Normally, for average performance boat, you need about one horsepower (hp) for every 25–40 pounds of weight (the range is wide because of all the different types and brands of boats you get). If you take 5000 and divide it by 200 (that’s a Suzuki DF200), you get 25 pounds per horsepower. And, 5000 divided by 125 is 40.
How do I choose the right engine for my boat?
The rule of thumb is based on weight alone, and says you should have between 40 and 25 pounds of weight for each horsepower. For example, a 5,000-pound boat could have an engine with between 125 and 200 horsepower.
How do I know what size motor for my boat?
To find an adequate horsepower motor for your small boat or dinghy, determine the mid-range, which is halfway between 2.5 hp and the maximum horsepower listed on the capacity plate. For example, if your boat is rated for a maximum of 20 hp, your mid-range horsepower would be 11.25 horsepower.
What size motor do I need for a 20 foot boat?
Center console boats from 20′-25′ can usually perform well with a single outboard from 200 to 300-hp, depending on load and top speed expectations. Over 25′-26′, twin engines are typically recommended.
What size motor do I need for a 25 foot boat?
If your boat is over 25 feet in length, a popular choice is to have twin outboard motors on the stern, usually in the range of 200-300 horsepower.
What size motor do I need for a 14 foot boat?
Typical horsepower for a 14-foot jon boat would be between 15 HP and 20 HP although up to 25 HP is not uncommon either. 20 HP can comfortably give you a top speed of 20mph, potentially even stretching to 25mph depending on weather conditions and the weight on the boat.
What size motor do I need for a 12 foot boat?
10 foot – 3 – 10 hp motor. 12 foot – 10 – 15 hp motor. 14 foot -15 hp motor. 16 foot – 15 – 20 hp motor.
What happens if you put to big of a motor on a boat?
If a higher than rated horsepower is installed, reinforcing the transom and hull structure may also be required. … However, it is important to ensure that weight is considered as a heavier motor could render self-draining cockpits useless and create wet cockpits as water enters scuppers from a sagging transom.
How fast does a 40 hp boat motor go?
40 hp – = 28 mph. 50 hp – = 31 mph.
How fast is a 10 hp boat motor?
10 HP Outboard: Speed & Runtime
|Power (Watt)||Speed (mph/kph)||Range (mile/km)|
How fast will a 2.5 hp outboard go?
It’s easy to handle and has convenient grab points for lifting. Yamaha F2. 5 Four-Stroke ($940; www.yamaha-motor.com) power: 2.5 hp weight: 38 pounds top speed: 5.4 mph noise at full throttle: 87 dB-A.
Can I put a bigger motor on my boat than its rated for?
Can I use a bigger motor on my boat than what it’s rated for? It is not a violation of Coast Guard regulations to install or use an engine larger than specified on the capacity label, but there may be state regulations prohibiting it, and restrictions from your own insurance company regarding this.
What determines max hp on a boat?
The federal government regulates the horsepower of outboard motors that can be installed on boats. The maximum HP is determined by calculating the boat’s factor (the length multiplied by the width) and then looking up the allowable engine size in a table.