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-   General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)
-   -   Trim Tab speed (https://www.offshoreonly.com/forums/general-boating-discussion/359821-trim-tab-speed.html)

Outcast 03-28-2019 10:07 PM
Trim Tab speed
 
Hey folks,

Do you guys have any tips / mods I can do to speed up some hydraulic trim tabs ? They're a single ram tabs running on a single pump

Thank you !

Craney 03-29-2019 06:28 AM
You can go with a thinner oil like a straight 20 or 30 weight oil.

Sydwayz 03-29-2019 09:04 AM
Are they Bennett Trim Tabs or Instatrim?
If I remember corrctly, they both require plain ATF or Power Steering fluid.

Call the manufacturer. I know for a fact that the customer service at Bennett sets the bar for marine companies.

JBmarine 03-29-2019 01:45 PM
On raceboats we'll run ATF in K-Planes so they'll react quicker than with the prescrided 10W30 oil (with added bonus of being easier to spot leaks).

Wildman_grafix 03-29-2019 02:16 PM
Originally Posted by JBmarine (Post 4679377)
On raceboats we'll run ATF in K-Planes so they'll react quicker than with the prescrided 10W30 oil (with added bonus of being easier to spot leaks).
That is what is in mine (K Planes),,,,,, because my buddy that helped rig it also does race boats.

TYPHOON 03-29-2019 02:49 PM
Originally Posted by Wildman_grafix (Post 4679380)
That is what is in mine (K Planes),,,,,, because my buddy that helped rig it also does race boats.
And I like my drive and tabs to move slower so I can dial it in better. Helps me find the sweet spot. To each is its own.

Revelocity 03-29-2019 03:57 PM
If there isn't one already, install a power relay(s) near the pump motor to avoid the voltage drop on the wire run from the switch.

RaggedEdge 03-29-2019 04:26 PM
Originally Posted by TYPHOON (Post 4679384)
And I like my drive and tabs to move slower so I can dial it in better. Helps me find the sweet spot. To each is its own.
With you on this. Back in the day with the Velocity I came up with a system of using Holley carb jets in the hydraulic lines to slow down the tab action so that you could get things just where you wanted them. One of Steve's bastardly 32's, one mofo of a handful at the century mark.

Ryan00TJ 03-29-2019 04:34 PM
Originally Posted by JBmarine (Post 4679377)
On raceboats we'll run ATF in K-Planes so they'll react quicker than with the prescrided 10W30 oil (with added bonus of being easier to spot leaks).
Makes sense. ATF is equivalent viscosity to a 10w oil. My Dana HP1000 tabs call for 30w oil. One tab hose had a pinhole and milkshaked the oil. Flushed out with bulk 40w oil. Other tab with 30w oil was noticeably faster responding.

Wildman_grafix 03-29-2019 06:57 PM
Originally Posted by TYPHOON (Post 4679384)
And I like my drive and tabs to move slower so I can dial it in better. Helps me find the sweet spot. To each is its own.
Well for me I am just a pleasure boater so I thought it was kind of funny. It’s not like I noticed they were to slow before. I have never raced a boat so don’t know what is better there.


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