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Added a comment about member blog 2006 Santa Cruz V10 vs 2021 V10 with Steve Peat - Are DH Bikes Faster Today? 10/27/2021 5:29 PM
jeff.brines

Two things...

1) Thank you for this! Helps see how the "super official" test could be improved upon. The best test (being its Peaty) would be Fort Bill. That'd be so rad to see!! I doubt that poor wheel would survive however. #fanboi alert...lol

2) Your avatar/handle might be the best on Vital. Lumberg (sp?) approved.

This member blog has 15 comments.

Liked a comment on the item 2006 Santa Cruz V10 vs 2021 V10 with Steve Peat - Are DH Bikes Faster Today? 10/27/2021 5:27 PM

Gnar factor is not super high except the steep bit around 5:00. Typically most people go around it because once you plunge into it, gravity takes over and you struggle to control speed for the berm. the braking bumps can be like stairs.

The track is quite fast and has good flow, not a lot of...more

Added reply in a thread 2022 Mountain Bike Team Rumors 10/27/2021 4:45 AM

Watching his insta makes me think that's a "hard no". He's not training, not showing up to smaller races, not even riding a DH bike. Would absolutely love to see him come back though.

Added reply in a thread 2022 Mountain Bike Team Rumors 10/25/2021 12:11 PM

As others point out, no Team Rumors/Ream Tumors is the biggest loss.Warner always slipping up was great and added fuel to the fire. Two other things... 1) No "high drama" contracts are up or unknown at this point (right?). When everyone was wondering ... more »

Liked a comment on the item Vital MTB Test Session - Downhill Bike Recap 10/23/2021 2:54 AM

When it comes to suspension, there’s no replacement for displacement.

Added a comment about feature Steel, American-Made, High-Pivot Enduro Bike - Evan Turpen, Contra Bikes - The Inside Line 10/22/2021 2:19 PM
jeff.brines

The bike, dude & process are all awesome. I'd love to ride one. Hell, if I ever have the means, I'd even buy one! The idea of building a frame to be "generational" is very cool. That said, I have no idea how ET is making the math work on these. Even at high prices, to try and compete with the big brands (which in one way or another you are) while still selling enough at a boutique price point to keep the proverbial lights on AND pay yourself...man. You sir, have some serious balls. Kudos for putting the rubber to the road on a project many dream about but few actually follow through on. Fun to see how they develop!

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This feature has 19 comments.

Added a comment about product review Kona Honzo ESD Review 10/20/2021 3:10 PM
jeff.brines

Well, countering your point would require you to read "walls of text, bullet points" (which you already suggest is too hard) so I'm not sure how I can engage. Simply, if you don't want to dive in, and instead want to argue for the sake of arguing, its a giant waste of time. I know why a rear center length is picked, and broadly speaking, axle path has very little to do with it (unless its a total outlier - alla BCD 2004)

My big takeaway: If a person can't even say "oh man, I see, there is a lot more to this than I thought, maybe I should reconsider my view on this" with respect to how & why a bike designer choses a rear center, we are SO FUCKED when it comes to issues that actually matter. LOL.

This product_review has 19 comments.

Added a comment about product review Kona Honzo ESD Review 10/20/2021 12:54 PM
jeff.brines

I love the internet. LOL.

This "debate" is degrading faster than even I care to keep up with. If anyone outside of this guy wants me to more fully explain anything I've put forth, please ask. I've covered this topic extensively.

In case Mr. Dunning Kruger Effect wants to learn more - https://www.vitalmtb.com/forums/The-Hub,2/The-Internet-Was-Wrong-Short-Chainstays-Suck,9344?exclusive_forum_user=false&page=1

Otherwise, have a good one. Your n=one subjective handling experience is not something I care to even remotely dive into. And no, you've countered nothing with "data".

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This product_review has 19 comments.

Added a comment about product review Kona Honzo ESD Review 10/20/2021 10:07 AM
jeff.brines

Agree to disagree might be the best option here. I've basically written a phd level thesis on this topic lol. I don't want to go repeat it here but for fun, I'll try and quickly break this down for you.

1) You are ignoring how immaterial the rear center change really is. A Yeti SB140 is basically neutral, (4mm back, 5mm forward). Other bikes mirror this to a lesser extent. You aren't going to feel that no matter where you are in the bike's travel. Even something like a Commencal which has the most "forward" axle path of anything I know doesn't change THAT much. Something like 9mm overall? And most of that comes in the last 30%. Point is, bike designers aren't really "pricing in" chainstay length change when the design their bikes because rarely is it all that material this side of your super high pivot Which brings me to my next point - high pivots don't even change that much. The GT Force extends about 10mm. The Cannondale high pivot about 12mm. They don't corner poorly, no tester has suggested this nor have any of their racers struggled in the twisties. (I echo this sentiment having ridden one)This alone blows up your entire sentiment that we are trying to shorten up the rear center in corners for agility reasons. As to where we spend our time while riding as far as travel is concerned, if you were to analyze any telemetry even the best riders aren't using the last 30% of the travel for very much *time*. Remember how a spring works. Remember how suspension cycles. Most of your time is going to be spent around the sag point +/- 30%. Yes, you'll use full travel (or something near it) but those instances are very short and quick. I hope I don't have to explain this to you.

2) Your unwillingness to read up on this topic does not somehow give you a pass to put terrible ideas into the broader ether. I don't really care what you think as much as I care someone might read what you wrote and believe it.

3) I never said longer is always better. Again, if you'd actually care to read what I wrote as it pertains to *rear center lengths* you'd understand what I'm arguing for is anytime the front center grows so too should the rear center. As to what those proportions need to be, thats up for debate and very impacted by rider style, your own body's proportions, what you want the bike to do, what kind of bike you are riding (discipline), head angle, fork offset, stem length, reach, stack and anything else that has to do with balance between two wheels (which does include axle path, but its far less a variable than you are suggesting...its way down this list).

This product_review has 19 comments.

Liked a comment on the item Kona Honzo ESD Review 10/20/2021 6:52 AM

Most people riding hardtails are looking for a bit more pop and agility compared to out right stability. The rear of your bike is going to be bouncing anyways so you are going to ride rear center or off the back of the bike even if you are going fast. So basically without rear suspension...more

Added a comment about product review Kona Honzo ESD Review 10/20/2021 6:52 AM
jeff.brines

I agree with this.

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This product_review has 19 comments.

Added a comment about product review Kona Honzo ESD Review 10/20/2021 5:24 AM
jeff.brines

I don't want to sound like a dick, hence why I just said "no" (so maybe you could go research this). You are wrong for two big reasons.

1) Your hypothesis isn't right to begin with. Go look at any non-high pivot. Measure the amount the wheel path comes forward. You'll find even a bike that isn't a high pivot extends backwards first then goes forward. In fact, where the bike sags *usually* is going to make for *longer* chainstays

Now, lets get into the details....The amount the rear center changes is going to vary by brand/model/travel but with respect to a ~140mm bike its usually about 2-5mm back and 5-10mm forward. However, in most circumstances, the rear center is going to feel relatively static. Why? Because the real growth "forward" is only felt in the last 30% of the travel. From 0-70% the bike's rear center feels very much the same. This is where 98% of your riding takes place. You aren't feeling a few mms either direction. If it was really notable, we'd all be riding designs that minimize rear center changes (and we'd all be faster because of it), but we don't, because like I said, - under most riding conditions its going to be very close in length to whatever the static length was/is. A few mms simply isn't material.


2) Go ahead and search in the Vital archives. I started a very comprehensive thread about the qualitative reasons longer chainstays are often better. These qualities are some of the reasons rear centers have grown, especially on bikes aimed at going as fast as possible down a mountain. It has a lot more to do with balancing the rider's position between two wheels. I can back this up objectively, too.

This product_review has 19 comments.

Added a comment about product review Kona Honzo ESD Review 10/19/2021 8:24 PM
jeff.brines

No.

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This product_review has 19 comments.

Liked a comment on the item Canyon Stoic 4 Hardtail Long-Term Review 10/18/2021 7:01 PM

1. it certainly is "a thing" - calling all trail builders? b. with that said, let me clarify what i mean about tracking up lips and landings. this consideration is for rhythm/dirt jump lines or pumptracks that are manicured and, as mentioned, SOFT. bigger knobs will track up lips and...more

Liked a comment on the item Canyon Stoic 4 Hardtail Long-Term Review 10/18/2021 7:00 PM

Agree with Spomer on this. In the same way that mud spikes are known to squirm on rocks and roots, Magic Mary’s can squirm and fold on a super hard-packed trail, especially if you’re hitting a berm, steep lip, or banked lip with additional g-forces. It’s the opposite of traction- it’s...more

Added reply in a thread Rampage 2021 10/16/2021 5:05 AM

Tom's injury list reads like something out of war or a head on collision at highway speeds. He's one tough dude, and I wish him the best. Rant forthcoming... I watched that crash live (I feared the wrost), saw the injury update on pinkbike, have read ... more »

Added reply in a thread Rampage 2021 10/15/2021 12:02 PM

This feels like mountain biking's version of squid game. I hate seeing so many slams.

Added reply in a thread Rampage 2021 10/15/2021 5:47 AM

Yet again, we have athletes diagnosing their own concussions (more or less). When I was advocating for some kind of baseline testing (on the Inside Line), this is why I was advocating for it. You can have a mild concussion which is nearly impossible ... more »

Added a comment about product review Tested - 2022 Specialized Stumpjumper EVO Alloy Elite 10/13/2021 6:08 AM
jeff.brines

Nice review. I'd love to throw a leg over one. Prior iterations of this bike had great handling characteristics with not-so-great bump eating performance. I could never put my finger on exactly why this was (on paper it should have been good).

Regardless, I'd buy one of these as my do-everything bike if money were no object (or I just keep making bad financial decisions).

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This product_review has 20 comments.