Drop Rails, Wings, Cantilever Appurtenances for CataRaft Chassis
Drop Rails for 1.5"NPS Pipe
Drop Rails for 1 1/4" Pipe
Morph yor 1 1/4" NPS(1.66" o.d. pipe size) RaftFrame into a 3D CatFrame with the DropRails Illustrated Left.
The models listed have reasonable shipping rates and can travel by UPS or USPS. Alaska shipments will typically go USPS.
Other versions are available.
Wings, Drop Rails, Thigh Braces, Moment Resistance
The difference between Set-Screws and U-Bolts is Moment Resistance.
Moment is analogous to Torque, has the same units as torque but is applied with a force and a lever. The indentation of the setscrew into the substrate material; subsequent shear resistance applied tangent to the materials surface is the means and method.Power transmission through radial shafts uses a similar device called a keyway.Keyways are good but expensive to produce and not transferable to different angles.
Setscrews are similar to keyways and offer a variable means of Moment application by number and orientation. One can add more setscrews into an adjacent shear surface to increase the resistance force applied to the lever. U-Bolts are limited to frictional resistance and have a limited application in raft parts.
Many of my earlier frames had wings. The wing is a device typically welded onto the longitudinal stringers of a raft chassis to offer improved positioning of the oar fulcrum (oar lock).Boats constructed with a narrow beam and wings can efficiently afford a 10 foot oar without oars being out of balance.
Stand N Row Towers
WINGS, WINGS, Cantilever Appurtenances.
Having reconciled the concept that you bought a raft chassis to narrow to facilitate efficient rowing geometry, RowFrame offers these quick fixes:
SetScrew Wings (Two quantity set including Towers and Bronze OR Locks) 36"long x 11" wide: $240. These winges feature 5 setscrew slipflanges set for 1.5" NPS pipe by default.
Wings are also available in the 1.25" NPS absent Towers / Locks for: $150 (48"); $160 (60").
Diamond plate wings are available by advanced order to 48" long. All dimensions noted are centerline.
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