Is it possible to shift without using the clutch

At this point, the shifter should slip easily out of gear and into neutral. When the engine slows enough that its speed matches that required by the second-gear ratio and the vehicle speed, the shift lever will drop into the second-gear position.

If the engine speed drops too far, adjust it with the throttle as necessary [fig. Repeat to move up gears. When the engine speed matches the speed required for that gear, the lever will pop into position [fig. Otherwise, you have to use the other methods of starting listed here.

Come to think of it, maybe you should just call a tow truck. Even if it is a short period of time, there is just about no way you can hit this exact every time. If you feel that you are, you are more than likely fooling yourself. Any resistance during the shift is unneeded wear on the synchros.

If there are any others I haven't heard of them. With spur gears, and only once you are in motion, you can do a clutch-less shift relatively easy, especially if you match the correct RPM. This would do a bit of additional wear on the gearbox. It is up to you which you will wear out. With helical gears, it is also possible to do clutch-less shifts but again, only in motion. But, unlike spur gears, you will feel some resistance and hear noises.

All of which are pointing out the additional wear you are creating in the gearbox much more than with spur gears. If I were you I would not even think about doing that in this case, severe damage to your transmission may occur. Of course you can do that if you are in danger, but forget it in your daily driving. First of all, whether a gearbox has spur or helical gears has nothing to do with the actual shifting between gear ratios. In a constant mesh gearbox essentially every automotive manual transmission , the gears are always engaged and all spinning.

The difference between a racing transmission or motorcycle trans and a common road going manual is the way by which the gears are selected. A racing transmission uses dogs hence dogbox, or crashbox instead of synchronizers.

Look up a diagram if this is confusing. Basically, a dogbox allows instantaneous shifting without the clutch, but in a synchro box you have to put it in neutral, then match revs, then engage next gear. This will result in increased synchro wear. While you are somewhat correct most production cars only use helical gars for foward gears mostly because spur gears are loud and customers would complain..

But for any type of performance transmission used for racing or because you want them can have all spur gears.. And shifting without a clutch on spur gears is completely ok it's called bang shifting, basically yanking shifter into next gear without really lifting, most circle track cars do this. And because you are using it for some type of performance use of course you will need to be rebuilding it more often.

I don't see the double negative that Paulster 2 seems to read. That is a true statement. I don't think it could be any clearer. Some drivers, especially those driving large and heavy trucks, feel like they're saving time and shifting quicker if they float gears. Most of them are driving trucks that aren't theirs, so they have no stake in treating it kindly.

Terrible attitude, but that's the way it is these days. I'm old school, and I was taught to take care of that which is not mine simply because it's not mine..

They seem to forget that the big rig they're thrashing the gearbox in is a tool to get two jobs done; one, to move freight, and the other to make a living. If the truck goes down for a transmission failure, no freight gets moved and the driver with the bad habit gets no pay. Some drivers think clutches are for sissies.

This is twenty years and almost two million miles of hauling fresh produce across the country and another twenty years of working on man-rated space hardware specifically proof testing almost every part of the Space Shuttle Main Engines talking. I'm so glad I never learned how to float gears. If the shift is well-coordinated, that is, timed well, using the clutch will create a seamless, smooth gear change that can outperform any automatic transmission.

One has to listen to the feedback the truck is giving. It might take a little more effort than usual, but it will go into the gear. If you need to downshift the car, then you can follow the same process, but you need to slow the car down to a lower rate and move the shifter when the engine speed is around 1, to 2, RPM.

The tricky part is matching the engine speed to what it will be when shifting into the lower gear — much like how you have to do when heel-toe downshifting — so you may need to blip the throttle again before shifting into the lower gear to get the desired engine speed.