Qulbix Forum

Discuss how to plan, build and ride performance electric bikes. SHARE your questions, comments and opinions in the forum, REPLY or VOTE other comments and EARN POINTS as a Qulbix user.
  1. User's FAQ
  2. DIY Frame Kits
  3. Friday, 02 December 2016
What is the frame's dropout width? And why does it matter?
Qulbix Accepted Answer Pending Moderation
DIY e-bike BUILDER
The term DROP-OUT WIDTH refers to the end of the frame's swing arms. The drop-out width is the measure in between the two swing arms and determines the space available for the electric motor mounting.

https://www.qulbix.com/images/catalog/forum/Qulbix-Drop-Out-Width.png

The standard swing arm drop-out width in Qulbix frames is 155mm - which works best with the QS motors we offer in our shop - but you can also order custom 165mm drop-out. Just be sure to mention it when ordering your frame kit.
  1. more than a month ago
  2. DIY Frame Kits
  3. # 1
User's FAQ Accepted Answer Pending Moderation
Which width should I get for a QS motor? A 155mm or 165mm?
  1. more than a month ago
  2. DIY Frame Kits
  3. # 2
Qulbix Accepted Answer Pending Moderation
DIY e-bike BUILDER
For the QS motor the optimal drop-out width is the standard one - 155mm.
You might need spacers to mount your motor to the frame.
References
  1. https://www.qulbix.com/qulbix-products/diy/motor-spacer-set
  1. more than a month ago
  2. DIY Frame Kits
  3. # 3
John Bozinov Accepted Answer Pending Moderation
I want to put 17" fattest knobbies on the 155mm, what the maximum mm mc tyre I can fit?

thanks
  1. more than a month ago
  2. DIY Frame Kits
  3. # 4
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