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SHIMANO Altus - Desviador delantero para bicicleta de montaña, con abrazadera múltiple

Envío gratis en pedidos superiores a Mex $600.00

Mex $300.00

Mex $ 150 .00 Mex $150.00

En stock

1.Tamaño:28.6-34.9-mm 3x7/8 Speed Hi-clamp


Acerca de este artículo

  • Doble o triple montaña
  • Diseño de doble tiro: compatible con enrutamiento superior o inferior
  • Shimano Número de referencia: FD-M311


El desviador delantero Shimano Altus se adapta a trenes de transmisión dobles o triples, enrutamiento de cable superior o inferior y diámetros de tubo de asiento 28.6-34.9.


Nimbe Bonilla
Comentado en México el 14 de marzo de 2025
Llegó en buen estado.
Agustín Mederos
Comentado en los Estados Unidos el 12 de febrero de 2025
Price vs Quality 100%
Gene
Comentado en Canadá el 18 de agosto de 2022
Exactly what I expected with
Genaro H.
Comentado en México el 1 de junio de 2022
Buena calidad aunque venia en una bolsa
Marcos L.
Comentado en México el 27 de octubre de 2022
Todo bien excepto que no sirve para tubo de 26.8mm. tuve que usar un adaptador para fijarlo. Por lo demás, todo muy bien.
SC
Comentado en los Estados Unidos el 27 de agosto de 2021
An older relative of mine had a Next Power Climber, couldn't stand how it shifted and asked me if I could tune it. Unfortunately, no matter what I did with the stock derailleurs and shifters on the Next, it wouldn't shift consistently.I swapped out the rear derailleur for an old Tourney I had laying around, put Microshift grip shifters on it and got the rear shifting working perfectly. But the 3 speed front chain wheel was still a train wreck and my relative wasn't going to spend anymore money on the bike.I did a little research and found that this Altus should work on the 2003 21 speed GT Palomar that I was restoring and that it should be an upgrade to the stock Tourney that was on the bike.So, the Next got the Tourney from the GT and my GT got this Altus.Win/win. My relatives Next now hits all 18 gears perfectly and I've got a heavier built, better shifting front derailleur on my GT.The first picture is the stock Tourney TY-32 and KMC Z chain. The second picture is the Altus and X8.99 chain. As you can see the Tourney is noticeably longer and slimmer. The Altus is thicker, and has a sturdier feel.The Altus arrives in the stock Shimano box, with spacers for 31.6 and 28.6 installations. Mine was a 28.6 and the installation and set up was easy.Will your bicycle suddenly become a fast shifting, performance machine? No.Will you notice a difference? I did. This Altus has been a noticeable upgrade from the stock Tourney.My GT has Microshift shifters and the Altus hits the front chain wheel gears more smoothly than the Tourney did. It will also shift easily the first to the third chain ring in one twist of the grip shift.Like all derailleurs, it doesn't like to be under full load when changing gears, but performs better than the Tourney under a light load.When I made the derailleur swap, I also went from the stock Z to a KMC 8.99 chain which made an unexpected improvement in the drive train and shifting on my GT as well. I never figured a chain would be a big deal, but this one is noticeably smoother shifting.If you've never changed a derailleur or adjusted one, do a search and watch one of the many videos. Park Tool has an excellent video about front and rear derailleurs. That video helped me dial in these two bikes so they ride better than when they were new.Hope this helps and ride safe.
Theysaid
Comentado en los Estados Unidos el 27 de abril de 2013
This was installed on an old bicycle and works well on a front crank with 28 - 38 - 48 teeth.. I work on lots of bikes and recently installed a Shimano ALIVIO front derailleur on another bike.. Comparing the two I can't see a difference between the AULTUS and the ALIVIO though I think one cost a little less than the other..My bike tube was small so I had to use the thin shims.. They come with shims of different thicknesses. Those fit into the holding bracket and due to the way the bracket are built the shims aren't ugly..They are a little tricky to hold in place while you install the Aultus.. I found it's best to lay by bike on the side which makes it easier...If you buy one of the small cheap poly tarps and lay the bike on the tarp on the left side you can work on the bike outdoors and not fear loosing parts or tools. I sit on the tarp while I work..I have bike work stands but most often I love to work on the tarp out doors for installing parts then set the bike up for adjustments..You will need a chain break tool to install this because you MUST open the chain insert it through the cage and reconnect. Do not get a cheap tool IF you expect to open the chain more than a couple of times with it..Most don't work well for very long..The 4 dollar chain break tool at Wallyworld worked for me about 4 times before the push pin bent. A bent push pin means a damaged chain side plate is about to happen..If you have an old chain left over keep it, or parts of it, and you will have a few side plates handy..Once in a while you may mess up a side plate using even good tools, (see my othe reviews for good chain tools). If the link pin goes back in crooked and dings the hole in the side plate DO NOT use that chain with the damaged side plate. It may break going up a hill with you standing on the peddles. If that happens I HOPE you are wearing a helmet.I hope you wear a helmet at all times anyway...To install this unit find an ole wire coat hanger or a piece of wire that you can use to tie the chain into a loop. Cut it 8 to 10 inches long and bend the ends into hooks. Lay it aside to use later..Before you start working shift to the small gear up front and the smallest gear on the rear so the chain is at it's loosest..Lay the bike on it's side then drop the chain OFF the small gear and let it lay on the bike bottom bracket. Pull the chain into a loop, it will have tension from the Rear Derailleur, make sure the loop of loose chain is located at the front of the bike around the front Derailleur. It must be loose at the front Derailleur. Using shoe laces, string, or a short wire tie the chain so the loop will allow you to break the chain releasing the cage of the Derailleur. The chain pin may not allow you to pull the chain through the Deraileur so make sure the pin side of the chain is near the back side of the F Derailleur closer to the back tire.. Slid the chain out of the old Derailleur and remove the derailleur. Thread the chain through the new F Derailleur making sure it's lined up so the Drailleur is facing the right direction and not upside down..temporarly attach the derailleur to the bike so the chain to thread through the cage then gently work the chain FORWARD until the break ( tied part ) is at the bottom of the bike near the crank but not exactly under it. TO pull the chain forward I gently roll the rear wheel by hand while pulling on the chain or I remove the chain (by hand) off the rear gear and work it forward that way..This works if the bike is laying on it's side. Do not put the chain on front gears yet let it slip forward. When the open but still connected disconnected part of the chain is at the bottom of the bike chain ring HOOK one end of your wire hook into one side of the chain and use pliers to slightly bend it some more so it don't slip out..PULL a loop in the chain and hook other end. You should have a big loop of chain with the Tied part in the center of the big loose loop..Cut the shoe string and remove it or untie the chain at the break....The wire hooks should be holding the chain forming a loop that you can work with..If you pull that loop toward you it will be easy access to reconnect the chain..IF the link pin is sticking out from the bottom of the chain and hard to line up with your chain tool pin you may be able to use big pliers on the pin head and push it back into the chain staring it that way. It will pop in almost all way to the side plate.. Easy trick, smile..Once the pin is in the chain use chain tool to set the pin properly into the side plate..Carefully pus pin one tiny little bit TO far through side plate on your side of chain. Just a tiny little bit to far.. NOW use the chain tool on your side of the chain to loosen the link by pushing the pin back in just a tiny little bit. On some chains the pin sits flush with the side plate. If yours sticks out some make sure it's sticking out the same amount on both side plates. IF you have never used a chain tool before go to U tube and learn how to use it to loosen a tight chain link after the chain has been assembled..MAKE sure you can see the side plate that the pin must go back into and work it slowly in making sure the chain link pin is going STRAIGHT through the side plate hole. IF you damage a side plate you need to remove it and put another side plate on the chain. YES you can use side plates off of different brands of chains, and even old worn out chains as long as the LINK PIN HOLE is the same size around and the chain is of the same size and type. Side plates seldom if ever stretch....Most side link pin holes are the same size but some may differ. You can use a flaired side plate(some chains have curved side plates for smoother shifting) on one side and one flat side plate on the other side of the chain. It will work. Side plates seldom wear out so I use what is on hand and yes I make mistakes too..Chain side plates can be damaged quiet easily if you get in a hurry. IF you accidently push the chain pin ALL way OUT of your chain..Do not panic.. Chain Pins can be reinserted using BIG water Pump type of Pliers and maybe other pliers to push them in far enough to get them started again. If you have trouble keeping the pin lined up in the hole of the side plate use needle nose plires to hold them in place while you put force on them with the big pliers. Fingers don't work well and get mashed...Practice this on an old chain and your life will be happier in the future..For more help email me at chiefredelk at gmail dot com.....Good luck, YOU can do this you know you can.. Be Blessed, Chief
Vulcan2230
Comentado en los Estados Unidos el 6 de abril de 2013
I bought this tool and it came in a brand new sealed package. In it where adjusters to make it fit my tube. I would recommend measuring your tube before. Luckily this one came with 2 sets of adjusters. I had to wrestle it on but now that its there, it has performed flawlessly. It's heavier than the one it replaced and it seems to be over engineered which is great. I wouldn't want to be 10 miles down the road and lose my front derailleur. Can't see myself replacing this one but if I do, it will be with the same product.
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