Boulder vs. Carre

Every bike in the studio gets compared to my Boulder Brevet simply because it fits me so perfectly. It’s interesting comparing the Boulder with the Carre.

To make a fair evaluation of the geometry and size, the camera is set up on a tripod to ensure that the shooting angle and position is exactly the same between both bikes. The floor is also marked for positioning of the bikes. Because they are resting in a bike stand, some correction for “squareness” is necessary. The photos were slightly rotated in post processing so that the wheels are parallel to the picture frame. Furthermore, the Carre has been nudged so that the bottom brackets are aligned to the Boulder by superimposing the two photographs.

Here is the “control” shot of the Boulder for comparison of tube positioning, geometry, and length.

The green lines indicate a rough tracing of the Boulder tubes, which I’ve drawn on an overlay.

The overlay drawing of the Boulder tubing has been superimposed over the Carre frame. Although the wheel base is a little longer on the Boulder, and more importantly a greater difference between the lower trail Boulder fork and that of the Carre,  I was still a bit surprised to see that there’s not as much difference in bottom bracket height or drop as I’d anticipated.

With 700 x 25 tires, the standover is nearly the same as the Boulder. I anticipate running 700 x 28 so there will be some difference in the final build. It’s also worth noting that the top tube is one centimeter shorter on the Carre: 58cm as compared to 59cm on the Boulder.

This is not to say that I expect the rides to be similar. The two bikes are clearly designed for different purposes, but I’m a researcher and find it useful to compare against known factors, quantities, and considerations. My initial thinking has not changed, despite some similarities to the Boulder geometry: The Carre frame is more of a road bike design, and the available space for wider tires convinces me that it’s probably a CX model. Despite the eBay listing, I don’t see anything that screams “randonneur” to me at all.

Next up: the build.

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s