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trim tabs...1990 pacifica 199
- Thread starter lmurphy
- Start date
Lisa,
I am Thomas and I work for Bennett Marine in the Client Services department.
Here is a brief outline for using Trim Tabs, which may shed some light on the operation of them. If you will provide me with your mailing address (trimtabs@earthlink.net) I will be delighted to send you a Bennett Marine owner’s manual, which will provide this information for your records. After you read over this, you may have a few more questions, so feel free to contact me.
Sincerely,
MJ Thomas
BENNETT MARINE, Inc.
Client Services
www.bennetttrimtabs.com
One Step at a Time
The key to obtaining optimal results from trim tabs is to operate them in short “bursts” and let the boat react before making another adjustment. The amount of time between corrections is influenced by the size of the trim tabs and the boat’s speed. This will help avoid overtrimming or ending up with one tab too far down when correcting lateral trim. You will quickly become acquainted with a boat’s particular traits.
Take Off
Properly sized trim tabs can significantly reduce the time needed to get up on plane. They also allow a boat to keep its bow down and stay on plane at lower speeds.
As the throttle is advanced the stern of the boat begins to squat, lifting the bow. As the boat accelerates, push the bow down position of the helm control in short bursts. The boat reacts by the stern lifting, the bow coming down, speed increasing, and reduced engine laboring. If you over do it and deflect the tabs too far the boat will end up over trimmed. When over trimmed, the steering becomes “over sensitive” and wants to pull off course to port or starboard. If this occurs, operate the control "bow up" until the desired attitude is established.
Getting the Most from Power Trim
Adjust the trim tabs to achieve the desired running attitude. Then use the power trim to position the propeller thrust parallel to the water flow. If necessary, re-adjust the trim tabs to fine-tune the attitude. By observing the boat’s speed and engine RPMs the best combination of trim tabs and power trim will be apparent. Trim tab angle indicators and a power trim angle indicator are particularly useful in duplicating effective settings.
Trimming to Sea Conditions
When running into a head sea you want to trim the bow down so the sharp forward sections of the boat do their work cleaving the waves. This provides the most comfortable ride and minimizes stress on the boat (and passengers). In a following sea the tabs should be fully retracted for maximum steering response.
Correction of a List
Using the trim tab controls you may operate one trim tab independently and correct for a list. This list may be caused by uneven weight distribution, prop torque or wind,
You may find it easier to correct the boat’s fore and aft attitude before you correct the athwartship trim.
Correction of Porpoising
Operate the tabs in very short bursts of about half a second. Continue until porpoising subsides. The objective is to have only a very slight amount of tab deflection, just the amount needed to cure the up and down motion of the bow.
I am Thomas and I work for Bennett Marine in the Client Services department.
Here is a brief outline for using Trim Tabs, which may shed some light on the operation of them. If you will provide me with your mailing address (trimtabs@earthlink.net) I will be delighted to send you a Bennett Marine owner’s manual, which will provide this information for your records. After you read over this, you may have a few more questions, so feel free to contact me.
Sincerely,
MJ Thomas
BENNETT MARINE, Inc.
Client Services
www.bennetttrimtabs.com
One Step at a Time
The key to obtaining optimal results from trim tabs is to operate them in short “bursts” and let the boat react before making another adjustment. The amount of time between corrections is influenced by the size of the trim tabs and the boat’s speed. This will help avoid overtrimming or ending up with one tab too far down when correcting lateral trim. You will quickly become acquainted with a boat’s particular traits.
Take Off
Properly sized trim tabs can significantly reduce the time needed to get up on plane. They also allow a boat to keep its bow down and stay on plane at lower speeds.
As the throttle is advanced the stern of the boat begins to squat, lifting the bow. As the boat accelerates, push the bow down position of the helm control in short bursts. The boat reacts by the stern lifting, the bow coming down, speed increasing, and reduced engine laboring. If you over do it and deflect the tabs too far the boat will end up over trimmed. When over trimmed, the steering becomes “over sensitive” and wants to pull off course to port or starboard. If this occurs, operate the control "bow up" until the desired attitude is established.
Getting the Most from Power Trim
Adjust the trim tabs to achieve the desired running attitude. Then use the power trim to position the propeller thrust parallel to the water flow. If necessary, re-adjust the trim tabs to fine-tune the attitude. By observing the boat’s speed and engine RPMs the best combination of trim tabs and power trim will be apparent. Trim tab angle indicators and a power trim angle indicator are particularly useful in duplicating effective settings.
Trimming to Sea Conditions
When running into a head sea you want to trim the bow down so the sharp forward sections of the boat do their work cleaving the waves. This provides the most comfortable ride and minimizes stress on the boat (and passengers). In a following sea the tabs should be fully retracted for maximum steering response.
Correction of a List
Using the trim tab controls you may operate one trim tab independently and correct for a list. This list may be caused by uneven weight distribution, prop torque or wind,
You may find it easier to correct the boat’s fore and aft attitude before you correct the athwartship trim.
Correction of Porpoising
Operate the tabs in very short bursts of about half a second. Continue until porpoising subsides. The objective is to have only a very slight amount of tab deflection, just the amount needed to cure the up and down motion of the bow.
BUKKAKIBLASTER
Member
Nice,that should help many people.I have friends that were afraid to use tabs,until they see the benefits! Thanks
seeing clearly
Member
Good stuff!Is there a way to get trim tab angle indicators for my 89vision.I see them in all the new boats.I've got the tabs and it would be nice to have something to go by, besides the seat of my pants.Thanks.
Great stuff, thanks for shareing
1975 Checkmate Tri-mate 2, 2.4 200+
1975 Checkmate Tri-mate 2, 2.4 200+
seeing clearly,
Well, what brand of trim tabs do you currently have installed on your '89 Vision? Our Trimdicators system uses special Sensor Coils that are built into the Upper Hinges of our actuators, so if you currently have Bennett trim tabs the retrofit is fairly easy. If not, then you would need to replace your trim tab actuators with a set of ours and we even offer a Trimdicator set that includes actuators just for this installation! Please get back to me with your brand and I will let you know the correct part numbers to order from your local marine dealers, catalog &/or Internet retail!
I look forward to your reply.
Sincerely,
MJ Thomas
Bennett Marine, Inc.
Client Services
www.bennetttrimtabs.com
Well, what brand of trim tabs do you currently have installed on your '89 Vision? Our Trimdicators system uses special Sensor Coils that are built into the Upper Hinges of our actuators, so if you currently have Bennett trim tabs the retrofit is fairly easy. If not, then you would need to replace your trim tab actuators with a set of ours and we even offer a Trimdicator set that includes actuators just for this installation! Please get back to me with your brand and I will let you know the correct part numbers to order from your local marine dealers, catalog &/or Internet retail!
I look forward to your reply.
Sincerely,
MJ Thomas
Bennett Marine, Inc.
Client Services
www.bennetttrimtabs.com
seeing clearly
Member
Sounds good I'll send you the info on your site.I appreciate your help.