Fleet summary
Avg Duration
61m
Range 38–102
Avg HR
160bpm
83.4% of max
Avg Power
225W
Recent ~200W
Avg Cadence
82rpm
Range 76–88
All rides
Sustained threshold. HR locks to 83% of max with ±1.6% std deviation across 9 rides with wildly different conditions.
Terrain-driven. 38.8% of every ride is climbing. 20m elevation per mile. There is no flat option in Tarrytown.
Diesel engine. NP ≈ avg power across all rides — variability index near 1.0. Even metered output, no surges.
Zone distribution (192 max HR)
HR % of max per ride
The 83% lock. HR has been within 80.8–85.5% of max across every ride — a 4.7% range across 6 weeks.
Z3+Z4 = home. 69.5% of riding time in Z3/Z4. Not recovery, not VO2 — sustained threshold every ride.
Z5 is situational. Fleet avg 8.7% — spikes on short punchy rides, drops to near-zero when managed.
Recent W/kg
2.50
Bilateral confirmed
Best NP
252W
May 2
Avg VI
0.97
1.0 = smooth
Peak Power
817W
May 13
Power & W/kg per ride
W/kg vs categories
Power drop explained. Early rides averaged 246W at 13.7m/mi elevation. Recent routes are 24.6m/mi — nearly double. Same bike, harder terrain.
2.50 w/kg is solid. Trained amateur range is 2.5–3.2 w/kg. Economy gains will move this over the next 12–24 months without more effort.
Cadence distribution
Cadence per ride
Cardiac cost matrix — avg HR by cadence x power (25,000+ pts)
Read down any column — the cadence tax at fixed power. Green star = efficiency optimum.
Key finding: At 175–200W, riding at 90–94 rpm costs +8 bpm vs sub-75 rpm — measured from 25,000+ seconds of real data.
Natural cadence 80–84 rpm. The 88 rpm ride required deliberate effort. The 76 rpm ride was the unguided baseline.
Fit brief: Climbing cadence under HR control is the low 70s — not 85+. Dial position for 78–84 rpm flat, mid-70s on grades.
Climbing time
38.8%
Every ride. Range 36–42%. Constant of the environment.
Avg elev / ride
267m
876 ft. A flat crit rider does 50–100m.
Elev / mile
20m
65 ft/mi avg. Steep and consistent.
Elevation gain per ride
Power drop explained. Early Domane rides averaged 246W at 13.7m/mi. Recent routes are 24.6m/mi. Same bike — harder terrain, managed HR.
May 10 confirms the pattern. 18mi, 82min, 484m elevation. Avg HR: 84.1% of max. Identical to every other ride. Stable aerobic governor.
Fit brief · Piermont · May 24
Duration & use case
- → Modal ride: 40–70 minutes, 10–18 miles
- → One ride exceeded 90 minutes in 9 total
- → Morning efforts, not all-day epics
- → Fit for 45–75 min comfort, not 4-hour tolerance
Intensity profile
- → Locks to 83% max HR with remarkable consistency
- → Z3+Z4 = 70% of all riding time
- → Not a recovery rider, not a VO2 interval rider
- → Position must support sustained threshold breathing
Cadence reality
- → Natural cadence: 80–84 rpm on flat/descent
- → Climbing cadence: low 70s under HR control
- → Not a high-cadence spinner — fit accordingly
- → Cleat and saddle fore/aft for 78–84 rpm biomechanics
Terrain & environment
- → 38.8% of every ride is climbing
- → 20m elevation gain per mile — consistently steep
- → Position must handle variable torque demands
- → Not optimized for flat TT riding
Power signature
- → NP = avg power (VI ~0.97) — diesel, not punchy
- → Even output across all terrain types
- → 2.50 w/kg on confirmed bilateral power
- → Fit for sustained aerobic position
PCO / asymmetry
- → Right PCO: +6.9 to +8.2mm — both bikes
- → Left PCO: near zero
- → R-L delta 5.6–7.5mm — structural, not fatigue
- → Cleat, functional LLD, or hip asymmetry
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Fleet — 9 rides