Outboard weight on a San Juan 21
- Thread starter Trick
- Start date
@Trick Check this out.
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San Juan 21Fleet 1 - Outboards
By Fleet 1: One of the more common questions for our sailboats is “How big (or small) of an outboard do I need?” There are three factors to consider with the San Juan 21, Horsepower, Weight, and Shaft Length. A 4 HP motor is plenty of power to get our boats to hull speed in all but the most
Great Article.@Trick Check this out.
San Juan 21Fleet 1 - Outboards
By Fleet 1: One of the more common questions for our sailboats is “How big (or small) of an outboard do I need?” There are three factors to consider with the San Juan 21, Horsepower, Weight, and Shaft Length. A 4 HP motor is plenty of power to get our boats to hull speed in all but the most
Thank you.
jssailem
SBO Weather and Forecasting Forum Jim & John
- Oct 22, 2014
- 22,818
With all things boat, there are compromises.
On the waters of lake Coeur D'Alene the 4hp light weight motor (2 stroke) will be more then enough power to get you away from the dock/launch ramp and out on the water sailing.
Should you move to the Columbia River to test your sailing/cruising skills, you might want the more powerful 6hp 4stroke. It has more weight but balances that out better torque (to help power through the wind and current) and then there is the fuel efficiency / reduced emissions.
Key considerations from the above link:
On the waters of lake Coeur D'Alene the 4hp light weight motor (2 stroke) will be more then enough power to get you away from the dock/launch ramp and out on the water sailing.
Should you move to the Columbia River to test your sailing/cruising skills, you might want the more powerful 6hp 4stroke. It has more weight but balances that out better torque (to help power through the wind and current) and then there is the fuel efficiency / reduced emissions.
Key considerations from the above link:
- Facing high winds can slow the boat down and here a larger motor will get the boat back up to hull speed.
- Larger motors will allow you to get to hull speed without going full throttle so they can be quieter and have less vibration.
Had a 54 lbs. 4 stroke 5 HP in one and the transom was able to handle the weight with some deflection. The stern squat was reasonable and the boat sailed well. Check the motor mount rating and reinforce the backing plate on the transom.