In the era of mass production of aluminum motobodies Progress 2 It has become a symbol of reliability and accessibility for thousands of Soviet fishermen and tourists, and even though it has been discontinued for a long time, interest in its performance and design features is not fading. Boat drawing Progress 2To repair damaged elements, make missing parts or simply understand the principles of building this craft.
Searching for quality technical documentation online is often a challenge due to the poor quality of the scans and the lack of original factory specifications in the public domain. However, with basic knowledge of the geometry of the case and materials, you can recreate a complete picture of the design. In this article, we will discuss in detail the design of the case, the key dimensions and nuances that need to be considered when working with this legendary aluminum project.
Understanding how it works aluminum-boatIt will help not only in repair, but also in competent modernization, and the right scheme of actions will extend the life of your vessel for many years, while maintaining its driving qualities and safety on the water.
Historical background and features of the model
Boat. Progress 2 It was developed in the early 1960s at the Kuibyshev Progress Plant as an improved version of previous models, with the main goal of creating a versatile vessel suitable for cruising, fishing and hiking in reservoirs and large rivers, the design was simple and technological, which allowed to produce large quantities even with limited equipment of factories of the time.
The main feature of the model was aluminum-platingIt was attached to a set of frames and stringers, and unlike the earlier Kazanoks, seaworthiness was improved by a sharper bow and increased height, which made it more confident to be on the wave, although stability remained a critical parameter requiring careful load distribution.
The material for the case was aviation aluminum brand D16T, which is highly durable, but is subject to corrosion when in contact with certain metals. rivet The boats were carefully designed, and all joints were sealed with special compounds, and the durability of the boat was directly dependent on the quality of assembly and regular maintenance.
Main technical specifications of the body
In order to create or restore Boat drawing Progress 2The size of the hull determines its driving performance, load capacity and passenger capacity, and any deviation from factory parameters during repairs can lead to changes in centering and deterioration of handling.
The hull is 4,600 mm long on deck, which makes the boat a mid-range motorcycle, with a mid-range width of 1,500 mm, which provides acceptable stability, but requires care when moving passengers. The height of the mid-range is 520 mm, which is a compromise between spray protection and the sailing of the vessel.
An important parameter is keel-point Progress 2 has a speed of about 8-10 degrees, which allows decent speeds, but requires a motor of at least 12-15 hp to go into full load plane. The body weight without equipment is about 140 kg, which requires the use of a trailer or slip to descent into the water.
| Parameter | Meaning | Note |
|---|---|---|
| Longest length | 4600 mm | By hull roundabout |
| largest width | 1500 mm | Midel-spangout. |
| Height of board | 520 mm | Midle. |
| Hull mass | 140 kg | No equipment. |
| Load capacity | 400 kg | Including the crew. |
Keep in mind that the actual measurements on older boats may differ from those in the factory because of the aluminium deformations during operation, so always take your own measurements and check them against the reference data before starting the restoration work.
Setting and skinning design
Basis of strength Progress 2 It's a power kit made up of spangoats, stringers and quilts, and the spangouts, or transom bulkheads, shape the body and sense the main pressures of the water, and they're made of aluminum profiles and sheet metal, connected by corners.
The longitudinal rigidity is provided stringerAnd these are the hulls that are attached to the hull, which are the hulls that are loaded onto the rods, and the hull is reinforced by additional elements in the bow, because this area is most often hit by waves, and the quilson, which runs along the diametric plane, binds the rods and serves as a support for the floorboards.
When restoring the kit, use an aluminum profile of the same thickness as the original. Increasing the thickness of the metal unnecessarily will weigh the boat and may disrupt the weighting.
The skin is made of sheets of aluminum alloy thickness from 1.5 to 2 mm depending on the loading area. The side and bottom are connected by zygomatic profiles, which also act as a break. rivetSince welding duraluminium at home is extremely difficult and requires special equipment.
⚠️ Attention: When replacing sheets of skin, steel rivets or bolts are categorically not to be used. Contact of aluminum with steel in salt or even fresh water will cause rapid electrochemical corrosion that will destroy the body in one season.
transom plate and engine installation
Tranza Progress 2 It's one of the most loaded parts of the boat, and it's a vertical slab, reinforced by linings and connections to the bottom and sides, and it's where the outboard motor is attached, which creates significant vibrational and traction loads.
The factory design was to have motors up to 20-25 hp, but modern owners often tend to put more powerful engines, and in this case, you need to carefully check the condition of the transom. The strengthening of the transom is a mandatory step.
The tilt of the transom also plays a role. The standard angle ensures that the motor works normally, but modern long-leg engines may require adjustment of the suspension height, using special arcades or adjustable transom plates.
☑️ Translation check
When repairing a transom, it's important to keep it vertical and rigid. The transom's deflection into the boat under the influence of the motor is a common problem with old ones. ProgressTo eliminate this defect, additional struts are installed or reinforcing profiles are imposed on the inside.
Rehabilitation and repair of the aluminum case
Repairs aluminum-boat It's a time-consuming process, but it's feasible in a garage or workshop, and the main problem that owners face is leaking through the rivet seams and corrosively breaking down the sheets of skin, and the first step is always to wash and dry the case completely.
To detect any defects, the boat must be turned over and carefully examined. Cracks and corrosive sores often hide under a layer of old paint or dirt. Once defective spots are found, they are stripped to pure metal. If the corrosion has penetrated deeply, an entire skin section may need to be replaced.
Small cracks and holes can be sealed with cold welding for aluminum or special epoxy compounds with aluminum powder, but the most reliable method is to install patches of the same material as the case, followed by riveting and sealing.
How do you seal the seams?
For seam sealing, it is best to use specialized thiocol sealants (such as U-30MEC) or polyurethane compounds, which retain elasticity and hold water reliably even when the body is deformed. Silicone sealants are less suitable for this purpose, because they are less adhesive to aluminum and can detach over time.
When riveting, it is important to follow the step of installing rivets. Too rare riveting will lead to loose fit of the sheets, and too frequent will weaken the metal. The optimal step is 20-30 mm for loaded seams and 40-50 mm for less responsible joints.
Painting and anti-corrosion protection
The final stage of recovery Progress 2 Aluminum requires special surface preparation, otherwise the paint will quickly peel off, first the surface is degreased, then etching with special solutions or using rust converters if there are oxides.
It is best suited for the squashing. epoxyThe finish can be done with alkyd enamel or polyurethane paints, and the color scheme has traditionally included light blue, white and gray tones, which visually enlarged the boat and was less heated in the sun.
⚠️ Attention: Never use paints containing lead pigments (such as a meerka) in direct contact with aluminum without an insulating layer of soil.
Quality paint not only improves the appearance, but also protects the metal from mechanical damage and ultraviolet light. Regular renewal of the paint every 3-5 years significantly prolongs the life of the boat.
The quality of surface preparation (degreasing and primer) determines 80% of the success of painting an aluminum boat.
FAQ: Frequently asked questions
Where to find the original design of the boat Progress 2?
The original factory drawings can be found in the archives of Boats and Yachts magazine from the 60s and 70s, in specialized books on boat modeling or in powerboating forums. Often enthusiasts share scanned copies of operating manuals where there are diagrams.
Can the body of Progress be boiled with argon?
Theoretically, you can use a wire made of a similar alloy (D16T or AD31) and argon. However, it is difficult to cook dural because of its tendency to crack when heated. For amateur repairs, sealant rivets are often more reliable and easier to execute.
What is the maximum motor to be put on Progress 2?
The factory recommended engines up to 20-25 hp Modern owners successfully operate a boat with engines 30-40 hp, but this requires perfect translating condition and strict load control. Excess power can lead to translating or tipping.
How do you deal with the leaks on rivets?
If the boat is flowing over rivets, try to tighten them (if possible) or replace them with larger ones, often with rubber paint or liquid rubber covering the bottom that covers the micropores, and at the very least, a bulkhead seam with a sealant replacement.
How much does a Progress 2 boat weigh with equipment?
The weight of the empty body is about 140 kg. With the installed engine (30-40 kg), tank, anchor and personal belongings, the total weight can reach 200-220 kg. This should be considered when choosing a trailer and a car for towing.