shifting gears w/o the cluch

[poison_ivey]

is it fesably possible to shift gears w/o the clutch (and not destroy the gears)? this is what i was thinking:

i was thinking it's possible to shift the car into netural w/o clutch and destroying the gears. then at just the right rpm, the lever would pop into the next gear.
for example your doing 20 mph @ 5000 rpm. then you could put the car in netural w/o clutch. then when car reach, lets say, 2000 rpm, it would pop into 2nd w/o effort (b/c of syncros).

possible? yes/no?

[rerun]

look at this way: back in the early 1900s clutchs didn't exsist.. yet manual trannys and engines did.. get the picture?

it will grind like hell and you REALLY have to force it in to gear, and you have might have to try it a few times to get teeth ingauged.

and, yes, this is hell on the tranny.

[WhiteCavaliac]

Buddy of mine did it to his 2.9L ranger. He swore it was ok for the tranny because it went in and out very notchy and barly scraping. Now he has to shift from 2nd to 4th cause 3rd gear will not stay in if you dont hold it there. It will just pop out and its a pretty loud pop.

[poison_ivey]

all manual tranny's come w/ syncros, so i was thinking that if you applied a little bit of pressure, it will pop into gear once the engine and transmition are at the proper rpm...
o well, atleast i know for sure that you can put the car in netural w/o the clutch....
thx for ans

[Madigon]

my stepfather shitfts his frontier w/o the cluth all the time. He's actually really good at it and it goes very smooth. The only thing is that he does really slow, and not at very high rpms. Pop into N, then gently into whatever gear. Slowlike.

Seriously.

[thunderbird muscle]

NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
real fine synchronizer

[SIKCRX]

Originally Posted by poison_ivey

all manual tranny's come w/ syncros, so i was thinking that if you applied a little bit of pressure, it will pop into gear once the engine and transmition are at the proper rpm...
o well, atleast i know for sure that you can put the car in netural w/o the clutch....
thx for ans

in the early 20th centurty strait drives didnt come with syncros

[stangfreak7]

What you are refering to is what i've always called gear jamming. had to do it many times off four wheeling in my 83' cj-7 when the clutch rod gets streached and shifted beyond its limit and falls out. now you can shift without scrapping the gears when u do this, but you have to find the right rpms to do so. when you shift at the right rpms, the pressure will equal out and allow you to shift to the gear u wish to do so. now as far as being hard on the tranny, i dont really think so but i wouldnt want to do this everyday driving back and forth to work etc. i would use it if you need to, but thats just me. ive never tried it in a t-5 in a mustang, but i personally dont trust my t-5 enough to do this alot. from what i have been told, handling stress isnt there strong point.

[MethodMan420]

Yes it can be done my buddy had a early 80's S-10 we were cruising around and we heard a pop ... The clutch cable broke ... we drove through the city (timing every light and made it home 25 miles away with no clutch).From what i gathered its all about timing the gears at the right rpm and gently forcing it. i have done it with most every 5 speed ive driven since and seems to work.

Although im sure its not good for your tranny it sure is fun to do .

[okie-chevy-man]

Originally Posted by rerun

look at this way: back in the early 1900s clutchs didn't exsist.. yet manual trannys and engines did.. get the picture?

it will grind like hell and you REALLY have to force it in to gear, and you have might have to try it a few times to get teeth ingauged.

and, yes, this is hell on the tranny.

do you know what you are talking about? have you ever done this or even drove a standard? yes it can be done and no it is not bad on the tranny AS LONG AS it is done at the appropriate RPM when the synchronizers are lined up. Alot of big trucks (dump trucks, concrete trucks, big rigs) do ot have clutches and you have to shift like this all the time.

[Hypsi87]

Originally Posted by okie-chevy-man

do you know what you are talking about? have you ever done this or even drove a standard? yes it can be done and no it is not bad on the tranny AS LONG AS it is done at the appropriate RPM when the synchronizers are lined up. Alot of big trucks (dump trucks, concrete trucks, big rigs) do ot have clutches and you have to shift like this all the time.

I guess not too many people have driven semis before. Most people that drive bigger diesels don't use the clutch unless you have to. Saves the clutch. All you have to do is to is match your gear cluster RPM to the right engine RPM. Most heavy duty transmissions do not have syncros. Also heavy duty pure race tranmissions don't have syncros. Sycros are heavy and take too much power to turn.

[ModMech]

For the average driver, shifting w/o using the clutch will result is exactly one thing: Synchro destruction.

With non-synchromesh transmissions (HD trucks), there is less of a problem, but whith a synchromesh trans how do you KNOW if the rpms were matched or not? You CAN'T! The job of the synchro is to "take up" small differences in speed between the mainshaft and the gear. If you are off, but not bu a lot, you'll never know it. You WILL however be placing very excesive wear on the synchros.

How do I know this? I work in a truck shop, specializing is electronics, transmissions, and brakes. I work on everything from cars to 80,000# rigs. You'd be shocked to find out how quickly you can destroy a synchro, and how badly it will shift w/o it.

[Los]

a 5k shift into another gear without the clutch is asking for disaster. The clutch is there for a reason. Use it.

But if you're a hardcore drag racer, you should be able to powershift the 3550 with ease.

[Mustangman25]

My grandpa can do this in a manual car-he calls it 'speed shifting.' He says that you have to get a good feel for the engine speed and tranny speed, match them up, and then you can shift w/o clutch. I've never seen him do it, but I've heard his friends talk about it.