This week saw the release of the new
RockShox Flight Attendant XC suspension system, which can automatically switch the fork and shock between three compression damping modes depending on the terrain, rider power output and rider preference. The system costs a minimum of $2,198 for the fork and shock, and importantly for a product aimed at XC racers, carries a 220g weight penalty.
This got me thinking, how valuable is a lockout in the first place? Measuring the effect of stiffer suspension in a sprint is difficult because some of the energy that is wasted through the suspension bobbing up and down is separate to the energy that goes into turning the cranks around, so a power meter doesn't tell you how much energy a cyclist is expending while sprinting out the saddle. For this reason, it's not straightforward to say how many watts a lockout will save you in a sprint. Nevertheless, it's undoubtedly a worthwhile advantage for professional cross-country racers, especially considering races often come down to a tight sprint finish.
But for the rest of us, a climb switch is more about making a bike feel more upright and comfortable for a long draggy climb. If you want to get to the top of the next descent as quickly as possible while feeling as fresh as possible, a climb switch could help a little - although
the margins are probably slim.
With modern seat angles and suspension designs, any advantage is usually modest, but in my view, you might as well take all the help you can get. The main downside of using a lockout is the risk that you'll forget to unlock it on the next descent and wonder why all your fillings are falling out. An even more depressing outcome for me is leaving the shock locked and
not noticing.
How much do you use the old cheater switch?
But a lot of my riding is winching up fire roads, so the lock out is noticeable.
Also agree that if a bike has decent geo (nice steep seat angle) and is fairy efficient, you don’t need it. Often a lockout is only needed as a sticking plaster for poor frame design…
I do know this though, a hardtail generally climbs better than a FS bike outside rocky tech and a FS feels better on the descents, a lockout gives you damn near the best of both worlds.
I did the same with my Megatower or Capra.
At least I don’t see how anyone could be troubled by having a climb switch
Also in areas with undulating terrain I find bikes with more efficient suspension designs (like DW) work better for me. (As well as a bit less travel, which also reduces need for the lockout)
Ok, this one got a real giggle out of me.
Yes, a giggle, I'm not ashamed to admit it.
education.nationalgeographic.org/resource/great-pacific-garbage-patch
I also forget to unlock mine most of the time, but that’s on me.
Disclaimer before people get triggered: I also fall into that category.
It’s second nature to flip the climb switch for climbs and toggle back for descents….
I guess if you never use it, that’s the habit you’ve formed. I’ve always used mine and I’d be reaching for it even if I didn’t have one.
90% of the climbing I do is on singletrack. I want traction, so the shock stays open. If I want to reduce my traction, I ride my HT.
Most of my riding is just death marches up logging roads to ride down single track so I actually really like using one, it’s not that often that I would forget to flip it back to open as I would sit there at the top of the trail gasping for air and chugging water laying on the ground for 10 minutes recovering lol
It has it's uses but I wouldn't use it on any technical climbs. More watts are saved by the rear wheel tracking the ground than skipping and spinning off every root and rock when locked out.
Imagine it this way: You lock the shock on the start of the climb,and when you start the descent it opens itself on the first big hit or compression (adjustable threshold would be a plus).
This shouldn't be that hard to engineer but somehow not one single manufacturer has come with this solution.
I would love to see the correlation between how often someone uses the climb switch and how often they stand while climbing - or even how much they like climbing. I love climbing, technical or otherwise, and I use my lockout remote about half as often as I use my shifter, on every kind of terrain, from smooth fire roads to Sedona.
I don't think it's about power or speed - I think it's about pedal stability while standing and cranking on the bars, and it makes climbing more satisfying regardless of whether you save watts or seconds doing it. What a dropper post is to descents, a remote lockout is to climbs... for me, anyway.
If people's primary complaint about climb switches is "I forget to turn it off", that's just a symptom of them not using it much in the first place. That's not a problem with climb switches.
I do enjoy going somewhere new where I can do a large circular ride where you’re tested on climbs and descents along with not hit the same section of trail twice but it’s just not the case unless I travel more than an hour and a half to those trails.
I do not see benefits of climb switch for the uphill.
I have similar switch on the vehicle so depending on freeway/washboard I flip the switch.
I do gee with electronic use within suspension much more practical then in SHIFTING OR DROPPER
On a serious note. Unless you remove the chain. It won't be exact 0. There's still force transfer through it. But that low power number feels way more tiring than actually pedaling a bike normally for that wattage.
I don't own one nor have i looked very far into the matter but i would have thought pedal/crank based ones would work for this (although it might confuse the software to pick up force through both sides simultaneously, idk)
Someone please test this
As you press straight down on both cranks at the same time when cranks are parallel. There are force going downward. Those can create torque on each crank arm but they cancel each other out. Thus no spin and therefore no rotation speed (rpm).
Pedal based sensor certainly can feel this force. But it won't add that towards the power number. It'll just record that you have very bad torque effectiveness.
What if you made a crank based power meter that read force into your power number.
If you stand still on the pedals, there would be force acting on the pedal all the time by your weight, right? Does that mean you put power through the crank all the time even when you stand still?
No. Right? Because that'd become a useless measurement instead of representing how hard you work.
Therefore, Power meter measure what it does which is effective power that propel the bike. By design.
In motorsports rear suspension is used even on flat track dirt bikes and street bikes because even on a very smooth surface suspension gets you traction, and traction equals speed.
There are even many more strain gauges on the pedal to cancel out "ineffective" force from the power calculation as well. Because you wouldn't want the force that push the pedal side way to register as power, for example.
I find climbing with it open way better for technical climbs as there is a lot more traction.
I had a hardtail for a while recently and on pavement it was kind of "bouncy". Maybe I suck at pedaling, but I like the way a FS bike pedals in comparison, as long as the geo is good
The sweep adjust on my fork works great, I change that up a few times every ride. The full lock helps on smooth climbs, especially when I stand up to pedal.
I don't notice myself any faster with it locked than not. On my DHX2 I'll use the switch if I want the bike to behave firmer (both up and down). Someone has to explain to me how you stand up : the bike sags : somehow wais energy (I don't get it)
Try this: lower shock pressure until both front and rear nearly bottom out when you're in a 5s max power test with no lockout. This will maximize the power draw, if it exists. Test from a standing start for 5s all-out, no shifting.
Then add pressure so sag is normal, lock out front and rear, and do the same test in the same exact spot. Really try to break something when sprinting for both tests.
Go look at your data and see what your top speed is for each configuration. Maybe do several tests with each config, eliminate fastest and slowest from each sample set, then average the results and compare averages.
I’ve ridden the same climbs shock open and closed at the same normalized power-and open is faster.
Every time the rear wheel slips for even a split second it costs in both power AND speed.
In “real world” conditions, there may be one sprint for position at the start of an XC race, but even there traction is king.
Even with a tidy pedal stroke and correct tire pressure, the rear tire will slip more without rear suspension (lockout or hardtail).
I used to have a DT Swiss fork that allowed lockout but then had a blowout switch for when you forgot to open it up again. That was good, one big hit and the fork free.
Not sure it made a difference to my riding really. I didn’t miss it when I replaced the fork and I never lock my fork out now. I get into the rhythm of the bob.
On the xc bike (tallboy).. hardly ever as it's not got lots of travel anyway
On the all mountain (nomad)... All the time, the rear isn't over sprung so the switch is good thing, it's only really a compression adjuster so often somewhere in the middle to suit the climb
On the eeb (Orbea)... Every climb, it's a 160mm bike too so benefits from the additional support on the climbs.
On the DH bike. Haha. Push up, fly down. DH bikes are incredible machines.
The way I understand it, a 'climb switch' is a post-feature, meaning it's a feature that controls a primary function, in this case it sharply increases the shock's low-speed compression damping. Am I correct? if so, what would you thinks is the added value Vs the added complexity / maintenance?
Your thoughts and any suggestions are much appreciated!
cheers
A smooth pedal action and not bobbing your shoulders up and down is all I need and I see very little pedal bob in the linkage.
All the lockout switch does is make my the big bike uncomfortable on the climbs.
I don't even run a super weird setup, maybe sag a tad on the high side with slightly less rebound damping and more compression, but even with a stock-ish setup it just does not feel good.
I can go on and on about the bikes, but the axle path is as rearward or better than DW-Link bikes. With that much chain growth, the rear end is sensitive enough to "bend your brain", even with an air shock. Your legs and feet tell you that you're pedaling a hardtail, your eyes see trail chatter and/or small bumps, but you don't feel them through your feet. Your senses don't agree, so your brain feels weird for a bit. The feeling goes away once your brain acclimatizes. Colin Ryan felt his brain bend when he tried them in 2023. Traction is incredible because of the suspension's sensitivity. You loose that with the climb switch.
That’s why motorcycles don’t have lockouts (and hardtails aren’t used even for flat events like oval dirt track races).
And in season I’m at single digit body fat. Your point??
My mind is open, fast rebound. My shock is locked.
I use it on my stumpjumper evo and it helps suspension bob a lot. No shame, and I don't think that makes anyone a cheater.
But really, only use it when the bike is on the trainer. Neither option was available above...
I don’t like the way the bike(s) feels locked out.
Coil shock: every time the trail even thinks about going up hill.