I dont know about that, I really do not know.
You could scrounge garage sales and look for a circular saw.
I believe SpinningMagnets did one just for fun.
Even though they are corded and use AC voltage, if I am not mistaken they could be run on DC voltage.
Next best option is the Unite Motors, $40usd inc s/h
250W 24V MY1016-Y No.B010583
https://www.ebay.com/itm/Unite-Motor-El ... SwVDZaAg0v
https://www.ebay.com/itm/450W-24V-elect ... SwrLxaji3h
A better step up would be the real deal
YESCOMUSA for $190usd + $71usd for s/h
or look on the online classifieds on Craigslist or in Canada Kijiji or right here on ES website.