Products we make:         


Since R/C boating in Brazil is just in the beginning stages and to have a boat requires special     equipment and parts not available in our hobby shops, we started to manufacture many of our own products locally.
Hulls and RTR boats
Monohull Apache 50"
Catamaran 50"
Catamaran 43"
Tunnel for 3,5cc outboard (also a 7,5cc model)
Sail boat M" class, 50"
Sail boat mast 
All sailboat hardware.



Engines and complements:

Water jacket
Engine hop up in 3 stages


motHusq01.jpg (37784 bytes)
Fiber glass wet tuned pipe (under development) tunedpipe01.jpg (9277 bytes)
William always thought that US$ 129,00 were too much for a tuned pipe. The only solution was to make his own, which is seen here on a Zenoah being hoped-up. The engine mounts are also Shark-Racing tunedpipe02.jpg (137904 bytes)
Exhaust manifold (under development) coletorescap01.jpg (9008 bytes)
Drive train
Square drive Flex cable adapter, good for all engines, because it has a 1/2" bushing that can be changed to fit whatever engine you use  conexaoquad01.jpg (9404 bytes)
Ferrule ferrule01.JPG (4667 bytes)
Two views of Shark Racing drive after finished, yet a prototype.  Sharkdrive01.jpg (11280 bytes)
Fernando is the owner of this one. Knowing him as we do, he will give a nice finish to it.  Sharkdrive02.jpg (32295 bytes)
As expected...  Sharkdrive03.jpg (19547 bytes)
Fernando did a good job on the drive. Sharkdrive04.jpg (19138 bytes)
Rudder (under development) leme01.jpg (18872 bytes)
Fail safe - 1™ generation
Fail Safe + Battery Control - separated elements, just a prototype, never in productions replaced by the 3™ generation
Fail Safe e Battery Control altogether - 3™ generation
Fail Safe BC-II - Fail Safe with Battery Control and LED indication for RX battery charge.  - 4™ generation FS05.JPG (32783 bytes)
Fail Safe BSC-III - Fail Safe with Battery Control, LED indicator and Servo Sensor  - 5™ generation FS07.jpg (38667 bytes)
Fail Safe PCM - specially developed for Futaba PCM radios, has not the TX signal circuit, that already is part of the Futaba radio FS08.jpg (83245 bytes)
BSC-III Fail Safe assembled, before the resin. It is more than just a few electronic parts. Really, 22 different components, 25 parts.
Two assembled Fail Safes, in the mould with resin
A closer view
The new fail safes are glassed in this position. So, we managed to better protect the wires, that have now a bigger portion embedded by resin.
Radio box and fail safes


cxradiofail01.jpg (11493 bytes)
Mounts for gas engines (A)
Strut for rudder and prop shaft
Turn Fin (C) 
Prop shafts (D)
Antenna mounting (E)

Water pick-up (F) 

Intake manifold for big bore carbs (G)
Ferrule∑ 3/16 x 3/16, 1/4 x 1/4 e 1/4 x 3/16  (H) 
Square drive (I)
Tail nut (J)
Sail boat pulleys (L)
Teflon thrust washers (M)
diversos01.jpg (16255 bytes)
Engine and miscellaneous diversos02.jpg (38210 bytes)

New development: special flywheel for  originally water cooled engines.
Everything starts with a round aluminum bar stock

VolanteZen01.jpg (33196 bytes)
This tool is also made to fix the bar to the lathe VolanteZen02.jpg (19487 bytes)
This is the flywheel, after lathe work. We were thinking of 2 keyways, one at the original position, the other one advanced. But it looks like too much advance. We are thinking in another solution. VolanteZen03.jpg (18424 bytes)
Developments on Apache and Cyclone hulls
A deeply altered Cyclone: cut off hull (1"), seamless hull/deck joint, air outlets at the back and new air inlets. Epoxy hull. Cymold01.jpg (41458 bytes)
Cockpit and air inlet detail. Cymold02.jpg (49802 bytes)
Front view of the model. Cymold03.jpg (52373 bytes)
Another cockpit detail. The idea is making room for a Zenoah, without cutting the deck.  Cymold04.jpg (29348 bytes)
The boat ready, yet no engine and hardware
An even more radical work: over an original Apache, an completely new deck. The hull will be cut off 1".
The new deck, front view: no windshield as the cockpit will be a bubble, off shore stile. An air inlet will be cut at the front.
At the transom, again a new design. Angled ends, prepared for air outlets.
The hull, already cut.
The hull extensions and cabin being shaped WhiteSharkmold05.jpg (46812 bytes)
A front view WhiteSharkmold06.jpg (48159 bytes)
Cabin detail. The idea is accommodate any engine. WhiteSharkmold07.jpg (36659 bytes)
A front view, with the deck final design. WhiteSharkmold08.jpg (51313 bytes)
Deck detail and front air intake. In preparation, a big air scoop "a la" Formula One. WhiteSharkmold09.jpg (27701 bytes)
Viewing from the rear, the deck/cabin lines and the rear extensions are cleared show. WhiteSharkmold10.jpg (37637 bytes)
The bottom, being prepared as a plug for the mold. WhiteSharkmold11.jpg (42539 bytes)
A ruler shows no hooks and no rockers.  WhiteSharkmold12.jpg (24047 bytes)
Painted, ready for #600 sanding before polishing WhiteSharkmold13.jpg (46012 bytes)
The deck with gray primer. All the imperfections become apparent to make esy the corrections. WhiteSharkmold14.jpg (43632 bytes)
The cabin final shape and the surface air intake WhiteSharkmold15.jpg (36872 bytes)
This is the side requiring more attention. WhiteSharkmold16.jpg (48253 bytes)
Shaping the main air intake WhiteSharkmold17.jpg (44059 bytes)
The scoop will lean over the pilot cabin WhiteSharkmold18.jpg (45562 bytes)
A rear view WhiteSharkmold19.jpg (45806 bytes)
The wet side mold being finished. WhiteSharkmold20.jpg (119609 bytes)
Front view WhiteSharkmold21.jpg (125524 bytes)
The mold, being reinforced
Another view. Reinforcement is important to prevent wqarping
Another mold, with reinforcement for vacuum molding
Inside view, with the PVA film
Another angle
A complete view from the plug WhiteSharkmold22.jpg (93699 bytes)
Cockpit and deck - a perfect fit WhiteSharkmold23.jpg (95753 bytes)
Front view, another air intake WhiteSharkmold24.jpg (80159 bytes)
Cabin detail and main air intake WhiteSharkmold25.jpg (53726 bytes)
The plug, painted to underscore the imperfections
Front view, with the 2 air entrances
Back view with the new air exit
3/4 view. Now, its time to smooth the plug, correct the imperfections and prepare the deck mold.
Imperfections corrected, waiting for drying and sanding the plug WhiteSharkMold35.jpg (64386 bytes)
Front view WhiteSharkMold36.jpg (45266 bytes)
Back side WhiteSharkMold37.jpg (54282 bytes)
Drawing the lines for cutting the cowl
Final cut
The cowl, separated from the hull
Windshield detail, darkened for visualization
The newest product from Shark Racing: stainless steel pipes
On salt water, the only way, on fresh water will last for ever escapinox01.jpg (26590 bytes)
Another view escapinox02.jpg (26187 bytes)
The coupling detail escapinox03.jpg (43959 bytes)
The stinger escapinox04.jpg (41883 bytes)
Another model, this time wrap to the center escapinox05.jpg (27493 bytes)
Curvature detail escapinox06.jpg (36309 bytes)
Another detail, in close up. Believe me, its hard to work with stainless steel escapinox07.jpg (41800 bytes)
Another angle of the whole pipe escapinox08.jpg (30029 bytes)
A water cooled coupling in stainless steel. It will not be sold: too heavy, too much trouble to be made - but would last for ever flangeinox01.jpg (29776 bytes)
The other side flangeinox02.jpg (28817 bytes)
Pipe for a G-42 from MS. The original system of heli coils to fix the pipe was too tricky, to say the least escapinox09.jpg (32820 bytes)
Coupling at the engine and pipe. A much better way to fix the pipe - besides, it allows water cooling. escapinox10.jpg (40990 bytes)
An array of stainless steel pipe ready to go to the engines escapinox11.jpg (45877 bytes)
This pipe was made by Shark Racing for a member of Jim's board Tompipe01.jpg (45039 bytes)
Custom made by the figures he sent to us. Tompipe02.jpg (48417 bytes)
This tuned pipe was assembled on my Top Gun. 3 months without use and this is how it is. Any doubt why we need stainless steel pipes?
A Shark Racing tuned pipe in place. Much better...
P.S. on the same place, by the same time.
Larry Ingelson posted a design for this muffler and authorized everyone to use it..
This is what we get in stainless steel. A little heavy for racing, and the performance was bellow the expected
All our pipes, from now on, have a support for a muffler and for fixing it on the hull
At front, a QD 35 pipe inboard for a Cyclone. Behind, a Homelite pipe
Aluminum water cooling coupling 

The birth of a stainless steel tuned pipe:

1. molds for cutting the S/S plate


2. preparing the belly
3. brazing the belly 
4. an already brazed cone
5. a pipe without finishing
6. painted with the acid that takes off the brazing marks
7. sanding the excess weld
8. finishing the welds
9. polishing
10. the final product
New tuned pipe being tested: the header length is adjustable but there is no need to cutting it. A 7/8" goes into a 1"  tube, any length can be taylored to adjust the pipe to the engine being used. This is the bigger length
The smaller length
The pipe finished. We are testing the sealing - without O-rings
My old, bravo and faithful Homelite deserves a new pipe
If it doesn't fit at the port side, because of the engine angle mounting, lets go to the starboard
The header circles the engine
A back side view 
Under development: stainless steel gas tank (next in aluminum). Extremely easy to connect, a internal angled bottom to conduct the gas to the pick-up tube, integral venting system contamination proof.
The open tank. Visible, the angled internal bottom
Brazing the cover
Leo and Oton, the s/s experts
The final productt. Just one connection 
The tank, ready to be assembled in a Aeromarine cat 50"

Copyright © 2000 - Carlos Andrade