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Difference between SRAM PG-1030 11-26T and Shimano (HG500) 12-28T

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Difference between SRAM PG-1030 11-26T and Shimano (HG500) 12-28T

Old 10-05-18, 05:20 PM
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Difference between SRAM PG-1030 11-26T and Shimano (HG500) 12-28T

My bike has over 2100 miles (in one year ) I took it to my local bike shop and they said my chain was stretched out. I had them swap it out with a new one and they put a SRAM PG-1030 11-26T in place of the original Shimano 10Spd (HG500) Tiagra 4700 Cassette 12-28. Will there be much of a difference? Thanks.
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Old 10-05-18, 05:51 PM
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Depending on how sensitive to pedal cadence and efforts, or how steep/long the hills are, one could say either yes or no. The 11-26 will have a higher top and low gear, great if you have a slow cadence and or have small/shallow hills to climb. The 12-28 will be easier to climb long or steeper hills but have less high a top end gear. If you are a rider who rarely shifts then these differences will likely mean less to you. If you tend to shift a lot and like to keep within a narrow cadence then the change likely will mean more.

But you're asking about preference to a degree. So what do you think of the differences? You have ridden the bike since, right?

As an aside- replacing the cassette with a new chain is usually motivated by the wear on the cassette. After 2100 miles the cassette might need replacing if the rider didn't shift much and spend a lot of miles in one cog. (And since a single cog isn't readily replaceable without the entire cassette being done...) This speaks to one of my above points. Did the shop give a reason to replace the cassette? Did they test ride the bike with just then new chain and found under power skip (because of a worn out cog and new chain not meshing)? Do you tend to use just one cog most of the time and is that cog size also in the new cassette? Andy
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Old 10-06-18, 04:07 AM
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Originally Posted by Andrew R Stewart View Post
Depending on how sensitive to pedal cadence and efforts, or how steep/long the hills are, one could say either yes or no. The 11-26 will have a higher top and low gear, great if you have a slow cadence and or have small/shallow hills to climb. The 12-28 will be easier to climb long or steeper hills but have less high a top end gear. If you are a rider who rarely shifts then these differences will likely mean less to you. If you tend to shift a lot and like to keep within a narrow cadence then the change likely will mean more.

But you're asking about preference to a degree. So what do you think of the differences? You have ridden the bike since, right?

As an aside- replacing the cassette with a new chain is usually motivated by the wear on the cassette. After 2100 miles the cassette might need replacing if the rider didn't shift much and spend a lot of miles in one cog. (And since a single cog isn't readily replaceable without the entire cassette being done...) This speaks to one of my above points. Did the shop give a reason to replace the cassette? Did they test ride the bike with just then new chain and found under power skip (because of a worn out cog and new chain not meshing)? Do you tend to use just one cog most of the time and is that cog size also in the new cassette? Andy
Great Reply and Thank You.
Yes I do shift a lot. I think I prefer the higher top gear and I tend to move quickly on the flats. I usually don't do much inclines unless I am going up a bridge or encounter a hill. I have yet to learn how to measure my candance (Although I know what it is) so I will learn this in time.
They said that the chain was so stretched after measuring it they told me that they usually do the chain and cassette at the same time with this kind of miles. (I know it was 2000+ because my odometer has not changed). So far it feels real tight. I mean tight. I forgot what it feels like new. I will ride my trail today and see if there is a difference between 26 and 28.
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Old 10-27-18, 07:09 AM
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A bit of an update. I do not like the slower Cadence of the 11-26. The 12-28 felt faster to me. I will be looking for a Shimano tiagra 12-28 to replace the new cassette
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