“SALAMANDER” CLASS FSR

Today we offer RC modelers a high-speed hydroplane races for long, designed and built by famous Hungarian athlete Istvan of Salim. “Salamander” — the so-called new microtiter — has a number of features. For example, in order to model flooding and to reduce noise emanating from a thin shell of case-“cavity”, messageone section partially filled with polyurethane foam. The vibration transmitted to the housing of the engine, is reduced not only due to the installation of all engine mounts, rubber gaskets-absorbers, but also applying the printed parts of the base of the motor. The fact that the conventional PCB has unlike fiberglass the best shock-absorbing properties. The noise of the exhaust is possible to reduce cooling of the exhaust pipe part of the water coming out after the heat extraction from the engine. Ejection of the cooling water of the engine and the exhaust pipe is carried out on individual tubes. This simplifies the adjustment of fluid flow through two independent channels.

These techniques provide significant reduction of noise of the whole model, with no throttling of the exhaust, reducing engine power. The need for noise abatement actions is obvious — as in all other ship classes, in the class FSR the allowable level of noise is limited to a rather low value of 80 dB. To achieve such characteristics, serving as a kind of “pass” for the area (with increasing noise, the model is immediately removed from the race, the control of noise is carried out for all scoring heats), is not so simple. Literally, every node in speed microcamera have to decide, given the “vociferous” modern high-speed uprated engines.

Fig. 1. Section of the housing (refer sections correspond to Fig. 3).

 

Fig. 2. Installing the motor:

1 — motor base, 2 — screw, M5, 3 — ring gaskets-absorbers (rubber oil), 4 — clamping washer (steel) 5 — motor mount.

 

 

 

Fig. 3. RC sudomodel for long races with motor working volume of 3.5 cm³:

1 — housing (Vileika of fiberglass PA epoxy resin in a negative matrix form), 2 — the flywheel (brass, after treatment, to balance), 3 — pinion (steel alloy, extruding into the details of postures. 2), 4 — cone (brass), 5 — motor, 6 — outlet manifold of the cooling water from the jacket of the engine into the cavity of the exhaust pipe 7 — exhaust elbow (brass, solder Assembly silver solder the flange to fit on the engine), 8 — a hose for supplying cooling water to the jacket of the engine 9 conversion of the exhaust pipe (silicone rubber), 10 resonance exhaust pipe with additional camera noise suppression, 11 — fuel tank (plastic jar), 12 — clip on the rear part of the exhaust resonance tube, 13 — rocking party-Lera (steel), 14 — rudder (steel), 15 — gilmorey liner (steel, nylon sleeve-bearing to be pressed after processing), 16 — pad (glass fiber, glue in the hull on epoxy glue), a 17 — servo radio control, 18 — cover radio equipment (plexiglass thickness 5 mm glued on the contour of the strip of sealing rubber), 19 — transom, 20 — base brackets servos (glass fiber), 21 — rudder (spring steel with a thickness of 1 mm)A 22 — nozzle intake of cooling water for the engine 23, the nozzle of the ejection of cooling water, 24 — propeller shaft Assembly with the propeller (stainless steel), a 25 bushing alignment propeller shaft (steel), 26 — stern tube Assembly with bearing seal (steel seal — bronze), 27 — the bearing housing the propeller shaft (steel) 28 — the driven element u-joint (stainless steel) 29 — the intermediate element of the universal joint (alloy steel, when assembling the hinge in the recesses of the heads to put balls Ø 3 mm ball bearings), 30 — key element of the universal joint (stainless steel), 31 — reducer shaft (alloy steel), 32 — gearbox — engine mount (D16T), 33 — cone driven gear (brass), 34 — support sleeve driven gear (D16T), 35 to the driven gear (nylon), 36, 37, 38 — ball bearings 5X16, 39 — tubing cooling water (copper Ø 4X0,5), 40 — flexible rod in a soft shell to control the carburetor of the engine, the 41 base motor (the PCB in the housing to glue on the epoxy resin), a 42 — spacer (brass), 43 — tube drainage of the exhaust pipe, 44 — knot end conditions of the traction Assembly.

 

The letters A, B, C and d marked the bulkheads and formers made of balsa wood with a thickness of 5 mm.

Note the displacement of the axis of the propeller shaft relative to the axis of symmetry of the housing. It is necessary to compensate for torque of the propeller. The proposed attention model used screw, manufactured by “Graupner”.