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-   -   Addiction 2022.1 (https://www.bikeforums.net/showthread.php?t=1244501)

datlas 03-21-22 05:57 AM

Re: chain drop/chain catchers, I would like to think that a properly setup drivetrain would never drop a chain and BITD when I rode 6 speed it NEVER happened. NEVER. EVER.

However, it seems the more modern drivetrains (possibly complicated by compact cranksets) make it happen occasionally to me, even when drivetrain and FD are set up properly.

Before I installed my chain catchers, I would drop the chain when shifting from big to little maybe on 0.5% of front shifts. One in 200. Rare, but often enough that it makes sense for me to have the chain catcher.

YMMV.

p.s. my experience is limited to Shimano cable-activated drivetrains. Obv may be different for SRAM/Campy/Di2.

BillyD 03-21-22 06:15 AM

Back when I used to ride the only time I dropped a chain was on that rare occasion when I neglected to shift down for a hill.

Mojo31 03-21-22 06:44 AM

Too easy.
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Trsnrtr 03-21-22 06:46 AM


Originally Posted by ls01 (Post 22445591)
Öor be the bigger man. I guess...

Weíre trying.

datlas 03-21-22 06:48 AM


Originally Posted by Mojo31 (Post 22445661)
Too easy.
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Bite me. Took me 5.

Trsnrtr 03-21-22 06:49 AM


Originally Posted by Mojo31 (Post 22445661)
Too easy.
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I agree.

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ls01 03-21-22 06:51 AM


Originally Posted by BillyD (Post 22445643)
Back when I used to ride the only time I dropped a chain was on that rare occasion when I neglected to shift down for a hill.

I am guilty of this. Cost me $600.00 in broken parts.

ls01 03-21-22 06:57 AM


Originally Posted by Trsnrtr (Post 22445665)
Weíre trying.

I know what it's like to have problems with a club. It's happened to me twice. Being fast is a heavy cross to bear, makes you a target. If they can't beat you on the road then they will try to do it in the boardroom.
Eff em!

LAJ 03-21-22 07:22 AM

Mediocrity

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indyfabz 03-21-22 07:40 AM


Originally Posted by rjones28 (Post 22445370)
Looks like they had good cycling weather in DC this weekend.

https://cimg1.ibsrv.net/gimg/bikefor...e189287744.png

It got up to around 75 in Philly on Saturday. I rode around town in shorts and a t-shirt.

Mojo31 03-21-22 07:57 AM


Originally Posted by indyfabz (Post 22445710)
It got up to around 75 in Philly on Saturday. I rode around town in shorts and a t-shirt.

That's a t-shirt too much. Apparently.

indyfabz 03-21-22 07:59 AM


Originally Posted by Mojo31 (Post 22445236)
It would be sweating.

Dang. Didn't even think of that. Dallas in a tent during the summer? Ugh.

My first camping experience was when I rode across the country. We had some miserable nights in the Midwest. I can honestly say that I would rather sleep in a tent when it's in the 30s than when it's warm/hot and humid.

seedsbelize2 03-21-22 08:00 AM

How does Lukoil Genesis 0-20 compare to Mobile 1 in the same grade? Or Castrol, for that matter?

LesterOfPuppets 03-21-22 08:04 AM

Uggh.


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Mojo31 03-21-22 08:12 AM


Originally Posted by indyfabz (Post 22445720)
Dang. Didn't even think of that. Dallas in a tent during the summer? Ugh.

My first camping experience was when I rode across the country. We had some miserable nights in the Midwest. I can honestly say that I would rather sleep in a tent when it's in the 30s than when it's warm/hot and humid.

I don't mind camping in the summer if it's someplace really neat. But, who would want to live in a tent in the Texas summer when you have to go to work every morning? If you are going to do that, then just buy a tent for $60 and find a comfy spot under an overpass.

Mojo31 03-21-22 08:13 AM


Originally Posted by seedsbelize2 (Post 22445721)
How does Lukoil Genesis 0-20 compare to Mobile 1 in the same grade? Or Castrol, for that matter?

Not supposed to buy Rusky stuff like Lukoil products.

bampilot06 03-21-22 08:22 AM

No Dropped Chain this morning! :bday:



I never shifted the front derailerÖÖ..

genejockey 03-21-22 08:36 AM

Meh.
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datlas 03-21-22 08:37 AM

lplo

big john 03-21-22 09:40 AM

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ls01 03-21-22 09:57 AM


Originally Posted by bampilot06 (Post 22445739)
No Dropped Chain this morning! :bday:



I never shifted the front derailerÖÖ..

That's another way to go...

datlas 03-21-22 10:43 AM

Hey Seeds! There is someone in "General" asking about road cycling in Yucatan! Can you go offer some help?

Mojo31 03-21-22 11:02 AM


Originally Posted by bampilot06 (Post 22445739)
No Dropped Chain this morning! :bday:



I never shifted the front derailerÖÖ..

Need your experienced opinion. What could have caused this, one crew intentionally going into a dive while the other tried to stop him?The plane was headed easterly when at 2:20:59pm it began a sudden plunge that would have likely flung objects and any unbelted passengers violently to the ceiling. It went from level flight to a descent rate of almost 31,000 feet per minute in about five seconds.

But after about 45 seconds, the descent became less steep and for a few moments the jet climbed by more than 1,000 feet. It went from 7,425 feet up to 8,600 feet in about 10 seconds, according to the FlightRadar data, which is based on data transmitted by the plane. Just as the earlier dive would have flung items to the ceiling, the climb would have created huge gravitational forces, pinning people in their seats.

The climb was short-lived. The jet resumed its dive seconds later, plunging again at about 31,000 feet per minute. The last position recorded on the FlightRadar track was at 2:22:36pm, about a minute and 35 seconds after it began.

Itís not clear what would have triggered such an extreme maneuver. The jet turned to the right and left slightly during the descent, but remained on a mostly easterly heading.

bampilot06 03-21-22 11:17 AM


Originally Posted by Mojo31 (Post 22445905)
Need your experienced opinion. What could have caused this, one crew intentionally going into a dive while the other tried to stop him?The plane was headed easterly when at 2:20:59pm it began a sudden plunge that would have likely flung objects and any unbelted passengers violently to the ceiling. It went from level flight to a descent rate of almost 31,000 feet per minute in about five seconds.

But after about 45 seconds, the descent became less steep and for a few moments the jet climbed by more than 1,000 feet. It went from 7,425 feet up to 8,600 feet in about 10 seconds, according to the FlightRadar data, which is based on data transmitted by the plane. Just as the earlier dive would have flung items to the ceiling, the climb would have created huge gravitational forces, pinning people in their seats.

The climb was short-lived. The jet resumed its dive seconds later, plunging again at about 31,000 feet per minute. The last position recorded on the FlightRadar track was at 2:22:36pm, about a minute and 35 seconds after it began.

Itís not clear what would have triggered such an extreme maneuver. The jet turned to the right and left slightly during the descent, but remained on a mostly easterly heading.


Severe turbulence caused the airframe to break

or

The horizontal stabilizer got stuck nose down. The whole thing moves to trim the aircraft. Itís a jack screw.

First time on a 737 but it has happened on an Md- 80s in the past


or


Crew really didnít want to make it to their destination.

Mojo31 03-21-22 11:26 AM


Originally Posted by bampilot06 (Post 22445922)
Severe turbulence caused the airframe to break

or

The horizontal stabilizer got stuck nose down. The whole thing moves to trim the aircraft. Itís a jack screw.

First time on a 737 but it has happened on an Md- 80s in the past


or


Crew really didnít want to make it to their destination.

And, I've been telling my wife that turbulence has never caused an airliner to crash.

Mojo31 03-21-22 11:35 AM

Just saw the video of that plane crashing after a near vertical descent. Can't imagine the terror for those onboard.

phrantic09 03-21-22 11:39 AM


Originally Posted by Mojo31 (Post 22445927)
And, I've been telling my wife that turbulence has never caused an airliner to crash.


First time for everything?

I canít imagine the terror either.

bampilot06 03-21-22 11:54 AM


Originally Posted by Mojo31 (Post 22445927)
And, I've been telling my wife that turbulence has never caused an airliner to crash.


I have no idea what the MX standards of China are. I have no idea how often inspections are completed, if they even document issues. I know itís not the same as over here.


Airliners are built to handle some incredible Gs. I am just spitballing, and off the top of my head I am not sure if I can think of an inflight break up due to turbulence.


If you study airplane crashes, 90 percent of them are a multitude of errors. Usually there is the main error, but itís a combination that leads to the crash.


29,000 feet you have a pretty big speed window. The higher you go the smaller the window. Basically you are confined to a speed of 250 plus or minus 10 knots. If you go above you could over speed the airplane if you go below you can stall the airplane. At 29,000 the window is much larger and the 737 can cruise at around 310 indicated. 310 isnít the max indicated airspeed but it provides cushion from over speeding.


Maybe they stalled, which then inadvertently led to a compression stall and loss of power, my only problem with this theory is the plane is going straight down.

The faster the air moves over a wing the more lift it creates. The plane will start to climb again until the energy is bled off, wing stalls again and then it will dive again. If you are high you might see this happen a couple of times.

For what little knowledge I have, for a plane to be going to straight down it would have to be held in that position, A significant piece of airplane is missing, or complete flight control malfunction.

Mojo31 03-21-22 12:22 PM

When I was in law school, I worked for a firm that handled insurance claims arising from general aviation crashes. The crashes virtually always resulted from a VFR pilot taking off and encountering IFR conditions. There was virtually always someone on the ground who described the plane coming down in a vertical death spiral. Cannot imagine that ride down.

seedsbelize2 03-21-22 12:55 PM


Originally Posted by Mojo31 (Post 22445731)
Not supposed to buy Rusky stuff like Lukoil products.

Didn't know it was Ruskie. I found a Mexican brand I'm going to go with. 65 years in business and half the price of Mobile 1


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