How do you measure a long shaft outboard motor?

How do I know if my outboard is 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.

Can you put a short shaft motor on a long shaft boat?

For boat owners with a short-shaft outboard on a long-shaft transom, Vance Manufacturing has developed a solution for you. … They act in place of a small-engine shaft extension, mitigating the issues that arise when trying to mount to a transom designed for long-shaft engines.

What happens if your outboard shaft is too long?

If you went too long it would still work but it may lack in performance. You will also risk hitting bottom or submerge objects more frequently such as rocks or logs. If you go too short your more than likely going to cavitate and loose power.

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Does my boat need a short shaft or long shaft motor?

If your boat has a Transom Height 15″-16″ you will need short shaft and if it is 20″-21″ you will require long shaft engine. … Auxiliary engines for yachts usually require a long shaft engine so as to make sure the propeller remains well submerged when the boat is in a seaway.

How do you increase transom height?

One non-invasive way of raising the transom on an aluminum boat is to create a “lift” — a bracket that fits over the transom — to increase the motor’s height. The completed bracket forms a channel, and the top of the channel holds the top of the outboard bracket a few inches above the transom of the boat.

How long should a kicker motor shaft be?

A short shaft (standard) is 15″, a long shaft is 20″( most sail boats). Long shaft would sit 28″ from the center of the prop to to where the motor cleats sits on the transom and the short shaft is at 22″. If you have a crazy high transom your gonna need a motor mount for the kicker.

Can you change the shaft length on an outboard motor?

If you change to a short drive shaft, you’ll need to change the other shaft that runs through the exhaust tunnel, as it will be too long as well — you’ll need to install a new, shorter shift rod.

How much length does an outboard add?

As I mentioned above, the outboard engine will add around 2-3′ to the overall length of the boat.

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

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 happens if you run a long shaft motor on a short transom?

You will drag your motor on the ground. You will have terrible performance, may not even get on plane depending on size of boat. Probably will lug due to hanging so low and could burn a hole through a piston. You really have to raise that engine up.

Can you put a short shaft on a 20 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.