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<blockquote data-quote="Haunz" data-source="post: 5070915" data-attributes="member: 576010">If there is a significant difference in the size of the motor then there will be a significant difference in it&#039;s performance as a heat sink.. (I didn&#039;t know that motors came in medium and large.. //content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif)If you had the same coil &amp;amp; same power in a 20lb motor and moved to a larger, heavier 40lb motor... you wouldn&#039;t double the surface area, which is the main key to the whole equation...&nbsp; performance as a heatsink would not be &#039;doubled&#039;... but I&#039;m also quite sure that the coil would definatly run a bit cooler.. (I am also quite sure these types of differences have been modeled out by different manufacturers/lab guys before)There is a reason why the GTI has cooling fins and DDs and some others have cooling vents machined into the motor... it increases the surface area of the heatsink.. (aka the motor). The simple fact that some companies try to increase the surface area of their motors, should tell you that it&#039;s a heatsink to begin with... but I digress</blockquote>

[QUOTE="Haunz, post: 5070915, member: 576010"] If there is a significant difference in the size of the motor then there will be a significant difference in it's performance as a heat sink.. (I didn't know that motors came in medium and large.. [IMG]//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif[/IMG]) If you had the same coil & same power in a 20lb motor and moved to a larger, heavier 40lb motor... you wouldn't double the surface area, which is the main key to the whole equation... performance as a heatsink would not be 'doubled'... but I'm also quite sure that the coil would definatly run a bit cooler.. (I am also quite sure these types of differences have been modeled out by different manufacturers/lab guys before) There is a reason why the GTI has cooling fins and DDs and some others have cooling vents machined into the motor... it increases the surface area of the heatsink.. (aka the motor). The simple fact that some companies try to increase the surface area of their motors, should tell you that it's a heatsink to begin with... but I digress [/QUOTE]

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