We make CataRaft Yokes to any dimension. We make Cat Yokes from the 1.9" o.d. as well as the 1.66" pipe 6061-T6XX structural aluminum alloy. We can fit a Cat Chassis to a 36" diameter or a 12" diameter inflatable or rigid hull structure.
Compare to national brands for a 50% savings
Featuring Ultra High Clearance Cata_Raft Yokes
Sooo High You'll Have to Re-Think the Bridge Approaches
If by chance your initial purchase was a 1.25" nps (1.66" o.d. pipe), we also offer conversion fittings to make the switch.
Yoke, w/ Optional Thigh Bar Supports
Paddling CataRaft Chassis
Cat Yokes Height Standards:
8", 9", 10"Vertical Centerline (control the under clearance)
All Yokes Constructed from 1.5 NPS 6061; ASTM B429
A Few Popular Cat Yokes Illustrated ...Not to Scale
73-44-10 $100 Fits a 10 ft Oar with Straight Tower
73-44-10R Top Chord Extra Strong $110 (3 for $300)
66-37-10 $90 Fits a 10 ft Oar with MT88 Tower
70-39-9 $ 90......Fits a 10 ft Oar with MT88 Tower
62-33-9 $ 85......Fits a 9 ft Oar with MT88 Tower
52-26-9 $ 75......Fits a 8 ft Oar with MT88 Tower
64-39-8 $ 80.....Fits a 10 ft Oar with MT88 Tower
56-33-8 $ 75......Fits a 9 ft Oar with MT88 Tower
48-26-8 $ 70......Fits a 8 ft Oar with MT88 Tower
__-__-__ Top Chord Length-Bottom Chord Length- CL Strut Length
Note: A single cat yoke ships for about $30-40 USPS. The same is true for two cat yokes .....and in some cases three cat yokes. The volumetric USPS pricing applies. So... Stock up now in our annual Cat Yoke sale.
The Art of choosing a cat yoke.
1) Determine your transverse cooler dimension.
2) Add 4" to the bottom chord dimension to determine the distance between the inflatable tubes.
3) Confirm adequate width. There is no st rule that determines if a cooler is to go sideways in a frame.
Frequently coolers are run tandem in the chassis allowing for alternative cargo configs.
Not shown are the 1 1/4" cat yokes made in an endless array of dimensions. The 1 1/4 yokes are generally 20%
weaker in the strong axis but perfectly adequate for non cargo carrying recreational cataraft chassis.
High Clearance Cataraft Yokes
The net affect of a High Clearance Cataraft is an
additional 4" (9" over NSR brand chassis).
A 50# 3 Yoke Cat Chassis ....Priceless
The permutations of this yoke are limitless and
not shown herein are modification in the third axis.
In geometry, the Pythagorean Theorem is stated such that: the three sides of a right triangle are related by the sum of their squares. Specifically, the sum of the squares of the x and y components is equal to the square of the hypotenuse.
Case in Point: YSA,8,11,56 with a Height (y) of 8” and a Reach(x) of 11”, Deflection Angle of 56 also works mighty fine as a YSA,7,12,56 and a YSA,9,10,56, within normal tolerances.
YSA,8,11,56 are designed for cat tubes in the range of 14” to 18” SI (350-450 x10^-3m)
Angled struts are a means to improve the load carrying capacity (displacement) while maintaining walkway clearance. RowFrame YSA struts rely on moment resistance of the setscrew connections positioning the longitudinal stringers into their design position.
Some have inquired: What is so special about 56 Deg. Send me $10 and I’ll tell you the secret.
CataRaft Double Angle Struts
As Tube Diameters increase, ….
Planar Struts (No Angle) 9.25"high o.c. $25/ea for default pipe 1.9" o.d.
YSA,9.25,12,___ Angled Struts 9.25"high x 12"wide o.c. dimensions single miter $30.00/ea (min 4 qty for setup.)
YSA,8,11,56 $120 Set of 4
CataRaft Yoke StrutsTM were Conceived as an Economical Work-around to
Offer Reasonable Prices in the Markets with Expensive Shipping..
With Pipe Bring Available Locally, These Components Can Be Shipped Via USPS, UPS, Fed-Ex etc.
At Prices That Don't Break The Bank.
We Also Make Right Angle Struts Sets for Support of Drop Rails from the Main Cross Members.
Some have asked: Why the 9.25" dimension of Planar Struts?
When Moses decended from Mt Sanai, she brought forth 4 qty. 20mm rocket boxes for use in a cargo array.
The original translation being in ancient Hebrew, hopefully nothing was lost.
Hybrid Cat Frame On Raft
I call this frame the Papa Murphy.
It can be used on a raft or a cat.
The 2 yoke version is good for 80"oc.
Additional yokes or cross bars are
required for longer frames.
I call this one the Papa_Murphy
because they deliver pizza in the
river country of southern Washington.
Ok, I lied. However, there is some truth
in the namesake.
So: If ya find youself hanker'n for some pizza,
and your north of Vancouver on I5,
1.66" o.d. CataRaft Yoke Struts
La Chassis De Kenny LaPoint:
2 Qty 48 x 8 x 26 Cataraft Yokes (includes tees & pins))
4 Qty Pipe 72" = 24 ft
2 Qty Pipe 48" = 8 ft
1 Qty Pipe 26" = 2 ft
6 Addn'l Tees + Pins for Crosses
Seat Flange (RowFrame) and Seat (Milsco Illustrated)
MT 8x10 Towers, Oar Set
Floors Fabric or Diamond Plate
Knowing You Riding in a Domestic Chassis....Priceless
Adding 18" Cantilever Floor in Front $110 non ported
Adding Aft Deck Rear $110
Double Click to View
Notes on Cat Yokes:
General rule of thumb:
1) A single 1.5 NPS Cat Yoke will support 500 lbs of static bouyancy centered in the boat about the longitudinal axis. Two yokes are the minimum quantity to define a cataraft chassis. There is no upper limit on the number of yokes.
2) 1.25"NPS Cat Yoke will support 300 lbs of static bouyancy centered in the boat about the longitudinal axis. Generally three yokes are the minimum excepting the single person play cats.
Dymamic loading may be 70% higher than static loading. The inertia of a fully loaded large cooler is generally the heaviest item in the boat.
A 150 Qt Cooler (37.5 Gal) Imperial may weigh as much as 350 lbs plus a passenger riding atop the cooler. This usually represents the worst case.
Clustering yokes about a heavy item is one method of achieving strength. Another method is gusseting a joint. Still another method is to reinforce by composite action. Feel free to consult on your specific application.
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