and full size this time .
Not really Ian. A Watt is the measure of energy transfer over a unit of time. Remember the old electrical equation …..
HI Doug no i dont want to do that as yes the full size ships can get away with powerin one side engines more than the other to help the turn circle an i had this prob on my nimitz so a mate said fit in a mixer unit so as the ship turns the mixer unit will slow down one set of motors an speed up the other side motors automaticaly
HI John yes i see an heard Matron as her big new hat with the sailing ship on the top nearly took my eye out lol an as about 20 odd people were around the ship on the table she kept sayin well i think it needs an injection with bloomin great surrineges an needles Aaaaaaccchhh as she i think injected a poor member of the public as i see a guy limpin away hold in his bottom oh poor bugger lol an many thanks for the full size DOGS as yes i certainly eanrnt them on the day what with tryin to find out the probs ps an me lucks in with Matron URGH NO THANKS if it was that young model lady then great i would have took her on lol
URGH no thanks Rick i think i'll pass on Matron lol :rolling: :tongue-out3::thumb2:There you go Chris!! Looks like you've earned yerself a "promise" there, from Matron. If you play yer cards right, I'm told she can be very obliging!!
AN HI Ian thank you for your nice comments an yes near every ship real or model has some glitches to sort out when on the water for the first time an i have certaintly got them so now its all trail an error but regards motors jen came up with a good idea she said wait untill WINGS an WHEELS SHOW at the end of this month an i should be able to get some new motors up there x 4 an the good thing about that is i will be able to hold them in my hand an to mearsure the size of motor an voltage an shaft size so that they will line up with my prop shafts an yes there is a huge current draw as this ship is very heavy an just as well plenty of people up pond to help me lift her in an out of the water
WOW Tim you lost me on the first sentance lol but if what you are sayin is right no wonder ive go power an fuse probs an ive sent off for some 50 amp fuses an i may go the whole hog an order against my better judgement some 100amp fuses as this maybe dangerous but i can just try it as its just goin to be finding what amperage fuses will do the job an if not then any amperage in between Aaaaaccchhhhhhhh but with new motors fitted in i may not need all these high amperge fuses as in norfolk she sails well on 30amp fuses so in my opinion it them old motors that are faulty an are drawin far more power than needed but its all goin to be try it an see jobNot really Ian. A Watt is the measure of energy transfer over a unit of time. Remember the old electrical equation …..
Watts = Volts x Amps
For the same amount of energy transferred (Watts), Amperage (the rate at which electron flow is running through a system) goes up as voltage (the pressure allowing electrons to flow) goes down. The fuses’ job is to limit that rate because electron flow causes heat, and too much heat (electron flow) will damage the cabling.
For example, a 60 W bulb on a 240 V (UK) circuit needs to be protected by a 0.25 A fuse. The same bulb, on a 12 V circuit, needs 5 A fuse protection.
In Chris’ 12 V application a 40 A fuse is the equivalent of having a 2 A fuse on a household 240 V circuit. If a 40 A fuse was fitted into a UK residential 240 V electrical system, and the wiring was rated high enough, it could drive approximately a 10,000 W power application.
It’s a bit like an airbrush system. If you think of the wattage as the amount of paint moved, voltage as the compressor pressure, and the airbrush needle as the fuse in amps, lower pressure (volts) needs a bigger needle (amps) to move the same amount of paint (watts).
Well that woke me up LOL…..fifty year old physics knowledge coming creaking into daylight….
I think you are kinda going at it the wrong way there Chris……..if you just up the fuse you are potentially going to melt the cabling and damage other things on the circuit. The fuse is there to protect the cabling and stop items being given too much electricity.
Don’t ya just love it when greenies talk dirty!!!
Wow, for a moment I thought you were praising Matron in a 'bathing costume' Chris ... (and Congrats on the DB - very well deserved!)
Have you seen the stall current of those motors Tim? 85A I think!
HI Pete well got an answer the motor is sold but cheers for lookin for me
Remember it quite well. I used to be an installation electrician. But that was a lifetime ago. And there is a whole lot of difference between Electrician and Electronics Engineer. lol
What does Tiger weigh in at sailing weight Chris? Which motors do you have? Who big are the props? Big props need low speed and high torque.
HI Tim the voltage is 12v 12amp hr batt an ESC is rated at 320 amp an motor info is on the box in picture below an wirein is very heavy duty so i think ive covered your qeustions now can you give me an answer ?
HI Ian well im afraid you got that wrong sorry but there are 2 x 40amp fuses in the fuse box an that is one 40amp fuse for just 2 x motors an then again another 40 amp fuse for the back motors an they have not blown a fuse its just the graupner 600 speed motors that are causein the 40 amp fuse to blow an you have got me an how heavy tiger is but lets just say she is very heavy an prop size are 33mm x 4 how's that ?Remember it quite well. I used to be an installation electrician. But that was a lifetime ago. And there is a whole lot of difference between Electrician and Electronics Engineer. lol
But OK 40A sounds a lot but I guess over the 4 motors that is only 10A a piece... Maybe an single inline per motor could point to one defect motor and save Chris a few bobs.
But as you wrote we need the power table for the motors or just which motors they are would help. 261 pages is a lot to wade through to find the info...
What does Tiger weigh in at sailing weight Chris? Which motors do you have? Who big are the props? Big props need low speed and high torque.
HI Pete well 12v 12amp hr batt is the power an it goes through the fuse box an 40 amp fuse an then to a 320 AMP ESC then to the motors best i can exsplain it
Gives me more questions than answers really Chris. You seem to be running 8.4 volt motors on a 12 volt system? They will therefore be able to draw much more current than they are designed for and quickly take damage. Are you sure that isn’t the root of your problems? What is the spec of the back ones that work successfully?
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