FFT Stem Slam Drop Aero Calculator [Quick: fft.tips/stem]

	A	B	C	D	E	G	H	I	J	O	P
1			FastFitness New Shop is Open 🏬		https://www.cyclingapps.net/shop/shop-front/			https://www.paypal.me/fastfitnesstips
2									https://www.paypal.me/fastfitnesstips
3							https://www.paypal.me/fastfitnesstips	https://www.paypal.me/fastfitnesstips	https://www.paypal.me/fastfitnesstips
4			FFT Stem Slam Aero Calculator							https://youtu.be/SRnX1k0VMLM
5										https://youtu.be/SRnX1k0VMLM	https://youtu.be/SRnX1k0VMLM
6			instructions: compare your current (old) setup to a new setup based on stem length/drop & spacer height
7			New! 50% off training plan (code="TIZ") based on your inputs: https://www.cyclingapps.net/coaching/order-personalized-adaptive-training-plan/
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10			OLD / PREVIOUS STEM SETUP
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12			Old Stem Length (cm) that you removed	5.5	< enter	Typical stems are 6,9,10,11,12 cm (measure headset to bar center)
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14			Old Stem Drop Angle (angle downward)	0	< enter	Small drop...Looks ok
15
16			Typical head/steerer tube angle	70		Look this up or measure this angle (default 73.5 // see figure........)
17
18			We calculate drop/rise from neutral as	-1.88	cm	Slight rise.....dont worry its common
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20			NEW STEM SETUP
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22			New Stem Length (cm) that you fitted	9	< enter	Looks ok
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24			New Stem Drop Angle (angle downward)	20	< enter	Looks ok
25
26			We calculate drop/rise from neutral as	0.00	cm	Slight drop
27
28			Old to New setup additional drop	1.88	A	This is the vertical drop (or rise if neg) from the previous position (above)
29
30			SLAM STEM >> SPACERS
31
32			Amount of spacer height removed (cm)	3.3	B	You removed this much height in cm
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35
36			CHANGE IN TORSO / HIP / SADDLE ANGLE
37
38			Distance mid-saddle to bars (cm)	69	< enter	This is typically 40% of your height or arm span
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40			(Optionally) Saddle height above bars (cm)	2	< enter	This only makes a tiny difference to this calculation
41
42			Change in torso angle (degrees downward)	0	< enter	No change in rotation
43				1.660979869
44			We calculate an additional drop of	0.00	C	Vertical drop from the previous position (above) with the spacer drop included
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46
47			Grand Total	5.18	A+B+C
48
49	NEW		CHANGE IN BAR WIDTH
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51			Reduced your bar width by (cm)	0	< enter	eg swapped 44cm for 42cm
52				42
53			YOUR SPEED
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55			Typical Speed (kph)	32.0	< enter	Your average riding speed (kph)
56
57				19.88	mph		[Tip try several speeds eg hilly course vs flat course]
58
59			RESULTS WATT SAVINGS
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61	**		Approximate gains (drag in watts)	20.5		fairly big gains, wow!
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63			Approximate gains (seconds in 40km)	136.9		Big time gains!
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65			Approximate % time gain	3.0	allow 10 seconds to calc
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68
69		**	add 25% to this figure if you ride a flat bar MTB/Hybrid bike
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79			https://www.strava.com/clubs/fastfitnesstips
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85			https://fft.tips/stem
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