18 gears. WTF Chuck?

A,B,C are the ratio sets (I can't remember all the details... I know we've gone over them before on here... not all transmissions have all sets)

The torque ratings are the 16,18,20 etc.

 

I was nervous as hell when I took my driving test, I was told I had to double clutch. I don't know how to double clutch, I only learned how to float. I asked a few other drivers and they didn't know how either, so I just floated gears on my test. Passed with flying colors.

 

that's funny
FYI when driving and changing gears push in clutch and move gear-shift to neutrel, let clutch out, push in clutch and move gear-shift into next gear, then let clutch out. DONE dam I had to think about that, i just do it without a thought

 

Wouldn't you still have to use the rpms of the motor to get it right or is it still just about timing? Sometimes in the woods in rough terrain, I don't know if I would have time to do all that before the truck stops.

 

Its still about timing and matching rpm's it just decreases the strain on the gears . If you were to pull a few tranny's apart you can tell which ones were floated vs clutched by the wear patterns.

Truth is properly done floating is better for the trans, Most drivers can not float properly and when you miss floating the odds of causing severe damage are higher because you are still applying power against the load. The clutch removes the power from the load.

Personally I float most of the time, with the exception of when I'm pulling the trains in NV # 119,000 lbs then I double clutch.

 

well for you young drivers it doesn't make since. But the ol'timers remember when a 220 was a big horse. or the 350's i have driven a 262 with a 13spd main a 4spd browny and a 2spd rear end you do the math I have. I could pull right up there with a 400. why? I had a 50 rpm split. that is the main reason the 13's 15's 18's came out no horse power and heavy loads

 

well said

 

That was true about ten years ago, now they have changed the slide sleeves and the gear guys say they do not fully engage unless you use the clutch. Personally I use the clutch to take it out and no clutch to put it in gear and I was told that, I was doing it wrong. Just a thought!

 

Over 1 Million Km travelled not useing clutch and gearbox still going ????? it is good or bad????? this will never be resolved (2 clutch or not 2 clutch) LOL

 

Hoping that someone can help me out here on a question of the 13 vs 15 vs 18 speed.

As I understand it, a 13 speed is basically a 9 where you could split the top 4 and that an 18 is a 9 speed where everything but "low" could be split.

I thought, therefore, that a 15 was a 10 speed where you could split the top 5. Reading through your conversation to hear black_dog explain it:

So a 15 is not simply a 10 speed that can be split?

A 9 speed can be modified into a 13 speed... Can a 10 speed be modified into...anything?

Can anyone help clear this up for me?

Thanks!