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Summary of Contents for RC-Hydros UL1AB
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Page 1: Assembly Instructions
UL1AB and UL1FG (ABS and Fiberglass) Assembly Instructions UL-72 Pocket Mechanic UL-10 Wiggins UL-125 Wild Fire Last revised: 1/27/01 AMK RC-Hydros.com – 409 South Sixth Street – Phillipsburg, NJ 08865 – FAX 908-454-7882 http://www.rc-hydros.com support@rc-hydros.com... -
Page 2: Safety Notes
SAFETY NOTES WARNING! Electric hydroplanes are NOT toys. Improper use may be hazardous to swimmers, boaters, and other model boats, as well as to the operator! This product is not recommended for use by minors without close adult supervision. It is strongly recommended that the user be a member of one of the national model boating organizations (listed below) and that he/she adhere to all safety rules of that organization. - Page 3 Due to the fact that these boats are intended for use ONLY by experienced modelers, and that organized competition will frequently cause racers to push their equipment well beyond the design limits, RC-Hydros.com is NOT liable for ANY misuse of this product. Assembly or operation of this product implies acceptance of this policy.
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Page 4: Specifications
SPECIFICATIONS Length: 24.5” at deck (622mm) Width: 11” (330mm) Weight: 40 oz (Ready to run except cells) (2.2 kg) ABS hull with Cordite motor. The ABS and fiberglass hulls weigh virtually the same and are equally strong. The ABS is much easier to build and finish, but fiberglass has “snob appeal.” Sport Recommendations: Motor: Graupner 700BB (included in GR1157 Hardware Package) - Page 5 The UL1 is intended to be built using the Graupner “Taifun” drive assembly, available from either RC-Hydros.com or from Hobby Lobby. The part number for both places is GR1157, and must be ordered separately (it is available at a discount as part of UL1ABC package).
- Page 6 Step-by-step assembly Wash the boat inside and out with mildly soapy water to remove any dust left from the manufacturing process. It is recommended that you use rubber gloves to avoid getting splinters into your hands. After washing, start sanding the exterior. You want to make the hull as smooth as possible for optimum performance and appearance.
- Page 7 3 3/4" 2.5" 5.5" 10" 13.75" Make lines 3/16” off the centerline on either side, from the 2½” to 5½” marks. This defines a box which will later be cut out to allow the installation of the Graupner stuffing box. We will call this “Area A.” If you are setting up your boat for racing, it is wise to offset the prop shaft at an angle.
- Page 8 ABS: Use coarse (80 grit) sandpaper to slightly roughen the bottom of the motor mount. It is often wise to drive several 1/8” diameter holes in the bottom of the mount, as the plastic for this does not always bond well to the glue. Slightly roughen the interior of the hull with some 240 grit paper.
- Page 9 the profile that the stuffing box will have. This will minimize the need to add filler material later. If you are using an off-center driveshaft, be sure you cut appropriately. ABS: READ STEP 9 NOTE BEFORE CUTTING! After the glue from Step 6 is cured, use a sharp hobby knife to cut the Area A out of the hull.
- Page 10 ABS: Use a silicone-based sealant to fill the hole around the stuffing box. BE SURE TO CHECK THAT THE SEALANT YOU SELECT IS COMPATIBLE WITH PLASTICS. More than one person has found out the hard way that they picked the wrong one! Epoxy or CA scrap 1/8”...
- Page 11 ALL: The radio receiver and receiver battery pack should be located in the same compartment as the servo. Ideally, the antenna should exit the hull at a reinforced area. It is recommended that a piece of 1/8” ply 1” x 1” with rounded corners be added inside the deck at the place you wish to locate the antenna exit.
- Page 12 ABS: Velcro-brand fastening with “peel-and-stick” adhesive on the back works quite well in a plastic boat. It is necessary to clean the plastic first using a fine sandpaper followed by rubbing alcohol. We have tried non-brand- name hook-and- loop fastenings, and found them to be unsatisfactory in the long run.
- Page 13 Pocket Mechanic, Bright Yellow for others). Photos of the model and real boats are available on the RC-Hydros.com web site. Visit us at on the Internet to see how to decorate your boat according to a scale finish, or use the official photos available at www.ulrs.org.
- Page 14 The UL-125 is identical in design and construction to another boat, the UL-72 Pocket Mechanic (see photo below). Photos of the UL-72 are available on the Internet as well. It is a bright red boat with white trim. Cut vinyl decals for this scheme are available from RC- Hydros.com.
- Page 15 6 laps. Extremely high speeds are possible with this boat when using a Cordite motor (available from RC-Hydros.com) and the proper setup. The Cordite motors require that the boat be set up with a rather shallow prop angle. An X637 seems to be the optimal prop in this configuration.
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