Can I use a long shaft outboard on a dinghy?

Can I use a long shaft outboard on a dinghy?

However, a long shaft length works perfectly fine. You’ll want to stay away from shallow water to prevent hitting the floor. If the motor is too short, your motor will likely lose power due to cavitation. This occurs when the prop is positioned out of the water caused by the boat forming air bubbles around the prop.

How do you tell if your boat needs a short or long shaft?

Measure from the top of your transom to the bottom of your keel. If it is from 15″ to 17″ long you’ll need to get a Tohatsu outboard with a “short” shaft. If it is from 20″ to 22″ long you’ll need our “long” shaft outboard.

What happens if you put a long shaft motor on a short shaft boat?

RE:Long shaft, short transom Aside from losing several inches in draft, using a long shaft motor where a short shaft should be fitted will most noticeably effect your top end speed. You may also notice steering problems and will have a reduction in fuel economy.

What size outboard do I need for dinghy?

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 is the difference between short and long shaft outboards?

Short vs. Generally, short shaft outboards are 15 inches, long shaft outboards are 20 inches, and extra-long outboards are 25 inches. Since the length of the shaft of your outboard is associated with the size boat, smaller engines will generally have shorter shafts.

Can you make a long shaft outboard a short shaft?

Just because you change the way you use your boat doesn’t necessarily mean that you need to change the length of your motor’s drive shaft. Converting your long shaft outboard motor to a short drive shaft does, however, mean changing more than just the drive shaft.

What shaft length outboard do I need?

To do so, you will want to measure at the exact center of the transom from the very top to the very bottom. If it measures 15″ or with in a inch of that you will need a short shaft outboard. If it measures anywhere from 17″ to around 22″, then your going to want to go with a long shaft motor.

What’s the difference between long shaft and short shaft outboards?

Can you run a short shaft outboard on a 20 inch transom?

zike Elite Refuge Member. If you set the motor back far enough without jacking it up, a short shaft will work on a 20″ transom. Never argue with idiots as they will do nothing but bring you down to their level and then beat you with experience.

What size dinghy do I need?

Never forget that the storage capacity defines the size of the dinghy. As a general rule, a 2.50-m dinghy is sufficient for a boat of less than 12 metres, but for a monohull of more than 12 metres, it can be around 3.5 m long. For a catamaran or trawler at least 15 metres long, you can have a comfortably-sized dinghy.

How tall should the shaft be on a dinghie?

After that, you could choose the recommended shaft length based according to the transom height. For most small dinghies and aluminum boats under 15ft or 4.5m, extra short shaft and short will work, depending on the transom height, some over 40 cm / 15.7 inches, some not.

When to use a long shaft on a sailboat?

For boats with the transom height higher than 50 cm / 19.7 inches, a long shaft version is more suitable. For daysailers and short one-design racing sailboats, it depends on the position of the outboard mount.

Can a short shaft be converted to a long shaft?

A. Some outboards you can convert either way very easily, others require more work. Johnson / Evinrudes (OMC) are the easiest to convert shaft length. Others may be more difficult. It is always easier (with regards to kit availability) to convert a short shaft to a long rather than a long to a short.

How big of a motor do you need for an inflatable dinghi?

On most inflatable dinghies and Newport Vessels inflatable boats, this will measure to be between the range of 15-17”. This measurement dictates that your boat requires a “short” shaft gas outboard motor. If the measurement is 20-22”, you will need to consider a “long” shaft motor.