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29+/Fat tyre pressu...
 

[Closed] 29+/Fat tyre pressure

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[#6067375]

What do people recommend as a pressure for the front tyre on a 29er singlespeed.

The tyre is a Surly Knard 29 x 3" and I have been running around 15-20psi, however on today's ride on a couple of stony descents I was getting shook all over the place.

Am I able to run it lower or do I risk damaging the rim or have noticeable drag increase.


 
Posted : 26/03/2014 6:12 pm
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On a 50mm rim- mine was about 12psi- I didn't like the steering at pressures lower than this. It.'s not a true fat tyre, so you're going to be bounced a bit.


 
Posted : 26/03/2014 6:25 pm
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I have velocity p35 rims so am a bit wary of running really low pressures


 
Posted : 26/03/2014 6:39 pm
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P35 tubeless with a knard at 10-12 psi is fine and dandy here. No burps no squirms no drama. I only run 16psi on the front of the sheep with stans ztrs and a raven so im not a high pressure kinda monkey, had the odd rim steike in the peak but no hassles


 
Posted : 26/03/2014 6:45 pm
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Depends on terrain and conditions. Today on a 45 miler with lots of road sections I was running about 22 psi, but on a purely off-road ride I tend to run 15-16 psi.
You are going to get bounced around whatever pressure you put in though, as it is undamped suspension in the form of a large tyre. Take the pressure too low and you'll get lots of pinch punctures (voice of experience speaking!)


 
Posted : 26/03/2014 6:48 pm
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Only pinch puncture if you use tooooobs though..embrace the spaff and liberate yourself from such petty constrictions


 
Posted : 26/03/2014 6:53 pm
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I like tubes, they fit in with my Luddite tendencies ๐Ÿ˜‰


 
Posted : 26/03/2014 6:55 pm
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11 to 12 psi here on tubeless Knard/ Rabbit hole combo also.


 
Posted : 26/03/2014 6:57 pm
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I've been running 20 psi on a P35, could go a little lower,but does feel a bit squirmy. Does anyone know if Dually 29s are in the country yet?


 
Posted : 26/03/2014 8:49 pm
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Bruise Willies - Member
I've been running 20 psi on a P35, could go a little lower,but does feel a bit squirmy. Does anyone know if Dually 29s are in the country yet?

Yes, Duallys are in the UK.

[url= http://www.justridingalong.com/ ]JRA[/url] have built me up a couple of pairs.


 
Posted : 26/03/2014 8:53 pm
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What do people use to convert these rims to tubeless? Is it the velocity tubeless kit or some other?


 
Posted : 26/03/2014 9:13 pm
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Did my tubeless with a 24" innertube split down the middle over the normal rim strip. Think there's a method on 'While out riding' blog, search Google. Didn't use any other tape. Pumped up with a track pump and after initial shaking about to spread the Stan's latex it's barely lost any pressure.


 
Posted : 26/03/2014 10:19 pm
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15 psi on my Surly KramPugs Rabbit hole/3" Knards, depends on your weight what suits you, i`m a tad under 14 stone ๐Ÿ™‚


 
Posted : 26/03/2014 11:30 pm
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You can still get pinch flats running tubeless.


 
Posted : 26/03/2014 11:52 pm
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Tooblissed my duallys with 1" Gorilla tape. All good so far.


 
Posted : 27/03/2014 10:39 am
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Blunt 35s are tubeless ready.


 
Posted : 27/03/2014 3:57 pm