"It's a dangerous business, Frodo, going out of your door" … "You step into the Road, and if you don't keep your feet, there is no knowing where you might be swept off to."
~ Bilbo Baggins from The Fellowship of the Ring by JRR Tolkein

Bicycle Specifications

Some of my bike's dimensions as drawn by Tony

For all you bike geeks out there, here are the specifications for my light touring, steel framed bicycle as designed and manufactured by SEVEN 7 CYCLES.

Specific Design Choices

The final design and composition of my bike was determined not only by my physical measurements but by my answers to several questions. Here are my answers on a scale of 1 to 10 with 5 being a standard build.

Handling: Stable -vs- Agile
     Choice: #4 (slightly more stable than average)
     Holds a line better and excels at descending and long rides - less quick

Drive Train Rigidity: Lightweight -vs- Stiff
     Choice: #7 (stiff at the pedals, great uphill and when accelerating)
     Maximizes power transfer

Vertical Compliance: Comfortable -vs- Stiff
     Choice: #3 (comfort for long distances)
     Cushion or flexibility in movement

Weight to Performance: Lightweight -vs- Performance
     Choice: #8 (emphasis on performance with weight reduction a close second)
     Designed to meet specific purpose.

Expected use over the course of a year:
     25% Road Training
     25% Club Riding
     20% Light Touring (non-camping)
     10% Mix Terrain (some crushed gravel path riding)
     10% Century Riding (or long distance touring)

Riding Style:
     Spin or "Mash" the pedals?  -  Spin
     Pedal or coast through corners?   -  Pedal
     Climb seated or standing?   - Seated

Bike Specifications:

Saddle height
63.5 cm

Plumb line
2.9 cm

Saddle length
26.5 cm

1.1 cm

Grip height
85.1 cm

Bar rotation

71.6 cm

Frame Geometry:

Seat tube
39.5 cm
Head tube w extension
11.3 cm
Top tube
51.6 cm
Head tube diameter
1.1 in
Head tube angle
Seat post diameter
27.2 cm
Seat tube angle
70.9 cm
Bottom bracket drop
7.7 cm
Wheel size
700.0 cm
Chain stay
42.6 cm
Max tire width
25.0 cm
Top tube slope

Front center
57.9 cm

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