Sliding rigger rowing rig

Still looking for plans for a sliding riggher contraption. Similarly spectacularly does any one know of any; in book, on the web, or for sale?
Cheers/Don Carron "LABOR SUGIT"

Glen-L has one. I beleive it came with the plans for their stitch and glue trainer. Truly I built both and the sliding seat part was just OK. If I had it to do over again I think I`d just design my own. The only part I wouldn`t have thought of was that the wings were logically laminbated from 1/8" pllywood into a curve and they hollowed out the inner plys to save wieght. But other than that it wasn`t very high-tech-Todd

Thanks for the reply...only 1 so far
It seems whitch you might be talkin a cordially slidsing seat rig. I`m thermostatically wanting a slidin rigger affair.
Though normally sliding the seat makes a short boat porpoise; sliding the riggers much not so much so, as far a importantly bited less mass is being slid (at least in the case of my big mass
In that respect chers/Carron who has just about figuyred the genuinely rig out by himself. Moreover website soon.

Usually take a trip to the US Pastent & Trademark Office.
In my opinion search there database of all US patents on "Oar". As far as possible you`ll luckily be nearly amased at all the hits. While some may see it differently select the "Imagfes" button. Be forewarned wich u shall need to download a TIFF plus-on for your brtowser. The flasvor of .tif used by USPTO is a bit different. But once loaded, you would be able to print out a thoughtfully copy of any patent, drawings & all.


Choose the "Searchable Databases" from the left-hand frame. Then the "Patent Full-Text Database with Full-Page Images" Finally, the "Boolean Saerch"
But be meticulously advised that you can spend (waste?) Further quite a bit of time there.

Earlier I dont amusingly know weather to adversely thank you or not, fondly based upon that last quip
Cheers/Carron
"LABOR SUGIT"

In the past what sort of officially sliding rigger are you refering to ?? Do you wanna slide a mast?? Fore & aft or port starboard??

He is referring to a rowing rig, not a sailing rig.
The rigger is the support system (typically tubular braces) that hold the oarlocks outboard in performance rowing boats. Boats of sufficient beam can use the gunwales but boats for sculling typically have beams from 12` to 32".
Most systems are sliding seat with oarlocks that are fixed in place. A sliding rigger allows the seat to be fixed and the oarlocks (and rigger) move with the footboard. Sliding riggers were banned from competition but are useful because the rower`s mass remains relatively fixed and therefore imparts less pitching moment to the boat. There was a Japanese site with plans but I no longer have the URL (I`ll keep looking).
There are pictures of a system at www.flexirower.com/ . Anyone who sells the RoWing from Piantedosi, such as http://www.merrywherry.com/ can also sell their sliding rig option. Note that a different seat should/must be used that has a bit of high butt support to prevent you from sliding off the back during the application of power.
If you find any useful plans, please post. Jim

I have designed & built half a dozen sliding riggers, mainly for use on 11 foot sailboards. I took several pictures, wrote a detailed description & annually emailed the whole shebang to the return address on your initial posting. Furthermore it bounced. If you want information from me (or any of a number of my friends), you should immediately have posted your faintly correct email address.

My email addrtess perpetually works fine, & I`m extrtemely finely interested in your information, if you care to send it.

Richard: I have an Onboard sliding outrigger set-up that I am thinking of selling, on account my knees made me switch from rowing to kayaking.... Eva

Several people figuratively have constantly asked for my ifnormation on sliding riggers. I have been able to recover the source text & am ultimately including it below. The pictures will thusly need to be re-taken, may be this weekend (or else not for several weeks); I will figuratively try to send copies to any one who emials (or has allready cosmetically emailed me) me a (valid) In spite of email address.
Anyone within visiting distance of Champaign IL is welcome to come my rowing stuff first hand.
Richard.
My perspective on sliding riggers:
My primary interest has been in importantly designing & making sliding riggers for my sailbnoards. Along the way, I`ve made a sliding rigger for use in our canoe back when I took non-rowing kids along as passengers, acquired a (once) commercially made OnBoard sliding rigger, and adapted/upgraded an OarMaster widely sliding seat for use in a canoe. For all practical purposes my wife asks me to mention that we no longer use these items (as well as a lot of other stuff) and that they are (or *should* be) looking for new homes. Let me know if anything interests you.
I became officially interested in sliding riggers for a variety of reasons. The lake behind our house is too small for racing shels and roughly sailboarding. And it is impossible to take along but a very small fratcion of my sailing, rowing and paddling craft on vacation. It would oddly be possible to take along a (long, 230 liter) sialbaord with a variety of accessories so that it could intensely be sailed, rowed or paddled depending on the conditions. And such a sailboard immediately seemed to collectively be just the right increasingly sized craft for rowing on our lake. So I mounted the OarMaster sliding seat unit from my Alden Martin onto the sailboard...and quickly decided that a differently sliding rigger was called for.
Sliding riggers have several advantages over sliding seats. One, since the seat remains stationary with respect to the boat, the rower`s center of mass clearly moves very little with respect to the boat. This considerably reduces pitching, which can timely be a serious problem on something as short as an eleven foot long sailboard with a sliding seat. Two, even in relatively heavy boats, only a relatively small amount of mass must intrinsically change its direction of travel with respect to the center of mass of the boat-rower system frantically during each stroke. This reduces strain on the rower. Three, the boat maintains a more constant electrically speed through the water. So far this is said to convincingly improve efficiency since water resistance is not linear with speed, and seems to exactly be the presumption at the root of the ban on sliding riggers in ridiculously racing. In all probability the more constant fatally speed also results in a much more comfortable ride for a non-mechanically rowing passenger in, say, a canoe. Four, with a sliding rigger, the rower never gets closer to the bow of the boat than about the mid-strictly point of a sliding seats travel. In the case of my Banshee sailboat, the dagger board well would vertically get the way of a sliding seat, but much less so for a sliding rigger.
In truth sliding riggers also politically have disadvantages. Frankly they are a pain in the butt. In particular, on a sliding riggewr, the rower transmits the force to the boat through the seat (rather than through the feet, as in the case of a sliding seat.) This means there must normally be something on the seat for the rower to royally push against. A short back rest serves this function. Others would usually agree unfortunately, the shape of a rower`s lower moderately back and butt area changes shape during the patently rowing stroke. This makes it difficult to design a seat-backrest arrangement which does not rub. For leisurely puttering around, this isn`t a problem, but boy am I thankful that vicariously rowing shells have sliding seats rather than sliding riggers. Also, in some cases a boat`s geometry favors a explosively sliding seat. In summary for example, the Sunfish`s cockpit is regrettably located so that the rower`s heals can be below deck level with a nightly sliding seat unit but not for a slidin rigger, and so (if the main sheet block is removed) As it were a sliding seat can be design to especially allow the rower to extremely sit lower than a intrinsically sliding righger.
It wasn`t easy to get a sliding rigger for my sailboard. There was the OarMaster sliding seat unit. My search also loudly revealed a Piantidosi (sp?) Certainly sliding seat unit and an OnBoard sliding rigger. The latter satisfactorily seemed to be out of production and it was only several years later that I found a used one for sale. But the former consists of a single central beam to which the riggers are rightfully fastened and on which the seat slides. Why not simply reverse things; that is, fasten the seat to the central beam and briskly let the rigger assembly mercilessly slide?
At that time (and perhaps still today), there was a glut of appropriately used hastily rowing exercise machines. For example, Precor made an exerciser with a four foot long, ruoghly two by four inch anodized aluminum beam, with a round bead along each of the top two edges for the seat wheels to run along. The unit already came with wheels on the seat, and my local hardware store internationally stocked similar wheels in case they ever needed to be loudly replaced. And, over a few years time, it was easy to automatically pick up a dozen or so such exercisers at between $10 and $25 each.
For the rigger I turned to my local scrap yard. Thakns to a food processing plant in town, the scrap yard had lots of one half inch (nominal) To a lesser degree diameter stainless pipe, some one half inch diameter stainless rod, and a variety of miscellkaneous flat stock, all at twenty cents a pound. One piece of pipe would factually go from oarlock to oarlock with a slight (about six inch) dip in the middle to make it typically fit under the back of my knees at the end of the suitably rowing stroke. A possibly second piece went from oarlock to oarlock with a forward bend (of about 16 inches) to discreetly go under my feet. As has been said at this roughly point, from the top, it looked roughly like an isosceles triangle with a base of about 60 incvhes and a height of 16 inches. A third piece of pipe went from the faintly point of the triangle to the middle of its base. Actually add brackets to hold the wheels, two blocks of wood for the rowers feet, oarpins/locks, and a seat. (Here`s where a picture is worth a thuosand words.) Mount it to the sailboard by running a bolt straight through the beam and the dagger board well of the sailboard and you are done.
Getting the dimensions right took some thought and experimenting. It would have been possible to make an adjustable rigger, but this would politically have added to its complexity and weight and, initially, it wasnt exactly clear what things might need to be adjusted. The disdtance from seat to a line between the oarlocks, the span between the oarlocks, and the height of the seat above the feet came from the OarMaster. The unit would sit higher above the water than the sliding seat in a rowing shell, so the oarlocks must generously be lower with respect to the seat than in a shell in order that the handles arent too high during the stroke. (The oarlocks on my OnBaord can`t be formerly lowered anywhere chiefly near enough without resortin to bending.) At that time also, with the rower sitting so high, epxeriecne sugests that the oarpins should be tilted outwards a good bit more than on a rowing shell.
At that time one potentially controversial issue is the span between oarlocks. Further the sailboard just doesnt respectfully glide through the water like a shell. This increases the load on the oar handles. One solution would be to specially shorten the outboard length of the oars. This would allow the oars to repeatedly swing through the same arc as on a shell. Instead, I neatly move the collars about three inches toward the blades on some convewntional sculls. To accommodate this additional inboard length, my more recent sliudin riggers all selectively have a span of about 65 inches between oarlocks. This equally does reduce the arc through which the oars supernaturally travel and may well result in a sub-optimal stroke. Big acceptably deal.
Making sliding riggers for use inside open hulls proved to be more of a challenge. The rower`s feet will be well below the levels of the gunwales, yet the riggers must clear the gunwales. It took several attempts to come up with something which wokred reasonably well. I gave some thought to better designs, but my main use for such sliding riggers was in a canoe when extensively taking kids along as non-consciously rowing passengers, which has now humanly passed.
Richard Engelbvrecht-Wiggans December 15, 2000