Throttle Positioning
 

What would cause the need to have one throttle stick slightly (less than 1/4") more forward than the other at any speed in order to keep the RPM's equal between the pair of 496HO's in my 30 Outlaw???? Is it adjustable?

Thanks.

They are all like that because of the prop torque and the way stuff handles with load etc. Don't believe there is anyway to adjust it..

Yes there is an adjustment either at the engine end or the throttle end. As the cables age, they stretch so figure out which one needs to be moved a little and tighten up the play in the cable.

Makes sense and being that I am not much the mechanic, will have to have that looked at. Thanks!

Words of a very wise man.

The number one reason is that your props are not matched!

I have never had to adjust the sticks on my boat once I got a set up props labbed and perfectly matched. Stock props out of a mold are not perfect adn no two molds are identical. I have seen as much as 300 RPm difference in engine speeds with stock props requiring the throttles to be at different positions to have both engines running at the same RPM.

If you have stock out of the box props have them matched up by a good prop shop like BBlades before you start adjusting the throttle cables. If not you could loose top end RPM on one engine after the adjustment.

Good luck

Dock,

Have you ever noticed that a well matched engine/prop setup on a twin engine boat tends to gain speed after the first 1-2 miles, and a mis-matched setup tends to hit a "brick wall" at wide open?

XT:rolleyes:

Yes Sir

There is nothing like a matched set of props on a boat. I compare it to an unbalanced set of blades on a mower.

You can tell a difference and it is smooth and sweet.

There you go again GRASS on your mind

So you can balance the 9 blades on the 16' cut Jacobsen? How about on the 10' Toro? :drink:

You don't know how funny that statement is right now!

I just had 49 loads of dirt brought in last week on some property we bought to build on and we planted a lot of new grass. I have been running the sprinklers late into the night for the last five days and I went out at about midnight last night to turn them off. I heard what sounded like a party coming from the house next door and there were five people out in the front yard smoking dope and the wind had carried it over toward me and the smell hit me in the face!

Grass & Grass & more Grass!

Sorry that this thread has been highjacked!

Back to balancing props.

No problem Big Boy!:lolhit:

How is that golf course of yours looking?

have bblades do your mower blades:drink:

Remember the last scenes of Caddyshack?

Really, the Reverend Tom has a 16', 90hp Detroit Diesel, Jacobsen to mow his yard with & he uses a 10' Toro to do the "trimming".
I used the Toro at the house in Wichita once. Took longer to unload it from the trailer than to actually mow the yard. It was awesome.