Hmm, I need to draw the system to really think this through, but assuming negligible damping, I don't think deflection of any component changes measured power enough to matter, since everything is deflecting at the same time. The reason you get lower readings for a power tap vs crank based pm is fiction losses in the chain. Probably tiny for a track bike. Power taps do have some aliasing effects because they measure time based instead of event based. Not sure how much it matters for sprinters, but it's basically negligible for enduros.

Eta: by same time I mean the time effects are too small to matter for classical mechanics.

eh, it's not entirely intuitive because there are parts you don't see. a PM on the spider looks like a PM on the right crank, since it's not really visibly clear that the spider is actually (like, conceptually) located on the spindle, not the right crank - even though it's fairly obvious that it receives input from both cranks.

I can talk about it but I'd rather not until I actually know whether I'll be able to finish it for my dissertation deadline.

Predator circles its prey with new Major Track one-piece carbon handlebar & stem - Bikerumor

What do you all think of these?

A waste of engineering and money.

They solve a problem that already has better solutions.

Why would you pay 2.5-3x the price of a comparable top-tier stem/bar setup to have no angle, reach, or bar tilt options? It's a bad idea. They introduced these back in like 2011. They are not popular for a reason.

This is the equivalent of having a fixed, rigid car seat drilled into the floor of the car. No sliding, no tilting, no adjustments of any kind.

+1

This seems to be the whole model of Predator, IMO.

TC

cool but impractical.

if i was made of money i'd be all about those, for the cool factor. but i'd want to test out the shape of the bar, first, to see if i'd be happy with the sphinx position; i'd also probably wind up having different handlebars to travel with, since those might not fit into my travel bag; i'd also probably wind up maybe not using them on my next bike, since obviously you can't tweak the stem length and angle.

i know a few custom carbon dudes who will wrap a Scatto bar to a carbon stem and smooth out the juncture. that's cool too.

but in general, there's a reason that one-piece bar/stem combos haven't really caught on.

if they were making sprint bars, madison bars, and road bars, they'd probably be a bit more successful.

[MENTION=399402]Banchad[/MENTION] - looking forward to hearing more about it when you are able to talk.

More Perko happiness:

https://www.youtube.com/watch?v=g3ri1th4dBg

TC

Those predators will look nice, but Im sure will flex like crazy. They are aiming for 350g, when scattos are 380g for a narrow 37cm bar only. Not to mention all other issues with fit, however once you have all that set its not like it changes much.

But I bet they would look cool

https://youtu.be/WbYh8i7ZquE

Can someone with the know-how please make me a meme with the part where he says, "Aww f**k; no jeans for you"?

TC

HAHAHAHAHA!

Well, there's always Zubaz!

http://larrybrownsports.com/wp-conte...az-outfits.jpg

But, on the real, what about Keirin Cut Jeans?

You know my team is sponsored by Zubaz, right?

https://scontent-ord1-1.xx.fbcdn.net...31&oe=5770B837

Yes :D

...which is awesome.

kinda NSFW, if this offends anyone I'll remove it.
gif: http://imgur.com/980fEp0
vid: *****************otro

Keirin Cut Jeans are my favorites. Can highly recommend.

Not really NSFW. He just used a curse word. Thanks for being cautious, though.

You are my hero.

In my mind, weavie:internet :: RF's thighs:bike

TC

If only my goofy internet skills could be traded for an ability to kick at the end of a race.

Perhaps a repost, but US officially sending 9 riders to world champs

https://www.usacycling.org/nine-memb...-announced.htm

plus Bobby is in appeals, hope he gets to finish his career on a high note. I don't recognize the guy riding the Omnium in his place.

That's good news. Best of luck to them all.

Jake Duehring and Bobby Lea won the Madison at elite nats last year, Jake won the scratch race and finished 2nd to Bobby in the points race.

https://vimeo.com/152426375

For some reason, that's not showing on mobile. Here is the direct link.

https://vimeo.com/152426375

USA National Records (road and track): http://www.usacycling.org/usa-cyclin...al-records.htm

Seat post pump
The AirSupply Bike Pump Is Hidden in a Seat Post | Digital Trends

Women's Team Pursuit data

IBM's marketing department is making hay from IBM's support of USA Track Cycling. Introduction is here, but the really interesting page is the "session analytics" page, which is data from a training run:

http://www-01.ibm.com/software/ebusi...mmary_dash.png

Winder has 25% of her W' left at the end...get to work, lady! :)

THIS IS SO COOL.
the Power Data section is a little bit confusing, but it's interesting to see who's saving a lot more watts when they're not pulling.
i'd love to play with this app.

very cool indeed. That heart rate data doesn't look accurate, valente's is down to hear resting HR during a pull lol.


When you look at how close the top 10 men TP teams are going to be next month, you can start to imagine how valuable this data becomes and its so much more sophisticated then trial and error and guess work.

This is gibberish:

This says, "We made a website...and counted laps for the riders":

https://i.imgur.com/fs7PIIv.png

I have no idea what this is: