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simplemind

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Reply with quote  #1 
A recent gravel race had about 4 miles of soft, dry sand in which just ate my lunch.  I was running WTB Resolute 650b, f&r and had reasonable results in previous sand, but this stuff was so fluffy that it just buried. 
Any advice on tires/rim size?
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Volsung

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Reply with quote  #2 

100mm rims and 4.7+ tires.

 

If there was something solid underneath, 700x33 cross tires may have worked, but some stuff just isn't rideable and isn't worth planning around. 

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simplemind

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Reply with quote  #3 
Quote:
Originally Posted by Volsung

100mm rims and 4.7+ tires.

 

If there was something solid underneath, 700x33 cross tires may have worked, but some stuff just isn't rideable and isn't worth planning around. 



You may be right, "just isn't rideable" because there was not a solid base in many parts.  The segment was 3.6 mi long, essentially flat, and I averaged ~6 mph.  I heard that the front runners, just hopped off and ran much of that segment.

Being new to the sport I'm trying to learn what to do when this type of terrain comes up.  Maybe you could treat it like sloppy mud?
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drwelby

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Reply with quote  #4 
What's the widest tire you can run? You want wide and soft. If you really want to be strategic maybe consider a deflation and inflation strategy.
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simplemind

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Reply with quote  #5 
Quote:
Originally Posted by drwelby
What's the widest tire you can run? You want wide and soft. If you really want to be strategic maybe consider a deflation and inflation strategy.


44 is about it, safely.
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Volsung

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Reply with quote  #6 

Mud might be the closest comparison except you don't look cool after going through sand.  You're basically limited to cutting through or floating over sand/snow.  I haven't ridden any sand on a mountain bike in a long time but the last time I did it on 40mm MSOs it was terrible.  Resolutes should be better, but I dunno how low you were or can go with them.

 

Sometimes there's grass nearby that you can ride along, or you can just hope you never see those conditions again.  A good rain can firm sand right up.

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simplemind

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Reply with quote  #7 
Quote:
Originally Posted by Volsung

Mud might be the closest comparison except you don't look cool after going through sand.  You're basically limited to cutting through or floating over sand/snow.  I haven't ridden any sand on a mountain bike in a long time but the last time I did it on 40mm MSOs it was terrible.  Resolutes should be better, but I dunno how low you were or can go with them 

Sometimes there's grass nearby that you can ride along, or you can just hope you never see those conditions again.  A good rain can firm sand right up.



Yeah, I was basically caught with my pants down and nowhere to escape.  Even the grassy patches on the sides would not hold...it was like dry quicksand. [wink]
I was probably too quick to blame something other than my lack of skills, but I thought I'd pose the question.
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stevef

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Reply with quote  #8 
Sand is tough-even the best riders struggle with it at times.  Some tires work better than others, but some of it is just technique/practice, and the best sand tires may not be the greatest overall choice.  I try to pick my tires for the majority of conditions that I'm dealing with and just do the best I can when I hit a patch of something extreme like sand, mud, etc.  4 miles of sugar sand sounds horrible on anything short of a fat bike, and I'll bet most or all riders had to walk a lot of it.
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zeerobb

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Reply with quote  #9 
We had some really deep sand in Pratt Kansas open range ride, I was running clements tubeless, 40mm front 38 back, 30psi, and I was fishing out BAD, but once I sat back further in the saddle and kept my weight off the handlebars I noticed it became easier to control..I also picked my lines and stayed clear of others and just committed to my speed which at time was around 10mph,any slower and I was getting stuck, any faster and I was fishtailing.
  
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chas

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Reply with quote  #10 
I have a sand racing tire.  60mm Schwalbe G-One speed.    The point of the tire is to run low pressure and have maximum contact size to float over the sand

But...

This is the opposite of what you need with mud.  The best mud tires are narrow, slice down through the mud to something underneath where there is grip.

My mud tires X-One CX tires are horrible on sand, my sand tires are horrible on mud.

You of course can try to split the difference and get a fat tire with deep tread....
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simplemind

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Reply with quote  #11 
Not me, but you get the idea!

[image]
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Volsung

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Reply with quote  #12 
Yep I'd just give up.
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stevef

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Reply with quote  #13 
That looks like a good place to take a little walk for sure!
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