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Bicycle Tech/Gear Discussion Thread

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Tim Heckman
Aug 10, 2015 at 12:56 AM
Hi guys, hoping I can get some insights from the group on this one.

My bike's recently started having a clicking noise coming from the drivetrain while pedaling. Based on the noise going away when wheels are swapped, it seems isolated to the rear wheel. Mechanic at LBS checked several different things (chain, spokes, shifting, etc). Noise went away when he put the rear wheel back on and tightened everything back up. After some climbing today, the noise is back. I have the Ritchey WCS Zeta II's (just over a year old now, never been crashed or damaged). The mechanic was thinking the freehub might need looking at or need an overhaul.

Since I'm still relatively new to this, I wanted to ask the group if this sounds reasonable, or if anyone else has run into this with the Ritchey wheels.

Thierry Bonnaire
Aug 10, 2015 at 01:08 AM
I remember that Mike Perlberg had problems with his Ritchey wheels. You should contact him.
mugwump
Aug 10, 2015 at 02:10 AM
Tim Heckman said:
Hi guys, hoping I can get some insights from the group on this one.

My bike's recently started having a clicking noise coming from the drivetrain while pedaling. Based on the noise going away when wheels are swapped, it seems isolated to the rear wheel. Mechanic at LBS checked several different things (chain, spokes, shifting, etc). Noise went away when he put the rear wheel back on and tightened everything back up. After some climbing today, the noise is back. I have the Ritchey WCS Zeta II's (just over a year old now, never been crashed or damaged). The mechanic was thinking the freehub might need looking at or need an overhaul.

Since I'm still relatively new to this, I wanted to ask the group if this sounds reasonable, or if anyone else has run into this with the Ritchey wheels.

Tim, 
     It could be as simple as the rear hub needs to be tightened a bit.  Try tightening down the quick release a bit more, and see if that makes a difference.

     After that, it could need some grease or lube.  Damaged seems a bit early.
JohnMalcolmson
Aug 10, 2015 at 02:48 AM
Sometime it's the QR. Try Teflon (or deli bag) between frame and quick release on both sides and see if it goes away. Tighten also. 
Jules
Aug 10, 2015 at 05:46 PM
Wow. Brilliant brake light.

http://www.sigmasportstore.com/Sigma-Sport-Brake-Light-p/brakelight.htm


Dan Reiners
Aug 11, 2015 at 02:03 AM
why did they demo that on a bike with dirty dirty brakes?
Tim Heckman
Aug 12, 2015 at 02:40 AM
As for the wheel noise, I also found this, but haven't tried it yet:
http://ritcheylogic.com/content/tech/faqs/#253

PatrickGrehan
Aug 12, 2015 at 03:03 AM
Damn. My left sram shift level broke while I am out in the middle of nowhere in Montana. (Glacier National Park). Good news is I can still get around in the little ring. 

Anyone know if these are a warranty item or whether they can be repaired? I figure I'll call redbeard when I get home...
Dan Reiners
Aug 12, 2015 at 03:10 AM
Patrick. Can't you Bear Grillis that with a pocketknife 20 ft of para cord and a pint of your own urine? 
twoyacks
Aug 12, 2015 at 03:23 AM
David Yang
Aug 12, 2015 at 04:31 PM
PatrickG said:
Damn. My left sram shift level broke while I am out in the middle of nowhere in Montana. (Glacier National Park). Good news is I can still get around in the little ring. 

Anyone know if these are a warranty item or whether they can be repaired? I figure I'll call redbeard when I get home...
From what I've read about SRAM in the past, they're pretty good about their replacing defective/broken product even if it is out of warranty.

Can you tell what is broken about it?  Red internal components seemed to be "beefier" than Force/Rival, but this was back in the 10speed era.
PatrickGrehan
Aug 12, 2015 at 07:27 PM
The front derailleur lever snapped off. The brake lever works as usual. 
Adam
Aug 12, 2015 at 08:00 PM
Prolly not too hard to fix.  Might be a lot quicker to do it yourself too.

http://www.outsideoutfitters.com/p-28160-sram-shift-lever-assemblies-road-shifter-parts.aspx?variantID=91776&gclid=COf49MeqpMcCFQwmjgodd1UP4Q

David Yang
Aug 12, 2015 at 09:51 PM
PatrickG said:
The front derailleur lever snapped off. The brake lever works as usual. 
Yeeeeep, that'll do it.
Dan Reiners
Aug 12, 2015 at 10:30 PM
David Yang said:
PatrickG said:
The front derailleur lever snapped off. The brake lever works as usual. 
Yeeeeep, that'll do it.
Looks like your doo-hickie broke and the fiddly-bits just need a flimflamflop and you'll be right as rain, Bob's your uncle. 
Dan Reiners
Aug 16, 2015 at 06:02 PM
CX tire direction question here. 

With a Grifo type tires, what way do you point the chevrons if looking at if from the top?

Challenge says both ways work (but have different properties), I think this is BS. I want to hear the collective "wisdom" of you all. Is Challenge pulling my leg, or is there anything about a direction one way or the other?
eloy
Aug 16, 2015 at 10:20 PM
chevron point forward is the standard.

for many seasons I would flip my rear challenge grifo (chevrons point backwards) for a little more traction.

your mileage will vary.
Dan Reiners
Aug 16, 2015 at 10:23 PM
so when you say chevrons point forward. When looking at it from the top of the wheel are they pointing forward (pointing backwards on the contact patch) or pointing backwards (pointing forward on the contact patch)?
eloy
Aug 16, 2015 at 10:59 PM
top of the wheel. chevrons look forward.
Jules
Aug 17, 2015 at 01:22 AM
Arrows point forward when looking down at your wheel. Unless you don't want to slide. Then the other way.
David Yang
Aug 19, 2015 at 06:13 PM
Run flats suck for cars and I'm going to assume that they're going to suck for bikes.

http://www.blessthisstuff.com/stuff/vehicles/cycles/tannus-tires/

twoyacks
Aug 19, 2015 at 06:21 PM
Hydraulics dudes...

http://velonews.competitor.com/2015/08/news/rotor-takes-on-the-drivetrain-market-with-hydraulic-group_381812

twoyacks
Aug 20, 2015 at 02:17 PM
Oh you sweatin it now carbon????  you sweating it?  huh???

http://www.cyclingnews.com/news/specialized-allez-sprint-drops-hammer-on-carbon/

twoyacks
Aug 20, 2015 at 02:23 PM
I'm sure I've seen this technology before....but where???


Bruce van-Schalkwyk
Aug 20, 2015 at 03:10 PM
Gross.
These Enve bars are cool, though.

mugwump
Aug 20, 2015 at 03:43 PM
twoyacks said:
Oh you sweatin it now carbon????  you sweating it?  huh???

http://www.cyclingnews.com/news/specialized-allez-sprint-drops-hammer-on-carbon/

Considering that the CAAD12 just came to market and is lighter, I'm not sure why carbon is suddenly sweating it.  
Dan Reiners
Aug 20, 2015 at 08:26 PM
Wait, you're telling me I don't have all the CAAD's possible?

What am I going to do? OMG GET ME MORE CAAD's STAT!
Marc Bertucco
Aug 20, 2015 at 08:52 PM
Dan Reiners said:
Wait, you're telling me I don't have all the CAAD's possible?

What am I going to do? OMG GET ME MORE CAAD's STAT!
I was wondering why they went from CAAD10 to CAAD12, and then it occurred to me that they wanted to avoid any jokes about "this one goes to eleven." #SpinalTap
Dan Reiners
Aug 20, 2015 at 10:12 PM
I don't care MARC, GET ME MORE CAADs!
Brendan Rigby
Aug 22, 2015 at 04:14 PM
PatrickG said:
Damn. My left sram shift level broke while I am out in the middle of nowhere in Montana. (Glacier National Park). Good news is I can still get around in the little ring. 

Anyone know if these are a warranty item or whether they can be repaired? I figure I'll call redbeard when I get home...
I had this happen to me: the aluminum shift lever on the front shifter simply snapped off at the base.  I warrantied it through a bike shop.  SRAM warranty is 2 years and I was within it, but I think they would've warrantied it anyway.  They'll want the serial number on the inside of the brake lever to check if it's in warranty.  They gave me two brand new shifters even though only one shifter broke.