Small tonnage metal boats are experiencing a real renaissance among boaters, and Rainbow 34 It's not just another modification of the classic Kazanka or Obi, it's an attempt to create a universal platform for fishing and recreation on the water, and the light alloy, the thoughtful geometry of the bottom and the availability of components make this model an interesting object to study.
Many owners face the need to refine factory solutions after the first trips. Aluminum alloy It requires the right approach to care, and the ergonomics of the cockpit often raise questions for tall people, and in this article we will examine all the nuances, from technical parameters to hidden modernization opportunities.
If you are considering buying a used copy or planning to upgrade an existing vessel, this material will become your knowledge base. We will not retell dry instructions, but focus on real-world experience in Russian latitudes.
Technical specifications and construction of the body
The basis of durability Rainbow 34 The body is made of aeronautical aluminum, which provides high corrosion resistance, provided that the welds are properly treated. The thickness of the bottom and sides varies depending on the year of manufacture, but the average is 2 mm, which is the same as the first one. Optimal balance between weight and strength for boats of this class.
The geometry of the hull is designed with buoyancy and stability in mind. The angular contours should not be taken as a design flaw; they provide maximum internal volume at a given length. This is critical for fishermen who need to place gear, sonars and supplies.
The design provides reinforced transom plates, designed for the installation of outboard motors with a capacity of up to 30 hp, However, it is important to consider that loading capacity It is distributed unevenly, and overloading the feed can lead to the nose burying in the wave.
- 🚤 Material: Aluminum-magnesium alloy AMg5M, resistant to salt water.
- 📏 Dimensions: Length full 3.40 m, width on the cheekbone 1.45 m, height of the board 0.45 m.
- ⚖️ Mass: The curb weight of the body without a motor is about 75-80 kg.
- 👥 Capacity: Passport capacity up to 4 people, but comfortable for two with full equipment.
The longitudinal and transom bulkheads are made with a margin of safety, but with aggressive operation on rocky rolls, deformations of the zygomatic stringers are possible. Regular inspection of these areas is mandatory.
Performance in water
Conduct Rainbow 34 In the water, it depends on the load and power of the engine installed, and in calm water, the boat shows enviable stability, allowing you to safely change fishing places even when standing full-length. sailability The body is high, which significantly affects the side wind.
When you go into the plane with a medium-power engine (15-20 hp), the boat willingly falls on the wing. The angle of the bottom contributes to a soft entry into the wave, but the reverse side of the coin is the lewdness on straight courses with strong lateral excitement. The steeringman has to constantly adjust the course.
⚠️ Attention: Due to the flat bottom in the bow, a hard hit (slap) is possible when going against the wave. It is not recommended to develop a full stroke when turbulent above 0.5 meters.
The boat's maneuverability is judged satisfactory by the owners, and to improve handling, many enthusiasts install additional zygomatic keels or transoms, which allows for balancing the course and lower fuel consumption.
The noise insulation in an aluminum boat is relative, and the sound of the motor and the splash of water are transmitted directly to the cockpit. antivibrational for an outboard motor and floor mats EVA significantly improves acoustic comfort.
Comparison with competitors: Rainbow 34 vs Kazanka-5M
The question of choice Rainbow 34 The Kazanka-5M is a classic of the budget segment, both of which have aluminum hulls and similar dimensions, but the philosophy of their creation differs. If Kazanka is a heavy tank for large reservoirs, then Rainbow is positioned as a lighter and more maneuverable solution.
The key difference lies in the welding technology and the thickness of the metal. Rainbow 34 It often wins in weight, which is critical for owners of small cars without trailers with a powerful winch, but Kazanka boasts more elaborate cockpit ergonomics out of the box.
| Parameter | Rainbow 34 | Kazankah-5M | Ob-3 |
|---|---|---|---|
| Length, m | 3.40 | 4.50 | 4.10 |
| Width, m. | 1.45 | 1.60 | 1.60 |
| Body weight, kg | ~78 | ~190 | ~145 |
| River power, hp | 30 | 60 | 40 |
| Passenger capacity | 4 people. | 5 people. | 5 people. |
When choosing, storage conditions should be considered. Rainbow 34 It is easier to preserve for the winter or to move to a garage due to its smaller dimensions, and Kazanka often requires a separate canopy or boatbox.
Popular modifications and DIY tuning
Purchase Rainbow 34 Most owners, sooner or later, come to the need for modernization, and factory execution is often Spartan, deprived of the comforts that the modern angler is accustomed to.
The first thing that's usually changed is the banquets and the knobs, and the standard seats are rigid and have no storage space for the little things. soft-plate With internal compartments, two problems are solved at once: comfort and space organization.
☑️ Checklist of minimum tuning
The second important step is electrification. Basic equipment rarely includes wiring. Self-mounting the on-board network with the output of USB sockets, the connection of the sonar and the navigator requires care. All connections must be soldered and protected by thermal shrinkage from moisture.
Trans wheels are another element without which the operation of a heavy (for one person) boat becomes torture. There are many ready-made solutions, but many build removable structures themselves using profile pipes and polyurethane wheels.
⚠️ Note: When drilling holes in the case for installation of accessories, be sure to use a polyurethane-based sealant. Conventional silicone will lose elasticity and leak over time.
The secret to a quiet move
Many owners of Rainbow 34 are unaware that an extra layer of vibro-insulating material (such as Vibroplast) pasted on the bottom of the inside in the engine compartment reduces noise by 30%, especially when catching predators who are frightened of vibrations.
Aluminum housing care and winter storage
Aluminum does not rust like steel, but it is subject to electrochemical corrosion and fouling. Oxide filmThe metal protector may be damaged by mechanical or aggressive environments, and regular inspection of the body after each season is mandatory.
If the boat is operated in salt water or contaminated water bodies, it is recommended to carry out a soft wash once a season using special aluminum products.
When stored in winter, it is important to ensure that air is accessible to the case. Rainbow 34 You can't have a tight tarp, because it creates a greenhouse effect and condensate that's more harmful than water itself, and you can use breathable covers or leave gaps for ventilation.
Transportation on a trailer also requires attention: the supporting rollers or pawns must be clean and free from damage, so as not to scratch the bottom. Prolonged storage at the same points of support can lead to local deformation of the skin.
Tip: Before you store it in winter, treat aluminum surfaces with a special Teflon polymer, which will create a hydrophobic layer that will facilitate spring washing and protect against oxidation.
Frequent malfunctions and methods of their elimination
Despite the simplicity of the design, Rainbow 34 It's not without childhood diseases. Most often, owners encounter leaks in the area of welding of the switches and the transom plate, and the vibration from the motor over time shakes the welded joints, if they were made with violations of technology.
Another common problem is backlash cans, often made in simple grooves that break over time, the solution is to install additional locks or seal the grooves with rubber pads.
Corrosion of fasteners is a scourge of all metal boats. Bolts and nuts, which are not adequately protected, "pin" dead. graphite-lubricant or copper anticorror on threaded connections during assembly will save you from problems with unscrewing in the future.
⚠️ Warning: Do not use metal shaving epoxy for repairing holes in the case without first welding or installing an aluminum patch. These "seals" are kept only on a static load and fall off when hit by a wave.
The main secret to the longevity of Rainbow 34 is regular anti-corrosion treatment and timely replacement of anode protection (if installed), rather than complex repairs after serious damage.
Final opinion and recommendations for purchase
Rainbow 34 It's an honest workhorse for calm water, and it doesn't claim to be a speedboat, but it does a great job of fishing and family cruising, and the model's greatest asset is the value of the cockpit.
When buying a used copy, first look at the corners and welds for cracks. The presence of dents on the sides is less critical, they can be fixed. The main thing is that the bottom geometry is not disturbed, otherwise the boat will not keep its course well.
For beginners who want to master the basics of boating sports and are not willing to spend huge sums on new PVC complexes, this boat will be a great start. With proper care, it will last for decades, even by inheritance.
In conclusion, it's worth noting that the spare parts and accessories market for these boats in the CIS is huge. You will always find something to replace a broken seat or strengthen a transom. Rainbow 34 It is economically viable even in a crisis.
Where do I look for parts?
Original parts from the manufacturer may not be available for sale, but 90% of the items (banks, keys, roumples) are unified with boats such as Kazanka and Ob. Look for components from the catalogues of aluminum boats of Soviet and Russian production.
What is the real load capacity of Rainbow 34, taking into account the equipment?
Although data-sheet figures may indicate 400 kg, the real safe carrying capacity for confident planing with a 20 hp engine is about 250-280 kg. This is two people of average build and a minimum set of equipment, exceeding this limit dramatically impairs driving performance.
Can I install 34 electric motors on the Rainbow?
Yes, it's a great option for quiet fishing. The boat is light, and the thrust of an electric motor of 30-40 lbs (pounds of force) will be enough to move comfortably against the current and wind.
Do I need to paint the body of Rainbow 34?
Painting is unnecessary if you are satisfied with the natural color of aluminum, the paint on aluminum is less stable than on steel, and requires special surface preparation (etching, primer), more often owners limit themselves to polishing or pasting film.
What is the minimum size of wheels required for a trailer for this boat?
For the Rainbow 34, given its light weight, a trailer with R13 wheels is enough, but for better terrain and stability on the road, it is better to use R15 wheels from passenger cars, which will allow higher towing speeds.
How to deal with condensation inside the boat?
The condensation is caused by temperature differences, and the best way to fight this is to use moisture absorbers in closed hazelnuts, and to dry the boat after every fishing trip, and don't leave the water in the hold, even a little bit.