Yeah I used to ride a LOT... like everyday for 2+ hours and never seen a chainring do that. My Santa Cruz still hangs in the garage. I'm kinda scared to ride it, its got a carbon fiber seatpost and a seat I affectionately named "Prison Rape" (You get used to it and it only weighs like 180 grams) and the carbon post is probably not rated to hold my fat ass. Last thing I want is it to break and I have a sharp carbon shaft stabbing me in the femoral artery or up the poop shoot. I need to just pull the trigger and buy a nice aluminum post and a larger seat for it. This is my chainring after 15 years.. granted only about 6 years of really hard riding. Needs to be cleaned up apparently.
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Good ol' Prison Rape
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Any good seat is going to make you wish you hadn't dropped the soap it seems. When I was riding 10-20 miles daily it used to take me about 1-2 weeks of riding to get my ass numb enough to ride w/o pain.
My seat is OK but so old so it has no groves for butt sweat and a grove for your nutz:
Can get a new grooved WTB brand seat for less than $30
I took a good test drive last night and no clue if I'm going to swap out her crankset. They are spot welded pressed crap steel (bike was $570) brand new back in 1999/2000 so it's got some good parts but some junky parts. Gears seem to be the cheapest part outside the POS bearings they used for the pedals. Not only is the mid range blown, high range is bent out around 1/4". The only gears not messed up is low.
Looking through e-bay right now for a used one or new/old stock thats a slight upgrade and if I can't find one for cheap Ill take if off and bang the one set flat again so only mid-range is fubar. Not looking to spend more money on a bike than it's worth and right now that bikes worth $50 trade in $100 private sale in great condition per ther web. Ill never sell it so just keeping that in mind when I see $450 cranksets for sale.
Wanted to call the local store I bought it at to see if they had any cheap "service" parts in stock that I could buy but they are closed. They could be open but since they are older decided to close their doors for now. Wish they would sell parts via web or offer parts pick up and on the phone consulting, but I get it. Most people are tards and in the ritzy area these guys have their shop so I'm sure only a very small % of their customers know what a wrench is. Plus being older I'm sure their not tech savvy.
In regards to carbon fiber - I'm not a fan. Being around boats and water for pretty much my entire life, my view on fiber materials and longevity is not a good one especially if UV is involved. Kinda like a fiberglass ladder left in the sun for too long - never know when it's going to fail.
That said - aluminum also has stress issues and you only sit on the seat when taking it easy so you might be ok?
Tell you one thing - my seat post is the most damaged part besides my crankset. The amount of dings from stone's flying up and hitting it is crazy. That would make me fearful with carbon. The stone hits are so bad they chipped through the black anodized finish and that pretty hard to do.