Vac-U-Soling™ Lower Hull Kit.
Manufactured by Vac-U-Boat™
This lower hull kit was approved by the Soling1M Class. Kits are now being produced and sold.
HOW TO ORDER: There is a list. No deposit needed. Just ask by email and you will be confirmed to the list. Email: email@example.com When your name comes up, I'll contact you for your shipping address and keel weight requirements. The waiting list is only for complete kits. Replacement parts are available without delay.
THE LIST: You will know you are on the list when you receive a confirming email. If you get no confirming email, assume you are not on the list and request again. I'll be glad to check my inbox, sent items, deleted items, spam folder and list for your request in order to put you into the correct spot. I can't fix what I never received. Please check your sent-items, outbox or drafts folder to be sure your original request was sent. Also check other names or email addresses you may have used for the original request because I may have you on the list by another name.
Individual parts listed below do not include postage.
Laminating Epoxy Kit: Includes two "one-pump" sets of West-Systems 105 Epoxy Resin and 206 Slow Hardener needed to laminate the Deck Reinforcing Liner and the Hull Reinforcing Liner. Should be used within 4 weeks of shipping. $6.
Vac-U-Soling complete Keels $65.
Vac-U-Soling Hatch Covers White $10, Clear $12.
Vac-U-Soling replacement Rudders with clip $18 or $2 more to include a DuBro Rudder Arm, Set Screw & long Hex Wrench. This rudder also fits a "Vintage" Soling1M.
Vintage Soling1M Hatch Covers White $10, Clear $12.
All other parts and bits are available. Just ask. Buyers are responsible for import duties or taxes for international orders.
IMPORTANT SHIPPING NOTICE: Thanks to "Dimensional Weight" where larger packages are charged by volume, not by weight, a Vac-U-Soling kit is billed as if it weighed 20 pounds even though it weighs only 12 pounds. Shipping can run from $25 to $65 in the USA. However, when you ship two Vac-U-Solings in the same box, the additional cost can be as little as $4 more than shipping a single kit. Folks on the list who have buddies in the same club should get together and let me know to combine such orders to save on shipping.
VINTAGE SOLING REPLACEMENT KEEL NOTE: The Vac-U-Soling keel is mounted with two 1/4-inch stainless steel threaded rods instead of the "Vintage" plywood Keel Spar. The location and diameter of the two threaded rods fall within the dimensions of the keel spar where it exits the body of a vintage keel. It is possible to modify the Keel Box of a vintage Soling1M to accept a Vac-U-Soling keel. Exactly how is up to you. Those who have done this should post a how-to article on the Forum.
KEEL WEIGHT: Keels are cast resin and lead shot. Standard Keels are 7.0 pounds. Lighter weights are available as each keel is made to order for no additional charges. Based on the weights below of some average equipment, builds using all of the parts included in the kit and the standard 7.0 pound keel have a sailing weight of 10 pounds 5 ounces give or take. Do the math with your equipment and determine how heavy you want your keel to be. My last build has a standard keel and with a mini servo for the rudder mounted near the rudder (as opposed to being mounted on the alternate crossmember location) yielded a boat with a waterline below the transom and appearing to sit on its lines.
IMPORTANT PAINTING NOTE ABOUT THE KEEL, RUDDER & RUDDER MOUNT: These parts are made of poured resin. A wax-based mold release may be used in forming these parts. Before scuffing & painting, clean these parts with alcohol or soap & water to remove any waxy residue. Alcohol seems to work well. Tape test: Masking tape will stick to their surfaces when the mold release is gone.
KEEL PACKAGING UPDATE: Thanks to feedback from customers, the keel packaging has been redesigned. The new packing includes laser-cut plywood baffles that brace the keel in place without the pressure of plastic trays and foam previously used to keep the keel from breaking through the box during shipping. The keel box will continue to be hot glued and strapped inside the larger box. You may notice a slight wood-smoke odor when opening the keel box.
USE THE FORUM: As kits are built, I encourage you to post your experiences on the Forum at the Soling One Meter website at http://soling1m.com/ Share the good and the bad to help new builders have success with their builds.
This is NOT your father's Soling.
Updates from the latest build including all revisions to the trial kits are included in the latest instructions below.
PRODUCTION VERSION HULL WEIGHT: Including the hatch cover & magnets, thinner deck with full deck liner, smaller hull liner, thinner transom liner, thinner king post mount, lighter keel shoe & shelf reinforcements, two anchor point reinforcements, all deck hardware, wired crossmember, rudder mount, rudder servo mount, smaller battery tray, keel nuts & washers & 3 coats of paint, without keel, without rudder & linkage, without servos or other electronics, 2 pounds, 3.7 ounces. Add rudder, linkage & arm 2.4oz, receiver .4oz, sail servo + arm & screws (GoBilda Torque) 2.8oz., rudder servo HS225BB .9oz., battery 1,200mAh 4.0oz., sails & rigging 9.0oz for a total of 3 pounds 3.5 ounces. With a 7.0 pound keel, total weight would be about 10 pounds 3.5 ounces. Actual weight ended up at 10 pounds 5 ounces. Likely due to small items like the metal sail servo arm or just bad math on my part.
The trial kits were made with some hand-fabricated parts the same way you might make them when building a single boat for yourself. Custom plastic parts were copied using economical rubber molds and poured resin. While great for a one-off build, such methods are too labor intensive for the efficient production of boat kits. While we are waiting on more hardware bits to arrive, we are adjusting the process of making parts for the Vac-U-Soling kit. The goal is to make them lighter, stronger, and to reduce the labor necessary to produce them. We are also making adjustments to the vac-u-forming molds based upon feedback from the trial builds. Further refinements have been added such as taller ceramic deck fairleads and additional circuitry to the crossmember so you will see a blue LED light to indicate at a glance when the power is on.
Removable fully completed 7 pound keel with options to special-order lighter or heavier weights at no additional charge, completed rudder with Du-Bro rudder arm, stainless pushrod and EZ-connector for your servo, self-aligning rudder mount, integral transom on the hull, no wood components, fiberglass deck cleat backers, pre-drilled pre-wired switch-installed self-centering keel mount fiberglass crossmember/servo board, stainless steel keel mount, stainless steel deck hardware, plastic mast step, magnetically attached hatch cover, removable carbon fiber king post, industrial-ceramic-nylon deck fairleads, tongue-in-groove perimeter deck joint to hull, full deck, partial hull and transom reinforcing liners. Crossmember accommodates sail servos from standard footprint high-torque digital models all the way up to the HS-815BB large servo. It is pre-cut for a standard sail servo and a mini rudder servo. Rudder servo is mounted near the rudder or can be mounted on the crossmember. There are no bulkheads, giving you better access to the hull's interior.
Does not include paint, sails, mast, booms, sail rigging or electronics. We are working on developing a basic sail mast-rigging kit for release in the future.
~ INSTRUCTIONS ~
~ BUILD SUGGESTIONS ~
SAIL SERVO: "Standard" size servos fit the opening in the crossmember. The opening can be enlarged for other sizes. Waterproof programmable digital servos are wonderful and well worth their price tag, especially if you sail often. Experienced builders should discuss their favorite servos on the class website. If you are starting out and don't want to buy a waterproof programmable digital sail servo, try a GoBilda Torque model from Servocity.com. Built for robotics, it has steel gears, 300 oz-in of torque at 6.0 volts and a 2500ma stall current. It is not waterproof. If it gets wet inside, it could malfunction or die. It is reasonably priced and will get you started. It is being used in the 2021 New Hampshire Boat Museum's Model Yacht Building Workshop. This is not an endorsement by either Vac-U-Boat or the NH Boat Museum's Workshop. It is just making you aware of an alternate-hobby (robotics) source for a quality economical sail servo powerful enough to handle the Vac-U-Soling. In the crossmember photos on this page, my transmitter endpoints are adjusted to about 80% in each direction to keep the sail servo arms from hitting the king post. The arm in the photos is six inches long. I will probably make my next one 6.5 inches long. A 7-inch arm will fit in the hull with about 1/8 inch to spare on either side. Read about the GoBilda Torque model servo at https://www.servocity.com/2000-series-dual-mode-servo-25-2/ or click the photo below.
~ SEALANT, GLUE & TOOLS NEEDED ~
This kit is a little unconventional in its materials and construction. Here is some discussion that may help explain the recommended tools and glue.
From the instructions: "To build this you will need: A 50-pack of wooden clothespins (more if you want to laminate the hull and deck on the same day), talc-cornstarch-microspheres (your favorite epoxy filler), 2 pumps of West Systems 105 epoxy with 206 hardener or similar product (Ask if you don’t have access to West-Systems epoxy.), 30-minute set (or longer) epoxy glue (Devcon 2-Ton at Ace Hardware), one caulking tube of Loctite PL S40 polyurethane window, door & siding sealant and paper towels. Tools you may need include a box cutter, 1/16” drill, 5/64” drill, 7/64” drill, a step drill set (allow you to drill large holes in plastic without splitting), wrenches, screwdrivers, drill, an old bath towel, plastic gloves, mixing cup & sticks, alcohol (for cleaning up epoxy), mineral spirits (for cleaning up polyurethane sealant) and you will need to borrow five 15oz. cans of vegetables from the pantry."
Polyurethane Sealant. The windshield of your car is glued with polyurethane sealant. The stuff is strong yet remains flexible indefinitely. It absorbs impact giving you a deck-to-hull seam that is as flexible and waterproof. Loctite PL Polyurethane Window & Door Sealant is a white sealant that bonds to scuffed/sanded High Impact Polystyrene permanently. A caulking tube is enough for the deck/hull seam and other hull bits of 5 boats. If you live near the ocean, your Home Depot or Lowes may stock a below-waterline Marine version. Similar polyurethane sealants are used on full size boats such as 3M's 5200. The original 5200 sealant cures too slow for the Vac-U-Soling. However the FastCure 5200 will do fine. There are other similar products available. I recommend the Loctite Polyurethane Window & Door Sealant because it works, it is economical and cures fast enough for this kit. When you are done you can take the rest of the tube and touch-up the cracks around your windows & doors. After using it, wrap & seal the tube tip with metal aluminum tape to get a few weeks of storage time for the remaining caulk in the tube. Otherwise, it will harden in a few days.
West Systems 105 epoxy with 206 hardener. A proven quality thin laminating epoxy. Good physical bond with HIPS High Impact Polystyrene as long as you sand the HIPS first. Expensive and sold by the quart, gallon, or pail. Until a better product comes along, I'll make small "2-pump" kits available so you won't have to spend $80 just for epoxy. You may have found the perfect substitute laminating epoxy. Post your findings on the Soling1M forum at http://www.soling1m.com/forum/ .
Devcon 30-Minute epoxy. Good for everything else. Good working time. Waterproof. Economical. Available everywhere.
Step Drills. You really need to try these if you work with thin sheets of just about anything and want to drill holes without the drill bits ripping & tearing through the product. The three pack available at Harbor Freight is just fine. Use a sharpie to mark your diameter on the drill and drill to the mark. Remove the mark with alcohol. Use the slow speed range on your drill. They are best for staying centered on a locator dimple and great for enlarging an existing hole.
Clothespins. They work and you can get a hundred of them at Walmart for $2.00.
Cans of vegetables. Great weights that don't cost anything to borrow. Just be sure to return them to the pantry.
~ MASTS & RIGGING ~
Vac-U-Boat may produce a basic sail & rigging set in the future. We do mean "basic". In the meantime, these manufacturers have quality rigging and accessories to get you sailing. This contact information is provided to assist you. Vac-U-Boat receives nothing from these vendors for providing this contact or service information. Vac-U-Boat provides no warranty for, or endorsement of their services. Do your homework. Get advice from your group. Make good decisions.
Click on the image for more information.
~ WHAT TO EXPECT WITH A VACUUM-FORMED PLASTIC HULL ~
Vacuum-forming plastic doesn't have the precision of injection-molded parts. This can be overcome with thoughtful mold design and attention to the vacuum-forming process. Artifacts can appear on the parts such as bridging over some details in the mold leaving a finished part that has a less-sharp appearance than the mold due to the thickness of the plastic sheet. On a hobby-level, such artifacts may be unavoidable. With very tall mold plugs, the sheet of hot plastic comes down onto the plug and vacuum is applied to pull the sheet tight against the mold plug forming the desired part. As the sheet comes down, plastic will touch the taller parts of the mold plug and be cooled by that touch. When vacuum is applied to draw and stretch the sheet of hot plastic against the shape of the mold plug, those areas that touched may not stretch as much as the parts of the sheet that didn't touch the mold before vacuum was applied. On a tall smooth surface like a boat hull, there may be a visible change in thickness, a transition line between the contact area and the rest of the hull.
The Vac-U-Soling hull will have such a transition line on the hull, more pronounced on the starboard side due to the design of the vacuum-forming machine. Side-lit, it looks like a shadow or ripple in the hull. It is only visible on the outside of the hull. The inside will be smooth. The transition marks the change in thickness of the plastic. The plastic closer to the keel is thicker than the area closer to the deck. It is more pronounced than the transition lines on vintage Soling1M hulls due to the different plastic used and the higher vacuum needed to form the Vac-U-Soling hull incorporating the transom into the hull. If you hold it up to a bright light and look through the plastic, the darker areas are thicker and the lighter areas are thinner. The drop-off in thickness is the visible transition line.
The transition line is mostly visible when the hull is upside-down and light is coming from overhead. Right side up, no shadow is cast so it is not obvious. The builds shown on this page have transition lines but they don't show up in the photos. There are reports that it can be improved by careful sanding of the thicker side to widen the transition area making it cast less of a shadow. That requires some sanding skill and an assortment of sandpaper in the 800 to 2000 grit range. In my opinion (ASE Certified Master Rep/Refinish Technician - Retired) there is a greater chance that sanding may leave noticeable surface texture or scratches visible from any angle. I would expect no practical effect on the hydrodynamic properties of the hull because it is only a few thousands of an inch difference and the flow of water follows the curve of the transition.
The vintage hulls had the same transition line, although a
little less noticeable mostly due to the properties of ABS plastic verses HIPS
plastic and the higher vacuum used to form the Vac-U-Soling hulls. ABS plastic
has more tensile strength when hot causing the transition line to stretch wider,
casting less of a shadow when cooled.
~ QUESTIONS & ANSWERS ~
~ MAINTENANCE & REPAIR ~
Links to videos showing how to do stuff.
~ CUSTOMER COMMENTS ~
PRODUCTION KIT FEATURES
Paint, servos, sail servo arm, rigging lines, glues & sealants shown are not included.
Click on photos below to enlarge.