That video freaks me out because the environment has such a high potential for nasty injury if he goofs. Sharp concrete edges, jagged rusty steel, rebar popping out of stuff. Yikes!

First thing I thought as well.

.2 mm. And a stress riser will only occur where there is a significant bending stress. A seat post is mostly axial compression.

Even with the post being at a pretty good angle like they are?

The axial compression stress will usually still exceed the bending tensile stress. So the post will be in net compression around its circumference. Now, a lot of this depends on your seat position relative to the axis of the seatpost and how much of a fat ass you are.

A month ago everyone jumped down my throat for suggesting that a seatpost cut by a hacksaw wielding jackass might be unsafe due to stress risers. Now a seatpost turned down .002 by a caliper wielding machinist is "iffy" due to those same stress risers. :foo:

I'm sure all the seatpost safety experts here can tell me what torque spec y'all used on your seat clamp bolts. Oh, wait... I'm the guy who was ridiculed for looking for an installation manual so that I could get the torque spec on a part. Oh yeah.... nevermind.


-Timothy "I ain't mad" H-

I forgot about that part of it. So if the post has setback, and the saddle is slammed rearward, that adds to the bending force. How about the rocking and twisting forces? Would they play a role?

Cutting OFF the end of a post and making a modification to the middle of a post is apples to oranges. There is no stress on the end of the post. None. Cutting material OFF the end of a post with anything is fine with regards to safety. Hack saw vs pipe cutter vs etc vs etc are just process/cosmetic preferences.

Depends on your riding technique. The way I ride, I keep my hips steady and don't rock much on the saddle, nor do I twist on it. The saddle is meant to be a perch to support most of your weight, and not a reaction point for pedal forces. Basically, the pedal forces are transferred to the handlebar, which is why handlebars and stems are more likely to break than seatposts. Try riding no-handed, and see how much power you can get to the pedals, not much.

The grinds were my favorite. When I shared the video on Facebook, one of my bike friends said it took over 100 tries to get that shot - I have no idea where this information came from, but wow, that's dedication.

today im shopping for used honda ruckus scooters. because reasons.

Today I got Cisco Meraki certified. Because salary increase.

-Tim-

there was a gap in between ties that was bout 18" deep. it was like a cartoon....I was talking to my buddy and next thing I know I'm about a foot and a half shorter than I was 1/2 a second before.

LOL that must've been great to watch unfold

Somewhat related: i went out for a post work night ride on the mtb and ate **** like 80 times just now, wonder what parts of me will be angry tomorrow

Mmmm office phones :roflmao2:

I have a buddy who works there, Cisco hooked them up with Chrome mini-metro messenger bags.

Today I am heading down to the LBS to install the following. Having a LBS that has a customer work stand and full use of their tools for no charge is an absolute win. Bought everything through them so everything is all good!

new bars
new bar tape
new tires
new chainring
new chain
new chainring bolts
new cog
new front brake pads

I met the co-founder of Cisco a couple years back. He had some side-project that involves nanotechnology and came on site to visit our Chief Scientist and myself, as it involved my area of expertise.

The guy was totally casual, dressed in sneakers, blue jeans and a cotton sweater. A couple minutes in he goes: "Do you know who I am?"

To which I responded: "Yeah, we googled you :)."

Nice guy.

TIL that im down 6lbs since i started a 25k training plan

http://replygif.net/i/1260.gif

Meraki phones are nice - basically an iPad with a handset.

Great job security but voice engineers are never home to see their family, always working, evenings and weekends because the phone system can't be maintained during the day while business is using it.

Cisco is giving me a stack of expensive gear - Meraki security appliance, 24 port switch and stadium wireless controller. Of course I have to learn it, demo it and fix it for customers when it breaks. Almost rather have a messenger bag.


-Tim-

nice work [MENTION=303015]Mumonkan[/MENTION]

i'm running a half marathon tomorrow morning, this will be my second but entertaining the thought of working up to a full

Bike is done. Feels really crisp right now. I suck at wrapping bars so I get to redo them tomorrow because the weather is supposed to be crap. Pics to come tonight.

Today I climbed Mt. Hamilton. Slow as ****, but I made it to the top where it was cold and the wind was nuts and I was woefully underdressed.

Pics or it didn't happen:

http://i.imgur.com/DV2tZbV.png

Today I discovered an extended (double) trailer for Planet Earth II.

Unlike the previous version, this one is going to have a score, and it was composed by one of my favorites, Hans Zimmer.

Makes me weep. Literally weep.

Gonna be sooooooo gooooooooooooooood