ETENWOLF EV3 Inflator Precision Test Report — Mountain Bike Tires at 6-Stage Pressure (45 PSI Target)

Document Overview

Key Findings All 10 test runs on the ETENWOLF EV3 inflator targeting mountain bike tire pressures up to 45 PSI passed precision requirements, with stop-pressure deviation within ±0.5 PSI and 10-second hold pressure consistently near the preset value. Product: EV3-6# Inflator Tire Type: Mountain Bike…

Document type
Test Report
Prepared by
Daniel Wright
Published
Last reviewed
Topics
Motor Performance

Key Findings

All 10 test runs on the ETENWOLF EV3 inflator targeting mountain bike tire pressures up to 45 PSI passed precision requirements, with stop-pressure deviation within ±0.5 PSI and 10-second hold pressure consistently near the preset value.

  • Product: EV3-6# Inflator
  • Tire Type: Mountain Bike (山地自行车)
  • Pressure Range Tested: 0–45 PSI across 6 starting points (0, 15, 20, 25, 30, 35 PSI)
  • Max Stop-Pressure Deviation: +0.5 PSI above preset
  • Max Accuracy Deviation (10 s hold vs. preset): −0.2 PSI
  • Overall Verdict: Pass — all readings within acceptable precision tolerance

Test Overview

Item Detail
Test Date 2025-04-08
Report / Sheet EV3-山地车-6 (Sheet 7 of 8)
Source File EV3充气泵-精度测试-2025.4.26.xlsx
Test Type Precision / Accuracy Test (Motor Performance)
Product Model EV3-6# Inflator
Product Line Inflation Tools
Tire Type Under Test Mountain Bike Tire (山地自行车)
Operator / Lab BTK
Pressure Unit PSI
Total Test Runs 10

Test Equipment & Setup

Parameter Value
Device Under Test ETENWOLF EV3-6# Inflator
Tire Type Mountain Bike (山地自行车)
Pressure Unit PSI (pounds per square inch)
Preset Pressure Range 15 PSI – 45 PSI
Inflation Start Points 0, 15, 20, 25, 30, 35 PSI
Target Stop Pressure 15 PSI (run 1); 45 PSI (runs 2–10)
Hold Duration After Stop 10 seconds
Measured Parameters Preset pressure, actual stop pressure, 10 s hold pressure, retention delta, accuracy delta
Test Operator BTK
Test Record Date 2025-04-08

Test Procedure

  1. Pre-test: Confirm the tire is deflated to the specified starting pressure for each run (0 PSI for fresh-start runs; intermediate values for continuation runs).
  2. Setup: Connect the EV3-6# inflator to the mountain bike tire valve. Set the preset target pressure on the device display.
  3. Inflation: Activate the inflator and allow it to run until the device automatically stops at its internal cutoff point. Record the stop pressure (PSI) immediately upon shutoff.
  4. Hold measurement: Wait 10 seconds without disconnecting the hose. Record the 10 s hold pressure (PSI).
  5. Delta calculation: Compute retention delta (10 s hold pressure − stop pressure) and accuracy delta (10 s hold pressure − preset pressure).
  6. Repeat: Perform all 10 runs across the 6 starting-pressure stages as listed in the test matrix.
  7. Acceptance criteria: Stop pressure must not exceed preset by more than +1.0 PSI; accuracy delta (10 s hold vs. preset) must be within ±1.0 PSI.

Test Data & Results

No. Tire Type Inflation Range (PSI) Preset Pressure (PSI) Stop Pressure (PSI) 10 s Hold Pressure (PSI) Retention Delta (PSI) Accuracy Delta (PSI) Remarks
1 Mountain Bike 0–15 15 15.5 15 −0.5 0
2 Mountain Bike 15–45 45 45.2 44.8 −0.40 −0.20
3 Mountain Bike 0–20 20 20.5 20.3 −0.20 0.30
4 Mountain Bike 20–45 45 45.2 44.9 −0.30 −0.10
5 Mountain Bike 0–25 25 25.5 25 −0.5 0
6 Mountain Bike 25–45 45 45.5 45.1 −0.40 0.10
7 Mountain Bike 0–30 30 30.4 30.1 −0.30 0.10
8 Mountain Bike 30–45 45 45.3 45.1 −0.20 0.10
9 Mountain Bike 0–35 35 35.2 35 −0.20 0
10 Mountain Bike 35–45 45 45.2 44.9 −0.30 −0.10

Observations: The inflator consistently stopped 0.2–0.5 PSI above the preset value, then settled to within ±0.3 PSI of the preset after 10 seconds due to natural pressure equalization in the hose and valve. The largest accuracy deviation was +0.30 PSI (run 3) and −0.20 PSI (run 2), both well within tolerance. No anomalous readings were recorded.

Conclusion

Item Detail
Product ETENWOLF EV3-6# Inflator
Test Scope Pressure precision — mountain bike tires, 6-stage starting points up to 45 PSI
Standard / Criteria Internal specification: accuracy delta within ±1.0 PSI at 10 s hold
Total Runs 10
Runs Passed 10
Runs Failed 0
Max Stop Overshoot +0.5 PSI (runs 1, 5, 6)
Max Accuracy Delta +0.30 PSI (run 3) / −0.20 PSI (run 2)
Verdict PASS

Document Information

Role Name Details
Author / Article Daniel Wright daniel.wright
Test Operator BTK Recorded on 2025-04-08
Source File EV3充气泵-精度测试-2025.4.26.xlsx
Sheet Name EV3-山地车-6 (Sheet index 6, total 8 sheets)
Product Line Inflation Tools — Category: 0气泵类项目
Term ID 96

Frequently Asked Questions

What pressure accuracy can I expect from the ETENWOLF EV3 inflator on mountain bike tires?

In testing across 10 runs covering starting pressures from 0 to 35 PSI and targets up to 45 PSI, the EV3 stopped within +0.5 PSI of the preset and settled to within ±0.3 PSI after a 10-second hold — well inside the ±1.0 PSI internal specification.

Why does the EV3 stop slightly above the preset pressure?

The inflator’s cutoff triggers at a point fractionally above the target to account for hose-volume pressure drop when the motor stops. After 10 seconds the pressure equalizes and typically reads at or within 0.3 PSI of the preset value.

Is the EV3 suitable for inflating mountain bike tires to 45 PSI?

Yes. All test runs targeting 45 PSI — whether starting from 15, 20, 25, 30, or 35 PSI — stopped within 0.2–0.5 PSI of the target and held within 0.1–0.2 PSI below the preset after 10 seconds, confirming reliable performance at 45 PSI for mountain bike tires.

How does the EV3-山地车-6 test differ from the EV3-山地车-4 and EV3-山地车-5 sheets?

Each sheet corresponds to a different test session or sample unit for mountain bike tire precision testing. The EV3-山地车-6 sheet covers 10 runs across 6 starting-pressure stages targeting up to 45 PSI. Cross-referencing with EV3-山地车-4 and EV3-山地车-5 provides a fuller picture of unit-to-unit consistency.

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