I recently picked up a Carbine SL from Wrench Science and have only ridden it a few times so far. I'm really happy with the bike, but one thing that I noticed was that my seat post was always slipping a little bit. Since I was planning to put in a dropper post anyway, I didn't bother to look into it. Anyway, I got my KS Lev this week and removed my post, and then discovered that the seat tube is actually very rough internally and also not perfectly round.
There are visible deep grind markings starting about 1.5cm below the top of the seat tube and only on one side. The grind marks make a depression into the carbon, such that the grinded portion is about 1mm or so deeper into the seat tube wall on that side. This means that the frame will never make solid contact with any seatpost that is inserted into the frame.
I took photos of the grinded area, as well as one with a flat edge next to it to show the level of the depression created. As you can see, the depression is only on one side.
It looks like someone at Intense got a bit overzealous with a flex-hone bit!
Anyone else see something similar in their frames? I haven't contacted Intense yet...due to the other threads regarding their warranty service, but I think I should, sooner than later.
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