How to shift 18 speed? When And how do you Drive it as A 18 speed, 13 speed and 9 speed

I was a little fretful the first time I was saddled with a 13 speed. It only took about a half hour to get the hang of it. I just watch the tach. And eventually, just by the feel of the RPM can determine which range to be in. I enjoy it now. The other posters here have good suggestions on videos and literature to read.

 

I did but they don’t give enough details

 

This is an old school one for the 13 speed.

 

Split shift isn't that hard. Bring the tach up to the shift RPM, split up, let off the throttle. Once the tach falls and you hear it catch the next gear, ease into the fuel again. When you need to shift the main box when in high split, just before you move the stick to the next position, knock the splitter back to low and make your upshift. You'll need to be approximately twice as quick as shifting without the splitter since you're shifting half a gear.

 

Once you get used to it you'll never want to drive a 10 speed again. I hate 10 speeds I'd rather have a 9.

When splitting you pretty much more the stick as quick as possible or you'll catch it too late.

@SmallPackage cool vid on the old school 13. We're one of the few still running a .62 od. Imagine how fast a new driver would tear one up trying to split it like a new RTLO

 

Almost as fast as me trying to split a newer one like the old ones. Lol! Going from a post select to a pre select wasn’t natural.

 

Like me switching between the 2 trucks LOL The other truck has a Mack 18

 

15 is also acceptable lol.

 

I used to like my 15 double over.. until I went to my current, a 13.
It didn’t want to go over and down, but over and up, took a long time for arm not to go to wrong gear