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Messages - ecm

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Road Bike Frames, Wheels & Components / Re: Best TPU tube brand
« on: April 16, 2025, 06:11:52 AM »
In my experience, the problem with 99% of TPU inner tube is the valve, ever!

Too much leaking, no matter the brand.

In order to compare, I've tested against CONTITUBE butyl (Continental) and the valve it's infinitely better than all TPU brand that I've tested.

Example:
 - TPU 90 PSI --> After 5 days they lose +- 10 PSI
 - Contitube 90 PSI --> After 14 days they lose +- 5 PSI

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Road Bike Frames, Wheels & Components / Re: Stone 2x Chainrings?
« on: March 07, 2025, 10:14:33 AM »
Quote from: Blueberry on February 08, 2025, 11:56:47 AM
Looking for good aluminum 2x chainrings (50/34). Ideally 110BCD/5 bolt and under $80. I was looking at Stone, and Bucklos (although I prefer all back) but I was wondering if anyone else had any recommendations? Kinda hoping for the weight to be around 150g or less.

I've been using STONE chainrings in my 2 road bikes since 2023.
In my case, STONE (110BCD/5 bolt) with Prowheel crank (5 claws):
- 1st Setup 46-30 + cassette 11-32 (Sensah Empire groupset) - For my Alloy endurance road bike, even some light gravel roads. Maybe you ask me: Why 46-30???? 95% of the time I'm riding alone; My cadence is higher than average; High elevations and rough terrain. BONUS: There's no issues to ride with my friends in peloton higher than 38 Km/h average. Barely using 11 cog. More than 6.000 Km used, and works fine.
- 2nd Setup 48-33 + cassette 11-32 (Sensah Empire groupset) - For my Trifox X8. Using this only on road and smooth surfaces. For long rides (150 Km and more). The gear ratio for me it's PERFECT! Again, barely using those small cogs (11 and 12/13).

Note that for me, I don't care about weight. Only reliability.
I hope I'm helped you.

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