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Bicycle Tech/Gear Discussion Thread

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My meter has a red I ring seal if that helps any as far as dating it? Mike that is probably a piece of metal from the valve stem that broke free during manufacturing.
twoyacks said:
My meter has a red I ring seal if that helps any as far as dating it? Mike that is probably a piece of metal from the valve stem that broke free during manufacturing.
Yacks - you're way off. I'm wavering between baby alien and half eaten unborn twin of the tube. 
Hamilton's vanishing twin !!
Stages told me to take the cover off and drive home that way (and to avoid any rainstorms on the way home). This should migrate any H2O out of the unit.
Really?  They actually advised you to drive home without a cover to dry it out?
Yup...there may have been some "wake & bake" going on in the Colorado headquarters.
Stages back online.....Powercal HR strap not so much....
der. pulleys for an original sram red rear der.   I needs me some...what should I get to replace what has become some very small chinese throwing stars.
TACX

JP says we should get the ones with 11 teeth

thanks!

These cost less than $20 and fit in my SRAM Red derailleur http://www.amazon.com/SRAM-Force-Rival-Derailleur-Pulley/dp/B001CJX6D6/
Thanks...I spent $41 and got some fancy white Tacx pulleys with ceramic bearings...

What does JP reccommend for Shimano derailleurs? 
I've been wanting to try these:

image

http://www.jensonusa.com/!J1ncXy70dW5qFcJfLi9ePA!/KCNC-Ceramic-Derailleur-Pulley-Wheel?utm_source=FRGL&utm_medium=organic&gclid=CMHhk4r3ur8CFTJo7Aod6UwARw

MIke, want to go in on a bunch? Maybe we could get Ride to order some for us.
mperlberg said:

What does JP reccommend for Shimano derailleurs? 
Enduro and Ceramic Speed seem to have the lowest-resistance pulleys.  But the price for the performance advantage might not be worth it.  I'd suggest looking into Tacx (either ceramic or steel, ceramic has less drag, steel is chaper) and Origin8 (ceramic)

For those still riding 10-tooth pulleys, upgrading to 11-tooth will drop drag and should fit on most 10-speed derailleurs.  I've got 11-tooth on my campy when the cages were designed for 10.

Vlad,
I have my doubts about the aluminum ones in terms of wear.  There's an ongoing debate about whether the cut-outs hold muck or let it flow through.
Pro or not pro: Cutting a shim from a matchstick and wedging it next to my valve stem to stop it from rattling, then wrapping the job in a bit of electrical tape to hide it.
Effective. Pro is to get a section of plastic sheath that comes over the valve stem on latex tubes. See me for the pro move.
Anybody in Brooklyn have the tools and/or know how to pull out their BB30 BB and lube or replace bearings? I've got some annoying noise coming out of there.  If I could borrow those fancy tools, I'd appreciate it.  Thanks 
Also, anybody have experience with putting new chainrings on a Quarq? Riken or Elsa. Shouldn't need to be sent back in for a recalibration, right?
konrad said:
Also, anybody have experience with putting new chainrings on a Quarq? Riken or Elsa. Shouldn't need to be sent back in for a recalibration, right?
JP might know.
konrad said:
Also, anybody have experience with putting new chainrings on a Quarq? Riken or Elsa. Shouldn't need to be sent back in for a recalibration, right?
Correct.  No "sendy-backy"

Should just work.
I have bb30 stuff.
The bottom down tube bottle cage mount on my Foil is skew-whiff, which makes the bottle poke out like a rocket booster. Don't really want to warranty it, I guess I should just talk to Carbonara?
The bottom down tube bottle cage mount on my Foil is skew-whiff, which makes the bottle poke out like a rocket booster. Don't really want to warranty it, I guess I should just talk to Carbonara?
Yes.  Although there is a tool for re-inserting a screw mount; Ride may have said tool.
In this case the hole is actually drilled off center.
the blunt force solution to this is to use a cheap alloy cage (like the venerable elite ciussi) and bend the cage.
stupid plastic bike...the "artisan" that crafted that would be ashamed...cept machines don't have feelings...artificial intelligence is addressing that and soon carbon bike molds will feel disappointed in their efforts and jealous of titanium frames. 
Jules said:
The bottom down tube bottle cage mount on my Foil is skew-whiff, which makes the bottle poke out like a rocket booster. Don't really want to warranty it, I guess I should just talk to Carbonara?
Yes.  Although there is a tool for re-inserting a screw mount; Ride may have said tool.
Foils have molded in bottle mounts, not like the typical flared rivnuts that go into the hole. Can't really pull them out. You could possibly rethread them straighter, but that means killing the threads in there, not ideal either. I'd honestly grab like a piece of eccentric hardware so the bolt can just tighten up crooked, but sit flush on the cage.

mattie davitt said: grab like a piece of eccentric hardware so the bolt can just tighten up crooked, but sit flush on the cage.
I might try that and drill an off-center hole in the cage.
konrad said:
Also, anybody have experience with putting new chainrings on a Quarq? Riken or Elsa. Shouldn't need to be sent back in for a recalibration, right?
Konrad,
The first thing is to get a torque wrench.  You want to torque the chainring bolts to spec.  I think it's 10Nm, but I don't have the brochure in front of me.  Make sure your bolts are steel, not aluminum.

The second thing. is are you replacing the rings with identical rings?  If yes, recalibration is unnecessary. If not, it could be a good idea.  Particularly if you're going to or from an aero outer chain ring.  If you're changing the teeth combinations, it could also be a good idea to recalibrate.

Recalibration is fairly simple, though you need a few things.  You need go get Qalvin operating (instructions here: https://www.quarq.com/store/item/1711/) and you need a proven weight of 20kg or more.  Once you have Qalvin and the weight, Qalvin will take you through the steps

(BTW, for my fellow Quarq users, Quarq released new firmware for the Riken and Elsa in June which should probably increase battery life)