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DirtGuru2 jessiemaymorgan's article
Apr 27, 2024 at 18:38
Apr 27, 2024
Pinkbike Poll: Riser Bar or Extra Spacers Under the Stem?
Why is it assumed there are only 2 ways to skin this cat? Few things look more dorky than a 25-40mm stack of spacers... especially under a zero rise stem. And few things invite more flex and creak into the main control point of the bike. All of that leverage, bending and twisting force has to go somewhere, and is definitely doing something to that puny 1-1/8" aluminum tube/standoff sticking above the upper headset bearing. High rise bars are only slightly less dorky. And somewhat less flexy, depending upon how they are (over)built. And if you're trying to save weight, then all of that extra steerer tube length, extra spacers, and extra carbon bar layup adds up to something as significant as anywhere else you're trying to save weight. Every bit adds up. But back to my point... What's the actual goal here? It's final hand position, and it's proper (for you) relationship to the bike's geometry, and how the bike fits you. I've found the best solution and sweet spot is actually the most direct path to get your hands where they need to be, and to not have any one of the THREE variables trying to make up all of the distance that's required to get your hands where they need to be. For my very average 5'-10" self, depending on the bike, that's 15mm-25mm of bar rise, 17° stem rise, and only 10mm of spacer - which is just enough to give some height adjustment either way. The result is super clean and purposeful looking, spreading a portion of the total needed rise between spacer, stem rise, and bar rise. It's also the lightest possible approach. I even have a few friends who are 6'-4", and have always struggled with handlebar choice, and bike fit and setup in general. So I convinced them to let me create the ideal setup for them. Both are riding XL bikes with similar ~505mm reach. What I came up with was 38° rise S-Works DH Carbon bars, a 25° rise stem (with longer reach than the 40mm-50mm we've been convinced we must use), and a 10mm spacer. The results were a revelation for both of them, and the first time the felt like their bike setup wasn't a big compromise. So, why have we as a biking community allowed ourselves to be sold on 0° or 6° stem rise, and having to make up all of the rise distance that we need elsewhere?
Added 8 photos to Buysell
Dec 31, 2023 at 13:42
Dec 31, 2023
Selling
Dec 31, 2023 at 13:35
Dec 31, 2023

Garbaruk 34t Oval Chain Ring Chainring Cinch Boost

$69 USD
Here's a sweet, fresh new Garbaruk 34t Oval ( Melon ) Chain Ring for Cinch, Boost 3mm Offset. If you haven't used Garbaruk products before, they are exquisitely crafted jewelry, while being strong and durable. CNC machined from 7075-T6 aluminum. I bought this for a project that never got off the ground. This is direct mount for Race Face Cinch / Easton cranks. Brand new, fresh, in original packaging, never mounted. Weighs only 62g $4 shipping to lower 48, or local pickup in San Clemente California. narrow wide drop stop

Selling
Dec 31, 2023 at 13:31
Dec 31, 2023

Garbaruk 32t Oval Chain Ring Chainring Cinch Boost

$69 USD
Here's a sweet, fresh new Garbaruk 32t Oval ( Melon ) Chain Ring for Cinch, Boost 3mm Offset. If you haven't used Garbaruk products before, they are exquisitely crafted jewelry, while being strong and durable. CNC machined from 7075-T6 aluminum. I bought this for a project that never got off the ground. This is direct mount for Race Face Cinch / Easton cranks. Brand new, fresh, in original packaging, never mounted. Weighs only 57g $4 shipping to lower 48, or local pickup in San Clemente California. narrow wide drop stop

Added 5 photos to Buysell
Dec 31, 2023 at 13:08
Dec 31, 2023
Selling
Dec 31, 2023 at 13:04
Dec 31, 2023

Wolf Tooth 32t Chain Ring Chainring Shimano 12 S Cinch

$69 USD
Here's a sweet, fresh new Wolf Tooth Drop Stop 32t Shimano HG+ 12 Speed Cinch Boost 3mm Offset chainring. I bought this for a project that never got off the ground. This is direct mount for Race Face Cinch / Easton cranks. Brand new, fresh, in original packaging, never mounted. Weighs only 60g $4 shipping to lower 48, or local pickup in San Clemente California. narrow wide drop stop

DirtGuru2 mikekazimer's article
Dec 19, 2023 at 0:24
Dec 19, 2023
Mike Kazimer's 2024 Predictions
Kaz dropped a big clue, and few of you picked up on it. The Scott Ransom (still) makes a killer starting point for a super capable-yet lightweight bike. That's not fragile. If Brendog isn't breaking them, chances are you won't be. The current frame is the same as Kaz's 2019. It's mullet ready with the flip chip. But when Scott decides to update the Ransom and go "integrated" like they've done on the Genius and Spark, the lightweight days will be over. I've built up a best of everything dream machine starting with a 2020 Euro model Ransom LTD HMX frameset, and every single nut, bolt, lever, saddle was a carefully chosen balance of performance, weight and durability. The final weight tally? 27.6 lbs, which is ridiculous for a bike that slays it so well. I've stopped riding every other bike in the quiver, because this much capacity for rowdy, at that little weight, makes it a super manageable trail bike too. You can whine about the slightly slack seat tube angle and taller than the latest trend seat tube, yet there was plenty of adjustment in the saddle rails for me, plus I'm running a 180mm dropper with room for 200.
DirtGuru2 seb-stott's article
Dec 10, 2023 at 8:15
Dec 10, 2023
Opinion: Do We Need Size-Specific Chainstays?
@ponyboy24: I'm actually fully attuned to the effects of this. For the extra 10-15mm of actual effective stem reach that we're talking about, I'm suggesting that taller riders should be including this variable within their experiments to create the best possible front to rear weight bias, rather than giving it all to longer chainstays. Also, at which point, and measured within which plane is this "in front of the axle" happening? Have you considered that your handlebar sweep (creating your actual hand position) erases all of this? Even on one of my bikes with a 60mm x 17° stem (equals zero spacers), my bar sweep brings my hands back slightly behind the wheel axle (figuring for the forward axle offset), and approximately equal to the steering axis. You could have an absurd theoretical 150mm stem, and as long as the equally absurd handlebar sweep brings your hands back to their ideal position... Bottom line, for taller riders, stem rise and reach should be one of the variables in play, rather than short or shorter stems being a religion that cannot be questioned
DirtGuru2 seb-stott's article
Dec 9, 2023 at 17:29
Dec 9, 2023
Opinion: Do We Need Size-Specific Chainstays?
Seems like this debate could be mostly distilled down to solving this challenge: Creating a properly balanced fit and weight bias for taller riders. Which the rider will then decide if they want to... bias (slightly compromise) their particular setup towards either climbing or descending. And it seems like - with rare exception - the only part of the available arsenal that gets thrown at this problem is more reach, and more chainstay length. And occasionally seat tube angle. but that debate seems to have settled down into the 76° - 78° range, with plenty of available fore and aft adjustment for most anybody. So this current debate seems to dictate that we create the supposedly ideal (theoretical) proper bike fit for a 6'-5" (195.58cm) rider, by only using more reach and chainstay length. And by following these supposed ideals, you could quickly end up with 520+ reach and 450+ of chainstay length. Without my geometry calculator handy, and with today's slack head angles that's gotta be ~1300mm or more of wheelbase. Now you've got a bike that handles like a 70's station wagon on anything that isn't plowing straight down the hill. Yet, why is it blindly assumed that the best stem choice for EVERY rider is 40-50mm? And don't get me started on the 6'5" guy who thinks that the latest 35mm stem is a performance upgrade. And for some reason it's also blindly accepted for many taller riders to automatically go with a stem in 0° (maybe 6°) rise, often with 2"-3" of spacers under the stem. Does anyone ever consider how DORKY this looks?! Let alone how less-than-ideal this is. Does anyone ever consider how much flex might be happening in this extra steerer tube length - especially with a 6'-5" 220lb guy torquing on a set of 800mm bars? And extra useless weight with steerer tube and spacers? So the only direction we've been heading (we've been allowed to go) over the last handful of years since modern geometry has taken it's course, says that as the rider gets taller, his body mass can ONLY shift rearward, along with the upward that he has no control over - and this can only be addressed and compensated for with longer chainstay length. Consider this: For taller riders, as the handlebar height (which is actually hand position we're talking about) gets taller, through stack height (headtube length), stem spacers, and handlebar rise, did you ever think about how far rearward your hands, arms, and body mass are being pushed, further amplifying the effects of what this article is about? Did you ever think about the "normal" hand position that the average 5'-10" (178cm) guy or gal has on the average large bike, in vertical relation to the front axle? Think about how much further rearward a 6'-5" guy's hand position is once you get your stack, stem spacers and handlebars up to the altitude you want them. Which, along with their mega seat height, has their center of mass WAY BACK over the rear wheel. What if the real sweet spot for taller riders - along with modest (500-510mm?) reach, and maybe 10mm more chainstay length), might be in moving their body mass... not so far rearward, as dictated only by the seat tube angle and how high the seatpost is extended, but instead use a strategic amount of stem rise and reach, along with a similar amount of handlebar rise to get their hand position somewhat further forward. Thus allowing for easier control of weighting the front tire. So here's what I'm proposing. And trust me here... the world will not stop spinning on its axis if you go over the 50mm line on your stem length. Taller riders will have more than enough extra arm length to compensate for a bit more stem length. It's a non-issue. **A case study of sorts** I have two lifelong friends who are 6'-4" to 6'-5", 210-215lbs, who have always struggled with finding or creating a bike that fits them properly, feels right, climbs well, and inspires confidence. Modern reach numbers have gone a long way to help their situation. But they were still struggling to find something that truly felt like THEIR bike. So one of them asked for my help in creating the mythical/magical ideal bike for him, starting with a blank canvas (which doesn't mean a custom frame). In watching them ride their current bikes - both of them being Horst Link arrangements - the first thing I noticed was how deep into their rear travel they would run / wallow. The "chopper" effect was always there, extremely so with their height and rearward weight (shift). Don't get me wrong, BOTH of my bikes are Horst Link, and for certain riders and situations, they are awesome. 5'-10" 155lb me thinks so. Always balanced and active, predictable and plush. But you know the downsides that come with the uphills, and the Band-Aids that we have to accept with Horst Link bikes, be it the blue lever, or on my Scott Ransom the REAR ONLY Twin-Loc (which is actually VERY effective in controlling the wallow and raising the bottom bracket for climbs). But Horst Link bikes may not be the best choice for taller and heavier riders, because all of the leverage and weight shift that their height and weight generates... just doesn't work so well on such an active suspension design. I'm getting off track. But my point here is, maybe first choosing choose a rear suspension design that works better with your height and weight is the best starting point. For my friend, our starting point was the latest model Ibis Ripmo. An XL has a modest 500mm reach, and it's reputation as a magical do it all bike is earned and well deserved. What about the horrifically short 435mm chainstays? But a major key in my friend's equation is that a DW link design (at least Ibis' particular one) doesn't sit very deeply into it's travel, or at least doesn't respond so radically to the extra height and weight (shift). And it pedals and climbs like a raped ape. So fast forward... all of the relatively Gucci - yet robust enough to handle his size and weight - parts were carefully chosen, the bike was built. Yet the two most carefully considered parts were the stem and handlebars. The goal was the aforementioned strategic amount of stem rise and reach, along with a similar amount of handlebar rise to get his hand position somewhat further forward. While hopefully using zero stem spacers. For the stem we chose (oh, the horror...) a 25° x 80mm Profile Design Aris, which is forged, safe, beautifully crafted and relatively lightweight (around 140g with titanium bolts installed). That got him part way to the hand height he needed. For the other part, we chose a set of Specialized S-Works Carbon DH bars with 38mm rise, weighing a reasonably light 235g. We specifically chose 31.8mm. You may be thinking that this combo would look gangly and awkward. The 80mm reach NUMBER on the stem may remind you of the early days of MTB, and the 80-100mm tillers that we used to run. But, however they measure this 80mm appears to be NOT on the 0° plane, but along the 25° plane. They also have 60mm and 70mm, which look very normal ACTUAL reach, with some extra rise. So it looks remarkably natural, and along with the bars - in using both of their rise, reach and sweep to get the grips up to where the hands want them - looks remarkably correct... and actually ELEGANT. You have to see it to believe it, especially watching a 6'4" to 6'5" guy ride by. "Well yeah... how could it be any other way?" was my reaction Fast forward... as we're doing some final fitting and fiddling before the maiden voyage. Only a few experiments were made with the fore and aft position of the saddle, simply 5mm each way to try it, and a bit of handlebar roll for personal taste. The first test ride? It was an absolute revelation to my friend. Never before has he so instantly felt comfortable on a bike. Instantly felt properly centered (weight biased) between the wheels. The next few rides - after fine tuning suspension, saddle tilt etc - produced similar WOW! moments. To him, no bike has ever felt so automatically comfortable, confident, flowy, and connected directly to his brain. I've since done the same experiment with my other tall friend, this time starting with an XL Ibis Ripley V4. Same bars and stem, nearly identical components. The results were equally mind blowing for him. So rather than knocking it, or dismissing this out of hand, maybe give it a try. Are you less tall (6'-1" to 6'3"), or want to split the difference? Give a 17° FSA V Drive stem a try, in 60mm or 70mm reach.
DirtGuru2 dariodigiulio's article
Nov 9, 2023 at 10:00
Nov 9, 2023
Neko Mulally's Frameworks DH Bikes Now Available for Preorder
Definitely a cool project and a major accomplishment. Apart from being a micro boutique brand with a front triangle made in USA that we should love to support... From a performance - everything that matters when riding - perspective, why would you buy this over a Scott Gambler (aluminum or carbon), which is a super refined work of art, is mullet or 29 ready, with a lower shock flip chip?
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