Monday, February 8, 2016

Fatillac update.

2 of the last 7 weeks were spent floating a long ways from where a bike can or should be taken.

But the other 5 weeks have largely been spent on this bike.




Most noticeably I have temporarily removed the Dorado fork and replaced it with a Wren.  Never heard of Wren?  Not many have, largely due to their recent entry into the US market.  150mm travel, 150mm wide hub, clearance for 4.8" tires.

The fork is actually something that they are merely licensing and importing, with little control over or knowledge of the fine manufacturing details.

My only current complaint with it involves the oil viscosity being too thick for winter temps, something that I am experimenting with this week.  Currently the fork feels great above freezing, but once night falls (when I am most often riding these days) and the temps get into the teens, the damping gets sluggish in both directions.  By about 10 degrees the fork doesn't move, and is simply too heavy and too expensive to ride rigid.

The ideal would be to find a synthetic oil that performs well to about -10, but that can still provide rebound damping at +100* or so, so that I can ride it year round without having to fiddle with the mess of oil.  A tall order?  Perhaps, but I've sourced oils for other forks in the past that can achieve this, so I have hope that it can be done for the Wren, too.



Otherwise the only changes I've made to the bike are to the tires.  A bit wider up front with the 45N D5, which I am studding tonight to cope with our current meltdown.  The JJ 4.0 in back has been a pleasant surprise -- I expected it to crinkle and cut on first contact with embedded rock given it's extremely light weight.  It has resisted my efforts to that end thus far, and has been surprisingly adequate on a range of snow conditions, including thin snow on slippery rock.

Will likely replace it tonight with a Bontrager Gnarwhal studded, again to cope with impending freeze/thaw from our annual midwinter melt.

Not much else to report, other than the novelty of constantly shocking hikers and trailrunners when overtaking them on trails that they assume are too _____ to currently be bikeable.

Details I'm omitting?  Ask and ye shall receive.

Thanks for checkin' in.



11 comments:

  1. Here ya go.
    http://www.peterverdone.com/wiki/index.php?title=Suspension_Fluid
    Pick a viscosity and then find the one with the highest viscosity index and there you go.
    Let us know what you find.

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    Replies
    1. Silkolene RSF 2.5wt. Proven to -25* (and +95*) in other forks/other years.

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  2. Interested to hear how the D5 and Gnarwhal tread patterns are for general snow traction. I am currently testing a pair of Nates with 75 grip studs each, they do pretty well on everything except wet rocks. BTW which Revelate bag is that?

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    Replies
    1. Custom Revelate from ~10 years ago. Keep moving it from bike to bike.

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  3. Great pictures, enjoy reading your blog! Thanks for the post.

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  4. Man I need one of these bikes! Is Devin producing them yet?

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    Replies
    1. Yep, drop him a line -- email one post below.

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  5. Yes. Devin is producing them. Email sales@lenzsport.com

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  6. How is that Reverb treating you in the cold? Mine get weird below freezing. 9point8 Fall Line doesn't seem at all bothered by temps, or anything else for that matter.

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    Replies
    1. Reverb is good to about 20* or so, but only for about 3 hours. Then it's more or less frozen.

      Have been experimenting with a Giant Contact Switch SL dropper on my snowbike, because it is rumored to be good down to about zero. Have had it down to about 10 thus far, and it was *slightly* slower than at above-freezing temps. Already an improvement over the Reverb.

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  7. These are great pictures, I would love to do this someday. Looks so much fun on those bikes.

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