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Thread: HoBao H4E Pro touring car kit
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Old 01-08-2014, 12:20 PM
  #483  
edonsohc
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Originally Posted by heretic
Don't own a HoBao but it's easy to calculate. It's: diff (or spool) pulley divided by layshaft pulley. For instance in my Photon the IDR equals (40T / 20T) = 2.

HTH
ok, easy enough. thanks.
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