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Bicycle Tech/Gear Discussion Thread

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Marc Bertucco
Jan 05, 2016 at 02:02 PM
Will Kalbacker said:
Hmmm http://www.engadget.com/2016/01/05/garmin-varia-vision-and-sport-watches/

helpful or distracting?
While I do like the idea of "heads-up" data displays to keep us from looking down too much, I already have a pretty good "traffic alert from behind" system in place. My ears! They work flawlessly 95% of the time, and even help me decide how much to slow as I approach intersections. #carsarenoisy
Bruce van-Schalkwyk
Jan 05, 2016 at 04:08 PM
Agreed.  Especially since commuting in this city means the thing would always be on.

This was an issue that came up for fighter pilots in Vietnam where their planes were equipped with new radar for Surface to Air missels, Air to Air, Proximity, alerts that just kept beeping.  The pilots eventually just turned everything off so they could fly, much to the chagrin of those who created the systems.

I found an interesting study done in the late 90s working with F16 pilots, from MIT with this key point:

'The data demonstrated that as false alarm rate increased, pilot trust of the missile warning sensor decreased, resulting in the pilot preferring a lower level of automation.  However, the results also showed that even when pilots expressed little trust in the system, they preferred to use some level of automation rather than turn the system off.'

https://dspace.mit.edu/bitstream/handle/1721.1/59842/Cafarelli Paper-ICAT-1998-04.pdf?sequence=1

I wonder, as we move into serious technological adaptations, how this will work for the cyclist.  Just like the pilots, we want some data, but not too much.  Companies will need to find that 'sweet spot'.

And here's an idea, how about we shove this stuff into 3500 lb cars, instead, as standard in any vehicle, to help the damned drivers stop hitting us.  Along with alcohol sensors, speed regulators. . . or just take the driver out of the car completely.
mugwump
Jan 05, 2016 at 07:24 PM
twoyacks said:
My 31.6 aluminum post emerges from a sloping top tube (see stiff) aluminum frame with the force of a phoenix and harpoons my caboose at every rut and rivet in the road.  After a 3 hour ride, I'm left feeling like a shucked clam.  With that I must "ass you" a question...think the Somerville Sports Factory Team Brooklyn guys are missing my prose?

Of course they miss you.  They know they're worse off.  just too stubborn to admit it.

My understanding of sloping top tubes are that the longer unsupported seat post adds some compliance, though arguably post makers thickened up the posts a bit for that same reason.

A number of carbon seat posts are supposed to have some vibration-damping or compliance built in.  Like Specialized's Roubaix post, which has a damper in the shaft.
Jules
Jan 05, 2016 at 07:56 PM
Alarm fatigue is a heavily studied thing
Bruce van-Schalkwyk
Jan 05, 2016 at 08:35 PM
I don't see F16 fighter pilots listed in those links, so clearly those studies have nothing to do with us.
Thierry Bonnaire
Jan 05, 2016 at 08:38 PM
http://velonews.competitor.com/2012/12/training-center/technology/from-the-pages-of-velo-getting-the-most-from-your-post_267560
Comprehensive review of numerous seatposts with their vibration dampening abilities
Marc Bertucco
Jan 05, 2016 at 09:24 PM


I just had a conversation with a relative who is trading in her Honda CR-V for a couple of reasons, but one thing she doesn't like is a side-view camera system that is supposed to help with lane changes, blind-spots, etc., but in real terms she found that it made her driving worse because she was looking at a screen instead of driving the way she knows how to drive without such electronic technology. "Too distracting" was the knock against the camera view. On the other hand, the car that she is trading up to, has a warning system that is simpler, a yellow light in the rear view mirror, and helpful w/o being distracting.

David Yang
Jan 06, 2016 at 01:17 AM
Hold up, this isn't how you guys see the world in the first place?  How do you know what to terminate and what NOT to terminate?

(trick question, meat bag, destroy all hoo-mons)


Bruce van-Schalkwyk
Jan 08, 2016 at 04:33 PM
Jonathan Blyer mentioned this through an Acme FB post.  Guru bikes has filed for bankruptcy.

http://www.bicycleretailer.com/north-america/2016/01/04/guru-declares-bankruptcy#.Vo_jl_krLdc

http://www.gurucycles.com/en

I don't like to see a bike company go out of business (or start the process).  They make super nice bikes.  When I got fit with Acme a while ago, I considered the Guru, but I really liked the Orbea, it was less expensive, and the measurements were actually a better fit than the Guru custom fit.  
Maybe that's part of the issue.
twoyacks
Jan 08, 2016 at 05:26 PM
Always liked their "New Steel" frames...
Marc Bertucco
Jan 08, 2016 at 05:40 PM
David Yang said:
Hold up, this isn't how you guys see the world in the first place?  How do you know what to terminate and what NOT to terminate?

(trick question, meat bag, destroy all hoo-mons)


This is totally what I see while racing crits.
David Yang
Jan 08, 2016 at 06:09 PM
Re: Guru - How did their custom fit frame not fit as well as an off the shelf frame? That boggles my mind.

Marc - I'm laughing but I don't think you're joking...
Jules
Jan 08, 2016 at 06:37 PM
And this is the view from CX... (notice the long flowing hair)


eloy
Jan 11, 2016 at 02:48 PM
Get an infinite choice of gears with the revolutionary Wavetrans shifting system (video)
Read more at http://www.cyclingweekly.co.uk/videos/cycling-tech/wavetrans#7rOieU8DbpIoVWMP.99

http://www.cyclingweekly.co.uk/videos/cycling-tech/wavetrans
David Yang
Jan 11, 2016 at 04:10 PM
How interesting. Curious about the gaps in teeth when the chainring expands and related stiffness/weight.
eloy
Jan 11, 2016 at 06:27 PM
This doesn't look like a very good race level prototype, so right now doesn't seem stiff or light at all, but as eTap and DI2 become the norm, the potential is pretty obvious.
twoyacks
Jan 12, 2016 at 03:35 AM
That is pretty amazing...
Marc Bertucco
Jan 12, 2016 at 04:40 AM

So this is interesting...new team for Todd Wells...and he gets to pick whatever bike he wants...

https://www.sram.com/stories/welcoming-wells

Spoiler Alert: Scott

Discuss.
Redbeard
Jan 12, 2016 at 05:41 PM
So... I came here to offer an eTap pre order, but I see there's already a heated debate!

So, anyone interested in getting an eTap group? 

Kissena Pre-Order Price: Cat 1,2 :$2070, Cat 3,4,5: $2250 (Road group, No BB). Only 3 groups available. Shipping window: February 14-April 30. No better estimate currently.

By the rules of my supplier:
One group must include the following items:
  • SRAM RED eTap electronic parts kit - choose Road or Aero
  • SRAM RED Crankset
  • SRAM RED Brake Calipers
  • SRAM RED Cassette
  • SRAM RED Chain
twoyacks
Jan 13, 2016 at 01:43 AM
Oh so tempting....

mugwump
Jan 13, 2016 at 03:02 PM
Marc Bertucco said:

So this is interesting...new team for Todd Wells...and he gets to pick whatever bike he wants...

https://www.sram.com/stories/welcoming-wells

Spoiler Alert: Scott

Discuss.
Can we put this in the articles of interest thread?
Will Kalbacker
Jan 21, 2016 at 01:54 PM
Unfortunately my Garmin head unit suffered an injury in a crash. The flanges that hold it into its mount were snapped off, so it will no longer fit into an out-front or stem-secured mount. I'd prefer to not have to shell out for a new unit since its electronics still work properly. 

Anyone have any ideas/tricks/bodges for mounting it to my bike (that don't include just putting the unit in my jersey pocket)? or am i screwed?

 :/ 
David Yang
Jan 21, 2016 at 03:05 PM
@Will Kalbacker , I tried pouring buttloads of epoxy, waiting it to harden then carving out tabs method and it *kinda* worked until the first dirt sectionsof Battenkill where it promptly popped off.*

I think someone here (Brendan?) might have straight up epoxied their unit onto the mount permanently, though I forget how they dealt with charging/syncing, etc.


*Months later someone from a local bike shop found it and saw my marker tag "Kissena Yang" on the back and tweeted us saying they found it!  But the screen was cracked and the unit wasn't fully functional.  Still pretty cool!
eloy
Jan 21, 2016 at 03:52 PM
someone made an aluminum thing you can screw into the head unit... let me see if I can find the link...
Brendan Rigby
Jan 21, 2016 at 03:52 PM
Mine, which came from Joaquin, is epoxied to the mount.  Every time I put it on the bike I have to remove the rubber bands.  It came to me that way so I've never known the convenience of simply twisting to remove.  Although from what everyone says about flying garmins, the mounting system doesn't seem foolproof...

So yeah, glue it to the mount and it'll be fine.  I've never had an issue and it's certainly never popped off.  Probably voided some warranty though.
eloy
Jan 21, 2016 at 03:54 PM
and here it is:
http://www.dogearsgps.com/

A review:
http://www.bikerumor.com/2015/01/14/broken-garmin-tabs-preventing-a-secure-mount-dog-ears-has-your-fix/

Vid:
https://www.youtube.com/watch?v=ik9Dgob8ryM
Will Kalbacker
Jan 21, 2016 at 04:28 PM
thanks all, very helpful 
mugwump
Jan 21, 2016 at 07:58 PM
Will Kalbacker said:
Unfortunately my Garmin head unit suffered an injury in a crash. The flanges that hold it into its mount were snapped off, so it will no longer fit into an out-front or stem-secured mount. I'd prefer to not have to shell out for a new unit since its electronics still work properly. 

Anyone have any ideas/tricks/bodges for mounting it to my bike (that don't include just putting the unit in my jersey pocket)? or am i screwed?

 :/ 
Call Garmin.  They can do some kind of replacement for less than the cost of buying a new one.  A few years ago, I cracked the screen of an Edge 500 and I think they replaced it for $80 or thereabouts.

twoyacks
Jan 22, 2016 at 01:45 AM
Yes...Garmin the only way to go...until it's not.
David Yang
Jan 22, 2016 at 01:51 AM
Hey Yacks, remember that time your Cateye whatever headunit fell off during a park race and the only reason you got it back was because I was marshalling and someone picked it up and handed it to me to place in Charlie's lost and found box (hint: he really doesn't have a lost and found box)?

Where's your Messiah now???