Answers.Body: <p>There are <a href="http://alpha.bricklink.com/pages/clone/searchproduct.page?q=string#T=A" rel="nofollow">many kinds of LEGO string</a>, which are compatible with pulleys, but they are not closed in a loop, but manufactured as a single thread. You could tie a knot on them to form a loop, but the string lacks the traction of a rubber band, so you should definitely consider this if you plan to transmit power via a belt drive made of a string.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-18T13:52:34.563Z
Answers.LastActivityDate: 2015-10-18T13:52:34.563Z
Answers.UserDisplayName: zovits
Answers.Body: <p>Many office supply/stationary stores will sell rubber bands large enough to do a similar job.</p>
  
  <p>I've managed to find a large rubber band 200mm long and 12.5mm in width. It would be too wide to fit on a standard TECHNIC pulley, but you can attach it to any TECHNIC wheel rim wide enough such as <a href="http://alpha.bricklink.com/pages/clone/catalogitem.page?P=56145&amp;idColor=11#T=C&amp;C=11" rel="nofollow">56145</a>. The grooves on either side of the wheel rim should keep the band from slipping.</p>
  
  <p>I don't know exactly what you plan to build, but you might want to also consider other ways of ways of transmitting power, could you perform the same function as efficiently using a <a href="https://en.wikipedia.org/wiki/Drive_shaft" rel="nofollow">drive shaft</a>.</p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-20T17:12:08.710Z
Answers.Text: WRO only allows LEGO PRODUCTS... :(
Answers.UserDisplayName: undo
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2015-10-18T17:49:59.080Z
Answers.LastActivityDate: 2015-10-18T17:57:40.890Z
Answers.LastEditDate: 2015-10-18T17:57:40.890Z
Answers.UserDisplayName: Ambo100
Body: <p>Have LEGO threads ever been produced? Even the biggest LEGO rubber band is too short to meet my requirements. </p>
  
  <p>I need them for this year's WRO challenge. Note that the challenge only allows Lego products, so I can't just buy the rubber band I need elsewhere.</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-10-18T17:23:50.357Z
Comments.Text: Roughly how big of a rubber band do you need?
Comments.UserDisplayName: Ambo100
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2015-11-26T03:42:59.483Z
Comments.Text: Do you need rubber bands, string, or both? If you need long rubber bands you may have to either loop them together and use wheels instead of pulleys, or use Lego [chain links or tread links](https://www.bricklink.com/catalogList.asp?catType=P&catString=138) to make arbitrarily long loops
Comments.UserDisplayName: Móż
Tags: <technic>
Title: Where can I get threads compatible with LEGO pulleys?
UserDisplayName: undo
ThreadText: # Where can I get threads compatible with LEGO pulleys?
  
  (Asked by: username_0 on 2015-10-18)
  
  Have LEGO threads ever been produced? Even the biggest LEGO rubber band is too short to meet my requirements.
  
  I need them for this year's WRO challenge. Note that the challenge only allows Lego products, so I can't just buy the rubber band I need elsewhere.
  
  **Tags:** technic
  > **Comments:**
  > **username_1**: Roughly how big of a rubber band do you need?  
  > **username_2**: Do you need rubber bands, string, or both? If you need long rubber bands you may have to either loop them together and use wheels instead of pulleys, or use Lego [chain links or tread links](https://www.bricklink.com/catalogList.asp?catType=P&catString=138) to make arbitrarily long loops  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2015-10-18. Score: 3
  
  There are [many kinds of LEGO string](http://alpha.bricklink.com/pages/clone/searchproduct.page?q=string#T=A), which are compatible with pulleys, but they are not closed in a loop, but manufactured as a single thread. You could tie a knot on them to form a loop, but the string lacks the traction of a rubber band, so you should definitely consider this if you plan to transmit power via a belt drive made of a string.
  
  
  ---
  
  ### Answer by username_1 on 2015-10-18. Score: 3
  
  Many office supply/stationary stores will sell rubber bands large enough to do a similar job.
  
  I've managed to find a large rubber band 200mm long and 12.5mm in width. It would be too wide to fit on a standard TECHNIC pulley, but you can attach it to any TECHNIC wheel rim wide enough such as [56145](http://alpha.bricklink.com/pages/clone/catalogitem.page?P=56145&idColor=11#T=C&C=11). The grooves on either side of the wheel rim should keep the band from slipping.
  
  I don't know exactly what you plan to build, but you might want to also consider other ways of ways of transmitting power, could you perform the same function as efficiently using a [drive shaft](https://en.wikipedia.org/wiki/Drive_shaft).
  
  > **Comments:**
  > **username_0**: WRO only allows LEGO PRODUCTS... :(  
  
  ---
  
  