Ok, so what's the deal with the fact that you can shift into 4th without engaging your clutch?! I saw it in a movie once, so I was like "What the hell, why not... the worst that'll happen is the synchro screams at me" so I was puttin' along I let go of the gas and put it into 4th without hitting the clutch MUCH to my surprise. Is that just the way the tranny is designed? Sorry if I look completely off the wall for getting THAT excited about 4th gear haha
4th gear
- Thread starter Burfy
- Start date
AMY
Official MSC Trader
I think it has probably been down to luck, especially if you are shifting from third to fourth. The micra uses synchro's like most other cars, but with any car if you can have the two cogs spinning at the same speed you can engage gear without using the clutch. It should be possible to engage any gear once you are moving without the clutch by rev matching.
AMY
Official MSC Trader
A lot of truckers do this to avoid stressing the clutch, the clutch is only used for pulling away and stopping. A lot of rally boxes are non synchro so you would have no choice but to rev match. With sequential boxes you can generally change gear without the clutch without too much trouble. I reckon there is going to be a lot of you guys trying this now! lol. It's really tricky to get it right consistantly, I can do it if I take my time holding the revs steady.
I've heard a bunch of people talking about shifting without using the clutch (except first gear haha) i learned that if you don't have syncho's you had to "double-clutch" which is basically what everyone is talking about here with matching the revs... btw, if i hear 3 people exploded their gearboxes while trying to shift without clutching, it WASN'T my fault 
i've been too much of a ##### to try 2nd gear...i've gotten 3rd ONCE, and i tried it again and it screamed at me, so i just stuck with 4th haha.
i've been too much of a ##### to try 2nd gear...i've gotten 3rd ONCE, and i tried it again and it screamed at me, so i just stuck with 4th haha."When an experimenting driver tries to "match the revs" on a synchronized transmission and force it into gear without using the clutch, it is actually the synchronizer that makes up for any discrepancy in RPM, deceiving the driver into an exaggerated sense of how much human skill was involved."
yep, that would be me... lol...i figured out how to change gears without clutching :blush: gearing up is slow if you're not good at it, but gearing down is actually easier, and will actually save your clutch a bit, but i find it a waste of gas lol... but anyways, SYNCHROMESH!!! yep, that's the term for it... if your tranny already has synchros in it, you'll never truly be able to synchromesh, but it is a rather good feeling to move the gear into place without touching the clutch
(quotes from http://en.wikipedia.org/wiki/Manual_transmission#Synchronized_transmission)
yep, that would be me... lol...i figured out how to change gears without clutching :blush: gearing up is slow if you're not good at it, but gearing down is actually easier, and will actually save your clutch a bit, but i find it a waste of gas lol... but anyways, SYNCHROMESH!!! yep, that's the term for it... if your tranny already has synchros in it, you'll never truly be able to synchromesh, but it is a rather good feeling to move the gear into place without touching the clutch
(quotes from http://en.wikipedia.org/wiki/Manual_transmission#Synchronized_transmission)
59 bhp is more than enough
Deactivated Account
you can change gear without using the clutch without double clutching in any gear, like everyone says you have to match the revs of the engine with that of the gearbox and just jam it in. It isnt very healthy for the gearbox just because they arnt designed to do it.
the gearbox's used in race cars (or some anyway) have what is known as straight cut gears with dog engagement. This is where the gears are straight and not slanted and the edges are pointed so you can jam them into gear without using the clutch. This is part of the reason theyre straight cut as it would be difficult doing it with slant cut gears, also the straight cuts in the gears make it stronger (even though theyre built using stronger materials). It also what gives it the whining sound you hear in race cars, the reverse gears on most cars are straight cut and thats why you get that whining whilst your reversing.
the gearbox's used in race cars (or some anyway) have what is known as straight cut gears with dog engagement. This is where the gears are straight and not slanted and the edges are pointed so you can jam them into gear without using the clutch. This is part of the reason theyre straight cut as it would be difficult doing it with slant cut gears, also the straight cuts in the gears make it stronger (even though theyre built using stronger materials). It also what gives it the whining sound you hear in race cars, the reverse gears on most cars are straight cut and thats why you get that whining whilst your reversing.
gearing down is MUCH easier... but imo it's a big waste of gas lol... don't try it if you don't feel comfortable... but since mine's 17 years old, and I myself am 17 years old, i like to be a little wreckless at times :laugh: and i'm always up for a new challenge... my newest thing to do is drift on snow/ice like roads... it was only a phase and lasted 5 hours straight haha
Alienfish360
Awesome Dawson
race cars still use a clutch to change gear, even though they have no synchromesh, they just use double clutching to match the revs.
misterBaz
Ex. Club Member
Don't mix basic rev matching with the more complicated double clutching. Double clutching is being in one gear pressing the clutch to take it out of gear, releasing the clutch when the box is in nuetral, revving the engine to the required revs, then pressing the clutch again, and THEN putting it into gear. I have to do this on my old land rovers as they are not synchronised in first and second gear. You don't need to do it at all on a car with a synchro. The one thing that you can do is basic rev-matching, (press the clutch change gear, rev the engine to required revs, release clutch) this doesn't make it any faster, but it does pro-long the life of your synchro, and leads to smoother gear changes.
Once you are used to it it becomes second nature, it's good to do as I feel that it tunes you in to your engine more, especially if you don't have a rev counter (the landrovers don't even have a working speedo lol), as you learn to listen to what your engine is telling you.
Once you are used to it it becomes second nature, it's good to do as I feel that it tunes you in to your engine more, especially if you don't have a rev counter (the landrovers don't even have a working speedo lol), as you learn to listen to what your engine is telling you.
That would be the synchronizers working
I've made it (from a rolling start) from gear 1 to gear 5, and then all the way back to gear one with out using the clutch grr It wasn't the smoothest ride, but I can say I successfully did it lmao I didn't grind any gears fyi.. I must say, shifting up was MUCH easier than going back down
its easy to not use a clutch in a bike, when mine broke on my pit bike i still rode it :B It was just a little tricky setting off without 1, heeh. But without using a clutch you are alot faster, its the same with an auto box over a manual, theres less for the human to do so its quicker :B
Ryan.
Ryan.
I'd still take manual over auto.. When auto starts to malfunction you get worried for your bank account.. If manual malfunctions you know it's just the dumbass driving it Plus you can do a WHOLE lot more with manual: Burnouts, redline, safely slow yourself down with your tranny rather than locking your wheels, and of course, stall the car lol.. I think my fav is sticking it in first gear release the clutch and turn it over haha
Plus you can do a WHOLE lot more with manual: Burnouts, redline, safely slow yourself down with your tranny rather than locking your wheels, and of course, stall the car lol.. I think my fav is sticking it in first gear release the clutch and turn it over haha
