So I have decided to make 2 DIY carbon filters for my box. The fact is that I just don't have $150-$200 to spend on a good can fan and a phresh filter. I have looked at just about every thread and design on the internet about DIY filters, and it seems like those who are good DIYers, and those who put a lot of thought into it, have been satisfied, overall, with their DIY filters. I saw some ridiculous designs, and some good designs, but in the end, I have decided to go with my own design.
I will be making two of them to make sure I have plenty of airflow in the box.
They will both be identical, and will use some small square buckets that I have around the house, screen that I also have on hand, and two honeywell turboforce fans. My only expense should be carbon and a second fan.
The turboforce fans are rated at 350cfm. When mine is tightened up in the hole at the top of the cab, it definitely creates some serious negative pressure, or at least it did before I increased the size of my passive intake. So I think it definitely has enough juice to pull through an inch and a half of carbon. With two running through carbon, I think I should have even more airflow than I have now with a single unrestricted fan.
If the design works out well, I will create a thread to share my design with everyone.
If anyone is familiar with the logistics of filters and carbon, I DO wonder what is more effective... Granular or pellets, and also coconut shell carbon vs other types. Has anyone watching this tried both and have some data based on that experience for me?