New posts

Varaxis's comments

13 comments found

Pitching Forward: The Impact of Steep Seat Tubes - March 29, 2021, 1:54 p.m.

I noticed this too on my Grim Donut experiment (83° STA). Since the saddle is more forward and higher up:

- could bump into the saddle when hammering out of the saddle on flat ground. Not a problem on a climb.

- couldn't stand in front of the saddle at a stop sign/light, and also have a foot on the pedal.

- a bit more inconvenient to mount the bike. I would rely on using the pedal to get on the bike, rather than mount in one fluid movement like a CX racer would.

A dropper post remedied all these issues. It's a must, preferably with enough travel to allow the rider to place feet on the ground while still sitting on the saddle.

Pitching Forward: The Impact of Steep Seat Tubes - March 28, 2021, 11:21 p.m.

There's a correlation between short WB and slack effective STA. 

Should measure the horizontal distance the saddle is behind the BB to calculate the effective STA. Some TT bikes have multiple seat positions, forward for aero bars and rear for normal road.

I suspect some prefer slack STA 'cause they have a large fitness base from training on slack STA, which doesn't fully transfer over to a steep STA position. Neglected muscle groups being recruited due to the new position makes them feel weak too.

I say F incremental STA steepening. I've tried 83° on my Grim Donut experiment. I believe that there's room for it to get that steep. My sitting position being similar to my standing position was a bonus, as well as having similar susp sag for both standing and sitting.

The Full Moxie Has Landed - April 8, 2020, 8:37 p.m.

Checked the site to find that their published price includes VAT. 1457 GBP is not bad compared to Privateer 161, which is 1399 GBP with a RS SuperDeluxe. I dunno, compared to a Canfield Balance/One for a US customer looking for better quality than Marino...

2020 Norco Sight – Build Your Ride - March 14, 2020, 8:42 a.m.

Excuse me for being kind of new around here, but I just was shocked that no one mentioned how impressive the photos are. The lighting looks so good, considering the setting. Is this quality level the norm here, that people expect it or something?

Suspension Analysis - Yeti SB150 - Feb. 28, 2020, 12:45 p.m.

I have a single pivot like the Starling.

Very linear is accurate. Can get it to be somewhat progressive if the forward shock mount was lower, such as if you ran a shorter length shock to fit better, but it's so slight that it don't matter. If it were mounted to the top tube, it'd be somewhat regressive, but it'd be more accurate to call it linear still.

You don't need progressivity to stop it from blowing through its travel. You want progressivity if you want it to blow through travel, such as wanting it to be plush running a lot of sag. I see no problem running coil, but going to need a firmer/racier spring rate, which gets chassis stability (geo retention) and efficiency over cushiness.

It has an imperceptibly similar level of pedal feedback compared to a majority of other susp like this Yeti. The Yeti, and some VPP, have a slightly difference in that it drops off harsh pedal feedback for the last 30% of travel. I suppose this little bit matters when you're after fractions of a second to win races.

It preserves geometry under braking, meaning it better balances out the forward rotation that causes the fork to dive, just like the Yeti. In other words, it more completely cancels out brake jack, which is the tendency for the rear end to extend under braking (hence why it's called anti-rise, or brake squat).

Single pivots have a more rearward axle path. They can be more precise, suffering from less torsion and tail wag (fewer pivots, less play, between pivot and rear axle). They're more hardcore than horst links. GG argued there was no benefit with Horst Link, and that they could simply mimic their single pivot kinematics with it. There's a world of difference between a Knolly 4x4 (or Liteville horst link) and a GG horst link. Not so much difference between GG's horst link, Switch Infinity, and Starling single pivot.

Tantrum Missing Link is one of the few innovative linkage designs. It happens to be regressive and needs a progressive shock (DVO Topaz is a good choice), but it's the only one that stands out from the crowd. In contrast, the vast majority behave similarly. Not much difference among single pivots like Trek, Evil, Marin, Cotic, etc. and 4 bars like CBF, VPP, etc.

The draw to the Starling design is its chassis stiffnesss characteristics. It has a forgiving springiness. It's carries its weight really well--the steel frame does a lot to negate pedal feedback.

Standard Issues - March 12, 2018, 2:34 p.m.

I support this kind of research. Show us the wisdom of measuring the hypotenuse (of stack and reach, and I guess stem length and bar width) and how it figures into leverage.

Last time I looked into applying actual geometry logic to bikes, I only ended up asking why there needed to be a seat tube in the first place. shrug

Washington State Bans E-Bikes on Trails - March 12, 2018, 2:02 p.m.

Laws exist to protect the egos of the groups holding most power. Groups form to address insecurity. Insecurity is often driven by hopelessness and fear of loss. Fear of loss includes the loss of your beliefs. Hopelessness comes from the lack of power.

The more you show power, perhaps through reason, the more you strengthen these groups and the more they realize their own power as a group. Even if their belief is proven to be a lie, they are given purpose and see you as an enemy.

Sometimes showing that they have something greater to lose, they may see you still as an enemy, but will accept a lose-lose situation just to spite you as an enemy, to satisfy their ego.

IMO, just vote with your money. In the end, that's the power that counts most. Do what you usually do when you can't stand the issues with sharing: buy your own. Pool together money to buy land, dictating things that allow you to practice your own freedom.

Camelbak, Bell and Giro Caught in Assault Weapon Backlash - March 11, 2018, 1:17 a.m.

Respect for the feature-in-work. Good to have the foresight to have tools and a strategy plan to deal with chance problems, which further deter the problems.

Do you Canadians see yourselves as "normal" with typical assholes and nice guys and other countries as having many assholes? I hear stories of tourists saying you're all so polite. It's a relative thing... makes me want to research mass murders in Canada and why gun culture works in other countries, like Switzerland.

Here's a concept regarding band-aid fixes and why they're bad:

Washington State Bans E-Bikes on Trails - March 11, 2018, 1:02 a.m.

Clickbait working, based on all the comments. Don't normally see so many comments, some scored +/- 8. With all these controversial topics, the gossipy types are coming out and it's making NSMB look more tabloid-like.

Washington State Bans E-Bikes on Trails - March 11, 2018, 12:43 a.m.

Laws regarding riding bicycles on the sidewalk are so whack all around the world. No real standard. Allowed on crowded Los Angeles and Japanese city sidewalks, not allowed on sidewalks in other areas. *shrug*

Washington State Bans E-Bikes on Trails - March 11, 2018, 12:07 a.m.

From the bill: "Generally, a person may not operate an electric-assisted bicycle on a trail that is designated as nonmotorized and that has a natural surface, unless otherwise authorized by the state agency or local authority having jurisdiction over the trail."

Without making assumptions, please give me an example of a trail that's designated as nonmotorized. I'm under the impression that natural surface trails aren't designated as nonmotorized by default, and must be declared so specifically and formally.

> In New York City e-bikes are banned entirely with police confiscating bikes and handing out $500 fines, despite it being legal to own an e-bike in New York State.

NY State law classifies self-propelled e-bikes as "motorized scooters". Pedal assist bikes are fine. See story from NYC ebiker.

Camelbak, Bell and Giro Caught in Assault Weapon Backlash - March 3, 2018, 3:09 p.m.

Knives are the weapon of choice for mass murder outside of the US. Google search on the topic will give plenty of examples, such as Japanese school massacres or a German stabbing spree where there was a HIV-positive scare.  

Focus on the process, instead of only the problem. Culture is a part of the root of the problem that can be addressed. Is there something closer to the root of the problem? 

US culture: heavy judgment, social outcasting, and incarceration. Suicide prevention that assumes people are mentally ill who need personal fixing. "Thoughts and prayers" as sympathy. Heck, just being smelly is borderline terrorism to people, with people preferring to outcast them rather than offer a solution that allows integration. Victims of such treatment lose hope and have breakdowns. They have strong feelings yet have no way to act them out. If they lay a hand on an oppressor, they can lose their way of life, so they suppress it until it grows too big to hold back. Evil thoughts are frighteningly common, due to all the pent up frustration. Outlets such as "rage rooms" are questionable in effectiveness, as is sport shooting.

There's many changes we can make to culture that subtly affects people to mitigate problems down the line. For example, simply having anonymous voting buttons on these posts is questionable, since it makes judgment seem commonplace and tolerated. If people are given power, they need to be held accountable for their use. Me having a word in this matter is held accountable by my ID/profile. If I am to upvote/downvote, I would prefer if it were tagged with my ID, and have a full history of my voting habits displayed in my profile, and have my upvotes/downvotes decrease in value in certain circumstances, to limit the damage/impact I can do with them in case of corruption. This system will encourage me to self-police myself to uphold a consistent ethical standard. 

The fix could be summed up as simply being tolerant, yet being intolerant of intolerance (famous paradox). Intolerance of guns and brands associated with them etc. is questionable. Money going to Camelbak, Bell, Giro, etc. isn't proven to go towards supporting sport shooting. There's other options out there for those seeking to be mass murderers, such as explosives. Need to divert focus to the problem of intolerance and help re-integrate people into being productive fulfilling citizens of Earth. We just need to get along with each other and stop drawing lines to segregate yourself from others, based on fears and narrow-minded beliefs.

Stiffer Isn't The Solution - Feb. 23, 2018, 1:51 p.m.

When it comes to increasing the strength of the bike, stiffness is the answer. Materials can only withstand so much stress before they yield and no longer return to their original form. The problem is determining how much stiffness is appropriate, as too much leads to a poor experience.

The holy grail is holistic design. A complete bike designed as a system which is optimized for a certain rider, riding style, and terrain. Ideally, riders wouldn't feel a desire to change big things out. If stiffness was properly tuned as a whole, a rider shouldn't consider swapping a Fox Float 34 with a 36, citing that the flexy fork is holding back the stiff frame. The opposite shouldn't be felt either, going weight weenie since some parts feel like overkill and make the bike feel sluggish. 

Categorizing bikes based on travel, geo, and/or other simple parameters should be eliminated. One clyde's XC bike for forest riding could be considered one lightweight guy's aggressive trail bike for hard rocky terrain. Maybe they just have to advertise this relative stiffness, or its duty level (between heavy duty or light duty), between bike models. One bike might be a moderate duty 160mm long legged all-rounder bike (e.g. Marin Wolf Ridge), while another bike could be a heavy duty 140mm hard hitting speed demon 29er Enduro race machine (e.g. SB55); categorizing doesn't show the bikes for what they are individually. People don't have time/attention span to read wordy reviews, and these end up being bunched into the same category at first glance and prematurely judged based on narrow-minded bias (e.g. believing 160mm travel is overkill or that 160mm bikes demand to be ridden like FR/DH bikes). The closer I examine the bikes, the harder it should be to group bikes together--I can't say a Radon Swoop fits into the same category as a Marin Wolf Ridge just by looking at it on paper (inc. reviews and linkage analysis). I can only confirm it if I ride them back to back, but I can make a solid prediction if I had more context such as riding many other Radon bikes, a Polygon with the same susp as the Marin, and bikes with the same spec.

Having shoot-outs between bikes optimized for different things is quite a demand. Between an all-rounder Orbea Rallon vs gravity-oriented Evil Wreckoning, the bike that wins is the one that suits the rider, their riding style, and terrain best. A beginner looking to overcome their DH fears, someone with all-around skills looking to replace a quiver, a DH junkie that wants to session local trails... we all know this, but how do we get a personalized answer? Should we expect a bike shop salesman to figure this out, instead of trying to move what's in stock?

13 comments found

Forum jump: