortunately it is out of stock, here check out these CNC aluminum ones: http://www.offshoreelectrics.com/pro...+2+Blade+Props
It's getting late and I cant understand your picture, lol... If it is just the gel coat, you can put a drop of CA on it, then try to get some paint to match thr color.
As far as the prop goes, you don't want to go beyond 45mm dia. Anything between 42-45mm would work, but with the 45mm, make sure you check the temp under 2 min. first time, always be aware of your temp on motor,ESC and batteries.

[waterproof]

i have tried the 5s set-up
my thoughts where that the motor was not liking that : got hot rather quickly and run times are much shorter
it works ,but you have to prop down : a 40 mm 1.4 p is the max for a save set-up i think !

i bought a leopard 3674 1700Kv for 5s : perfect for this boat
speed is up (+/- 70 km/h, and nothing gets hot with a 40 mm 1.4P)
it can turn bigger props
like tlandauer is saying : cnc props are good ,just sharpen them a little bit

my english isn't good either ,live in europe

When i run on 2x2s 5200mh king max battery i get 14-15 minutes runtime.
The esc and motor are cold after 15min use.
I want to change out one of the battery so i got 5s setup.
How hot was your engine and how long do it run?
I cant spend more money to this hobby yet so a new battery will be the last upgrade for this month.

The factory and my local shop says it will be fine on 6s but i have reed that the 6s will burn the electroinic so that is not an option.
But 5s is still to much?

Can i get more power if i buy 2x2s that cost more then king max?

[iop65]

motor and connectors 55°C
lipo's 45°C
measured with infrared
time : +/-6 à7 minutes

when i used the leopard : faster and everything cool, run times about 10 minutes

would not use 6s ; your hardware is not going to like 40000rpm!

[iop65]

why not buy a 3674 sized motor with about 2000- 2200kv?
use it on 4s
goinig to be faster , cooler and cost probably less then a decent 3s lipo?

[waterproof]

motor and connectors 55°C
lipo's 45°C
measured with infrared
time : +/-6 à7 minutes

when i used the leopard : faster and everything cool, run times about 10 minutes

would not use 6s ; your hardware is not going to like 40000rpm!

How big was your batteries when you got only 6-7 minutes on 5s?

[waterproof]

why not buy a 3674 sized motor with about 2000- 2200kv?
use it on 4s
goinig to be faster , cooler and cost probably less then a decent 3s lipo?

That was a good idea. Is this the motor that came with the tfl boats?
Would you buy the 3674 or the leopard? Is the both motors bolt on to the impulse? Is the motor cable thick enough?

[iop65]

it was a single 5000 mah 5s nanotech ( converted the batterytray for it)

leopard has that kind of motors but there are others around there with the same specs

you can bolt it right in (25mm M3 ),perhaps have to shorten the motoraxle or flex (shaft of stock motor is shorter then leopard shaft)

[waterproof]

Ok i see, maby its more easy for me to just change out one of the 2s with a 3s so i get 5s setup.
I can get a 3s battery at good price.
It will be 1x2s 5200mh and 1x3s 5200mh so i think the runtime will be the same as you tried.
Is 54c temprature to much? What is the maximum of temprature to be safe that nothingwill be smoked?
Do you remember the speed you got with stock boat and 5s?

If the 5s is bad for the boat, then i not should buy it. This boat on 4s is not faster than a poor joysway with 50A esc and a factory setup that the factory says 45km. Its accelation is twice faster and its maby go 5km faster and the boat cost half of the price.
Im happy with the proboat impulse and the handling is nice, but i tought it should beet a joysway at half of the price :)

So i must go on 5s setup if thats ok or i must order another motor.
The box says 4-6s so i think they should not say it could run on 6s when many melt cable and burn the motor. But have anyone got problem with stock boat and 5s? How many rpm will it give?

[iop65]

stock motor + stock esc on 5s, but with a 42 mm 1.4P graupner carbon prop gave me 60 -62 km/h (gps)

never tried the stock 40.6 mm 1.6 p prop on 5s with stock motor

how easy do you want this hobby to be????
shortening the flex or shaft takes about 5 minutes!

[waterproof]

Ok, 62km with bigger prop on 5s, maby i got about 55km with stock prop on 5s.
55-60km is enough for me :)

I understand now, just cut of a littlebit to the flex because the leopard it a bit longer than the stock motor. That should be a easy job to do like you say :)

Since the leopard also could run on 5s, then i think i will run the boat with all stock setup with stock prop and 5s and maby change motor and prop later.

What is high temprature on this electric boats? is 54c temp high to the motor like you tryed or is the temp higher because of you changing to a bigger prop?

[iop65]

stock prop is 40.6 mm but 1.6P!!!
i don't think its going to be slower!!!

i would not go over 60°C

[waterproof]

Thats fine, do you think your boat been 55c on the motor on 5s because of the bigger prop you mounted?
If its ok to use 5s on stock boat with stock prop then i thinking to test it with 5s lipos and maby buy a bigger motor and esc to the Winter :)