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The Duchess

Started by woodie - paul
11 replies 23 likes Last activity: 6 years ago
#12

The Duchess

Hi woodie, l
A little diagram may help!
please note a car fuse holder will do,
The speed 600 will pull 85 Amperes when stalled (stops spinning due to weed or string) max efficiency is 12A so a 20 Amp fuse would be a reasonable choice.

Specification
Nominal voltage 7.2 V
Operating voltage range 3.6 … 8.4 V
No-load rpm 18200 min–1
No-load current drain 2 A
Current drain at max. efficiency 12 A
Current drain when stalled 85 A
Max. efficiency without gearbox 69 %
Length of case, excl. shaft 57 mm
Diameter 35.8 mm
Free shaft length 8.7 mm
Shaft diameter 3.17 mm
Weight 195 g

Hope this helps

Regards Roy
Regards Roy
Liked by Martin555 and RNinMunich
#11

The Duchess

Hi Woodie,
Are having a bit of difficulty figuring out the fuse thing.

The idea of the fuse is to prevent the wiring or other components from burning out.
So we normally fit a fuse in the wiring circuit.
I would normally have the positive wire coming from the Battery going to the main switch then passing through the fuse then on to the speed controller.

If you picture it as the boat has two circuits,
One is the radio control circuit
Two is the power that will make it all work.(Dirty)
The two circuits are linked,

I hope this helps.

Martin555.
If it looks right it probably is.
#9

The Duchess

Between the battery and ESC.
Try to keep the dirty wiring away from the clean.
Dirty wiring is considered the motor, Battery etc. Make sure you have the motor suppressed
Only old in years not mind or soul.
Liked by Martin555
#8

The Duchess

guys/gals - wheres the best place/wire to situate a safety fuse please?
id also heard its a good idea to keep one of these as far apart from each other as poss: esc or receiver away from battery or motor?
Liked by Martin555 and Ianh
#5

The Duchess

Welcome woodie-paul not sure you don't have skill the boat looks good to me.
Well done.
Rick
Liked by Martin555
#3

The Duchess

Hi Woodie,
Welcome, always like to hear of newcomers to this wonderful hobby. Don't be surprised if it becomes rather obsessive.
The Sea Commander is a good boat to own, whether it's your mother or yourself. It was one of the early boats that I built and after a couple of improvements she turned out to be a really nice boat. If anything she can go a bit too fast for me, but there. I'm an old fogey.

Cheers, Nerys
When the winds before the rain, soon you may make sail again, but when the rain's before the wind, tops'l sheets and halyards mind
Liked by Ianh and Colin H and
#2

The Duchess

Hi Woodie,
Again welcome.
So you have been bitten by the model making bug.
I am glad you find it interesting.
And looking at the photos you are doing a great job.
Just having a quick look at your setup i do not see a safety fuse.

Martin555.
If it looks right it probably is.
Liked by RNinMunich and Ianh and
#1

The Duchess

hello all and thanks for the warm welcome 😀
ive nearly finished my first boat, im not a skilled modeller like some of you guys but ive found i love 'doing up' neglected old models - began with this one bought just before the pandemic started to worry us all (ive 8 more now, im addicted 😛) its for my old mom, hoping to get them both out for its maiden voyage christmas day!
ive packed battery and servo with supportingly cut polystyrene jammed in tight - hoping for no fires! and although lipos and brushless are better i want to use what ive got - can anyone see any problems with my proposed set up please? and any good ideas for a flagpole for this lovely old sea commander?
Liked by Inkoust and Ianh and

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