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Granny Gear Cassette for a Bianchi Volpe

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Granny Gear Cassette for a Bianchi Volpe

Old 07-28-20, 04:17 PM
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Gyro_T
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Granny Gear Cassette for a Bianchi Volpe

I gave my son-in-law a Bianchi Volpe for his birthday a few years back. He complains that everyone has lower gears than he does after our recent family vacation. The 9 speed cassette is only 25t for low gear. It has a long cage Tiagra derailleur and a triple crankset. I would like to ask my LBS to order a larger cassette, and would like to push it up to 36 if possible. Any suggestions are appreciated.
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Old 07-28-20, 04:43 PM
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You could put a mtb derailer and run 11-36 or 11-40 or use a road link with your existing derailer.
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Old 07-28-20, 05:39 PM
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IIRC the 9 speed MTB RDs max at 34T. With the triple crank he probably has a 30T or even 26T small ring. If that's not enough with the 34T cassette, he needs to order more salads
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Old 07-28-20, 05:40 PM
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You will probably need a longer chain, but it is a good idea anyway to mate a new cassette with a new chain. Keep the old ones together as a set in case he wants to go back.
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Old 07-28-20, 06:38 PM
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Long cage tiagra will do an 11-32 with a triple and new chain, you can do an 11-36 with a long cage 9 sp Shimano MTB rear derailleur. You can also try replacing the smallest chainring with as small as a 24t which might shift a little worse but should work OK, particularly if the bike is friction shifted.
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Old 07-28-20, 11:17 PM
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Thanks to you all for the replies. I have looked for and found an Alivio 11-34 cassette for around $25 which seems pretty cheap. I can ask the LBS to verify that the Alivio will fit on the Tiagra hub/freebody. I would go that route first since he does not ride much. I will look into a little smaller ring in front just in case. As usual, you have been a great resource.

MB (Gyro T Gearloose)
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Old 07-29-20, 12:09 AM
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Originally Posted by Gyro_T View Post
Thanks to you all for the replies. I have looked for and found an Alivio 11-34 cassette for around $25 which seems pretty cheap. I can ask the LBS to verify that the Alivio will fit on the Tiagra hub/freebody. I would go that route first since he does not ride much. I will look into a little smaller ring in front just in case. As usual, you have been a great resource.

MB (Gyro T Gearloose)
That cassette will definitely fit the hub body fine. You will need a new chain, and that exceeds the official max size for that Tiagra derailleur but will probably work OK.
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Old 07-29-20, 07:52 AM
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Shimano used to have a Mega range freewheel & cassette... last cog a 34, next to last a 24 ... they were from back before the 1 by craze

with cassette cogs the size of big chainrings..
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