Fat fork - help me ...
 

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[Closed] Fat fork - help me choose

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I'm looking to go full fat on the front of a HT for winter use. The bike is designed for a 120mm suspension fork

So, is fat front possible (without spoiling the ride/geo)?

And, which fork should I be looking at with probably a Nate tyre?

Cheerseverso 🙂


 
Posted : 18/09/2014 8:39 am
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Those on one carbons seem good value


 
Posted : 18/09/2014 8:40 am
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Bud FTW


 
Posted : 18/09/2014 8:42 am
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The offset for the on-one's (and Puffins) is 55mm - most fat forks are a bit less than that.

There's a lot on ebay for £80-£100 with various axle choices (make sure you choose one that comes with an axle if you go 15mm) but they tend to have a 51mm offset.

Not sure what effect offset changes will have on a standard frame with a fat front, tbh.


 
Posted : 18/09/2014 8:46 am
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Bud?


 
Posted : 18/09/2014 8:47 am
 igm
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I have an unused steel OnOne fork that's not doing anything...


 
Posted : 18/09/2014 9:41 am
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Surly Bud 4.8" tyre, bigger, softer, more grip, less rolling resistance than a surly Nate.


 
Posted : 18/09/2014 10:06 am
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Agree with FRC. I have just changed from an On One floater to a Surly Bud on the front of my Jones and the performance difference is night and day. Also, from your perspective the Bud gives a noticeably bigger outer diameter over the floater(or other 4 inch tyre) which will help with the front end height. Based on the age old accurate measure of 'having a look' it's near enough the same as my 29er knard mounted on a flow.


 
Posted : 18/09/2014 10:13 am
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Yeah - the Bud is nearly as dammit 29+ in size. Put it on a 70mm rim and run it at roughly 7.5psi and enjoy!


 
Posted : 18/09/2014 10:24 am
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OK, is a bigger fork offset, fatty wise good?


 
Posted : 18/09/2014 7:48 pm
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What's the HA on your frame?

Hard to see past an OO fatty Carbon or a steel one SH dirt cheap. Designed around 68 deg HA.

As above, Surly Bud FTW. Just better in every way apart from a few grammes.


 
Posted : 18/09/2014 8:22 pm
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I'm amazed everyone isn't doing large offset forks on fat bikes.

I'm a big fan of Nates on the front, unless you are doing lots of snow/sand riding when Bud rules. Buy the high TPI ones though- so much better.


 
Posted : 18/09/2014 8:35 pm
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I very rarely ride snow or sand shaggy. I find the bigger volume of the Bud allows me to carry more speed downhill on rocky stuff, and it rolls easier too.

So I put one on the back too 🙂


 
Posted : 18/09/2014 8:38 pm
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69.5°


 
Posted : 18/09/2014 8:38 pm
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This is the bike I'm planning to use

[img] [/img]


 
Posted : 18/09/2014 8:42 pm
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Bedmaker: Why not a Lou? I even loved Bud/BFL for snow racing, for trail riding Nate/Floater was always a better compromise for me. YMMV etc.


 
Posted : 18/09/2014 8:53 pm
 doh
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You should prob just buy a dirt cheap 2nd hand fatty, been going for £500-600.
Try for a month or so then sell your other bike:)


 
Posted : 18/09/2014 9:54 pm
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I haven't tried a Lou Shaggy. I thought if it is a bigger Nate, then it wil probably be overkill and a bit draggy on the back. I guess it would ultimately have more traction, but the Bud has ample and rolls along nicely.
Bud/BFL is my summer combo of choice, although the BFL is scary on any mud/wet grass. Superb on dry and rockier stuff though. Served me well in Torridon / Spain / Morocco / trail centre riding.


 
Posted : 19/09/2014 6:50 am
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The Salsa Enabler is suspension corrected for a 80mm travel fork

That's 50mm short of 120, although I don't think 120 is the figure that should be used is it...? Isn't there a sag figure?

The enabler still seems too short to me (468 a/c) to work


 
Posted : 19/09/2014 8:04 pm
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Don't forget the tyre is a lot taller than a standard one - probably adds 20mm to the effective a-c in terms of the ground to head tube height.


 
Posted : 19/09/2014 8:06 pm
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This is what I was thinking, so it might be closer than it seems


 
Posted : 19/09/2014 8:27 pm
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I've got a spare Jones Unicrown if it's any use. 435mm a-c, 55mm offset


 
Posted : 19/09/2014 8:58 pm
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Don't forget the tyre is a lot taller than a standard one - probably adds 20mm to the effective a-c in terms of the ground to head tube height.

I'd be surprised. An on one floater was about the same size as spec purgatory on a flow rim but noticeably smaller than a 2.4 Ardent on a dually. The bud is obviously a bigger tyre and sizes up the same as the ardent dually combo. Have a look at some images of fat fronted jones to see what I mean.

Bonesetter you're going to steepen the head angle and lower the front end. I tried it with my yelli screamy and it rode ok. I alps of recall someone going by tag nitrousjunky on mtbr who had a stickel built so he could run a fat enabler fork or suspension front but from memory that was designed around 100mm suspension. Why not buy a headset reducer for the lower crown and stick your stooge fork in there to get an idea how it would ride? Cane creek and hope make them.


 
Posted : 20/09/2014 6:32 am
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Hmmm... Stooge fork is 475 a/c (with a nice 55 offset). However, it's not that wide to fit full fat - still, as you suggest it would give an idea, and I do laready have a HS reducer set-up I could fix up

Yeah, I remember nitros's 'stickle with a rigid.

I used to think I couldn't ride without a 'long' suspension fork back then. Going 100 would have given a more versatile bike


 
Posted : 20/09/2014 8:20 am
 OCB
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Curious, I had thought that I'd posted this yesterday, but I can't see it now and the discussion has kinda moved on anyway, sigh ...

Granted the geometry is different [i]but[/i], I run a Salsa Enabler on the front of my Swift (with a Surly 135mm rear SS hub and Salsa 'Semi 29er' rims (30mm) - currently using Conti MK v1's in 2.4) - and it's great, it works *really* well as a wide 29er.

The plan was for half-fat versatility at some point, but I didn't go that far in the end, given how well it works as it is.

That'll be no help tho' of course. 😉


 
Posted : 20/09/2014 10:57 am
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JUST the kinda feedback I'm after 🙂

Strange, I seem to remember seeing a comment involving a Swift too... 🙂


 
Posted : 20/09/2014 11:14 am
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Yes but the swift is designed around an 470mm rigid so it doesn't change the geometry. Unless you spec'd your stickel with a steep head angle then I suspect you'll be fine on that front but it's going to lower the front down which might make it feel a bit rubbish...albeit we're only talking 20mm once you account for sag. Not trying to piss on your chips here by the way, I did similar experimenting before I got my jones and it's fun to try. Can also take the air out of your forks and zip tie the crown to the brace for a gentle pootle up the street test.

What would be really fun on your stickel is a fat front with a nate and a rockshox bluto...... 😀


 
Posted : 20/09/2014 11:39 am
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John_I - I've emailed you regarding your fat fork.


 
Posted : 20/09/2014 2:54 pm
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Emailed you back.


 
Posted : 20/09/2014 3:30 pm

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