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How much rubber do you need for Snoqualmie Tunnel?

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How much rubber do you need for Snoqualmie Tunnel?

Old 07-11-18, 10:17 AM
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Seattle Forrest
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How much rubber do you need for Snoqualmie Tunnel?

I've ridden the Iron Horse Trail from exit 38 (Twin Falls trailhead) to exit 63 (Crystal Springs). Most of it is fairly hard packed dirt, but there's some deeper gravel near the pass. It's been so many years since I've been in the tunnel that I don't remember what the ground surface was like. I was on a MTB at the time.

I'm considering a ride from Hyak down the hill. I have an endurance/fondo bike, I have tires on it that measure 33 mm, and really don't have clearance to go wider than that.

Can anybody who's done this ride lately give me your best guess as to how doable and enjoyable the ride will be with this setup?
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Old 07-11-18, 10:49 AM
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Hi Forrest, my wife and I went through the tunnel on city bikes with 35mm Kenda Kwests or somesuch last year. It's a thin layer of gravel with some dips and some drips. Anything remotely wide should be fine through the tunnel.
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Old 07-11-18, 07:31 PM
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Originally Posted by Seattle Forrest View Post
Can anybody who's done this ride lately give me your best guess as to how doable and enjoyable the ride will be with this setup?
Did it a few weeks ago when I rode from Bellevue to Cle Elum. It's smooth in there. Your 33's will be fine.
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Old 07-16-18, 11:59 AM
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I'll be on one of toddle's bikes with 32s. He's done it before and said it's totally doable, just not smooth enough to lose focus on the task at hand (don't get distracted, gawking at the view).
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Old 07-16-18, 06:10 PM
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woodway
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Originally Posted by MMACH 5 View Post
I'll be on one of toddle's bikes with 32s. He's done it before and said it's totally doable, just not smooth enough to lose focus on the task at hand (don't get distracted, gawking at the view).
I've done it on 28's (gatorskins) in the past and they were fine. Once you get past Hyak the trail starts to get a bit rougher and looser but 32's would still work until you get past Easton and then it gets pretty deep and unpleasant. I was on 38's in June and was not liking it at all. The further east you get the looser/sandier/rougher the trail becomes.
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Old 07-18-18, 11:25 AM
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I've done the tunnel several times this Spring/Summer on 40's and I agree with previous commenters, 33 should be fine in the tunnel. The crushed rock gets a bit mushy in places where water collects/drips, but nothing wheel-swallowing.
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Old 07-18-18, 11:27 AM
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There's a tire for that.

https://www.compasscycle.com/shop/co...oqualmie-pass/
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Old 07-18-18, 12:29 PM
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Originally Posted by wgscott View Post
Getting a tire company to name a tire after a route is pretty sweet.
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Old 07-19-18, 10:40 AM
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I got distracted and forgot about this thread. Thanks for the advice, everybody! Sounds like I won't have a problem using what I've got.
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