RowFrame.com RaftFrame.Com

 

 Featuring Ultra High Clearance Cata_Raft Yokes

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.

 

 

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.

CataRaft Angled Struts

PN:  YSA (Yoke Strut Angled); Height (in); Reach (in), Angle of Deviation (Deg)

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.)

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YSA,8,11,56  $120 Set of 4

 

CataRaft Yoke Struts^TM 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.

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,

Think "PapaMurphys"

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

Drop Bag

Knowing You Riding in a Domestic Chassis....Priceless

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Options:

Adding 18" Cantilever Floor in Front $110 non ported

Adding Aft Deck Rear $110

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.