ORIGINAL: mrfisse
I wonder why u say that ? Can it be because you SELL them ?!?!. In high dust areas it cant be a smart choice... and whats the point with a dual layer foam filter when the filter area is 1 cm long ?
I say it because it's true - they work very well on RC engines
You can pick up a TGN filter tons of places, not just from me. Here's a link to the manufacturers page:
http://www.teamgonads.com/Merchant2/...egory_Code=BAF
Like you said, in high-dust conditions, a very large foam filter with an outer dust screen is the preferred choice.