fuckin' nerds..
Let me tell you about a foes dhs........
fuckin' nerds..
Canyon had something like that for Troy... I don't think it ever went anywhere tho...wasn't there a racer (I want to say Gee), who had a spacer in place of a cog on his cassette so he could shift into a "gear" that didn't engage the freehub? As I recall, it was a one-off, maybe in the last 2 years or so?
sounds like we need to improve on it somehow . . . DERAILLEUR ELASTOMERS, ANYONE?i don't know, all this debating on the technical prowess of the derailleur spring has me kinda intrigued..
yeah, someone had cassette with a "missing" cog that they could shift in and out of...wasn't there a racer (I want to say Gee), who had a spacer in place of a cog on his cassette so he could shift into a "gear" that didn't engage the freehub? As I recall, it was a one-off, maybe in the last 2 years or so?
Aaron Chase did that on his Cannondale, but for different reasons (mostly fakies and shit).there
yeah, someone had cassette with a "missing" cog that they could shift in and out of...
brosnan, no?there
yeah, someone had cassette with a "missing" cog that they could shift in and out of...
Nope, because the derailuer is still dishing chain out to chain growth.Wow canyon must have believed my singularly held mythology.
Suckers.
Grab a beer.Nope, because the derailuer is still dishing chain out to chain growth.
But kickback thats "faster" than your traveling speed is ceartainly removed.
That's the one I was thinking of!View attachment 141251
That was from:
Tech Randoms: Les Gets World Cup DH 2019 - Pinkbike
It was a busy day for mechanics as they worked to rebuild bikes in preparation for another round of wild DH racing.www.pinkbike.com
I see what you did there. Touche.I don't think it ever went anywhere tho...
Chain wrap around a cassette doesn't really work that way. Unless you're putting derailleurs on full suspension fixies.
Which I wouldn't put past you.
You ever bounce the back wheel of a suspension bike on the floor of your garage and see the cranks get pulled backwards? Ever notice that's not what happens when coasting downhill with you on it?
I'm not saying what's being taken up by the derailleur is huge, but it's not nothing. Some bikes more pronounced than others obviously. And since it relies on the singular rotation direction of a freewheel hub, it's not exactly 1:1. And clutch derailleurs only provide significant friction in one direction.
Looks like you need an ebike.Imagine how fast bikes would be if we got ride of all the energy absorbing devices that moved with the suspension?
Now you've said too much.Imagine how fast bikes would be if we got ride of all the energy absorbing devices that moved with the suspension?
No shit. Last time I put any thought into this was never. It seems like around here it's not about riding your bike anymore, but anal-izing the back pressure of a derailleur on your high speed rebound and the extra 4.1% of pressure it takes to engage brakes.fuckin' nerds..
Go tell me, I still have mine. I'm all ears.Let me tell you about a foes dhs........
Woo is snowed in. Clearly not riding. Take anything w/ a grain of salt.No shit. Last time I put any thought into this was never. It seems like around here it's not about riding your bike anymore, but anal-izing the back pressure of a derailleur on your high speed rebound and the extra 4.1% of pressure it takes to engage brakes.
Do you guys even ride bra's?
If you need to know how bad it's gotten, he's agreeing with @manhattanprjkt83 !Woo is snowed in. Clearly not riding. Take anything w/ a grain of salt.
I rely very heavily on those energy absorbing components these days. It's rough out there!Imagine how fast bikes would be if we got ride of all the energy absorbing devices that moved with the suspension?
Rode for 3 hours sunday. Our winter is sucking. Not like that matters.Woo is snowed in. Clearly not riding. Take anything w/ a grain of salt.
FTFYImagine how fast bikes would be if we got rid of all the energy absorbing fat that moved with our body?
I dont really drink.... anything thats not water infused with roasted arabica beans, grap a coffee and try to explain to me in ultra graphic detail what the hell your talking about lol.Grab a beer.
Relax.
Pedal kickback while coasting is a myth and this can be calculated:
• Take the circumference of the wheel.
• Calculate the maximum pedal kickback in any given sprocket combination, in degrees.
• Multiply (kickback / 360°) × circumference. This is how much the wheel would have to rotate to negate all kickback.
• Take the speed you usually travel while using the sprocket combination from the previous calculation.
• Calculate how long it would take you to travel the distance from the previous calculation. This is the maximum allowable time in which to fully - from top-out to bottom-out - compress your shock for any pedal kickback to occur, let alone enough kickback to be a problem.
• Divide you shock's stroke by this time you just calculated. That's the shaft velocity of the slowest possible impact that will produce any kickback. You will find this shaft velocity is unrealistic. If your shock goes from top-out to bottom-out in 0.03 seconds, for example, you have bigger problems than a little kickback.
But wait, there's more!
This calculation didn't even account for any delay in the engagement of your hub's driver. If the average engagement is, say, 10°, then the average amount of engagement is 5°. This takes 5°×(rear/front sprocket) off the average possible amount of kickback in a full travel impact, making the situation even less likely to produce any kickback, let alone problematic kickback.
Similarly, it's essentially a myth that the derailleur clutch can interfere with suspension. I'll be more brief this time:
1. The clutch doesn't move immediately and often doesn't move at all.
2. If the clutch does move, the clutch breakaway occurs after the suspension starts to move, so it doesn't contribute to "breakaway" force.
3. If the clutch does move, the static friction does hamper suspension performance, but the force is so small, relative to everything else happening in an impact event.
4. Once the clutch is in motion, the dynamic friction and spring force simply add to the spring and damper forces of the suspension.
5. The motion of the clutch is so small. Work = force × distance. The force is small: you can easily move it with one finger; think of how small that is, compared to the impact. The distance is small: the clutch rotates only a few degrees. Thus, the work to overcome is it virtually nothing.
Mixed feelings about that!Rode for 3 hours sunday. Our winter is sucking. Not like that matters.
I thought the idea was getting an idler like suspension feel where your chain tension doesn't influence how your susp works? Or am I wrong? Because I know some people who praise not feeling your chain, those people ride specialized's...Just take your shock off and hold your pedal while cycling the suspension. Its not complicated. Chain kickback doesn't happen on any suspension design work a damn because the derailleur unwinds.
Idler bikes still have some chain growth. Otherwise they'd have no anti-squat and pedal like concentric bikes.I thought the idea was getting an idler like suspension feel where your chain tension doesn't influence how your susp works? Or am I wrong? Because I know some people who praise not feeling your chain, those people ride specialized's...
Confirmed everything I thought.
It's true. Steve wakes up at 2pmConfirmed everything I thought.
All of which you would have seen personally if you'd done what I said in a bike standTake aways: Use the lightest and shortest chain (this means use the smallest cassette you can). Use a top and bottom guide with the clutch turned off. Be in a tall gear.