You are a JSON assistant. You only reply in valid JSON and never in normal text. Asigne un nivel de dificultad a la informaci�n del video proporcionada a continuaci�n. La salida debe ser una �nica propiedad llamada "result" con un valor de punto flotante entre 0 y 1. Los niveles de dificultad se categorizan de la siguiente manera: 
0.0 - Completo Principiante: Este nivel incluye vocabulario muy b�sico y frases simples, acompa�adas de visuales y contexto claros, lo que lo hace adecuado para individuos sin conocimientos previos del idioma objetivo. 
0.3 - Principiante: Este nivel presenta oraciones simples y vocabulario de uso com�n. El video puede proporcionar algunos recursos visuales y contexto para ayudar con la comprensi�n. 
0.5 - Intermedio: Este nivel presenta oraciones m�s complejas y un rango de vocabulario m�s amplio. Puede incluir algunas expresiones idiom�ticas que requieren conocimientos adicionales de fondo. 
0.6 - Intermedio Superior: Este nivel incluye vocabulario especializado y conceptos relevantes para campos espec�ficos. Los espectadores deben tener una competencia razonable en el idioma objetivo para una comprensi�n completa. 
0.8 - Avanzado: Este nivel utiliza vocabulario avanzado y estructuras de oraciones intrincadas, potencialmente involucrando discusiones matizadas que requieren un fuerte dominio del idioma. 
1 - Muy Avanzado: Este nivel est� dirigido a hablantes fluidos, incorporando terminolog�a y conceptos especializados que pueden no ser familiares para todos los hablantes nativos.
 Description: we&#39;re going to change a bicycle [Music] tire hello and welcome welcome to input English so today&#39;s episode is in preparation for a future trip to San Francisco many times when you go to San Francisco you drive to your destination other times you could take BART and use the public transit system which in San Francisco is excellent but there are some places in this area where a bicycle would be useful and one of those is our trip to Angel Island Angel Island doesn&#39;t have cars I can&#39;t drive there I can go there on a ferry and I can walk around or I can take a bicycle with me you can also rent bicycles once you&#39;re at Angel Island so I have a bicycle it&#39;s Compact and indeed it is foldable so it&#39;s ideal for this kind of a trip but the catch on this bicycle is I have not used it in many years partially owing to the pandemic it has been sitting and sitting and sitting so a bicycle that&#39;s kept indoors particularly in the dry uh climate of California the metal parts are not going to deteriorate they might get Dusty they might get spiderwebs on them but they&#39;re not going to deteriorate other things can deteriorate and the thing I worry about is the tires and the tube I did a thought experiment I thought about how it would be visiting Angel Island making video showing you around with a bicycle and what came to mind is the distinct possibility that I would get a flat tire and have to push the bicycle around coming back to the ferry that would be Dreadful so you in preparation for this visit to Angel Island I&#39;m going to change the tires on the bicycle so I invite you to join me on that little chore you may be familiar with it of course we are making comprehensible input so the discussion will anchor this English language discussion to things that you can see and interpret bicycle tires come in many types the most common bicycle tire that I have ever seen is a tire with an inner tube and the inner tube has a shraer valve the shraer valve is the port into which you put the compressed air to inflate the tire and shraer valve is used for automotive tires and it&#39;s used for a lot of bicycle tires there are other valves used for bicycle tires Presta tire valves are used on some bicycles and have some popularity my tire has a shraer valve there&#39;s a third type of valve called a Dunlop and I have never seen one so we&#39;re going to change the tire we&#39;re going to change the inner tube and I&#39;m going to inflate it in anticipation of our trip now my bicycle has two wheels I&#39;m going to demonstrate changing the tire on one of them and you can assume that changing the tire on the other one will be substantially the same I have my safety glasses on I found them these safety glasses I&#39;ve had for a number of years they have a prescription in them so they&#39;re very easy for me to see what I&#39;m doing uh but they have eye protection and they are good for our purposes so safety glasses are in place and I have my tire now this tire or this wheel rather this wheel has a quick release and if you have a tire or wheel assembly like this that is not on the bicycle the question is what&#39;s the right and what&#39;s the left side there is a convention if your tire has a quick release that goes on the left side so you may assume that this wheel turns this way so I&#39;m going to remove this tire remove the inner tube and then we&#39;ll put the new one on okay if we&#39;re going to change a tire we need the wheel assembly with the tire we&#39;re going to remove so that&#39;s so that&#39;s one of the things we need but we need other things I need some tools now these are levers for removing the tire from the rim they come usually in a set of three so I have my three levers what else do I need well I need need the new tire so I have that and it&#39;s the correct size so I also have the inner tube here so all the parts I need are in place so let&#39;s get started the first thing I do is deflate the tire but it&#39;s already deflated there&#39;s no compressed air in the tire it is not inflated the lever gets placed over the rim and under the bead this lever set has a feature that the other end has a hook and that hooks the spoke so this is in place it will not need me to hold it in place so now working from the so now working from the lever that I have in place you can see that this is just zipping right off this is not difficult so now we have the first bead broken loose from the rim and I have the inner tube here so I can pull the inner tube out if you&#39;re just changing the inner tube you really don&#39;t have to take the tire completely off you can but this in tube is easy to remove so now I have the inner tube out so now it&#39;s just a matter of getting the tire off the rim and this is usually not very difficult so now I&#39;ve dismounted the tire this is the old Tire looks okay but given how old it is I don&#39;t judge that it is trustworthy I don&#39;t want to take it on a trip and wind up stranded so it&#39;s off I checked the rim the rim runs true as I let it rotate holding the bearing it&#39;s not wobbling there are no Nicks in the room it&#39;s not off of round it looks fine and that makes sense because I&#39;ve never damaged this rim or Tire in the past it just got old so the next thing I need to do is get the new inner tube and the new tire we&#39;ve established this is the this is the left side and so the rotation is this way in this projection counterclockwise so I&#39;m going to pull up the new tire and match it so this says rotation and the arrow points that way so this tire mounts like this so now I have one of the beads inside the rim and we&#39;re ready to put in the inner tube now this inner tube is flat it&#39;s right out of the box and it has no air in it so I&#39;m going to use the bicycle pump to put a little bit of air in it so that I can have a little bit of form and be able to maneuver it into place so I&#39;ve used the bicycle pump to put enough air in this that it is easier to manage this is the valve stem it has a shraer valve and I need to put it through the hole in the rim so now it is just a matter of tucking the inner tube into the tire without twisting it and without using any sharp tools that would puncture it I&#39;m going to put the valve stem cover back on it just to keep it from coming out now it&#39;s important that the valve stem be perpendicular you don&#39;t want it at an angle and we&#39;ll set that when we inflate it to make sure it is correct so now we have one bead is inside the rim the other bead is outside the rim and the entire inner tube is inside the tire so now it is just a matter of mounting the second bead to the rim for this part you don&#39;t really need tools so to review we removed the tire and the inner tube I inspected the rim and it looked fine there were no repairs needed for the rim I established the direction of rotation because the convention for quick release is that&#39;s on the left side most people get on bicycles from the left side of the bicycle swinging their right leg over and so the convention is quick releas is usually on the left side side that establishes the direction of rotation this way the tire has a mark right here that says rotation pointing that way and so I matched that I remounted the first Rim I put the inner tube in having put a little bit of air in it so it was more sausage like rather than flat the flat inner tube right out of the box is pretty much impossible to manage but putting a little bit of air in it with the tire pump made it super easy I wanted to make sure that this valve is perpendicular to the rim you don&#39;t want it at an angle because that can cause a valve stem failure as you write it over time uh then I used the um levers the tire levers to put the second rim on and once it was completely seated all around and I was sure that the uh valve stem was perpendicular I pumped it up a little bit inspected it and then brought it up to pressure I put 60 PBS per square inch in it which is well within the specified range of pressures for this tire so we have a new tire on our front wheel and then I will do the other one it&#39;s going to be just like take this and then we can make sure that the bicycle is properly adjusted it should be because it hasn&#39;t been wrecked or abused it was fine when I put it away so it should be pretty much okay uh I&#39;ll test drive it in the neighborhood and then we&#39;ll take it to Angel Island for our adventure so that&#39;s it for this video I hope you enjoyed this uh if you have any questions or concerns put them in in the comment section below and I look forward to seeing you on future videos [Music] bye oh
Language: en
Title: Let's Change a Bicycle Tire - Learn English in the Shop
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