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dan-roberts dan-roberts's photo
Jan 2, 2022 at 9:33
Jan 2, 2022
No photoshop, just threw the wheels above my head, with a bit of practice and precision, and then the photographer took the photo.

Sep 24, 2021 at 4:10
Sep 24, 2021
Hi Could you, as an engineer, give a quick answer(if there is one)on the affect a high seat-post has on stress at the top tube/seat tube junction? I'm looking for a new bike, read your seat tube angle article and wondered, with seat tubes getting shorter, does an overly long seat-post stress the frame more? Thanks
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dan-roberts dan-roberts's article
Jul 12, 2021 at 9:06
Jul 12, 2021
First Ride: Manitou's New Dorado
@hamncheez: Maybe you need to come live over here mate. DH in this slice of the Alps is anything but dead.
dan-roberts dan-roberts's article
Jun 10, 2021 at 1:02
Jun 10, 2021
What's Going On With Commencal's Prototype DH Race Bike?
@Mondbiker: No, he ain't got no techmology. You can check his website!
dan-roberts dan-roberts's article
Jun 10, 2021 at 0:59
Jun 10, 2021
What's Going On With Commencal's Prototype DH Race Bike?
@winko: Anti-squat is a mix of pivot placement and how the chain force interacts with the system, it's not just the chain force. Using pivot placement to make the suspension extend with chain force is something that can be applied to any other suspension system. While there is some good information in that video, there's also a massive amount of marketing and unexplained grand claims.
dan-roberts dan-roberts's article
Jun 9, 2021 at 14:43
Jun 9, 2021
What's Going On With Commencal's Prototype DH Race Bike?
@Primoz I spent quite a bit of time looking at the six-bar systems with this layout. There’s 2 instant centres that need to be found before you can determine the one for the seat stay frame part relative to the mainframe. There’s a method using a plotted hexagon to determine which ICs are related via the Arnold-Kennedy theorem, along with which ICs you have already and which you need to find.
dan-roberts dan-roberts's article
Jun 9, 2021 at 13:57
Jun 9, 2021
What's Going On With Commencal's Prototype DH Race Bike?
There’s this bloke round where I live, Rainbow Jeremy, who reject everything to do with science.
dan-roberts dan-roberts's article
May 29, 2021 at 13:41
May 29, 2021
Review: The Privateer Bikes 141 Is A Little Bike with Big Intentions
@DHhack: Instead, I’ll go ride my undersized bike.
dan-roberts dan-roberts's article
May 29, 2021 at 0:15
May 29, 2021
Review: The Privateer Bikes 141 Is A Little Bike with Big Intentions
@DHhack: Haha, undersized. It’s effective top tube, and it’s measuring to a point that we never ride at. Using it as the driver to size bikes is dangerous and leads people to be on bikes with reach numbers that can be unmanageable.
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