Kissena Forum Archive

Bicycle Tech/Gear Discussion Thread

8105 comments · 108281 views
Love the dudes aero haircut :)

The bike looks incredible
He's built some absolutely stunning Look and Time bikes on his channel and it doesn't hurt he seems like an amazing mechanic
@DavidVibert FYI Rema Tip Top make a special patch kit for tubeless tires if you are worried about the gash being larger than sealant will fix. 

https://www.rematiptop.com/products/automotive/tube-repair-kits/tubeless-repair-kits/tubeless-repair-kit-5060160.html

The Escape Collective podcast with Zipp is worth a listen if you're worried about hookless rim design: https://share.transistor.fm/s/a770e863
Bottom bracket standards are fing trash and I hate everything.

I need yet another tool.


Just think of them like pokemon cards... gotta collect em all!
But seriously between all of us I'm sure we have all the bb tools we need. I'm happy to participate in some sort of coop tool chest, esp for these random one off tools that are rarely used.
What tool do you need specifically?  I've got a BB tool that look like it might work but I'll have to check.
same question, I do in fact have a good amount of bb notch tools — but no idea if any works for you, maybe bring the bb to prospect park? 
Hookless

https://youtu.be/rgra7i7i_-I?si=40z8e4boqGAHYmPF
Thanks Eloy and Greg, I ordered a 12 spline "cinch" bb tool which just matches up to the splines on the external cups of this one. Not sure how popular it is but now one of us has it if they come across one on a bike they're working on.
New Red is around the corner 


The new REd levers look like an update of the ill-fated Rotor hydraulic brake levers.  


What cracked fork blade? https://www.youtube.com/watch?v=6AY1krjGtG4
(baking soda works too) 
Big day for SRAM announcements:
https://www.youtube.com/watch?v=8iH0gDarbjY 

https://www.youtube.com/watch?v=V0buMhi9bsM

https://www.youtube.com/watch?v=6znJ-qHvXa0
hammerhead has a companion app :o
Strava upping their marketing game a notch or two 

https://youtu.be/7CrTz0cmzq8?si=5dDO77WfmAs925y5
DC Rainmaker talks about more new features, looks good: https://youtu.be/u-ocI8NHJ94?si=4t8XcvIBqgxH0KZI
Kona is bought back by its founders: https://www.cyclingweekly.com/news/kona-founders-buy-back-the-brand-return-it-to-being-rider-owned-and-operated
This is fascinating to me.  

I wouldn't think that the founders got rich off of selling Kona.  And the bike company seemed to be hanging on by a thread.  So, did Kent Outdoors sell it back as a loss?  And where did the founders get the money?  I don't see buying a bike company as a good looking investment these days.
This could involve a deal with creditors and suppliers (who don’t really have anything to lose here compared to the company failing right now) that believe the founders will do a better job managing it. Not doing their own b2c will save a lot of money so probably their cashflow will improve.
Di2 arguments 
this only took about two hours to fish out of the shifter 



Ouch
wireless suddenly seems so much better.

Did you have the shifter off the bike, and it still took that time?
Had an interesting tubeless experience to share. I was not able to remove one of my WTB gravel tires off my Roval wheel. One bead popped off easily but the other was stuck so hard both my thumbs were bleeding at the nails from pushing so hard. This was clearly not the correct technique. Most likely the sealant had “glued” the bead in place? Sounds sorta crazy, but that’s what I found on Rredit. 

I also found a solution: place a book under the rim, step on the deflated tire and pull up on the rim to get the leverage to pop the tire bead away from the rim. Worked like a charm. Just remove the rotor first so you don’t accidentally bend it 
mugwump said:
wireless suddenly seems so much better.

Did you have the shifter off the bike, and it still took that time?
Is it possible I exaggerated for dramatic effect...? Time includes multiple attempts to not fully remove the shifter and figure out what is going on... once I decided to remove the shifter and actually unscrew open the shifter mechanism the broken cable was just there hanging out... 
Has anyone ever heard of Venn Wheels? A bike YouTube I follow posted a built up set and they seem like pretty decent value for money 

https://www.venn-cycling.com/?v=7516fd43adaa
I'm about to replace the Conti' GP 4000 tires on my race wheels with the newer 5000.
Is there any difference, in terms of rolling resistance, weight, durability, between the different sidewalls?

I thought I read that the cream sidewalls might be heavier, but I haven't been able to confirm anything other than the advertised weight of the cream is 30g heavier than the advertised weight of the "natural" or "transparent" in the 25mm version.  
I would check out BicycleRollingResistance.com. They let you compare different tires and include tan vs. black sidewalls https://www.bicyclerollingresistance.com/road-bike-reviews/compare/continental-grand-prix-5000-s-tr-28-vs-continental-grand-prix-5000-s-tr-transparent-28
Has anyone ever heard of Venn Wheels? A bike YouTube I follow posted a built up set and they seem like pretty decent value for money 

https://www.venn-cycling.com/?v=7516fd43adaa
Who’s the youtuber? 

in any case, at those prices Hunt wheels seems like a more reliable choice