Fat tire Atlantis!

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Mark Reimer

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Aug 6, 2014, 10:41:13 AM8/6/14
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In about ten days I'm doing a long-distance challenge of sorts - 460km in 3 days. Well, it was supposed to be over 2 days, but that is immoderate to me. The entire ride is on a mix of single track, Jeep trails, double track and some gravel roads. The route winds through a Canadian National Park, with wild bison and a ton of black bears roaming around. It should be fantastic! (Definitely will share a ride report after)

The catch is that it's been raining a lot and the ground is soft. So I thought I'd put some fatter tires on the Atlantis. I replaced the Bruce Gordon Rock n Roads with some 2.1" WTB Nano tires. It took a bit of tweaking to make the brake pads avoid rubbing the sidewall when they were released and I also had to move the Nitto Campee rack to the front/upper eyelets in order to clear the tread. However, WOW what a fun switch! This thing is sooo cushy. And to my amazement it rolls much faster and easier than with the Bruce Gordon's. I took it out on an evening ride and got a lot of interest and enthusiasm from perplexed cyclists starring at the freak of nature fat-tire drop-bar contraption I was riding. I think these will be here to stay.


But now I'm curious... could I fit 2.25? 

Here are a few photos of the fat setup:


Rivendell_Atlantis_58cm.jpg

Mike Williams

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Aug 6, 2014, 10:44:46 AM8/6/14
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Looks sweet!    And that trip you have planned sounds so awesome,  cant wait for pics

Sent from my iPhone
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<Rivendell_Atlantis_58cm.jpg>

Chris Chen

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Aug 6, 2014, 11:08:17 AM8/6/14
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THAT.


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Deacon Patrick

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Aug 6, 2014, 11:18:27 AM8/6/14
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Awesome! Have a blast! (How could you not?). I look forward to a ride report of someone else doing stupid stuff in the mountains! Grin.

With abandon,
Patrick

Ryan

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Aug 6, 2014, 12:17:02 PM8/6/14
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Looks neat! You'll have to let us know how it goes....think this is in Riding Mountain , correct? I'd love to see this thing in the flesh...you're probably the only Atlantis owner in Winnipeg
 
Ryan in Winnipeg

Tony McG

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Aug 6, 2014, 12:35:58 PM8/6/14
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I love it !!!  Which rims are you running?  Tubes or tubeless?

Mark Reimer

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Aug 6, 2014, 12:43:46 PM8/6/14
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These are Velocity Dyads, 36 hole. They aren't tubeless as of right now, but am planning on converting them in the future. 

Ryan - you are correct, Riding Mountain it is! Going to start in Neepawa, ride to the West Gate, all the way across the park to the old East Gate, then back south to Neepawa. 


On Wed, Aug 6, 2014 at 11:35 AM, 'Tony McG' via RBW Owners Bunch <rbw-owne...@googlegroups.com> wrote:
I love it !!!  Which rims are you running?  Tubes or tubeless?

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Hudson Doerge

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Aug 6, 2014, 12:55:31 PM8/6/14
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So much awesome! My Atlantis-envy grows stronger all the time.

john muhl

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Aug 6, 2014, 1:45:00 PM8/6/14
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The Fatlantis is a special beast. Fitting a 2.25 isn’t a problem on my 2012 model.

On Wednesday, August 6, 2014 9:41:13 AM UTC-5, Mark Reimer wrote:

Mark Reimer

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Aug 6, 2014, 2:38:54 PM8/6/14
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Oh MAN! That is awesome. I'm not sure the year of my Atlantis, nor do I know if the clearances changed over time, but I've got to try this now. That looks so awesome. 


iamkeith

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Aug 6, 2014, 3:30:44 PM8/6/14
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That looks so good!  So I have a question for you:

Almost every bike I've bought in the last 10 years or so has been as a substitute/proxy for the Atlantis that I really want, because I seem to fall squarely between Atlanti sizes.  But, since I know that I would set it up with the biggest possible knobby tires that I could fit - like you've done here - I've always wondered how that would affect the feel and fit.  In other words, would the big tires make an otherwise slightly-to-small frame feel just right?  Or would they make an otherwise slightly-too-big frame completely unworkable?  

I've never seen any comments from someone who's done it both ways, regarding the change to ride/feel/fit.   Obviously, standover is the biggest issue, but I'd be interested hearing any other impressions that could give me a push in the right direction. 

(For reference, the two sizes I would consider but don't quite fit are 58 and 61)

Patrick Moore

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Aug 6, 2014, 3:35:36 PM8/6/14
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Is it possible to view photos in Google without "upgrading" to G+? 


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Steve Palincsar

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Aug 6, 2014, 3:36:37 PM8/6/14
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On 08/06/2014 03:30 PM, iamkeith wrote:
> That looks so good! So I have a question for you:
>
> Almost every bike I've bought in the last 10 years or so has been as a
> substitute/proxy for the Atlantis that I really want, because I seem
> to fall squarely between Atlanti sizes. But, since I know that I would
> set it up with the biggest possible knobby tires that I could fit
> - like you've done here - I've always wondered how that would affect
> the feel and fit. In other words, would the big tires make
> an otherwise slightly-to-small frame feel just right? Or would they
> make an otherwise slightly-too-big frame completely unworkable?
>
> I've never seen any comments from someone who's done it both ways,
> regarding the change to ride/feel/fit. Obviously, standover is the
> biggest issue, but I'd be interested hearing any other
> impressions that could give me a push in the right direction.
>
> (For reference, the two sizes I would consider but don't quite fit are
> 58 and 61)
>

Have you ever considered getting a custom Riv with Atlantis geometry &
tubing, only sized to fit you?

Pondero

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Aug 6, 2014, 4:18:53 PM8/6/14
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Mark - your plan and your setup make me drool. I hope we get to hear and see more about it.

Chris C. - regarding your search for aggro tires for your Hilsen, save your money. Then buy an Atlantis like this one!

Chris Johnson
Sanger, Texas

Chris Chen

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Aug 6, 2014, 7:01:44 PM8/6/14
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Chris: I have the chicken for that. 650b x 55 will be good enough for me for a while.


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dougP

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Aug 6, 2014, 9:18:42 PM8/6/14
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"Almost every bike I've bought in the last 10 years or so has been as a substitute/proxy for the Atlantis that I really want, because I seem to fall squarely between Atlanti sizes..
(For reference, the two sizes I would consider but don't quite fit are 58 and 61)"

According to the Atlantis sizing charts, there is overlap among sizes.  For instance, if your PBH is between 84 to 89, a 58 cm is suggested, and if your PBH is between 87 to 93, a 61 cm.  So if your PBH is 87 to 89, you could ride either.  For instance, my PBH is 84-85 so I got a 58 but could also ride a 56.  I've ridden a 56 for a short distance & it felt pretty good.  It had honkin' 2.1 WTB tires, while my 58 is on 38 mm Soma C-lines. 

The Atlantis is a versatile design so I would not expect the ride/feel/fit to change a great deal.  The 700c wheel size is intended for tires 35 mm to 50 mm.  Mine came with 35 mm Paselas which were really a bit under 35 mm wide.  I've also had 45 & 50 mm Schwalbes on it.  Other than stand-over height, I couldn't detect any change in fit.  The heavier tires of course affect performance but handling seemed similar (but I don't push the handling envelope at all).

So if a 58 cm feels just a bit smallish, setting it up with the biggest tires you can fit should bring it up a bit.  OTH, doing the same thing with a 61 may be too much.  With stems & seatposts, you can always fudge the size up (within reason).  Shrinkage is more problematic.  Hope that helps. 

dougP

Bill Lindsay

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Aug 6, 2014, 9:24:30 PM8/6/14
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Doug's right.  I have a 87 PBH, and I'd buy a 58, but I could do just fine on a 61.  I've ridden both (multiple times).  I still want one.  Sometimes I think I should sell my Bombadil to finance a Fatlantis, but then I start to miss the Bombadil.  I have already sold my Hillborne to finance a Fatlantis, but regretted it and lucked into buying it back. 

Mark Reimer

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Aug 6, 2014, 9:33:27 PM8/6/14
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FYI - I measured my PBH at home as 90.1. That was the average of three tries while really give'n er. When I visited Riv, Kevin measured it for me and with some extreme discomfort I stretched out to 91, then 92....then 93. Ouch. I ride a 58cm Atlantis and test rode a 61cm. Riv would put me on a 61 or even 63, but I like having a bit of extra stand-over height for hucking it around the trails. Plus I prefer the top tube length of the 58cm. I can still get my bars level with my saddle without an unreasonable amount of stem showing. 

I say, stop waiting. Life is short, buy an Atlantis!


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Tony DeFilippo

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Aug 6, 2014, 11:06:29 PM8/6/14
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Sweet sweet setup!  

To your question I did try out one end of your spectrum, I'm around a 90pbh and lucked into a used 64cm Atlantis locally which I rode enthusiastically for about 6 months before deciding it was to big.  The final straw in that decision was putting on fat rubber and realizing that I'd never be able to comfortably take advantage of the fat-tire-ability of that excellent frame given its size.  The 64cm Atlanti w/ '45mm Nomad's which measured closer to 42 for me was pretty good for daily riding but I'm much happier with my smaller bike.  I'm thrilled with the fit of my 60cm Saluki (650B).

Tony

My Atlantis wearing 2.1" rubber... that was a good day!


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