well, this whole conversation is really informative.
to answer the question about heatsink design-
this is an aircooled cyllinderhead for a racing lambretta (classic italian motorscooter)
the head is roughly based upon the dimentions of an yamaha rd350 cyllinder head.
it is a "forced air" desing. ie: driving forward forces air into and over the head.
surface area is whats critical here. were it not forced air cooled i would be working with a different fin design.
about the sketch-
its really close. the only thing is that the un-slotted portion is in the middle of the part.
more about the part-
i can make the slots bigger. and have less fins. 15 is the minimum number of fins i want to have. i am going to try that cad program and get a drawing for you all.
its looking like horozontal milling would be the best option so far. |