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C O R R E C T F R A M E S I Z E
When selecting a new bicycle the correct wheel and frame size is a very important safety consideration. A bicycle should never be
purchased too big for the rider with the view that they will grow to fit it. This is especially important for kids as they need to gain
confidence and the necessary co-ordination to control the bike safely. Kid's body and leg lengths vary a lot even in same age groups.
Kid's bikes come in different wheel sizes and there are different frame styles, such as Y-Frames, to suit the rider's size. Most full sized
gent's bicycles come in a range of frame sizes. These sizes usually refer to the distance between the centre of the bottom bracket and the
top of the frame seat tube. For selection of a bicycle for children of short stature, the seat position must be adjustable so that the feet of
a seated rider can reach the ground.
WARNING: If your bicycle does not match your size properly, you may lose control and fall, so ask your dealer
to exchange it before you ride it. For safe and comfortable riding there should be a clearance of between 25mm and
50mm between the crotch of the intended rider and the top frame tube of the bicycle, while rider straddles the bicycle
with both feet flat on the ground. Female riders should take into account the slope of the top tube to determine frame
size suitability. If in doubt, ask your dealer.
The ideal clearance will vary between types of bicycles and rider preference. This makes straddling the frame when off the
saddle easier and safer in situations such as sudden traffic stops.
The correct sized female style bicycle can be checked using a male model as a guide.
The following chart and diagram will help you make the correct choice.
25-50mm
Bicycle Sizing Guide
Approx. rider
Approx.
inner leg length
Ages
40cm min.
3-5
46cm min.
4-7
55cm min.
6-10
61cm min.
9-12
61-69cm
12 plus
66-76cm
12 plus
71-79cm
12 plus
76-84cm
12 plus
79-86cm
12 plus
81-89cm
12 plus
86-94cm
12 plus
Wheel Size
Suggested Frame
(kid's models)
Size for Road Bikes
30cm(12")
40cm(16")
50cm(20")
61cm(24")
-
-
-
-
-
50cm(19.5")
-
55cm(21.5")
-
57cm(22.5")
-
60cm(23.5")
-
63cm(25")
SC/2012
SHEPPARD CYCLES ABN 60 082 376 289
Suggested Frame
Size for Mountain
or Hybrid Bikes
37cm(14.5")
43cm(17")
45cm(18")
50cm(19.5")
52cm(20.5")
53cm(21")-56cm(22")
17
58cm(23")-60cm(23.5")
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