Answering buyers seeking compact, 20 hp range outboards with short shafts, this guide highlights suitable options and practical trade-offs. The top picks below are best for anglers, small-river cruising, and dinghy-to-small-boat setups where a shorter shaft helps with stern height and lightweight handling. Each entry notes who it’s best for, why selected, and a small caveat to consider before purchase.
Summary table of selected products:
- DUIBAII 18HP Short Shaft Outboard
- LIWBYYG 12HP Short Shaft Outboard (169CC)
- PERFERATE 12HP Short Shaft Outboard (169CC)
- BJTDLLX 18HP Long Shaft Outboard
- HANGKAI 6.5HP Short Shaft (4-stroke)
DUIBAII 18HP Short Shaft Outboard Motor
Brand: DUIBAII
Features: Lightweight aluminum alloy with spray painting for wear and corrosion resistance; water cooling system; CDI ignition; 18hp two-stroke with a maximum 5500rpm; 8-inch three-blade propeller for reduced water resistance; external fuel tank of 6.34 gallons; efficient carburetor and fuel consumption around 1.18 gallons/hour.
Best for: Small boats, dinghies, or craft that require a compact, short-shaft engine with solid speed and steady fuel use. Suitable for freshwater and saltwater use.
Limitations: Data emphasizes fuel economy and power; longer-term serviceability and availability of parts are not specified in the listing.
LIWBYYG 169CC 12HP Short Shaft Outboard
Brand: LIWBYYG
Features: High-quality aluminum alloy and anti-corrosion paint; corrosion resistance suitable for freshwater and saltwater; 12hp two-stroke engine; three-blade propeller reduces water resistance; 6.34-gallon external fuel tank; CDI ignition; rubber throttle and ergonomic design for fatigue-free operation.
Best for: Anglers and recreational boaters needing a compact yet robust 12hp option with a short shaft for shallow or flatter sterns.
Limitation: Power output is lower than 20hp models, which may affect heavier loads or larger tenders.
PERFERATE 12HP Short Shaft Outboard
Brand: PERFERATE
Features: 12hp two-stroke engine; 169cc displacement; water cooling; CDI ignition; designed for fishing boats and yachts; documented speed range of 15-30 km/h; three-speed cruising through a continuous variable transmission system.
Best for: Small fishing boats where reliable, easy-to-start power is required and a short shaft is necessary for maneuverability in tight spaces.
Limitation: The listing emphasizes cruising and speed bands but lacks detailed runtime or maintenance intervals.
RYIRSHOH 18HP Long Shaft Outboard
Brand: RYIRSHOH
Features: 246cc long-shaft, corrosion-resistant aluminum alloy; water cooling; 18hp two-stroke engine; 4500-5500rpm range; three-gear forward/neutral/reverse; improved water resistance with a streamlined three-blade propeller.
Best for: Boaters needing extra shaft length for deeper water clearance or taller transoms; compatible with larger tenders or boats that require longer reach from stern.
Limitation: Long shaft may not fit boats designed for short-shaft motors; heavier than short-shaft equivalents.
BJTDLLX 18HP Long Shaft Outboard
Brand: BJTDLLX
Features: 2-stroke 18HP long-shaft engine; 246cc displacement; large 6.34-gallon fuel tank; multiple cooling holes and water cooling system; manual start; 360-degree steering capability; forward/neutral/reverse with CV cruising.
Best for: Operators needing robust propulsion with extended shaft length for deeper water clearance and long-duration boating; suitable for short to mid-range cruising.
Limitation: Long shaft adds weight and potential stern clearance challenges on small, compact hulls.
HANGKAI 6.5HP Short Shaft Outboard
Brand: Gosangom (Hangkai)
Features: Aluminum alloy construction; 6.5hp 4-stroke power; water-cooled system; suitable for both saltwater and freshwater use; relatively low fuel consumption with a 12L tank capacity.
Best for: Very small boats, inflatables, light fishing dinghies where compact, easy-start performance is desired and space is at a premium.
Limitation: Significantly lower horsepower, which may be insufficient for heavier loads or faster cruising.
Buying Guide
- How important is shaft length? Short-shaft models (typically around 15-20 inches) fit flatter transoms and smaller boats; long-shaft variants extend reach for deeper stern clearances but add weight and may not fit all hulls.
- Power needs vs. boat size: For light dinghies and inflatable tenders, 6.5–12hp can be adequate. Heavier loads or plans with higher speeds may require 18hp or more, noting that two-stroke engines provide strong torque but can have higher fuel consumption than four-stroke equivalents.
- Fuel capacity and efficiency: Look for external fuel tanks and efficient carburetors or EFI where listed. A larger tank reduces refueling stops on longer trips, but adds weight.
- Cooling and maintenance: Water cooling reduces overheating during extended use. Check ease of access for maintenance and the availability of replacement parts in your region.
- Ignition and startup: CDI ignition and convenient manual or electric start matter for reliability in saltwater or cooler climates.
- Durability and materials: Aluminum alloys and corrosion-resistant coatings extend life in marine environments. Consider saltwater use implications and protective coatings.
- Ease of operation: Throttle handling, geartooth modes (forward/neutral/reverse), and cruise or CV features influence day-to-day usability, especially on smaller craft.
Frequently Asked Questions
- What shaft length should I choose for a small boat?
– Choose short shaft for shallow transoms and flat hulls; long shaft if you need deeper water clearance for larger tenders or higher transom heights. - Are 18hp engines suitable for inflatable boats?
– Yes, in many cases, but ensure hull Rating and weight capacity align with the engine’s weight and the boat’s design. - What maintenance is typical for two-stroke outboards?
– Regular inspection of fuel lines, spark/ CDI system, and cooling passages; ensure proper fuel/oil mix where required; service intervals depend on usage. - Is a larger fuel tank worth it for occasional use?
– For longer trips, a larger external tank reduces refueling stops; for casual, shorter outings a smaller tank can reduce weight. - Can I use a long-shaft engine on a small dinghy?
– It may be incompatible with transom height and may cause steering and clearance problems; verify boat specifications before purchase. - Do these engines support gear-speed control?
– Some models offer forward/neutral/reverse with variable speed or cruise features; check the specific model listing for cruising options.