Originally Posted by
Smaug1
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Depending on your snow, you might try a bit higher pressure,
Tundra_Man . 4-5 psi is only for soft, deep surfaces and is SO much harder to pedal than 10. 10 is also a lot harder to pedal than 15. When I run 4-5 psi unpowered, I never see double-digit (mph) speeds, I'm usually running some power at those pressures, but it's also somewhat of a Catch-22, since the bike is 80 lbs with its mammoth battery & motor.
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I generally don't ride the fat bike unless we've gotten 4" or more of unplowed snow, which is why I tend to run the lower pressures. Interestingly enough, if I run above 12 PSI my rear tire expands enough to start to rub on my rack. As a result I don't ever run pressures more than about 10 PSI. I also have monster tires almost 5" wide so that also tends to lower the pressures needed.
There are certain things the fat bike does really well, which is why I own one. Outside of those specific situations, I will opt for my other winter bike. I don't understand people who ride fat bikes on nice summer days; that just seems like unnecessary misery to me.