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This is what's wrong with The Industry™

lobsterCT

Monkey
Jun 23, 2015
278
414
Well damn. Does this mean I should run 6061 bars instead of 7 series? At least those seem to bend rather than snap.
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,855
9,559
AK
Oh hell yeah, a bunch more moving parts and weight to hang off my bike, more cables, things are getting better by the minute!

I mean, if you absolutely hate single ring systems with decent range, hate the trigger-style dropper post levers, hate the newer simplified bikes, this seems like a good idea. Mostly, it seems like a question no one is seriously asking, although many claim they love the two ring setup, I never see any doofuses pedaling like mad at 90rpm bouncing up and down because they ran out of range. Err, I did see one yesterday go across the intersection on a fatbike, but he wasn't going that fast and just needed to shift to not look like a doofus. The huge tires filled with air really make you look like a doofus when you are spinning out.
 

4130biker

PM me about Tantrum Cycles!
May 24, 2007
3,884
448
if i ever built my own bike with a new suspension design, he'd probably be at the bottom of the list i wanted to ride my bike.
That reminds me... was it him that got a little test ride on the milyard shock? Where the hell is that thing?
 

chris_f

Monkey
Jun 20, 2007
390
409
It's going to take a lot more than some sort of freshening spray to repair that particular personality.
 

Tantrum Cycles

Turbo Monkey
Jun 29, 2016
1,143
503

Jm_

sled dog's bollocks
Jan 14, 2002
18,855
9,559
AK
funny quote "from tanks and landing gear, where shocks need to be absorbed reliably over and over". Say....once every XX hours of flight compared to a dirt bike......or baja truck......or rallye raid car....

Just takin the piss
There's a huge freaking lump in the middle of the Kotzebue runway, and let me tell you, the landing gear does NOT absorb it. State won't fix it, until the fuselage of an airplane is sliding down the runway AND the soda can't get delivered. When the flow of soda stops, they'll spend whatever it takes to get it fixed. Until then...it's rather "sporty"...
 

Tantrum Cycles

Turbo Monkey
Jun 29, 2016
1,143
503
There's a huge freaking lump in the middle of the Kotzebue runway, and let me tell you, the landing gear does NOT absorb it. State won't fix it, until the fuselage of an airplane is sliding down the runway AND the soda can't get delivered. When the flow of soda stops, they'll spend whatever it takes to get it fixed. Until then...it's rather "sporty"...
In a galaxy long ago and far away, in fact prehistoric (in terms of mountain bikes), I had brief experience with arresting cables systems on aircraft carriers.

THIS!!!..is how you absorb shock reliably over and over....except this one time....

check out the guy doing jump rope over 100 mph cable snap

 

Jm_

sled dog's bollocks
Jan 14, 2002
18,855
9,559
AK
In a galaxy long ago and far away, in fact prehistoric (in terms of mountain bikes), I had brief experience with arresting cables systems on aircraft carriers.

THIS!!!..is how you absorb shock reliably over and over....except this one time....

check out the guy doing jump rope over 100 mph cable snap

You obviously know what you are talking about, because you didn't describe it as "landing". When the airplane approaches the carrier, the airplane hits/crashes into the carrier. It doesn't land. Landing is what planes do at airports.
 
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slyfink

Turbo Monkey
Sep 16, 2008
9,289
5,029
Ottawa, Canada
In a galaxy long ago and far away, in fact prehistoric (in terms of mountain bikes), I had brief experience with arresting cables systems on aircraft carriers.

THIS!!!..is how you absorb shock reliably over and over....except this one time....

check out the guy doing jump rope over 100 mph cable snap

so.... what is absorbing shocks there? the cable? the landing gear? both? Are there systems in place nowadays to prevent that sort of breakage?
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,855
9,559
AK
so.... what is absorbing shocks there? the cable? the landing gear? both? Are there systems in place nowadays to prevent that sort of breakage?
I don't know all of the mechanics, but the cable is connected to a big steam piston, so it's my understanding that it's all one giant damper essentially (so obviously a cable-driven damping rod must now be applied to mountain bikes). The cable surely stretches, but as you saw when it broke, it's not attenuating the energy, the steam piston attenuates the energy according to what I remember. My brother was a nuclear engineer on that ship and others.
 

StiHacka

Compensating for something
Jan 4, 2013
21,560
12,504
In hell. Welcome!
I don't know all of the mechanics, but the cable is connected to a big steam piston, so it's my understanding that it's all one giant damper essentially (so obviously a cable-driven damping rod must now be applied to mountain bikes). The cable surely stretches, but as you saw when it broke, it's not attenuating the energy, the steam piston attenuates the energy according to what I remember. My brother was a nuclear engineer on that ship and others.
I don't think the arresting cables are attached to any of the catapult systems (a big steam piston powers a catapult). Even the mighty wikipedia says
"During a normal arrestment, the tailhook engages the wire and the aircraft's kinetic energy is transferred to hydraulic damping systems attached below the carrier deck. .... The arresting engine brings about a smooth, controlled stop of the landing aircraft. ... Carriers use hydro-pneumatic systems, wherein oil fluid is forced out of a cylinder by a ram (that is connected to the purchase cable) through a control valve.[11] A major development in arresting gear was the constant runout control valve, which controls the fluid flow from the engine cylinder to the accumulator and is designed to stop all aircraft with the same amount of runout regardless of the weight and speed."
 

FlipSide

Turbo Monkey
Sep 24, 2001
1,376
804
I don't think the arresting cables are attached to any of the catapult systems (a big steam piston powers a catapult). Even the mighty wikipedia says
"During a normal arrestment, the tailhook engages the wire and the aircraft's kinetic energy is transferred to hydraulic damping systems attached below the carrier deck. .... The arresting engine brings about a smooth, controlled stop of the landing aircraft. ... Carriers use hydro-pneumatic systems, wherein oil fluid is forced out of a cylinder by a ram (that is connected to the purchase cable) through a control valve.[11] A major development in arresting gear was the constant runout control valve, which controls the fluid flow from the engine cylinder to the accumulator and is designed to stop all aircraft with the same amount of runout regardless of the weight and speed."
For those interested, "Constant Runout Control Valve" == fancy enginerds term for "Moar Shimz".
 

Jm_

sled dog's bollocks
Jan 14, 2002
18,855
9,559
AK
I don't think the arresting cables are attached to any of the catapult systems (a big steam piston powers a catapult). Even the mighty wikipedia says
"During a normal arrestment, the tailhook engages the wire and the aircraft's kinetic energy is transferred to hydraulic damping systems attached below the carrier deck. .... The arresting engine brings about a smooth, controlled stop of the landing aircraft. ... Carriers use hydro-pneumatic systems, wherein oil fluid is forced out of a cylinder by a ram (that is connected to the purchase cable) through a control valve.[11] A major development in arresting gear was the constant runout control valve, which controls the fluid flow from the engine cylinder to the accumulator and is designed to stop all aircraft with the same amount of runout regardless of the weight and speed."
No, I knew it wasn't connected to the catapult, but I thought a steam piston was involved with both. My mistake.
 

dcamp29

Monkey
Feb 14, 2004
589
63
Colorado
For those interested, "Constant Runout Control Valve" == fancy enginerds term for "Moar Shimz".

I did work on the arresting gear on aircraft carriers for my first job. It's a giant hydraulic piston (maybe 6' diameter 50' long one on each side of ship) with block&tackle style cable loops back and forth from each end of the piston. When the plane hooks the cable- it starts to compress the piston. As I understand the valve is just a huge tapered needle going into a hole- the plane will maximum compress the piston no matter if it's a light plane or heavy one. They land with engines on full blast so if they miss (there are 4 cables on the deck) they can take off again.

Just watch top gun.
 

StiHacka

Compensating for something
Jan 4, 2013
21,560
12,504
In hell. Welcome!
I did work on the arresting gear on aircraft carriers for my first job. It's a giant hydraulic piston (maybe 6' diameter 50' long one on each side of ship) with block&tackle style cable loops back and forth from each end of the piston. When the plane hooks the cable- it starts to compress the piston. As I understand the valve is just a huge tapered needle going into a hole- the plane will maximum compress the piston no matter if it's a light plane or heavy one. They land with engines on full blast so if they miss (there are 4 cables on the deck) they can take off again.

Just watch top gun.
I was almost spot on about the IFP chamber size:
 

mykel

closer to Periwinkle
Apr 19, 2013
5,071
3,780
sw ontario canada
Put that anywhere I say I still won't use carbon bars and some dumbass goes on and on about how strong they are and things are different now.

Put it there. But wait for the dumbass first.
Woo

What do you use for bars?:monkey:
I am on Syntace carbon at the moment.:busted:
I really like carbon due to feel, I have nerve damage in my right hand, and the vibration absorption is very nice; especially the Syntace, which are quite a bit better than the Havoc carbon I have on the trailbike. Have thought about the Spank Virbracores....as I do have concerns with breakage. As I get older (54) and slower I'm no longer very smooth, but am still a Clydesdale so am concerned about surprise unintended dental work.

Thoughts?:no:
 

kidwoo

Artisanal Tweet Curator
I've got a 31.8 raceface atlas on my dh bike

Some 35mm gravity something or others on a turner rfx

A 35mm Anvl bar on a transition patrol

Some 31.8 atlas bars on my dirtjumper



I've got some back issues too where I'll have a hand go numb (sometimes a whole arm). I've never ridden any handlebar that changes that though. That is why I run thinner profile bars on my dh bike and dirtjumper however. I do notice a significant difference between 31.8 and 35mm diameters. Newer carbon bars actually feel worse to me to be honest. Some of the old ones were a little dampy but they also killed people on the regular.