If I move battery to the center console from the transom, will it compensate for increased engine weight on the transom?
ASIDE: My 1989 Montauk [ALWAYS MENTION THE TWO DIGIT OR THREE DIGIT LENGTH DESIGNATOR WHEN DESCRIBING A PARTICULAR BOSTON WHALER MODEL] has a Johnson 110-HP engine that is said to a dry weigh of 300-lbs. A Mercury 90-HP FOURSTROKE engine has a dry weight of 359-lbs.
Compensating for Added Engine Weight
Re: Compensating for Added Engine Weight
Moving the battery forward will not change the weight. It can change the center of gravity.
Butch
Re: Compensating for Added Engine Weight
Q1: does [an increase in the engine weight of] 60- to 70-lbs make much difference when considering a repower?
I know this has been discussed here for years but seems like every year the modern engines get lighter. I am asking:
Q2: does [an increase in engine weight by 70-lbs] really matter?
I know this has been discussed here for years but seems like every year the modern engines get lighter. I am asking:
Q2: does [an increase in engine weight by 70-lbs] really matter?
Re: Weight 4 stroke v. 2 stroke
You are correct. Moving the battery to the center console (cut the shelf so it rests on the deck) will ofset the added weight in the stern.
The boat can handle the added weight.
The boat can handle the added weight.
1992 Outrage 17
2019 E-TEC 90
2018 LoadRite 18280096VT
Member since 2003
2019 E-TEC 90
2018 LoadRite 18280096VT
Member since 2003
Re: Compensating for Added Engine Weight
Moving weight to amidships will affect the static and dynamic trim on the boat. The increased engine weight remains as a negative influence on performance. If you want to compensate for increased engine weight, you must remove weight elsewhere in the boat.BassettBW wrote:If I move battery to the center console from the transom, will it compensate for increased engine weight on the transom?
All weight added affects performance.
You are welcome to talk yourself into believing that you can add weight without any effect on the boat performance.
The effect adding of 70-lbs depends on the total boat weight. If a boat already weighs 7,000-lbs, then an increase of 70-lbs will likely not be noticed. If a boat weighs 700-lbs, adding 70-lbs will be noticeable.BassettBW wrote:Q2: does [an increase in engine weight by 70-lbs] really matter?
You can also consider that 70-lbs is about 12-gallons of gasoline fuel. If the fuel tank volume capacity is 12-gallons or more, the boat weight would tend to vary by about 70-lbs as the fuel in the fuel tank was consumed by the engine.