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Added reply in a thread The Internet Was Wrong: Short Chainstays Suck* 2/7/2019 2:33 PM

@HeatproofGenie Thanks for trying it out. To me, it only helps determine how far my hips are "forced" behind the BB. I hate the strain of the "toiletbowl hover" position. I wanted more of a boxer's/fighter's position, hence I've been happy seeing the

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Added reply in a thread The Internet Was Wrong: Short Chainstays Suck* 2/7/2019 1:45 PM

That math scales absolutely horrendously. No wonder you are so prejudiced about long wheelbase bikes. I suggest another method. May I suggest one that uses a fixed # to determine how forward the center point between the axles is in front of the BB? It ... more »

Added reply in a thread The Internet Was Wrong: Short Chainstays Suck* 2/7/2019 1:23 PM

I picture your DH bike being similar in CS and WB to Jerome Clementz's Jekyll (edit: med 27.5, which earned "bike of the year" recognition from pinkbike I believe). Differences include a slacker HA and shorter reach. You probably got more of an upright ... more »

Added reply in a thread The Internet Was Wrong: Short Chainstays Suck* 2/7/2019 12:53 PM

@Big Bird, can I see picture of your bike with super short CS and a the longest front you got? And can you give me an idea of how you like to ride it? @Jeff/JFL: I'll tell you ahead of time that 50:50 is cruiser bike territory. Current examples of it ... more »

Added reply in a thread The Internet Was Wrong: Short Chainstays Suck* 2/6/2019 3:23 PM

Steve@Vorsprung is essentially describing weight bias ratio. Put a weight scale under each of a bike's wheels, to measure the load difference between them. Shift and hold your hips forward and back, and the vertical load changes on each wheel. Too short ... more »

Added a comment about feature Aaron Gwin's Size XL Intense M29 with Kenda Tires - Intense Factory Racing 2019 Unveiled 1/23/2019 11:51 AM
ninjichor

I've probably worn through the sticky rubber already on my Hellkat, but it was seriously unreal how grippy it was when I first got it. Heck, 1 bike park run at Skypark seriously had me close to ripping knobs off of it. Pro version with ICB RSR KVS. Looking to compare with the 29er Assegai. Definitely in the same league, along with Magic Mary (purple addix). Mega draggy though.

Butcher and DHF didn't seem to be in the same league anymore (in a lower tier), but I see that Spec now has the eliminator. The Hellkat's grip on its harder inner rubber compound seems to be not really any worse than standard trail bike tires in terms of handling (my fav is the the DHR2 DC EXO/TR).

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This feature has 23 comments.

Added reply in a thread Advanced geometry nerding 1/10/2019 11:52 AM

Too rearward of a weight bias, and your front wheel is more prone to lifting and being squirrely--doesn't feel planted in the rough, prone to washout when turning, and lifts on steep tech climb (esp on impact with roots and stones), often throwing you ... more »

Added reply in a thread Advanced geometry nerding 1/9/2019 9:04 PM

I am getting a steel FS frame custom made (3.9kg w/o shock) with geo based on balancing FC and RC. Hoping I have the numbers right to get the right amount of weight on each wheel, lowering the need to "hunt for balance and traction" or "compensating ... more »

Added reply in a thread Advanced geometry nerding 1/9/2019 7:33 PM

https://www.mbr.co.uk/news/chris-porter-dream-bikes-379753 As of Sep 20 '18, Chris Porter is on a Geometron G16 in XL with 29 front, 27.5 rear. Quote from the article, "I’m running the Mojo Rising adjustable offset crowns on a [Fox] with a 29er front ... more »

Liked a comment on the item Casing Rocks is Bad. Vital RAW with Vero and Leo Sandler 11/28/2018 10:58 PM

"worst case scenario".

Added a comment about video Casing Rocks is Bad. Vital RAW with Vero and Leo Sandler 11/28/2018 3:37 PM

0:58 for the rear wheel explosion

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This video has 10 comments.

Added reply in a thread FOX Moving to Georgia and Reno 10/31/2018 11:51 PM

Nice location. Between Atlanta and all the mountains (northern Georgia). Not pleased hearing that the NIMBYs in Cali are winning though...

Added a comment about press release Introducing the World's Lightest 80mm Dropper - BikeYoke Divine SL 10/17/2018 3:02 PM
ninjichor

I'm just boggled as to what that frame, tire, and saddle are. I've seen such designs before, but can't put a name to them.

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This press release has 9 comments.

Added a comment about video Sarcasm or Reality? How to Buy a Mountain Bike 10/15/2018 4:53 PM

Satire.

I sympathize with the co-workers at 2:09. He just spread the "disease" to them, though it'd probably remain dormant. Tends to become malignant if the infected had good memories as a child, adventuring on a bike. If those two were sheltered indoor-kids, they'd have high resistance.

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This video has 8 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/13/2018 2:08 PM
ninjichor

Just call me an officer of the "what size did you ride test" police. I'm just going to assume XL, based on the tester's height. That "balanced" feel is not gonna be there in the other sizes, with smaller sizes begging for more length up front. Not surprised that Boobar long-forked his bike for extra length.

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This feature has 27 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/10/2018 11:25 AM
ninjichor

@just6979 Well, if you do that, then this XS would have a reach of ~485* to balance out the front center. Not unfittable, but it'll take a lot of convincing to sell. I'm amused by the thought of it, cause I really think I can make that work as a one-off.

One reason why I think people sit more than they should, is because their out-of-saddle fit is uncomfortable. They likely already worked up their sitting pedaling muscles to be more efficient too.

Hope forward geo takes off, to lessen the difference between sitting and standing positions, thanks to the steeper STA. Already showing promise, with a few new bikes showing up with 77d seat angles and reach that's more than 50mm longer than usual. Just need these brands to not neglect the other sizes, in terms of getting rider CoG balanced between the axles.

* I estimate my CoG to be about 175mm forward of the BB, when in my out-of-the-saddle pedaling position with the very slightest touch on the bars on various bikes, roughly the length of a crank coincidentally. Should be less for a shorter rider.

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This feature has 27 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/10/2018 10:47 AM
ninjichor

Primoz, you are vastly underestimating how much standing on the pedals weighs the front. Perhaps you're a very tall rider that often gets bikes in the recommended size, and often have to tuck with your chin over the stem to compensate for rear-heavy geo, but it doesn't have to be that way.

I want to spread just how nice it is to have excellent weight balance simply through standing straight on the pedals, in your out-of-the-saddle pedaling position. It really takes a load off of your body to hold such positions (aggro over the stem, or defensively behind the saddle), with a bonus of being able to pedal whenever you like, without needing to get into position to anticipate obstacles. The bike sort of does everything for you, so you have more opportunity to manhandle the bike, which is even more intuitive.

You sound like you want to stick to what you're familiar with, a short bike with a rear-heavy weight bias, but seem prejudiced about making seated positions fit with such a relaxed looking seat angle. Downsides in both configs: relaxed STA forces you to use different muscle groups which can be untrained (can be a bit painful), while steeper STA might make things seem cramped (also somewhat painful). Solution is to open up to a longer bike--longer CS and longer wheelbase, long enough to enable forward geo where your seated position uses similar muscles to the ones you use when standing.

I'd like to suggest BikeCAD to you, to try out. Perhaps it will give you a perspective of how a rider fits on a bike. Works in a browser, though a bit slowly. Can enter all the rider measurements, showing how arms and torso affect seated fit. Have the dimensions of a shorter person too, to add some contrast and depth, and to see the challenges of designing.

P.S. blame industrial designers for slack actual seat angles. They try to get it to closely match the fork angle, since having the seat and fork at different angles looks funky in side shots.

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This feature has 27 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/10/2018 10:17 AM
ninjichor

Reach is measured to the top of the head tube. Can have the same reach, but vastly different front centers. It's just one point of many that can affect the location of the front axle, besides head angle: head tube length inc headset stack, fork length, fork rake/offset, fork travel, etc.

Make the head tube longer and your reach is shorter. The other stuff should be self-explanatory.

Reach is generally more for out-of-the-saddle fit. You compromise that if you try to address OTB risk with it alone. You can address it with a combo of the above, plus CS length. Technically, you can just relocate the BB rearward in relation to everything else.

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This feature has 27 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/9/2018 1:40 PM
ninjichor

When the Spec does it so well on the Stumpjumper, gotta find something else to compete on. I suppose making the suspension compensate for the nose-heavy geo on small, and compensate for the rear-heavy geo on XL is a start...

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This feature has 27 comments.

Added a comment about feature Vital Rides the All-New Cannondale Habit 10/9/2018 10:09 AM
ninjichor

"XS are going to feel like they're going OTB much easier than a rider on the Med."

Your prediction is right, but it's not due to the reach, it's due to there being so much weight on the front wheel when out of the saddle. You can have super long reach, but if the bike's weight distro is still forward due to a steep HA, you get the same end result. Steep HA not at fault either, as you can make a bike that feels balanced with one--it's the distance between the BB and either axle that is the root (precise "ratio" of front center and rear center).

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This feature has 27 comments.