Just wonderin here

I know some of you guys have manual trans trucks and was wondering how many of you actually just go by RPMS and shift without the clutch. I have an uncle who is a truck driver who drove my truck with me in it and was clutch less shifting the entire time, surprisingly it was real smooth shifting.. this leads me to some questions

Is the nv4500 a synchronized tranny? I know that some big rigs have synchronized transmissions where the clutch is only used to go forward to take off and in reverse.

I have never really done tach shifting as i call it on anything ive driven that is a manual. (that i can recall at the moment) Is it harmful for the transmission?

finally, what does tach shfiting wear out or affect in a transmission? does it really prolong the clutch life?

i cannot see myself further bombing the truck and just tach shifting it the whole time just to save a clutch, it dont seem right, seems to me that somethin else will go KAPUT if i would happen to do that. I just need advice and input from you guys to better educate myself about this sorta thing...

Thank you for reading my post, and thank you again if you take the time to respond!

Respectfully

Rick

 

Thats how I shift mine, no clutch. Its more feel then anything. I've noticed each gear is different then the next. I've notice until the fluid gets warm, it's more difficult to get the gears to mesh correctly. As far as damaging the gears? I don't really see how unless your grinding them. Like I said, it's more feel to me then anything. If you had to go by RPMs then I would say somewhere between 1800-2400, but you have a 12v. Also what I do is if it wont go into gear I just tap the GO pedal a little bit to get the RPMs up to help slide her into gear. Once you get the feel for it, then there is the downshifting without a clutch, thats when you get real GOOD at it. Then you really feel like a truck driver.

Tye

 

our trannies are synchronized, and not using the clutch will accelerate wear on the synchros... if you're good at matching revs, it won't wear as bad as if you aren't good, but it's still going to accelerate the wear vs. using the clutch.

 

depends on the weight of the clutch assembly as to whether the synchros will wear faster or not by using the clutch or not. If you're slinging a heavy 13"er or a DD, then the input is still spinning fairly fast when you push in the clutch and change gears, unless you purposefully wait long enough. After driving mine for a while and being an ex OTR driver, I can safely say that the feel of the trans is the same clutch or not...if you do it right. You shift in smooth movements to nuetral then into the next gear and it'll slip right in, just like peddling the clutch. A little bump here or there on the loud pedal smooths things out even more, every trans is a little different there. I don't think shift RPM plays too big a role, but you're not gonna change gears all in one motion no matter how you do it, unless you're shifting too soon anyway. Now going down is a diffferent story, though the NV4500 is a fully synchro'ed unit, you still have to shift it like it was a road ranger.....slip it out of gear, bump the rpm's to get the split right, then into the lower gear. Same thing, it will just slide in. Just remember, any time you put pressure on the stick, you're pushing on synchros. The more pressure you apply, the more the synchros are being stressed.

 

that's the bottom line... very good point