Carl,
We first learned of NFS from the US Pro CX mechanics at some of the teams we were working with some years ago.. then through us it migrated to the European CX scene where it has been used with great success and been used by a couple of teams on the podium at Cape Epic as well as in World Cup mountain bike racing... It handles dirt, dust and muck exceptionally well and it's not uncommon to finish a muddy CX ride and find the chain looking remarkably clean.. people post photos of this on Instagram with some frequency if you want to search it.. The key is getting the chain wiped off appropriately after lubing, NFS is a wet lube, but it's real advantage seems to be the way with which it wicks into he chain and stays there.. so having extra lube on the outside of the chain doesn't serve any purpose...with a sufficient wipe down after lubricating the chain, it will shed mud and grime really well while remaining very free running and quiet.. even after 24 hours of rain riding, it runs quiet and smooth!
The inventor of NFS, Josh Simonds, is a chemical engineer who was after a lube that could handle a rainy P-B-P and spent years working on the stuff... we work with him because he's awesome and the stuff is simply amazing. It's also the best tapping fluid I've ever seen!
Mainly we are just happy to see the product and Josh get the respect he deserves.. our customers for this product are incredibly dedicated to it and it's nice to have some data for why that is... as we've said from the beginning, it was the only drip lube to be in the top 10% for both speed and durability, and is only beaten out by hot-melt waxes. So for those of us who don't have an ultrasonic cleaner, spare crock-pot and and extra hour for chain maintenance, our testing and that of others has shown this to be the next best option.
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