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Bike fit goniometer
1. Bike Fitting Tools
This is another “standard” in Bike Fit
Goniometer MP (G-Meter) -- the cycling-specific, color coded goniometer.
Use to easily and quickly Use BikeFit’s Goniometer to easily and quickly determine
determine joint and body joint and body position angles. Constructed of clear
position angles. Multi-purpose plastic, 17.75” folded, that’s longer than most medical
measurement device. goniometers. Multiple cycling specific component &
Part# 7010102 body measurements can be taken with this device. This
Form#0010144 is a standard component of the Bicycle Fitting System.
Measuring Seat Height:
While safely on a stationary trainer, pedal enough to get warmed up. After a few minutes of pedaling, stop with leg
extended and foot at bottom of the pedal stroke.
a. The Goniometer is the perfect
tool to aid you in determining b. After a few minutes of
pedaling, stop with leg at c. Starting at the hip, palpate
(feel) for the greater
optimal saddle height. The bottom dead center (BDC) of trochanter (bony prominence
Goniometer’s color coded the pedal stroke. Some help on outside of hip). This is the
dial will help in finding best may be needed to catch and reference point for the upper
angle ranges. stop movement with heal arm of the Goniometer.
in same position as during
pedaling. This is a starting
point for optimal saddle
height determination.
Knee Flexion
~ 27˚ to 37˚
d. The axis (center dial)be atthe
Goniometer should
of
a e. Keeping the Goniometer
dial centered on the knee, f. The concensus on optimal
saddle height starting
bisecting point of the knee joint. direct the lower arm towards position for road cyclists
the lateral malleolus (bony is 27 to 37 degrees flexion.
prominence on the outside Overall road riders may
of the ankle). have a slightly taller seat
height than off-road cyclsists.
Repeat this process after any
saddle adjustments.
2. Measure
Trunk angle:
The trunk angle can be any position the cyclists
finds comfortable.
It is important that the cyclist bears weight on
the ischial tuberosities (two sits bones on pelvis)
to avoid placing excess pressure on soft tissues.
Bisect torso & parallel to ground for best placement
Measure
Shoulder angle:
The angle between the trunk &
shoulder (bisect trunk & upper arm)
should be approximately 90 degrees.
Measure
Elbow angle:
Bisect upper & lower arm for best placement.
The elbows should have a slight 15 to 25 degree
bend.
Color coded dial makes for quick assessment of common cycling
specific angles. See the chapter in the Bicycle Fitting System
Manual [part # 7060101] for more details.
425-821-7237
www.BikeFit.com 12518 130th Lane NE • Kirkland, WA 98034 • USA