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Description
Optis Tubeless Tire Insert - 29" x 28-40mm Insert OnlyOPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight, highly tunable, high efficiency, tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground, they serve as a critical first element of the bikes suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikes grip from its suspension
OPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight, highly tunable, high-efficiency, tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground, they serve as a critical first element of the bike’s suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates the function of the bikeʼs grip from its suspension and stability by turning the tire into a two-chamber system. This allows for lower tire pressures while the insert is inflated to a higher pressure than the tire, keeping the tire supported while allowing the main volume to be at a lower pressure that provides optimum grip.- Riders can separately tune the tire's grip and internal support through a dual-valve design, allowing for lower tire pressures and ride characteristics that would not be possible with a traditional tubeless or foam insert set-up
- Instead of forming to the internal tire casing like an ordinary inner tube, OPTIS cinches down against the tire bead and hugs the rim when inflated. This creates a bead lock that prevents burping, protects the rim from impacts and offers a limited amount of run-flat protection when the tire is damaged or punctured
- OPTIS reduces rolling resistance by facilitating the use of lower pressures and lighter tires. Rolling efficiency is greatly improved on rough surfaces without the hysteresis losses often associated with foam inserts
- OPTIS is lightweight, adding less than 90g per wheel to an ordinary tubeless set-up and provides greater protection than traditional inserts that are much heavier
- Valve is constructed from Aluminum, Insert is made from Nylon and TPU (Thermoplastic Polyurethane)
- Designed to fit rims with 28 – 40mm internal width, at a maximum inflation of 50psi
Product Specifics
- Defined Color: Yellow
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: 630950941346
EAN: Not available
Manufacturer Part Number: ODT-502-291
TR00175 630220
195756-Q0-L
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4.2 ★★★★★
Based on 28 reviews
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Product Reviews
★★★★★ 2
It's good for storytelling but has content in stories that's inappropriate in this century
Format: Audiobook
Well modulated interesting and excellent storytelling ability, and skills to teach us of the same. However. I get to the 2nd lesson, it's a book of fiction for the story premise. She describes a woman in her family who can't get pregnant (in the old days), knowing her husband really wants children,and gets happy, as she turns to her "maid" and exclaims that this is alright, he can have a child with their maid! Then the storytelling author, laughs, jokes, about pleasing him and when she says the audience is laughing too, that maybe he can get a 2nd maid pregnant too. Laughing and joking I. The man's eyes as she tells it, about men and their sex drives. I'm not reading g a Victorian romance novel or of the plantation owners in the south, I'm reading a book of lessons on good story telling. This turned me off 500%, and I am done with this author and this book. Is this told by an FDLS polygamist, or ...what? What would make this story in 2013, OK to teach in a college course, or in this book? I don't care if she even made it up for a family old story.
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Reviewed in the United States on January 14, 2025
★★★★★ 5
Five Stars
Format: Paperback
good job
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Reviewed in the United States on July 5, 2018
★★★★★ 4
A Book For Audio
Format: Audiobook
The Art of Storytelling from Parents to Professionals is the first book that I can be confident in saying is better as an audio version than it would be in a paper or Kindle form because you can here the verbal inflections and the storytellers can change character, voice much easier than the printed word might. It also captures the listeners attention as the author herself can connect in a lot more personal and intimate way.
My concern is while I can understand what the author is getting at, I am not aspiring to be an oral performance style storyteller and there was not enough of a reach out from the world of oral storytelling to the written story. I mean how many of us are going to get up on stage and tell stories? I guess you can take the skills from one realm and use them elsewhere, but the connection may not be made so easily.
This was an audiobook that I had a lot of fun with, even if I didn’t quite get what I was hoping for from it.
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Reviewed in the United States on July 10, 2020
★★★★★ 5
Great Overview of the Art of Storytelling
Format: Audiobook
I chanced on this as an Audible "freebie" to keep on the list for when I was out of credits. Well, it's excellent, and well worth the listen. And excellent survey of the topic spanning topics of performance (preparing, voice, body language, projection), various aspects of framing (culture, age, ethnicity, audience size), story structure and so on
This point is for Hannah B. Harvey, if perchance she reads tese reviews. One point of modern storytelling and writing that is not brought out in your lectures, is that some of the best villain/antagonists are actually the heroes/protagonists of their own stories. This is tangentially alluded to in talking about story viewpoints, but not to the extent that it can be an entirely new story, as Wicked and Maleificent turned The Wizard of Oz and Sleeping Beauty on their heads. And even in the 1960's, many a Bond 007 villain was trying to create what they imagined to be a better world. It's useful to consider in storytelling, as far too many people have forgotten/fail to see the fundamental moral ambiguities of life, and I suspect that goes a long way to explaining the extreme partisanship we see in the world today.
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Reviewed in the United States on September 17, 2023
★★★★★ 3
Sadly, I found the tips and the examples in this lecture to be very simplistic and uninspiring.
Format: Audiobook
I expected a professional storyteller to be able to keep my interest but I found the presentation to be quite boring. I got nothing out of it that I didn’t already know from just being an avid reader. It felt like a high school lecture. Sigh!!
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Reviewed in the United States on July 15, 2019
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