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I ask this as i'm a fatbike newbie with only a few miles under my belt.
Recently bought a pugsley and initially found the kick up the butt when seated and crossing roots etc somewhat annoying..OK i could have stood up.
have since played with pressures and enjoying the bike a lot more especially after fitting a thudbuster in the hope it would compress on the tyre rebound (thereby reducing the arse bump). It seems to work but wondered if it's really unnecessary and there are other ways to deal with this attribute as , in the long run i think i'd like a dropper post . If only someone made a suspension dropper post !
A dropper is a must on any mtb for me.
I've got a reverb on my fatty Dune. Transforms it.
Never ridden a fatbike but don't use a suspension seatpost on my hardtail, don't even use a dropper. Primarily due to the 27.2 seat tube a XC mincing/pootling I do. Would have thought the low PSI of the fatbike tyres would give you a fair amount of shock absorption.
Would have thought the low PSI of the fatbike tyres would give you a fair amount of shock absorption.
This...i mean i thought that was one of the advantages of a fatbike 😕
Maybe its more to do with technique & standing more. Dropper would encourage standing but equally i find my dropper stiffer when seated than my 'forgiving' standard carbon seatpost
It's the uncontrolled rebound that causes the problem which is far more noticeable on huge volume tyres
What pressures are you running? I've been riding a fatbike for 5 years and it would never occur to nme to fit a suspension seatpost.
You might also want to think about seatpost diameter. A skinny (27.2) Ti post will be a lot comfier than a 31.6 aluminium one.
I can answer this question and it's yes.
Years of full sus has given me a sloppy pedaling action. The post soaks up the bouncy ,bouncy when you pedal.
Of course you could adjust your technique but a post is easier.
The post does also offer some damping.
I've got a fairly smooth pedalling technique and no bounce from that despite having ridden full suss. As I say it's the rear tyre compressing then rebounding hard that kicks your butt!
Lower tyre pressures could be the answer here.
Are you suggesting that a fatter tyre running at lower pressure beats you up more than a thinner one at higher pressure?
I think mcnultycop is suggesting the OP has tyres set too hard.
Yes, sorry, my question was directed at the OP, who seems to be implying that the "kick up the butt" was worse on a fatbike than on a normal one. I can't really see why this would be the case. At worst (i.e. if you ran the same pressure) you'd get the same kick. But in practise, since you can run much lower pressures without risking pinch flats, it should be more comfortable. Unless I'm missing something.
yes RP ..maybe not beats you up or worse but more apparent ( like a soft spring)in my limited experience .. a bit like bouncing a ball if you get my drift!
Kind of and if that's what you're feeling then that's all that matters. But your ball analogy is a good one. A bigger ball at a lower pressure wont bounce as high as a smaller harder ball. Fatbike tyres do get bouncy if they are too hard, but the solution is usually just to lower the pressure.
Definitely running your pressures too high if it's [i]that[/i] noticeably bouncy. Even a fraction of a psi makes a difference on a fatty.
Its taken me three months to get use to the rigid type riding after years of full sus .I am riding rocky (unforgiving) terrain and find if I want to ride fast it needs a lot more focus and awarnes of what you are riding over .Slow riding tech can be awsome !