Take a look at some blow-up charts of Harley gears/shafts and then those on cars/trucks,and even MotoX bikes.

The largest factor is what speeds up the gear so it will mesh.
On MotoX bikes you have thrust washers, obviously they do a great job in speeding the gear/shaft up.

On cars/trucks some gearsmesh at speed without the clutch, but not all.
If you look at the splines on those shafts you'll find idlers that help mesh the landing gears.

 

Thats whatI used to drag race on, but if you screw up, it would sometimes blow the right rear of the case out, don't ask?, LOL when street racing, in my youth I used the kill button instead of the clutch..if you was good, you could adjust your clutch pull so that it engaged about 1/2 inch into the pull, thus using only a couple of fingers, pretty quick that way also..this was all back in the 60s, way before air shifters and all the modern crap, that was when it was the rider half as much as the machine, now days its just, get on, hangon, the bike does it rest?? go back to pits and read the computer..not saying that isn't good, but being old and old fashioned I like the old ways, sort of personal and up front.

street racer 1960s style

 

...Hey Bear, I raced a 1970 XLCH, bracket class NHRA, during the 70's, man...those days were fun.
(Remember those oil catches NHRA made us put on the front of the engines? HeHe, 2 funny now...)

 

Do it all the time 3-5........if ya know what your doing its easier than pulling the clutch

 

I usually just give the clutch a little bit of pull to release pressure on the gear teeth so they will slide. I don't hear or sense anything getting chipped in the process.

 

Of course it cuts down wear on the clutch! your not useing it!!!! Sheesh!

Personally, and im no rocket scientist but im sure a few of them have had some input on this over the years. Theres probably a reason that all these vehicles have clutches on them.....Dontchatink?

 

I have with most of my vehicles. With my dirt bikes, I don't think I ever used it except to start and stop. And when I was driving Semi's same thing. It's just a matter of shifting when there is no load on the drivetrain.

 

yeah you are right.............................. it's to take off from a dead stop without kill'n the motor.[8D]

 

your so right, but then its like living in the fast lane, or riding 20,000 miles a year?? Can I really do that? but then there are those that do neither--Dontchathink??

[IMG]local://upfiles/3092/CFDFE4D800AF4670BDA5BF595B28D6C6.jpg[/IMG]

 

Lol I do both, but I still use my clutch, I know you can match engine rpms to speed to get the gears to mesh and I admit I do it in my jeep when I'm lazy, but what happens when you dont get teh speeds jsut right??? GRRIIIIINNNDDDDD!! you cant tell me that is good for anything, lol.

And you spelled dontchatink wrong, theres no H its "tink" comon man where have you been???