SteveO

I am new to this twin engine thing and have found that when trimming the drives with the button on the throttles I have one drive that moves slower than the other. I have to reach down and correct or catch the one side up using the rocker switch. Is this normal?

epeek

I had a checkmate 281 Maxxum & both drives moved almost
perfect. One was just a touch slower. I now have a 32 Fountain
and they dont even come close. I use my single switch to
trim off,then touch it up with the rocker switch.

SteveO

Thanks epeek! I was told that some trim pumps are faster than others and this is normal, I just thought it seemed kind of strange, if you are going to have a button to move both I would have thought there would be some kind of "equalizer" in there to sync the two together. I'll learn to live with it!

macvtt

It seems to be normal that one pump is slower then the other. Some guys use the throttles with to buttons:
1 moves both drives, while 2 moves only one drive.
Example: start trimmed in, come up on plane, start to trim out, get trimmed out and port drive is slower, tap 2nd button and its all even. This is easier than pulling your hand off the throttle to even things up. I still think if the pumps where worth a crap this would not be needed, however it seems to be the standard.......for now!!

mopower

My Formula's are different speeds too.
I do like macvtt , start trimmed in and as I get on plane bring them up(almost together). Then do a "touch up" so they match

SteveO

Thanks for the replies. I like the 2 buttons on the throttle idea

32storm

The odds of (2)hydraulic pumps working in perfect sync are very slim. Touch-up on a drive is nothing out of the ordinary. Same for tabs.

Uncle Toys

Always been normal for me. Anyone every noticed if the level of fluid in the reservoirs makes a difference?

Kentz

Mine have been off since day one. Just a few milla-seconds. About the difference in distance from the battery

mcollinstn

There's a pretty expensive little box that will sync the pumps. Uses an ammeter in the box to count the "pulses" of the electric motors on the pumps. Drops voltage to the fast pump to keep them running the same.

If the motors run the same, then they will trim the same as long as they use the same kind of fluid and there is no air in the system.

I've also heard of guys using some kind of resistor between the power lead and the ground of the fast pump.