Worksman INB frame differences?

Discussion in 'Motorized Bicycle General Discussion' started by david m, Mar 28, 2012.

  1. david m

    david m New Member

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    As I'm looking around at various builds (motorized and not) I'm noticing some Worksman INB frames that look like the top bars are parallel but I know the current versions are not parallel.

    Am I seeing things, have these been modified, or are there different INB frame designs from different time periods?

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  2. sportscarpat

    sportscarpat Bonneville Bomber the Salt Flat record breaker

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    If the top bars are parallel it is not an INB frame. They make a couple different model frames. Check their web site. There are earlier and later model INB frames, too. The earlier frames have a different shape to the down tube and have a different open area shape between the middle and top tubes. In your pictures the top picture is the earlier INB frame. The lower picture is the later INB frame which is also the current production design.
     
  3. david m

    david m New Member

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    Thanks for the info Pat. As far as building for a small powered BTR, is there any difference between the two frames? Seems like the parallel bars make for a nicer looking tank. Are there any fames out there that combine the curved front down tube of a Schwinn Panther with straight, parallel top bars? I'm guessing not.
     
  4. brett7777

    brett7777 New Member

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    I wonder which one my frame is, it has a pretty big gap between the top frame rail & the top of the tank
     
    #4 brett7777, Jun 3, 2012
    Last edited: Jun 3, 2012

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