MOUNTAINBIKE REAR SUSPENSION
IGORION COIL SPRING CALCULATOR
 

	PARAMETER		VALUE		UNIT
	RIDER WEIGHT (WITH GEAR)				kg lbs
	DAMPER STROKE				mm in
	WHEEL TRAVEL				mm in
	DESIRED SAG		15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40		%
			MORE SETTINGS

	WEIGHT DISTRIBUTION		72/28 71/29 70/30 69/31 68/32 67/33 66/34 65/35 64/36 63/37 (default) 62/38 61/39 60/40 59/41 58/42 57/43		(% REAR / % FRONT)
	BIKE WEIGHT				kg lbs
	RELEVANT SHARE OF BIKE WEIGHT		15 16 17 18 19 20 21 22 23 24 25		%

	SUGGESTION 1
	SPRING RATE				lbs/inch (N/mm)
	PRELOAD		1		turn
	CALCULATED SAG				% (in,mm)

	SUGGESTION 2
	SPRING RATE				lbs/inch (N/mm)
	PRELOAD		2		turns
	CALCULATED SAG				% (in,mm)

	SUGGESTION 3
	SPRING RATE				lbs/inch (N/mm)
	PRELOAD		3		turns
	CALCULATED SAG				% (in,mm)

	SUGGESTION 4
	SPRING RATE				lbs/inch (N/mm)
	PRELOAD		4		turns
	CALCULATED SAG				% (in,mm)

preload is measured from where the plate first engages the spring.

little preload means:

• supple at beginning of stroke
• solid in middle stroke
• better bottom out protection

high preload means:

• may be harsh at beginning of stroke
• supple in middle stroke
• may bottom due to lower spring rate

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