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Strength of motor in blender or processor for making ice cream from frozen banana

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Was making delicious ice cream by pureeing/blending a frozen banana (cut in pieces) in my old Oster blender (model 641). In recent years, I had noticed that the lower speed settings (among 10) were not working well (they would activate if I would choose the faster speeds then press them). Tonight, during the blending, I smelled buring and then saw smoke coming from the base of the blender. The Osterizer is an 800 watt machine and its base is very heavy. I turned to my other older appliance, a cheaper and much lighter-weight food processor, a GE processor model D1FP1-4200, even louder than my Osterizer. Wattage is 360. It was able to puree the frozen bananas and frozen blackberries. I normally add a little bit of milk, ideally less to get a more solid and yet creamy texture. With the food processor, I added more milk and the result was something between the soft serve ice cream I normally get and a smoothie. My questions are these - what minimum wattage should a person use to avoid burning out a motor used for the purpose I have described, and ... is there less drain on a motor in a food processor that has a larger diameter in its container base, and consequently longer blades cutting through what appears to be less food material? That is what I thought of - that even though the processor had a wattage of 360 watts versus the Osterizer's 800 watts, that the smaller base ( about 2 inches and each of the four blades being about 1/4 inch in length vs. the GE's 5 inch wide base and each of two processor blades about 2 inches in length with a different shape than that of the Osterizer's blender blades) in the Osterizer would put greater strain on the motor. I thought, if the Osterizer cannot blend through the frozen banana material at 800 watts, how could a lesser wattage of 360 watts do the job? The processor, perhaps due to the shape of the blades, wasn't able to cut through the last piece of frozen banana slice - I had to cut it up into finer pieces before it finally pureed it. I am looking at replacing the blender and would like to get a blender or maybe a processor that can handle this job. I have seen the Vitamix make "ice cream" but I prefer to make ice cream without ice cubes. I have seen them make ice cream only with ice cubes. Maybe it can be used to make the banana ice cream by using a slower speed. I think Cuisinart makes a highly recommended blender with a strong motor. I seldom use a blender, so I prefer to buy a blender for the purposes I plan on using it for. I have noticed the Yonana ice cream maker and see that it is recommended as being decent. I'd rather use a blender and make the ice cream in the amount I choose and add other ingredients at the same time instead of the manner described for using the Yonana. Plus - I have been fine just using one banana per recipe; the Yonana apparently requires at least two bananas to "push" the content through the machine. Has anyone else burned out a blender motor by making this frozen banana ice cream, and are there less expensive blenders that can be used? (The Nutribullet looks like it might work for this purpose, but at a price of about $110, a larger blender might be more practical, though I am sure I would use the Nutribullet to make quick healthy drinks - by the way, its motor is about 600 watts, much more powerful than the Magic Bullet.)

[Edit by me after the initial post was made ... The Oster blender appears to still be operational.
I turned it back on and tested all speeds including the slower speed which turned on initially
after I first tested the higher speeds. I don't understand how it could have been smoking before
and smelling of burning parts but still be operational. At first the slowest speed didn't work when
I first pressed it with the container attached. Then it did turn. I also found other discussions
on this board with similar concerns regarding blenders and processors. This thread is more
specific as to the motor speed. One of the posts in the other threads referred to the contour of
the blender container affecting the effectiveness of the blend - that a wide base with a straight
up and down container side did not pull down contents well. The Osterizer I have has a narrow
base with edges expanding outward toward the top. I didn't like the fact that the base was
NARROW, causing me to frequently have to push down contents, such as when I make hummus,
until the blender is able to pull down the contents on its own.)

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  1. Your needs could be easily met with a Vitamix but have you thought of using a Champion juicer? Unless you have an aversion to one-ingredient "ice cream," it does an even more impressive job than a blender: http://www.youtube.com/watch?v=_7quoG... ; http://www.youtube.com/watch?v=Hn-aY3...; http://www.youtube.com/watch?v=1onpc-...; http://www.youtube.com/watch?v=X9XMz1... . We're talking a MUCH better and more versatile machine than the Yonana; I've had my Champion (I bought the commercial model) since 1988 and yes, you can use one banana. And you don't need "ice" cubes to make ice cream in the Vitamix--you can use frozen fruit or make cubes from other things such as cream, soy milk, almond milk, coconut milk or water, custard base ...the sky's the limit (I've only once--since 1988--used water in a smoothie just to see how it would be and later tweaked the recipe to include commercial unsweetened almond milk). But regardless of what your "frozens" are, you'll still need some liquid.

    Wattage isn't the most important consideration for your needs because much depends on how efficiently the blender handles its task. Then there's the matter of how well the machine is made. Appliances made in China, regardless of how high their wattage is rated, tend to crap out pretty quickly for heavy applications (and very often under rather moderate usage as well).