Swim Bike Run
Slowtwitch.com
  • Login >
Slowtwitch.com
Search menu
Hot Forum Topics

Poll

Best Recent Tech for Tri
What is the most beneficial recent bike tech used in tri bikes
View Results


Home > Forum > Triathlon Forum > What makes latex tubes faster than rubber tubes?

Triathlon Forum

Back To ForumPrint Thread

Login required to started new threads

Login required to post replies

Tri
Classifieds
Lavender
Jobs
Notices
What makes latex tubes faster than rubber tubes?
Quote | Reply
lifejustice
Aug 21, 18 8:21
Post #1 of 9 (1331 views)
I am buying new tubes for my bike. I keep seeing "Latex will save you 5W".

I am curious by this, as the tubes themselves aren't making contact with the road, nor are they a mechanical part. What makes them faster?
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [lifejustice] [ In reply to ]
Quote | Reply
stevej
Aug 21, 18 8:32
Post #2 of 9 (1298 views)
https://www.youtube.com/watch?v=XUpq27mG2CM
blog
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [lifejustice] [ In reply to ]
Quote | Reply
Brushman
Aug 21, 18 8:35
Post #3 of 9 (1289 views)
Here's a start for you...

https://www.cyclingweekly.com/...-worth-hassle-282066

https://road.cc/...ter-or-prevent-flats

https://www.youtube.com/watch?v=HesRAn5qpCU
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [lifejustice] [ In reply to ]
Quote | Reply
Ai_1
Aug 21, 18 9:53
Post #4 of 9 (1154 views)
lifejustice wrote:
I am buying new tubes for my bike. I keep seeing "Latex will save you 5W".

I am curious by this, as the tubes themselves aren't making contact with the road, nor are they a mechanical part. What makes them faster?
It's not contact with the road that matters. It's efficiency in energy required to deform and/or energy returned when shape is restored. The tube deforms just as the tyre does.
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [lifejustice] [ In reply to ]
Quote | Reply
Khilgendorf
Aug 21, 18 9:53
Post #5 of 9 (1154 views)
Don't even need to leave ST:

https://www.slowtwitch.com/Tech/What_s_in_a_tube__1034.html


Short answer: hysteresis
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [Brushman] [ In reply to ]
Quote | Reply
dunno
Aug 21, 18 10:00
Post #6 of 9 (1134 views)
5 watts per wheel! That’s insane!!!
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [dunno] [ In reply to ]
Quote | Reply
avatar78
Aug 21, 18 14:40
Post #7 of 9 (959 views)
Just curious, are latex tubes actually latex? That is, can someone with a latex allergy use them?
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [lifejustice] [ In reply to ]
Quote | Reply
gary p
Aug 21, 18 15:13
Post #8 of 9 (904 views)
lifejustice wrote:
I am buying new tubes for my bike. I keep seeing "Latex will save you 5W".

I am curious by this, as the tubes themselves aren't making contact with the road, nor are they a mechanical part. What makes them faster?

More like 1.5 watts each, or 3 watts for the pair. But 3 watts is 3 watts!
"They're made of latex, not nitroglycerin"
Quote Reply
Re: What makes latex tubes faster than rubber tubes? [gary p] [ In reply to ]
Quote | Reply
Tom A.
Aug 21, 18 15:19
Post #9 of 9 (884 views)
gary p wrote:
lifejustice wrote:
I am buying new tubes for my bike. I keep seeing "Latex will save you 5W".

I am curious by this, as the tubes themselves aren't making contact with the road, nor are they a mechanical part. What makes them faster?


More like 1.5 watts each, or 3 watts for the pair. But 3 watts is 3 watts!

I typically see ~3W per tire "road equivalent" power between butyl and latex tubes in a low Crr tire. Al Morrison recorded ~the same.

Jarno's (BRR) testing results aren't translated into "flat surface equivalent on typical road roughness" values. They're just the raw values for the particular drum size and surface roughness (relatively smooth diamond plate) used in his fixture.
http://bikeblather.blogspot.com/
Quote Reply
Back To ForumPrint Thread

Our Partners

transition-DOT-area-AT-slowtwitch-DOT-com

Advertise with us

©1999-2024 Slowtwitch, Inc., and Slowtwitch.com
Reproduction of material from any Slowtwitch.com page
without written permission is strictly prohibited.