mstate2
25.05.2021 17:56:11
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Re: how to rev engine in neutral. here
It depends on the type of control and I'm not an expert on OB's. but there should be a button, like maybe in the center of the control handle that you push in an move the throttle forward. some of the handles you pull out on and then push forward. some of them have a separate lever that you lift up on at the rear of the control just to give throttle in neutral. they're are many different types and I can't tell you which one you have based on the engine model. someone probably can. just not me. more
Your engine is a model number H0908F91C here
If you look under Remote Control, you can see if this is the remote you have. here
Revving your car engine is one of the coolest things to do, especially if you have auto-sport leanings. This article digs deeper into the whole revving concept, looking at what it is, its benefits, and how to rev a vehicle engine.
Follow the guidelines for both the parked and driving modes and for automatic and manual transmissions to pull it safely.
Revving is not only a thing of cars, as you may notice motorcycles, especially the sports performance ones doing the rev before they take off. It is more of a cosmetic thing, but you may do it to improve the oil flow in your car for a smooth driving experience.
When driving, you can rev your engine by pressing the brake and then placing the gear shift to neutral. Then steadily step on the accelerator and watch the needle go up a higher limit on the tachometer dial. This is for automatic cars.
On how to rev match manual cars, you focus on bringing the engine speed to that of the transmission, resulting in a smooth transition to the preferred gear. You press the clutch and step on the gas pedal to rev up the vehicle. [links]
For anyone interested in how to rev an engine, you need first to know the purpose behind this action. The good thing is that this piece will cover everything you need to know about revving an engine and how to be a pro.
The red line on the tachometer indicates going overboard when accelerating your engine speed. When you hit the rev limiter, you are going past the acceptable revolution limit; hence, you can cause engine damage.
Rev matching is acceptable as you adjust the engine speed to be on the same page with the transmission rate. It is suitable for the engine as it strains less. Get lessons on how to rev match to pull it off correctly.
6. Suboptimal speeds
There is usually a speed I call the “happy speed,” where a motor is operating at peak efficiency, which will prolong its life and burn less fuel. Owners have a couple of ways to determine their boat’s best speed. I use the sound of the engine to assist me. In its sweet spot, an engine seems to quiet down and vibrate less. If the boat has a fuel flow monitor, set it to read in miles per gallon, which will measure when the engine has reached the happy trim/rpm balance. But don’t go by this alone, because slower speeds might show better fuel economy but will require the motor to be run longer, which will age it more. Find a moderate cruise that sounds like the engine is loafing along and adjust the trim until the mpg measurement is maxed. [links]
4. Slow planing
Easing a boat on plane slowly is far worse for an engine than jamming the throttle quickly. During acceleration an engine is under its greatest strain, so drivers should minimize that time. In addition to applying the throttle quickly, make sure the outdrive or outboard is trimmed all the way in and the trim tabs (if present) are engaged. Doing so will improve fuel economy. here
It can get even worse. If an impeller fails and pieces of the vanes break off, they can cause serious engine damage when they get lodged in the cooling jacket and block water flow.
1. Dry starts
Most boaters are guilty of accidentally starting their engine with the prop high and dry, but I’ve seen boaters at the ramp give their engine a quick bump of the starter switch just to make sure their battery is strong enough. This is a huge no-no. According to David Meeler, Yamaha’s product design manager, “You only have about 15 seconds of cumulative dry running time before your impeller starts to fail due to excessive friction. That means if you run your outboard dry for three seconds five times, it will likely fail.”
5. Improper trim
Another way to prematurely age a motor is by not trimming it properly. With the trim set too far down, the bow of the boat plows and creates load on the engine — like a car driving up a steep hill. Reduce the strain on a motor by trimming it up until the hull breaks free, which should cause the boat to suddenly go faster. With the trim up too far, however, the boat will lose speed and cause the engine work harder than it needs to. here
There are two levers controlling the shift/throttle functions. But there is a button on the twin control you can push thereby turning the twin engine control into a single engine control running both engines as one. When both engines are in neutral, push that button and you will hear a chirp. This indicates the system is ready to operate both engines as one. Simply push the starboard lever back which moves it out of the way. Then the port engine lever, the one closest to the driver, will shift and throttle both engine at the same time. This is a particularly nice feature for the novice driver who would rather not have to use both levers. This feature is an option so you will need to check with your dealer to see if your boat has this or not.
Top end performance is a result of horsepower. With a total of 600hp vs 430hp, the boat is going to go faster with more horsepower. So, the total fuel burn at WOT (Wide Open Throttle) is going to be more with the twin. Hence, more speed.
Volvo Twin Control and Joystick more