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-   -   Rackless packless commuting (https://www.bikeforums.net/commuting/1067058-rackless-packless-commuting.html)

Darth Lefty 06-07-16 01:42 PM
Originally Posted by bmthom.gis (Post 18827112)
I'm just thinking of the flexy seatpost that comes on the CDale Synapse. You can already (by design) feel it flex in certain circumstances, I'm just wondering if a bikepack would exaggerate it.
I looked at their website just now because you caught my interest with this. It's a suspension system, basically. That makes it a bit strange on a rigid bike. There's no way to adjust spring rate or preload or damping, it's all built in and the same for everyone at a given frame size. Presumably they are clever enough to have made it stiffer at larger sizes. But anyhow, I'd guess that ten pounds more would not make a huge difference.

corrado33 06-07-16 02:23 PM
Originally Posted by alan s (Post 18826991)
Not sure which bike @corrado33 is referring to. In either case, I don't see a CF rack in my future.

As far as weight is concerned, think about how much weight your body puts on the seatpost. An additional 10 pounds or so is not going to break it. All attachments are velcro and nylon straps, which help absorb any shock. The only issue with CF is clamping something to it, which puts all the stresses in a small area. Not generally an issue with bikepacking bags, but a seatpost rack on a CF seatpost or a standard rack clamped to CF seatstays is generally not advisable.
Are you saying that, perhaps, a carbon fiber rack in which the proprietary bags that work with it clamp to the carbon fiber part of the rack would be a bad idea?

That's what I thought, considering the scratches and gouges I see on my aluminum and steel racks after a few months of use.

alan s 06-07-16 02:34 PM
Originally Posted by corrado33 (Post 18827720)
Are you saying that, perhaps, a carbon fiber rack in which the proprietary bags that work with it clamp to the carbon fiber part of the rack would be a bad idea?

That's what I thought, considering the scratches and gouges I see on my aluminum and steel racks after a few months of use.
My personal view is that CF is not an ideal rack fabrication material, for many of the reasons you stated plus others. If you want to install bags on a CF frame, I think a soft bag is a much better solution than rack and panniers. Offerings from bikepacking gear providers and others are available for that purpose.

JReade 06-07-16 04:34 PM
Originally Posted by ThermionicScott (Post 18824716)
Why shuttle laptops back and forth to work, anyway?

I can work from home if need be, IF I have my laptop.


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