Ideally looking for multidirectional layer circular tubes (multidirectional best for drivetrain members since likely undergoing different stresses & also easier for calculations; circular tubes since stronger than square and not much mounting necessary for drivetrain members). ). This means likely twill weave roll wrapped or maybe braided depending on expected forces/stresses. Also depending on forces/stresses, tube OD guesstimating between 1.25 to 2" (32 to 50mm).
Based on Rocker-Bogie 3D printed prototype, estimated total CF tube length needed is ~3m (for drivetrain members only, not including chassis or differential).
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Possible options based on online available selection of finished tubes:
- Plain Weave
- Only one size available: 20mm x 18mm x 1.2m ($25.58)
- Twill Weave
- Range from 13mm to 32mm OD, from 0.75mm to 1.5mm thickness
- Largest and longest available: 32mm x 29mm x 1.5m ($77.11)
Rock West Composites
Much larger online selection, but prices are much more expensive even considering the 15% student team discount.
- Roll Wrapped
- Twill Weave
- Example comparable to Composites Canada: 32mm x 28.5mm x 1.83m ($167)
- Plain Weave
- Example comparable to CC: 19mm x 16mm x 1.83m ($136)
- Checkered Weave
- Unidirectional tubing but with an outer woven fabric ply
- Twill Weave
- Braid
- extremely thin walls
Dragonplate
Similar pricing to Rock West, also similar selection.
- Roll Wrapped
- Twill Weave
- Comparable example: 31.75mm x 28.5mm x 1.83m ($165)
- Unidirectional
- Twill Weave
- Braided
McMaster-Carr
Even more expensive.
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