September 9, 2021 at 21:41 #601183
Took out the large and small chain rings on my bike, leaving me with a 32T chainring and 9 gears. Ready to get a new cassette. Currently have a Shimano CS HG300-9, 12-36 Tooth. As a novice tinkerer who is learning as I go, I have watched some videos and read articles, but still have a few questions:
- What do I need to look for in a cassette? Will any 9 speed system work (assuming hardware is the right type), regardless of type, size etc?
- Any issues with shifting through the range of gears if too great a span?
- When installing, is there anything else I need to do besides put the new cassette in?
- Interested in something like 10(ish)-50(ish), thoughts?
- Best bang for the buck? Are the cheapies I see for $35 no go for sure? I assume you get what you pay for.
- Anything else?
Really appreciate the insight and help.
September 10, 2021 at 09:55 #601189
Spec a cassette to fit a Shimano HG freewheel. I know Box makes wide range 9-speed cassettes. https://boxcomponents.com/products/box-three-prime-9-e-bike-cassette?variant=37304575918247¤cy=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&utm_campaign=gs-2020-10-07&utm_source=google&utm_medium=smart_campaign&gclid=CjwKCAjwhOyJBhA4EiwAEcJdcaplWohmhq9RqA9SePpsTOd0Mhjyq5EgPkjc8DWvbtgZQHgxlVVFJhoCbc4QAvD_BwE
Your rear derailleur most likely will interfere with cogs larger than 40 teeth. Spec a derailleur to accommodate the max cog size on the new cassette. https://www.jensonusa.com/Derailleurs?MultiValueDriveTrainSpeed=9+Speed
To remove/install your cassette, you’ll need a Park Tool Fr-5.2 https://www.google.com/search?q=shimano+cassette+removal+tool&oq=shimano+cassette+&aqs=chrome.1.69i57j0i512l4.10219j0j7&client=ms-android-google&sourceid=chrome-mobile&ie=UTF-8#scso=_nzw7Yf-9NYmKxc8P4-qfsAI11:0
I would consider upgrading your 32-tooth chainring as well, depending on the offset. The correct offset ensures your chainring sits in the middle of the cassette, rather than being biased to high or low cogs. Since I don’t know what your offset is now, I can’t make a recommendation.
Also, you may want to add a chain guide if you keep the current chainring. I assume it’s not a narrow-wide tooth, which helps chain retention and reduces chain dropping.
Enjoy upgrading your bike!
October 1, 2021 at 05:21 #603864
enduroexpert78 has good advice. In addition, I did a similar thing a few years back. I moved to a 10 speed cassette from a 9. Stay with Shimano products since you already have them. Your current derailleur and frame should accommodate it. You will need a 10 speed chain and shifter. One added thought. I also when to a 36T N/W oval chain ring because I do ride hard pack at times and it provided a bit more power.
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