Mo. Conservationist ?

[MoCarp]

So wrench how’s it feel to get slam dunked by the man?

[fishinwrench]

10 hours ago, MoCarp said:

So wrench how’s it feel to get slam dunked by the man?

I'll let you know if it ever happens to me.  

Electric outboards will be fun. I'm more than ready 👍 

They'll still hit things and bend/break shafts.  

Stopping an electric motor while underway will smoke the brushes and armatures, and pop relays.

Running at low voltages will glaze over the armature contacts and cause a permanent loss of power.  

Unlubricated bearings can only last so long.

Gearcase failures will continue to occur. Fishing line will still eat seals.   

My skin and lungs will be thrilled to eliminate fuel, carb cleaner, and exhaust fumes from my life.  

Required Special diagnostic equipment consists of a Voltmeter and Ammeter...... Already got it.😊 

I probably won't even need to buy hand cleaner anymore. Or at least not nearly as much of it. 

[Flysmallie]

2 hours ago, fishinwrench said:

Required Special diagnostic equipment consists of a Voltmeter and Ammeter...... Already got it.😊 

 

I am pro anything electric. But you know these "engineers" aren't going to make it that simple. 

[fishinwrench]

2 hours ago, Flysmallie said:

 

I am pro anything electric. But you know these "engineers" aren't going to make it that simple. 

I've been keeping abreast of it, and so far it's pretty basic.   Speed and output is controlled by pulsing the amperage varying degrees depending on the throttle setting.....no different than the "Maximizer" system on all post-1995 trolling motors. 

The problem they are trying to get past currently is the excessive wear on gearsets from the consistent pulsing of power through the driveshaft.   You don't notice it from the driver's seat....but that pinion gear sure notices it.  

Bombardier's design eliminates that by doing away with the 90° "gearcase".  Horizontal motor and shaft directly to the prop.....and reverse polarity for reverse.  

They'll get it figured out. 👍

[Devan S.]

I have zero knowledge of outboard manufacturing and how they are attempting to do their electric motors.

If they are having problems with power pulses in the driveshaft then it sounds like they are using permanent magnet machines. Even the best motor geometry still produces torque pulses opposing rotation as the magnets pass the stator. Causes havoc in downstream components.

The base motor designs will be fairly simple to troubleshoot likely 3 phase continuity check and if something is bad you change the whole package. Electronics packages should be fairly simple as they should be module based and you either have output or you don't and change it. 

The biggest concern I can/could see is the software basis. Much like farm equipment right to repair could come into play but probably wont.

At the end of the day......you will be able to do quiet a bit with a basic multimeter just to tell what failed but you wont get much troubleshooting past that(not that you necessarily need too).

 

 

[fishinwrench]

If you ever tinkered with slot-cars and slot car tracks when you were a kid.....then you have a basic grip on the concept.    The main difference is that with the slot car your thumb depressing the "throttle button" delivered varying amounts of steady current through the track.....and then through the motor in the car via "pickups" that slid along the contact strips on your side of the track.    

Instead of doing that same type of rheostat throttle, in order to extend battery charge life, the delivered amount of current stays constant regardless of throttle position.....and the degree of "output" is controlled by switching the power on/off multiple times per second depending on throttle setting.   Except (I assume) for WOT.....in which you will be feeding full ON current with no interruptions.   

[fshndoug]

Wrench can you fix my electric toothbrush?

[fishinwrench]

4 hours ago, fshndoug said:

Wrench can you fix my electric toothbrush?

I'd be glad to give it a try.   I've fixed a vibrator or two in the past.  😸

[snagged in outlet 3]

3 hours ago, fishinwrench said:

I'd be glad to give it a try.   I've fixed a vibrator or two in the past.  😸

A true testament to your sexual prowess.   Or should I say lack of. 😂

[Flysmallie]

11 hours ago, fishinwrench said:

Instead of doing that same type of rheostat throttle, in order to extend battery charge life, the delivered amount of current stays constant regardless of throttle position.....and the degree of "output" is controlled by switching the power on/off multiple times per second depending on throttle setting.   Except (I assume) for WOT.....in which you will be feeding full ON current with no interruptions.   

Ol Wrenchie has got it figured out!!

They do use control modules to extend battery life, or the amount of time it can run before it needs to be charged. But they also do it to control heat. Rheostats in this application would generate a lot of heat as well as drain the battery quickly. The control module gives it power at different frequencies that are controlled by input from another device. It would depend on the particular control module and the motor on whether or not it feeds full current at WOT. The motor probably would not require the full power you have available to reach it's max RPM. Pushing it beyond it's specs just creates meltdowns. I have a box of scrap motors and modules that prove my point. 😁