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[ColinB]

Hi,
My Notts Forest (sic) had her maiden voyage yesterday. She is really the Nordkap re-decorated.  Generally went OK, but I have a couple of concerns that I hope someone can advise on:


I have a Monoperm 6v 3A motor and the prop that came with the kit, but with the large amount of ballast needed she moves very slowly.


Also the Quikrun 1060 does not always read the reverse command.


It is all powered by 5 x 1,2v 2100mAh


Cheers

[NickelBelter]

The ballast isn't slowing her down, either the motor's RPM per volt is too low, or the motor is too weak and bogging down while trying to swing the prop.  This is assuming, of course, that you have a realistic idea of speed for a model trawler (just above walking speed should be fine for max throttle)

[ColinB]

The ballast isn't slowing her down, either the motor's RPM per volt is too low, or the motor is too weak and bogging down while trying to swing the prop.  This is assuming, of course, that you have a realistic idea of speed for a model trawler (just above walking speed should be fine for max throttle)

Thanks Nick, she is deffo moving slower than walking speed.
There must be over 2kg of ballast in her, whereas my krabbenkutter has maybe 100g and I only run her at half throttle for realistic speed on a 4.5v motor.

[tonyH]

Can you check how much current she's using? If she's only drawing 1amp while running, for example, then it would seem that the prop's too small. The current will be at it's max on "take-off". It certainly looks small on the Billing pics . Try a slightly larger prop and accelerate GENTLY

[ColinB]

Thanks Tony 

[Hande]

She is beautiful! Good job!
Billings certainly didn't pay any serious attention to the props of my Neddie that has Kort funnels. Are your's made of plastic, too? I doubt that the angles of the blades are correct... (I don't know the English term - sorry!)
Although I didn't experience your challenge, I bought realistic Kort props, which were quite a bit larger when sized to the funnels. (I have over-sized motors, to be sure. So I have to slow her down for realistic speed.). Sorry about not being of any help 

[ColinB]

Hi Hande,
Many thanks. Yes I suppose maybe the prop for Billings was just decorative. I will look for a proper one which is larger.


Cheers


Colin

[canabus]

Mine has a 40mm 3blade brass prop, same ESC, 2S Lipo battery and a 540 80 turn motor.


Canabus

[ColinB]

Thanks mate, the supplied prop is 40mm dia and nylon.


How much of a difference would a 40mm brass prop make over nylon?

[NickelBelter]

After some investigation, it seems a Monoperm turns about 5000rpm on 6v.  Can you try a 3S battery instead of the 2S?  That might provide a bit of extra oomph

[ColinB]

   Thanks mate.
I invested in a larger brass prop but am yet to test it.

[wbeedie]

She is beautiful! Good job!
Billings certainly didn't pay any serious attention to the props of my Neddie that has Kort funnels. Are your's made of plastic, too? I doubt that the angles of the blades are correct... (I don't know the English term - sorry!)
Although I didn't experience your challenge, I bought realistic Kort props, which were quite a bit larger when sized to the funnels. (I have over-sized motors, to be sure. So I have to slow her down for realistic speed.). Sorry about not being of any help 

@Hande the angle of the prop blades is called the pitch, useless bit of info but handy if yeo ever have to ask again

[wbeedie]

Thanks mate, the supplied prop is 40mm dia and nylon.


How much of a difference would a 40mm brass prop make over nylon?

The nylon might have a bit of flex which might not get you optimum thrust, where the brass will not bend or flex under strain so should improve things