My Random Eco(no)-Related Things Thread

[Stubby79]

Finished:


Adjusted:


Installed:


Complete:

[Stubby79]

Motors!

Tested them to figure out the RPM/V...cuz it's pretty much a waste of time trying to design anything using them without knowing.











And, on a different note...my 3000w brushless controller showed up. It's a beast! (1500w controller next to it, for scale)

[Stubby79]

I was trying to figure out what the tank and seat were off of on the motorcycle frame...couldn't figure it out for the life of me...until someone posted a used '84 CM250 and I recognized the tank!

Well, now I know.

But why did they fit so well? They're two very different machines...

It became obvious when I pulled it in to my shop (better light) and started pulling unnecessary parts off...

For the tank rubber mounts:


And the seat/rear tank bolt:


I wouldn't have noticed the rough weld on the seat mount, if I wasn't looking for it after finding the janky - but effective - bolts welded for the tank's rubber mounts.

Someone was already on their way to making this thing in to a street cruiser.

[Stubby79]

Well, that was interesting.

Just drove my first hybrid a few minutes ago. 2010 Prius...wow.

...just...wow...

Not a fair example to make any kind of judgement on Prius'...ex-taxi, unknown miles...looked good from a distance, and in the photos, but...well, I wasn't expecting much, when the next cheapest one for sale was 2.5x the price, but I kept my fingers crossed that it would be a good runner. I can fix everything else.

It wasn't. Poor thing. Couldn't get out of it's own way when I got a chance to floor it. Which is sad, considering I've seen some Prius' leave everyone else behind when the light goes green.

Almost flat tire, broken window, questionable mileage, filthy engine, non-existent history, not even insured...the first and last stopped me taking it on the highway (and should have stopped me trying it at all, but I like to live on the edge when I get a chance...).

I couldn't see well out the windshield...that, really, was the deal breaker. Though I might have put up with it if it ran as good as it looked in the pictures.

On the good side, I loved the engine turning itself off...I was stuck in traffic, I hate that my engine in my cars are just sitting there pissing away gas so that I'm ready to move 5 feet at a time.

And it supposedly has a rebuilt battery. No documentation, mind you.

I've had enough cars I can't see stop lights because I'm too tall for the windshield...I'll try a Leaf next. When I see one that's a steal. Which won't happen, unless it's been in an accident, or I luck out and am first in line at an estate sale...

Oh, and my little 290k Echo felt sooooo peppy after that. Perspective...made me love the little thing all over again.

[Piotrsko]

The half full tire should have been enough to set it into traction control mode, not familiar with these to further diagnose acceleration issues.

[Stubby79]

Ooops. Found a 120v, 150a, 9000w controller on Aliexpress on sale for $200, with free shipping.

Dug around for a good hour looking for the 15000w version, but it was more than twice the price, plus stupid shipping.

So I pulled the trigger on the 9kw one for $200. I'm...stunned. (Something is bound to go wrong, like the free shipping was a mistake or something).

They also have 3000w 96v sinusoidal controllers for under $100 with cheap shipping. You 'mericans can probably find them cheaper. But if anyone is in the market, I can post links. Sale is on for another 3 days, I think.

[MetroMPG]

Admin note: Stubby's 2000 Honda Insight project now lives in its own thread...


Thread: The Impsight: My mischievous little devil of a car. ('00 Insight fixing and modifying)

[Stubby79]

It arrived!

It's huge!



And has cables that might actually be up to the task!



I'll test it out in a couple of days to make sure it works.

Then I'll open it up and check out the components.

Can't right now. Made the mistake of washing a memory foam mattress topper. It's been drying in my shop - completely clogging it up in there - for a week now. When I make bad decisions, they tend to be over the top.

Should be able to sleep on it today. Yay! My poor back.

[Piotrsko]

Well it has 5 screws on this cover so maybe it has 5 50 amp mosfets?

I say that because I have found 400 v rated mosfets for $1 usd are pretty common.

[Stubby79]

No, the 5 screws hold the big heat sink inside to the case, and presumably transfer heat to it.

It has - or should - 24 x IRFP4568 mosfets in it. Supposedly capable of 171 amps each (though I think that would melt the leads right off them after a few seconds). Will confirm that after checking that it works.

You need 6 sets of mosfets in a 3-phase BLDC controller...a high and a low side for each phase...I think...anyway, 4 on each, it's rated at 150 amps peak...but each phase can be ~2.5x the battery current, so...375, divided by 4...each taking 93.75 amps each, though only when you go full throttle but before battery voltage and phase voltage level out...BLA BLA BLA. That's about half what each is rated for, so that sounds about right.

Awful lot of current to pass through the poor little suckers.