Ep. 97 - Wiring Two Motors; Distraction & Progress

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On the surface, this video is about wiring up the second motor and controller. Really though, it's about making progress, even when you're distracted.
This video was edited on S/Y Zora!
Sailing Yacht Zora
* / sailingyachtzora
-=] Channels that have Helped Me;
* @ProjectBrupeg
* @OffGridGarageAustralia
* @AcornToArabella
* @BillCarlson
-=] Chapters
0:00 - A New Toy!
1:00 - The Plan and Size Comparison
2:59 - Paralleling Golden Motors over CANBus
4:12 - Sizing Bus Bars and Cables
8:26 - Breaking Down the Old Setup
10:50 - I Got Insurance!!
12:38 - Compatible Water Block?14:06 - Plans to Deal With Motor Directions14:53 - Wiring Up The Contactors
20:57 - Sorting Our The Main Controller Cables
28:36 - Planning For Redundancy
30:29 - Planning Cable Lengths
33:09 - Troubles Crimping Larger Cables
37:44 - Travel Plans and An Origin Story
41:42 - A Thought on Travel Videos
42:22 - Back To Crimping Troubles and Work-Arounds
46:52 - Cabling The Controllers, Mostly
48:33 - A Fuse Question, And Unknown Shmoo
49:57 - Finishing Up Cabling
56:25 - What's Next?

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Опубликовано:

6 июл 2024

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Комментарии : 45

@TheDigitalMermaid 2 дня назад

Hi all, I posted this just before starting a passage. I'll check and reply to comments when I get back to shore, which might be two or three days. Cheers all!

@KevIsOffGrid 2 дня назад

good to see you are on the water.

@nunziocabulliese7797 2 дня назад

hi..it's wonderful to follow your videos...thank you

@electrowizard2000 2 дня назад

@6:36 you use the nominal voltage and the maximum power to calculate the maximum current. I would suggest to use the minimum voltage and maximum power to calculate maximum current (sensitivity analysis) Imax=Pmax/Vmin. If you went down to 2.5V/cell * 16s that's 8367W/(2.5V*16)=209A (vs your 164A) and 332A (vs 259A). You could get even pickier and include the voltage drop through your cabling to estimate the true input voltage which would be even lower. I think your cutoff voltage is somewhere between the 2.5V and 3.2V values, so your current will similarly be between 259-332A.

@spinkey4842 2 дня назад

just ran across this video............... this is madness i tell ya..... madness!!! i love it

@MaxPivovarov День назад

Hello, I recommend using two belts, one for each motor, as this will increase reliability and provide a small redundancy in case one of the belts or the bearings of one of the motors fails. I also think that you can use one water block by mounting it between the controllers back to back. Precharge resistors can be connected through an additional relay, which will be activated before the contactors, which in turn will be activated after the capacitors are charged. This can easily be done using an analog circuit or with an Arduino. Or connect the contactor control switches after the contactors themselves, or even better, after the fuse. This will prevent accidental activation of the contactor before the capacitors are charged and will disconnect the contactor in case the fuse blows!

@GTrainRx7 День назад

Calling out the nerds... Fair call!

@mngbennett 2 дня назад

Mads on Sail Life showed that it is relatively easy to bend acrylic to make covers for electric components (like your bus bars) but try as I might I could not find the episode.

@denisebrooks4513 2 дня назад

I remember that. I can try to find the episode too.

@jimsvideos7201 2 дня назад

It's been a hell of a summer Maddie. I hope you see some progress and some serenity soon.

@loucinci3922 2 дня назад

Enjoyed the video. Thanks for sharing

@Flamytygwa 2 дня назад

I had to redo some heavy gauge wires in my truck and ran into the same problem using the same style of crimper, switching dies was annoying but produced a much nicer product than trying to do it in one go with the wrong one (which I wound up pulling out because it seemed good but then failed the pull test)

@blah666 2 дня назад

Thanks for sharing!

@jimsvideos7201 2 дня назад

I could make you some studs for the smaller controller that have two thread sizes to match your extant ring terminals if you like.

@scoutjonas Минуту назад

You could gear the motors differently to optimize in for driving and one for regen. I assume the regen should run faster.

@orlovsskibet 2 дня назад

Its amazing how insurance is so different compared to Denmark where I live. Here you don't have to hunt for insurance, you just get the best offer and click "Add to cart". Unless we are talking about very big expensive boats, there is no such thing as surveys. I've never come across a leisure craft surveyor in Denmark. When I swapped the diesel out for electric I gave them a call and told them that I had installed an electric drive and popped 12 kWh of LiFePo4 batteries into the boat, they just said: Cool - go sailing. Whenever I have had a claim, there has been zero discussion, they just pay up, and even more than I expected. Prices are much lower too. It doesn't have to be diffcult.

@casemodder89 День назад

they're prolly not too concerned about an electric fire hazard if you are on a boat and the person that got the ensurance at the same time. over here the policy of any contract states: contract ends with death. sooooooo......

@orlovsskibet День назад

@@casemodder89 ok don't know about that, but yeah

@hottractor1999 2 дня назад

Wow, those motor are big. So when is the calendar coming? :)

@davidabineri908 День назад

For those investing in crimpers, I would NOT recommend these high-priced hydaulic crimpers for the reason shown in this video.. I use the inexpensve one that just needs a couple of strikes with a hammer to crimp any sized lugs that Maddie is using.

@mikeydk 2 дня назад

Distractions??? No, side quests! :)

@willadams7922 День назад

I swear all large crimps are way larger than they need to be, sometimes I just stick a little piece of solid copper wire in to take up space and if I want a really nice crimp I start with the larger dies and then switch the dies down a size, one side at a time over several crimps to get a perfect ultra compressed crimp in the end regardless of how the wires fit at the start.

@jessicav2031 2 дня назад

Gosh those crimps sketch me out. I didn't realize there was such a difference between the metric sizes and the imperial ones, I guess I always got lucky with the size. Dunno, I have experience with smaller size crimps (like consumer electronics size) and absolutely anything you do wrong will make the connection unreliable over time. Use anything but the manufacturer tool, perfectly calibrated, and you see failures in a year or two with vibration. Maybe you should fill them with solder to be safe? I've actually never seen a soldered wire fracture, but crimps are about as dicky as the EPS tap to a bridge console.

@digihorse6730 День назад

Hi please check that the fuse holder internal fuse contacts and wire cannot poke out of the fuse holder once the fuse is removed. Possibility of exposed live tags. Easiest way to stop this is a small cable tie added to the wire once the fuse is fitted. Place it such that the wire can still move with the spring movement, but not expose itself out of the plastic holder or cap. I would always put the fuse after the switch, as Sod’s Law says you will need to change the fuse without being able to use the main isolator for some obscure reason, yet thought of. Also could you not mount the contractor close to the controller and use Buss Bar to connect them. Just a thought.

@HansQuistorff 2 дня назад

I would like to have 2 motors; one in the bow and one in the stern; have them be outboards so they could turn in any direction and out of the water when not in use. Front wheel drive and rear wheel regeneration.

@dc1544 2 дня назад

thermal compound between controller and cooling unit. helps even the heat and makes sure contact is made.

@KevIsOffGrid 2 дня назад

So why the need for the 5k - just use one half of the 10k, its even wired ready. Or am I missing something? I seem to recall the 5 was for efficiency not to get to 15 at max.

@erickvond6825 День назад

Actually the packing foam more reminds me of the Millennium Falcon. To answer any questions, no, I don't have a SiFy preference. I love all the neardyness... As for the switches, the DPDT switches (or as you call them the dual row switches) will offer a level of redundancy which can work in your favor in that they have two paths of conduction. When wired in parallel they can help insure good conduction which in boating is a consideration for when things have to work. I'm deeply sorry to hear about Tatters. I know what it's like to lose a furry friend. It's never easy and with the family issues you referred to I can imagine you're under a great deal of stress. Suffice it to say that you'll be in my prayers for the near future at very least.

@dennisbrok9335 2 дня назад

Theorie would conclude the closer to the load the better reason : you will get a voltage drop from every connection for sure in the contacter and lower voltage means more amps means more loss in the wire that’s why the starter motor contractor is on the motor

@akiraanderssonse 2 дня назад

I was out testing my 5kw motor and the motor gets hot long before the controller, but I have an air cooled motor. I have similar Kelly controller. I have a smaller boat than you, though my first tests 3knots 14A and 5knots 50A This is in fairly calm weather.

@will060785 2 дня назад

What are the dimensions (size and hole spacing) for your bus bars? I have 2 covers that I am not using that I can send to you :)

@dennisbrok9335 2 дня назад

Use a reamer to drill out the terminals

@davefuelling7955 2 дня назад

The 250 amp bus bars will be fine for what you're doing. They always have a safety factor when the rate electrical devices, generally it's around 10%, so a 250 amp bus bar will handle at least 275 amps without a problem.

@electrowizard2000 2 дня назад

You and I agree it would be fine, IMO the insurance company would not agree. And I doubt they would trust a software limitation either.

@JGnLAU8OAWF6 2 дня назад

@@electrowizard2000 install fuse then, surely they will trust a fuse.

@airgead5391 2 дня назад

If the stern of the boat goes to port in reverse you have a right hand (clockwise) turning propeller.

@thatraven6475 2 дня назад

Hey just wondering if you've thought of cheating when your on the boat by sandwiching both speed controllers back to back and only using the one waterblock? Not ideal but cheaper right?

@frejaresund3770 День назад

Passed my mind as well. Only downside would be layout overview.

@premitive1 2 дня назад

Rather than getting new wire, perhaps you could have made this wiring a little too long, so you could simply recrimp the already measured out runs?

@MarkRose1337 2 дня назад

Looks mostly like NCC-1701

@JGnLAU8OAWF6 2 дня назад

Did you really need heavy gauge wire for no load bench testing?

@frejaresund3770 День назад

No she doesn't. For no load, short term testing she could get away with shep extention cords. Only upside of using right size wires would be to calculate component consumption, and get a feel space needed for routing.