Seasonal water storage is not just a matter of convenience, but a critical step in determining the resource of your equipment. Many boat owners make the mistake of leaving the attachment engine hanging on the transom of the boat or, worse, lying on its side on the ground. Boat-engine stand It is a mandatory element of the boating equipment, which ensures the correct position of the unit during transportation and wintering, and ignoring this rule can lead to deformation of the lower unit pipe and problems with the cooling system.
Properly selected support allows the engine to be in a strictly vertical position, which prevents oil from flowing out of the crankcase and moisture into the exhaust system. In this article, we will discuss in detail what types of supports exist, how to calculate the dimensions for a particular model and whether you can make a reliable design yourself, saving your budget. Yamaha, Mercury or Tohatsu for years to come.
Why you need support for engine storage
The main function of the stand is to fix the engine in a working, vertical position outside the water. When the motor is hanging on the transom, the weight of the unit is distributed unevenly, creating excessive pressure on one side of the transom of the boat, which is especially true for inflatable PVC vessels during prolonged storage. Moreover, in the "transom" position, it is often impossible to fully preserve the cooling system by draining the residue of water, which can rupture the cooling shirt when freezing.
The use of a dedicated rack allows you to carry out maintenance without any problems, and you get full access to spark plugs, fuel pump, impeller pump and propeller. Fixed support It frees the transom, allowing the boat to dry and prevent material from rotting at the engine attachment site, which is especially important for wooden trunks or plywood insertion sites in PVC boards.
In addition, the stand serves as a reliable anchor when starting the engine "dry" during preventive checks. Without rigid fixation, the engine can twitch at start, which is dangerous for the operator. Some models of racks are equipped with wheels, which turns them into a full-fledged cart to move the heavy unit on hard ground or concrete floor of the garage.
For long-term storage (more than 2 months), it is recommended to remove the motor from the boat and install it on a stand in a heated room to prevent corrosion of electrical contacts.
Criteria for the selection of the finished model
The water accessories market offers a wide range of solutions, from simple metal tripods to complex adjustable wheeled systems. When choosing, pay attention to the load capacity. It should exceed the weight of your engine by at least 20-30%. For example, for a 30 kg motor, it is better to choose a rack with a margin of up to 40-50 kg so that the structure does not stagger.
The second important parameter is the adjustment of height and width of grip. Engines from different manufacturers and years of production can have different geometry of the lower unit leg and the location of the fasteners. Universal models allow you to adjust the position of the clips, making them suitable for a fleet of vehicles from several engines. It is also worth assessing the material of manufacture: steel with powder paint is stronger, but heavier than aluminum, which, in turn, is not subject to corrosion.
- 🏗️ Type of construction: T-shaped racks (budget, require fastening to the floor or wall) and self-supporting frames (mobile, stable).
- 🎚️ The locking mechanism: Clamps on bolts (reliable) or quick-clamp levers (more convenient for frequent change of motors).
- 🚚 Mobility: The presence of pneumatic or polyurethane wheels greatly facilitates logistics in the garage.
Manufacture of the stand DIY: drawings and materials
For many aquatic motorists, making a stand DIY becomes the preferred option, allowing you to take into account the individual specifications of the garage and budget. The most popular and reliable design is a welded frame from a profile pipe. To manufacture you will need a profile square tube (for example, 40×40 mm or 50×50 mm) and a corner to create a seat under the flange of the engine.
The key element of the homemade is the top pad, which simulates a transom, which must be made of a sheet of metal at least 4-5 mm thick to prevent deformation under the weight of the engine. This sheet drills holes corresponding to the standard motor attachment scheme (usually two vertical rows of holes), the distance between them should be adjusted or be universal, covering most models.
It is important to provide a stop for the lower unit pipe (motor legs) to prevent rocking of the structure, this can be an additional horizontal profile at a height of 30-40 cm from the top or an adjustable screw stop. Welds must be cleaned and coated with anti-corrosion primer and paint, since garage conditions often imply high humidity.
☑️ Materials for assembly
Compatibility and size table
When designing or buying a rack, it is important to consider the dimensions of the lower unit pipe. Below are indicative dimensions that will help determine the required grip width and height of the rack for different power classes.
| Motor class | Weight (roughly) | Recommended height of the rack | Transnant capture width |
|---|---|---|---|
| 2-6bhp (two-stroke) | 10-15 kg | 80-90 cm | 200-300 mm |
| 9.9-15 hp | 35-45 kg | 90-100 cm | 300-400 mm |
| 30-40 hp | 60-80 kg | 100-110 cm | 400-500 mm |
| 50+bhp. | 90+ kg | 110-120 cm | 500-600 mm |
Note that the height of the rack should provide a separation of the screw from the floor by at least 15-20 cm to prevent damage to the blades and the possibility of installing a tank for draining oil under the crankcase. For heavy motors, it is recommended to increase the area of the support (base) to increase stability.
⚠️ Attention: When welding the structure yourself, do not use a thin-walled profile designed for furniture. Vibrations of the working engine during inspection or simply static load can lead to the destruction of welds and the fall of the heavy unit.
Rules for installing the motor for storage
The process of putting the engine on a stand requires a certain sequence of actions for the safety of the operator and the integrity of the equipment. First, the motor must be removed from the transom. If the engine is heavy, it is better to do it together. One person holds the lower unit, the second unscrews the fastening nuts. After removal, the motor is transferred to the prepared rack.
Set the motor vertically, combining flange holes with holes on the rack. Secure the engine with standard bolts or special clips, ensuring a tight fit. bracket It should be fixed so that the motor cannot move sideways even in the event of an accidental push. If the rack has a wheel drive, make sure the brakes of the wheels are locked.
After fixing, do the conservation procedures. For two-stroke engines, it can be spraying a fog of conservatory oil into the carburetor when you're working, for four-stroke engines, changing the oil and filter. Be sure to remove the spark plug and add some oil to the cylinder by turning the crankshaft several times.
Do I need to remove the screw?
Remove the propeller during winter storage is not necessary if the motor is on a stand in a dry room. However, if there is a risk of accidental impact of the screw against solid objects when moving the rack, it is better to dismantle the propeller and propeller shaft, lubricating the shaft with solidol.
Common errors in the organization of storage
One of the most common mistakes is to keep the motor horizontal, and many people think that if you drain the oil and the gasoline, you can put the engine on your side. This is a misconception. There are always pairs of oil and microdrops in the crankcase, which, when lying down for a long time, can cause the mirrors of the cylinders and crankshaft bearings to corrosion due to the uneven distribution of lubrication.
Another mistake is to keep the motor on an open-air stand or in an unheated, raw shed without a protective case, and even painting the rack and the engine body in a good way won't save you from the condensation that comes from temperature changes. CDI The modules or sensors that cause the contacts to oxidize, resulting in electronic failure in the spring.
- ❌ Lack of ventilation: Cover the engine with a dense polyethylene "silently" is impossible, a greenhouse effect is created inside.
- ❌ Unstable support: Use rickety wooden boxes or bricks instead of a specialized rack.
- ❌ Ignoring fuel: Leave gasoline in the carburetor for the winter, which leads to its evaporation and the formation of resins that clog the jellyplants.
⚠️ Attention: Never store a full-fuel engine in an enclosed garage without ventilation, and gasoline vapors are heavier than air and can accumulate near the floor, creating explosive concentrations.
Ideal storage is vertical position, lack of moisture, stable temperature and (periodic) visual inspection of the condition of the fasteners and paint.
Frequently Asked Questions (FAQ)
Can I store the outboard motor at sub-zero temperatures?
Yes, if you can do it properly, the main thing is to completely remove the water from the cooling system (purging or antifreeze) and drain the fuel from the carburetor. Rubber seals will bluff in the cold, so it is not recommended to move the gear levers until the engine is fully warmed up in the spring.
Which is better: metal or wood?
Metal stand from the profile pipe is more durable, resistant to vibrations and takes up less space. Wooden structures (100x100 mm timber) are cheaper and easier to manufacture without welding, but over time the wood can dry out or absorb moisture, which will reduce stability.
Do I need to lubricate the stand before storage?
Yes, the contact points between the metal of the rack and the motor flange are recommended to be lubricated with lithium lubricant or graphite, which will prevent parts from sticking together (“electrochemical corrosion”) and make it easy to remove the engine next spring.
Will a car from one brand of motors fit another?
90% of the time yes. The standard for fastening the diewood pipe (the distance between the mounting holes) is uniform for most manufacturers (Yamaha, Honda, Mercury, Tohatsu, Suzuki), except for some specific models of electric motors or very old Soviet engines.