The hub is a section of steel pipe of external diameter of about 40 mm, to which are welded two flanges — steel disk with a diameter of about 200 mm and a thickness of 3 mm and pressed on the bearings (bronze, Teflon or textolite bushing).
Wheels cut from plywood thickness 8 — 10 mm, and their diameter depends on the inner diameter of the chamber-Pneumatics. To the flanges of the hub disks are attached with M6 bolts with nuts and washers, and are joined to each other by means of long threaded rods with thread M8, nuts and washers. For attaching Pneumatics with the outside of the wheel instead of washers under the nuts placed hooks bent from a steel strip of thickness 2.5 mm.
Pneumatic convenient to install in three stages. First camera pull on the wheel and gently pumped, and then a nylon rope it pressurewhat to the hooks and then pumped to finally. Set so pneumatic is kept on the wheel.
The wheels of the towing vehicle to rotate on the axle shafts, which is a threaded stud fixed in the axis — dural or thin-walled steel pipe of external diameter of about 40 mm. are Attached to the axle with the help of textolite or even a wooden sleeve, clamped between two nuts.
Sailing the tug on the tires:
1 —nylon cord for fixing pneumatic wheel; 2—pole; 3—arm; 4—the block on the swivel; 5—sheet; 6—sail (area of 4.8 sq. m.); 7—hicok-wishbone; 8—flange wheel hub; 9 — bearing; 10—a drive wheel; 11—coupling with nuts and washers; 12—bus-tires; 13—fork; 14—brace; 15—axis; 16 hook; 17—wheel hub; 18—mast
In the middle of the axis, perpendicularly mounted on the drawbar made of pipe (thin-wall steel or aluminum) with a diameter of about 30 mm.
Steel pipe is better to connect the electric or gas welding with the use of overlays (as shown in the drawings), and dural — using ladders (steel threaded rods, bent in the form of letters) and dural plates with holes.
At the junction of the axle and the drawbar is set masted glass section of pipe, secured with four tubular braces (pipe outside diameter 18 — 20 mm).
The mast is easiest, of course, to get ready — from sail Board (windsurfer), which can be purchased at a sports store along with sail and Hickam-wishbones. However, a good mast is obtained from thin-walled dural tube outer diameter of about 40 mm. Can be planed and wooden mast, choosing as a preset level (without knots and ROE) pine bar. Bottom diameter wooden mast needs to be about 55 mm, the upper is about 25 mm.
Sail for towing it is easy to cut out and sew yourself from lavsan or Dacron. Fits tight and pillow tick, Bologna, and any tight windproof synthetic fabric. Some enthusiasts vyklevyvajut quite durable sails made of polyethylene film, bonding the elements of the sail with duct tape-duct tape with the strengthening of the splice seam type zigzag on a regular sewing machine.
Manufacturer of a sail begins with the construction of Plaza — picture of sails in full size. At first mark the main triangle (indicated in the drawing by the letters ABC). From the tack corner of the sail (angle A) is lowered perpendicular to the rear foot and parallel to spend the rest of the seam. Note that if the width of your fabric does not match shown in the drawing (the image of the flag width 1100 mm) location of seams and their number will be different.
On the main triangle in the front, back and bottom scattering — cause value of “sickles” and three dots on each side of the sail conduct of smooth curves.
From fabric cut out of the workpiece, and laid them on the Plaza and smatyvay or better yet, fasten with glue (rubber or “Moment”), after which sostragivajut on the sewing machine seam “zigzag”. Then the workpiece is cut in accordance with Plaza, rear, and bottom of foot contribut tape or nylon tape, and the front prostrachivajut so-called mast pocket, with which the sail is fixed to the mast. From the bottom and back scatterin sew lat pockets, which invest an elastic wooden or plastic plate with a thickness of 2 mm and a width of 50 mm, which allows to preserve the form of “sickles”.
Sail:
1,8—grommet; 2—masted pocket; 3—sail; 4,5,6,9 lat pockets; 7—rear part I and II—stages of installation of the grommet
Galbavy and sheet corners of a sail to reinforce the fabric gussets and fasten them to the eyelets — copper or brass sleeve, through which pass starty-quickdraws. Instead of grommets can be sewed into the sail small rings and cut inside of each hole.
Another element of sailing arms — hicok-wishbon. Make it from dural pipes in diameter 20 — 22 mm, docked them with a pair of dural plates. At the rear of the pipe band bolt with wing nut.
Equip a sailing tug, the easiest way, after covering it on the nose. First pull on the mast the sail is set and fixed with nylon stardom wishbone, then sail “stuffed” with the guys on the Shkotovo and gulsoom corners. Remains to invest in lat-pockets armor, mounted on wishbone one end of the sheet, and the second pass through is mounted on the swivel at the rear of the drawbar unit — and you can hit the road.
For the first exit makes sense to choose a day when blowing fresh, not too strong wind. The tug should be positioned so that the wind blew from the side or side-rear — with boaters is the position of the sailboat relative to the wind direction is called galfvind. Now you should pick up the sheet to the position when the sail will stop zaprashivat, harder to push, making two or three steps and forward.
To master sailing towing a snap. Well, if a sudden gust of wind will create dangerous situation is sufficient to release the arm tug — the one immediately turn over the mast forward and stop.
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When going on a long journey, skier, usually relying only on its own strength. However, it is possible to summon the wind, erecting for this purpose a sailing ship. To collect such towing is a snap, using weapons from the sail Board mast, hicok-wishbone and sail with a set of lat However, all this can be made independently. To start work conveniently with wheels, pre-arranging a couple of cameras from the truck or wheeled tractor, their dimensions will depend on the size of wheel hubs and wheels.