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Ask Dr. Dirt

Ask Dr. Dirt:  Mid-Drive vs. Hub-Drive eBikes?
9 Apr 2025

Ask Dr. Dirt: Mid-Drive vs. Hub-Drive eBikes?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: Can you tell me the difference between Mid drive vs. Hub drive ebikes? – Ashton, Eagle, CO Answer: Both mid-drive and hub-drive motor systems offer electric assistance, but they differ significantly in performance, cost, and riding experience. Mid-drive motors … Continued

hub-drive, mid-drive
Ask Dr. Dirt:  eBike Battery Performance in Cold Weather?
4 Oct 2024

Ask Dr. Dirt: eBike Battery Performance in Cold Weather?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: I noticed last November my eBike battery didn’t perform too well in the cold weather, can you explain why? – Jason, Saratoga Springs, NY Answer: E-bike battery performance can be significantly affected by cold weather. Like most lithium-ion batteries, … Continued

coldbattery
Ask Dr. Dirt:  Automatic Shifting eBikes?
7 Aug 2024

Ask Dr. Dirt: Automatic Shifting eBikes?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: I heard Bosch and Shimano are making headway with auto shifting ebikes. Can you explain this and are there any real world benefits? – Taylor, Green River, UT Answer: Automatic e-bike shifting is a feature that allows ebikes to … Continued

autoshifting
Ask Dr. Dirt:  Special chain required for my eBike?
30 Apr 2024

Ask Dr. Dirt: Special chain required for my eBike?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: I see these specific eBike chains for sale, do I need a special chain for my converted mountain eBike? – Arthur, Grand Junction, CO Answer: The amount of torque coming out of electric motors will wear a normal chain … Continued

eBike chain
Ask Dr. Dirt:  Riding with battery in backpack?
25 Mar 2024

Ask Dr. Dirt: Riding with battery in backpack?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: Are there any advantages to removing e-bike battery from the bike and riding with it in a backpack? – Clement, Pacific Beach, CA Answer: You didn’t mention if you were riding on road or off-road and at what distance … Continued

battery backpack
Ask Dr. Dirt:  Can I rapid charge my eBike?
29 Nov 2023

Ask Dr. Dirt: Can I rapid charge my eBike?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: Can I rapid charge my eBike? – Gregg, Burlington, VT Answer: Most ebikes come equipped with lithium-ion batteries, which are generally suitable for rapid charging. Rapid charging refers to the ability to charge a battery at a faster rate … Continued

rapid charge ebike
Ask Dr. Dirt:  How long do eBike batteries last?
29 Sep 2023

Ask Dr. Dirt: How long do eBike batteries last?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: How long will my eBike battery last? – Kyle, Kent, OH Answer: The lifespan of an electric bike (e-bike) battery can vary depending on several factors, including the type of battery, usage patterns, maintenance, and environmental conditions. Typically, e-bike … Continued

ebike battery life, lithium ion lifespan
Ask Dr. Dirt:  Derestricting my eBike?
18 Aug 2023

Ask Dr. Dirt: Derestricting my eBike?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: What’s with these derestricting dongles I see around? Should I do this to my ebike for better performance? – Bryson, Park City UT Answer: Derestricting an electric bike refers to the process of modifying or removing the limitations imposed … Continued

derestricting dongle, derestricting ebike, ebike tuning
Ask Dr. Dirt:  UL 2849 eBike Battery Certification?
21 Apr 2023

Ask Dr. Dirt: UL 2849 eBike Battery Certification?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: Does the UL 2849 sticker on my e-bike battery insure it wont catch my garage on fire? – Ricky, Chicago IL Answer: Underwriters Laboratory (UL) together with several larger players in the b-bike industry same up with safety standard … Continued

ebike battery certification, ul 2849
Ask Dr. Dirt:  eBike 750W motor limit?
1 Apr 2023

Ask Dr. Dirt: eBike 750W motor limit?

by LEMY | posted in: Ask Dr. Dirt, News | 0

Question: What’s up with the 750 watt motor limit on e-bikes sold in the US? – Mike, Austin, TX Answer: The ebike law in the US calls for a motor rating of 750 watts. The issue is that motors are … Continued

750w ebike limit, e-bike motor, peak ebike power

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Recent Posts

  • Ask Dr. Dirt: Mid-Drive vs. Hub-Drive eBikes? April 9, 2025
  • Ask Dr. Dirt: eBike Battery Performance in Cold Weather? October 4, 2024
  • Ask Dr. Dirt: Automatic Shifting eBikes? August 7, 2024

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