Fan questions (and some ranting)

Vertex 3D Printer Vertex - Issues while printing
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We just finished assembly of our vertex and first print is underway (well second really).

A few questions to begin with; both fans on the hotend spin relatively fast (65% ?) by default, eg, when loading filament. At these speeds, I can barely get above 200C on the hotend, and certainly not at ABS temperatures. Even to get to 225C for my glass pla, I have to manually set the fan speed to just ~20%, which makes the little square fan stop turning. Is this supposed to be like this? Where do I change the default settings when using the LCD? And why on earth are these fans set up the way they are? Both fans seem to cool both the insulator and the print; this makes no sense to me.

I also dont quite understand the bottom fan. What is it supposed to cool? The mainboard ? And why is it tiny and terribly noisy when a 90 or 120mm fan could be placed there?

Lastly, some more ranting. Ive owned a K8200 for a few years and am mostly happy with it. Since I wanted a dual head, the K8400 seemed like a logical buy.
Consider however, the two most useful and popular upgrades of the K8200 where an all metal hotend (E3D) and a more powerful heated bed. Im so disappointed to discover the vertex has again peek insulators and this time not even a heated bed.

On the bright side, print quality seems to be quite excellent.

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65% looks to me quite normal, what you can do is to turn the small fan a bit so it does not cool the hot end but mainly the print itself.
This was something I did as well to make the heating of my hotend much quicker.

The bottomfan is for cooling your mainboard, there are some nice desings on Thingiverse for it, to make the airflow better. like this one: thingiverse.com/thing:677676

It is indeed sad that there is not a heated bed included, but hapily it is quite easy to replace with a heated bed. Marlak has a seperate section on the forums to even order one from him which are of the best quality! There is also a dummy guide included.
viewtopic.php?f=64&t=14714
For the metal hot end you can use the E3D V6’s, that is something that is still on my to-do but I’m waiting for it since I heard that it’s not that easy to fine tune it correctly.