SIA155-48 Hairpin Motor

[Moonshot]

Here's the motor:

https://www.aliexpress.us/item/3256805655501062.html?spm=a2g0o.cart.0.0.760338daI7U9Fj&mp=1&gatewayAdapt=glo2usa

Here it is with a controller:

https://www.aliexpress.us/item/3256805710615595.html?spm=a2g0o.cart.0.0.7b7a38da3P6mhO&mp=1&gatewayAdapt=glo2usa

I'm curious to know what you folks think it could do power-wise. It's similar in weight to the QS138 70H, and I've seen people quoting up to 25kW out of those, and 35kW out of the longer QS138 90H. Is there any chance the SIA155 could hit those levels?

Also, the SIA155-48 claims a wider range of high efficiency, and I find that very attractive.

What do you all think?

 

[neptronix]

Would suggest asking the vendor for a dyno sheet; would help making a good estimate of the true power level.

 

[Moonshot]

Hmm, yes that would be nice. I'll see what they can provide.

 

[dominik h]

I would also like to know the max specs for the other new motors
SIA155-64 Hairpin Motor with Higher performance Peak 29kw 7500rpm 85N.m.
SIA200-50 Peak 28kW 70N.m Mid Drive Motor with 1:2.5 Gearbox

 

[Moonshot]

I hadn't seen those motors, but I did just find them on the Siaecosys Facebook page. I'll see if I can get any more info there.

 

[Moonshot]

Well it looks like they updated the product page with some dyno graphs.

This one is at 200A line current:

And this one is at 300A line current:

More info:

More Graph:

 

[Moonshot]

I wonder how this 72 Volt rated motor would run at the 64-ish nominal Voltage of a 20S LiFePo4 battery pack...

 

[amberwolf]

It will run proportionally slower by 72/60.

 

[Moonshot]

It will run proportionally slower by 72/60.

Do you mean 72/64? Of which the answer is 1.125, so the top speed of the motor would be .125 slower?

That's not too bad of a drop. I'd just have to make it up with a lower gear ratio.

 

[amberwolf]

Sorry, I meant 64/72. That would be 0.88x the original speed, unloaded.