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Anything else I should know about latex tubes?

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Anything else I should know about latex tubes?

Old 05-07-19, 06:38 PM
  #26  
caloso
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Originally Posted by bbbean View Post
FWIW, my only complaint about latex tubes is that I can't find latex tubes with long valve stems, so I have to use valve extenders on my deep section rims.
I just had this issue.
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Old 05-07-19, 08:33 PM
  #27  
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I don't understand the issue, i always use latex with removable cores and extenders, and keep a long valve butyl spare in the repair kit
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Old 05-07-19, 09:53 PM
  #28  
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Originally Posted by eja_ bottecchia View Post
Check this thread. Good info there.

Fulcrum advises agains latex inner tubes.

OMG, I'm gonna die! I'm running Latex Tubes in 8 sets of either Fulcrum or Campagnolo wheels. Most of which see long climbing rides and fast descents regularly.
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Old 05-07-19, 09:58 PM
  #29  
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I just don't get all the angst over using latex. Been running them in a majority of my wheels for years and it's really just no big deal.

Heck, I even went back and checked my records and I had them in my Madone both years I ran the Tour of Park City. Lot's of fast descending and hard braking on that ride including totally screwing up on the same horseshoe curve both years. The second year was the first time I actually saw smoke coming off my rim brakes as I overcooked the turn again. I survived and so did the latex tubes.
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Old 05-08-19, 04:10 AM
  #30  
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Oh great. Now not only do we have to worry about crabon fiber asploding but our latex tubes too!
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Old 05-08-19, 06:44 AM
  #31  
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Originally Posted by Sy Reene View Post
The rollingresistance.com website doesn't use a smooth roller AFAIK and generally speaking, the higher the PSI, the less rolling resistance for almost any tire you look at.
I think thats right. If i'm not mistaken, it uses like a diamond tread steel drum...kinda like what you would see on industrial staircases.

I'm sort of surprised nobody has taken a molding of an asphalt road somewhere and rolled it up into a cylinder. It really cant be that complicated.

Regardless...I think the steel drum the site uses, while not smooth, is still MOSTLY smooth, and would probably be kinder to higher pressures than a road would. Of course thats all speculation though.

The pressure comparisons should probably be taken with a hefty grain of salt. The tire comparisons though should be pretty spot on.
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Old 05-08-19, 07:34 AM
  #32  
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Originally Posted by datlas View Post
Oh great. Now not only do we have to worry about crabon fiber asploding but our latex tubes too!
So carbon + latex = instant death??
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Old 05-08-19, 08:16 AM
  #33  
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Originally Posted by Rides4Beer View Post
First ride went really well. Picked up .8mph on three loops of the 7 mile TT loop I rode on Saturday (23.6 vs 24.4 avg). Can def feel the difference with the latex tubes and GPTT tires. I even set a new single loop PR, and my previous PR was set on a group ride, felt good to beat it solo. I also understand that since I'm still fairly new to cycling, my bike fitness is still improving, so that's prob part of it too.
Your improving fitness is most of any change you noticed. Latex tubes might get you a few watts which won't result in anything close to .8mph. Going from 23.6 to 24.4 requires about 10% extra power which latex won't provide.

If you're going to do comparisons between butyl and latex or latex at different tire pressures it takes careful measurements under controlled conditions as the differences are relatively small.
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Old 05-08-19, 08:39 AM
  #34  
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Originally Posted by gregf83 View Post
Your improving fitness is most of any change you noticed. Latex tubes might get you a few watts which won't result in anything close to .8mph. Going from 23.6 to 24.4 requires about 10% extra power which latex won't provide.

If you're going to do comparisons between butyl and latex or latex at different tire pressures it takes careful measurements under controlled conditions as the differences are relatively small.
My improving fitness comment was in regards to my new PR. My 23.6 vs 24.4 rides were two days apart. Altho, the faster ride was shorter, 21 vs 35 miles (same 7 mile loop, 3 laps vs 5), but it was also in the evening after work so I was tired and it was hotter (35 mile ride was first thing Sat morning). There's also the psychological effect, maybe I was riding harder because I was feeling good about the new tires/tubes (I also switched to Conti TT tires at the same time)? Looking at BRR, it's about a 10w gain for tires & tubes together.

Def not a scientific comparison, but they're def faster/smoother, by how much is always debatable.
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Old 05-08-19, 09:32 AM
  #35  
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Originally Posted by Rides4Beer View Post
My improving fitness comment was in regards to my new PR. My 23.6 vs 24.4 rides were two days apart. Altho, the faster ride was shorter, 21 vs 35 miles (same 7 mile loop, 3 laps vs 5), but it was also in the evening after work so I was tired and it was hotter (35 mile ride was first thing Sat morning). There's also the psychological effect, maybe I was riding harder because I was feeling good about the new tires/tubes (I also switched to Conti TT tires at the same time)? Looking at BRR, it's about a 10w gain for tires & tubes together.

Def not a scientific comparison, but they're def faster/smoother, by how much is always debatable.
So, you changed both tires and tubes at the same time. This makes it impossible to tell which made the bigger difference. My guess is that the tires were more significant to your improvement
As for latex inner tubes, my Michelin latex tubes have been just fine for everyday riding. Not knowing any better, I installed them exactly the same way I did for butyl inner tubes. They hold air pretty well, I can ride them a second day without needing to reinflate. As for durability, about 4 years with no flats, they actually have outlasted a couple of sets of tires.
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Old 05-08-19, 10:40 AM
  #36  
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Originally Posted by Rides4Beer View Post
So carbon + latex = instant death??
Yes. I die a little on every ride.
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Old 05-08-19, 10:53 AM
  #37  
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Originally Posted by Sy Reene View Post
The rollingresistance.com website doesn't use a smooth roller AFAIK and generally speaking, the higher the PSI, the less rolling resistance for almost any tire you look at.


Why so many folks are running 130psi these days...
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Old 05-08-19, 11:14 AM
  #38  
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Originally Posted by alcjphil View Post
So, you changed both tires and tubes at the same time. This makes it impossible to tell which made the bigger difference. My guess is that the tires were more significant to your improvement
As for latex inner tubes, my Michelin latex tubes have been just fine for everyday riding. Not knowing any better, I installed them exactly the same way I did for butyl inner tubes. They hold air pretty well, I can ride them a second day without needing to reinflate. As for durability, about 4 years with no flats, they actually have outlasted a couple of sets of tires.
Yeah, def no way to tell which one made the bigger difference, but as a package, they work very well together. My only real questions were regarding the tubes, since they were an unknown for me. Nothing to worry about with the tires, except that they don't offer as much puncture protection, but that's the price you pay for speed.


First race of the summer TT series tomorrow night, hoping to avg over 25mph, we'll see how it goes. It's a 10 mile course, on the same loop I did my test runs on, but out and back instead of the full 7 mile loop, so I guess it'll depend on how fast I can get through the turnaround. I don't have a power meter, so I'll go hard on the way out, but not all out, and then burn everything I have left on the way back. In running at least, I always like an out and back, something clicks in your head when you know you're on the way back.
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Old 05-09-19, 12:05 PM
  #39  
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Originally Posted by Racing Dan View Post
You should know latex degrades gradually and is susceptible to various solvents and oils. Butyl is not. I can recommend light 80 g butyl tubes. Seems less finicky to me.
The point of latex is not low weight. It's rolling reaistance.
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Old 05-09-19, 12:38 PM
  #40  
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Originally Posted by Rides4Beer View Post
Yeah, def no way to tell which one made the bigger difference, but as a package, they work very well together. My only real questions were regarding the tubes, since they were an unknown for me.Nothing to worry about with the tires, except that they don't offer as much puncture protection, but that's the price you pay for speed.
Why not use GP5000 tubeless?
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Old 05-09-19, 01:58 PM
  #41  
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Originally Posted by noodle soup View Post
Why not use GP5000 tubeless?
Don't want to mess with tubeless. Plus the CRR is still lower with the TT tires and latex.
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Old 05-09-19, 02:11 PM
  #42  
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Originally Posted by Rides4Beer View Post
Don't want to mess with tubeless. Plus the CRR is still lower with the TT tires and latex.
That's not what I saw on BRR.com, but I don't think they test with latex tubes.

I understand your trepidation with tubeless. I tried it 5 years ago, and it just seemed like a big expensive hassle, but now I'm sold on it.
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Old 05-09-19, 02:20 PM
  #43  
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Thanks for this thread. I'm starting to use latex and the observations by experienced users were quite helpful.
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Old 05-09-19, 07:22 PM
  #44  
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Originally Posted by noodle soup View Post
That's not what I saw on BRR.com, but I don't think they test with latex tubes.

I understand your trepidation with tubeless. I tried it 5 years ago, and it just seemed like a big expensive hassle, but now I'm sold on it.
They did a test with the GP4K and latex tubes and it was about 2w better than the butyl tubes. Going off of that, latex tubes with the TT tires puts it about .5w better than the GP5KTL. Splitting hairs at that point, but the TT tire with a latex tube is probably one of the fastest clincher setups available so I figured I'd go with that since I'm not ready for tubeless yet. I'm where you were 5 years ago, just seems like a lot of hassle, maybe I'll give it a try on one of my other wheelsets, all three are tubeless compatible, so that's good at least.

If anyone is curious, I raced very poorly tonight lol It was my first TT and I redlined right out of the gate and blew up spectacularly But the tires/tubes performed great!
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Old 05-09-19, 07:28 PM
  #45  
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Originally Posted by Rides4Beer View Post
If anyone is curious, I raced very poorly tonight lol It was my first TT and I redlined right out of the gate and blew up spectacularly
Been there, done that.

It's hard to start your first few TTs, without charging out like your balls are on fire.
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Old 05-10-19, 05:04 AM
  #46  
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Originally Posted by noodle soup View Post
Been there, done that.

It's hard to start your first few TTs, without charging out like your balls are on fire.
The good thing is that I can only improve from here! Plus it's nice that it's a local series, so I can train on the course. Looking forward to doing better next month!
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Old 05-10-19, 06:32 AM
  #47  
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They're pink. When you flat out and everyone sees that pink tube they'll make fun of you.

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Old 05-10-19, 06:35 AM
  #48  
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Originally Posted by dmanthree View Post
They're pink. When you flat out and everyone sees that pink tube they'll make fun of you.

Michelins are celeste, if color matters.
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Old 05-10-19, 07:11 AM
  #49  
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Originally Posted by dmanthree View Post
They're pink. When you flat out and everyone sees that pink tube they'll make fun of you.

I'm safe, mine are green
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Old 05-10-19, 07:58 AM
  #50  
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It Matters

Originally Posted by datlas View Post
Michelins are celeste, if color matters.
Ah. The color of the Milan sky.

Acceptable.
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