Kissena Forum Archive

Bicycle Tech/Gear Discussion Thread

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Fuck it all, swear if you want to. So long as it's not derogatory or mean spirited it will fly on this forum. Of course if we ever see any U16's on the club we're gonna be up Shit Creek for sure. As for the home-build or pay some hack to do it; if you can figure out how to order clothing on the Champsys site you can build your bike from scratch... The only question is "do you have the time?" 'Cause if you're reading this thread you have the interest, so stop lying to yourself.
There's the old joke,"Don't say fuck in front of the B-A-B-Y."
https://www.youtube.com/watch?v=S8cEtYBsvRY

38s in
My G3 Powertap just died, it first gave out crazy numbers and then zilch. I replaced the battery twice thinking that I bought a defective one but I have still zero response from the unit. Did this problem happened to anyone of you?
Call up tech support at cycleops.
Once it's fixed...put it on a bike with friction shifters and get a Stages Power meter...BOOM !
Damnit.  From what, a pothole?  I felt my rear brake pad rubbing so I opened the lever.  When I took the wheel off to take a look at home, I found this huge groove in my wheel.  Reynolds Assault from 2012.  It's held up pretty well, considering the Brooklyn streets and my weight.
I contacted Reynolds.  Wheel is over 2 years old, no paid warranty, and they'll rebuild a new wheel on my hub (which they'll service) for $480 plus shipping.  Good deal.  I'll ship it out tomorrow.


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Ouch.. I'm very curious as to what happened Bruce since I have the same model wheels. Did Reynolds say anything when you called them?

It reminds me of a vinyl record that's warped due to heat. Possible damage from braking on descents?

I've raced my set at Floyd many times and never had an issue so I know they're durable.
Hey Phil.  I sent Reynolds an email with the pictures, told them I had no warranty.  The woman who responded didn't ask any questions about the wheel; she just wanted to confirm I wanted it to be fixed.  When I said yes, she sent an RMA number and address and said they'd fix it under their Crash Protection pricing.  Easy as pie.  And rest assured, if something happens to one of your wheels, they'll fix it.  I like these guys.

I have no idea how it happened or when.  There was no indication the wheel was broken, except for the pads rubbing.  I'm pretty sure this happened Saturday, and then I did the group ride on Sunday.  I felt the pads rubbing as I rode to the Brooklyn Bridge so opened the lever.  This isn't unusual because I like my pads to be close to the wheel and on uphills, the wheel can rub every now and again.  I thought nothing about it.
But I don't recall any hard hits (more than usual) or brake squeal from any hard downhills, and I try to pump my brakes when going down any fast descents, to specifically stay away from heat build up, plus sitting up helps slow me down.  A spoke overtightened?  Plus a pothole after a descent?  I don't know.  The wheel is just broke.

This is another reason why I like to clean my bike before a race or ride, to catch something like this before I get on the bike the next morning.  Didn't have time the night before the group ride.
Those hoops carbon ??????????  You guys are making it too easy for me.
I'm building up a cross bike and completely new to CX, so appreciate any CX 101 pointers on this build...

Cranks are my last missing component to build up a CX bike: Trek frame, Shimano 105 Group, Hollowtech ii bb, 10 speed, 12/27 cassette. Shorty 4 brakes

Any opinions on the Shimano CX50 46/36 crank for $91 at chainreactioncylces?  Price seems right and 46/36 with a 12/27 seems like a good all around combo.

Thanks!

{cross posted to CX board}



Preferred brand of latex inner tube?

Related, can I use a latex tube sized for up to a 23mm in a 25mm tire?
Why latex?
It seems to me we had a lengthy discussion about how latex is so much more maleable than butyl and has the ability to find its way into tiny holes and crevices and thus produce holes (flats). In 'cross, pinch flats are common due to the low pressures and the forces that pull a tire slightly away from the rim allowing the tube to creep into the gap and get pinched. It seems to me that latex would be a lot more susceptible to pinch flats.
And the benefit of latex was what? Rolling resistance? For 'cross?


Latex for my Green Mountain road racing set-up. I was under the impression that they were much faster than standard tubes.
Challenge Corsa or those green Michellin ones
Latex tubes are faster.  THey're also more supple, which would be a reason to use them in CX.

THere are 25mm latex tubes out there.  Vredestein makes them, as does Vittoria and Challenge.  It wouldn't be surprising if the Vittoria and Challenge come out of the same factory.  Michelin doesn't sell latex tubes anymore.  
Take your time and great care on the install.  And if you get yourself an extra one, leave it in a ziploc bag with talcum powder--actually, this is a method for talc'ing the tubes as well.


I concur installation is like playing operation...
I need to send my Edge 500 in to Garmin to get it refurbished as the buttons are wonky. I was wondering what the turn around time had been like for anybody who'd done this?
embrace a non strava world.

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I just bought some Veloflex Master 25mm open tubular clinchers...They are kind of the same tire as the Vittoria Open Corsa...but the width for the Veloflex is narrower than the Vittoria.  My Vittoria 25's on the Stan's Alpha rims (with a wide inner cavity...laughing) are really close to 28mm where the Veloflex 25's on the same rim are closer to a true 25mm.  
If you are deciding between these 2 tires be in the know that the Vitt's are wider than advertised.
The Veloflex's have a bit more road feel and are maybe racier...but the Vittoria's are just meat plows in a 25...they roll over anything...in my shorty stink at Floyd on Sunday those tires cut through the chop like a flaming sword through butter.  I will have a more thorough review of the Veloflex after I ride them to Montauk on Saturday...Yacks
I have a pair with gum walls , I love the way they roll
GUMMY !!!
Just from my experience with 23mm Veloflex masters years ago, they rode beautifully, but seemed delicate (rubber tread wore quickly, aka easy flats) and sucked in the rain.
Yang's the new anti flat belt thingy seems to work well...I rode my 25mm vittoria's all winter on the lie service road with no flatty's

Latex for my Green Mountain road racing set-up. I was under the impression that they were much faster than standard tubes.
Marc they are lighter as well. So I would actually skimp on a 25mm tube and get the 18-23mm and cut more weight. 
I've never had a problem with the 23mm latex tubes in 25mm Vittoria tires... Those tires are so fucking wide I feel like I'm in the middle of a balloon race when I ride them.
BB30 n'aime pas las pluie.

After riding home in the rain on Tuesday evening, my bike was croaking mightily all the way up the bikeway this morning. An oncoming rider called me a 'bike frog'.

Thinking of Brendan (I think it was Brendan), I retrieved some 3-in-1 oil from a toolbox at work at applied liberally to the crevices between crank and BB shell. Spun the cranks a bit. And voila.

My evening ride around CP was lovely. . . and I could hear the crickets singing in the grass.
David, as far as I can tell the oil drip thing is from me.  I'm glad someone else can verify that it works.  I may need to reapply as there is a slight creak since the very rainy L&C finale.
@yang. I generally have a poor memory of who said what (including myself), so I'm sure you are right.

But I don't expect this to be a real solution. After my ride in the rain yesterday, I can already hear the clicking coming back again. I fully expect to take the BB apart (again) in order to make it happy. I just think it is going to be one of the things to add to my routine maintenance list.
My BB30 has been quiet, with the exception of a few weeks ago. The recent noise was due to my bearings needing to be replaced. So with 5,000 miles on them I swapped them out and I'm back to a quiet BB. Other than that I've never done any maintenance on my BB30.