What are the secrets to a 15 spd...

That would be a 15 over. Hence the saying " put it against the dash." The pattern makes an U shape. 1-2-3 are the same. 4th is in the 5th hole and 5th in the 4th hole. You may have one of these. They are very common. If your truck bogs down or doesn't take the shift, try the over pattern. That's on the low, direct, and high side.

 

Or a "Knuckle Buster" 15

 

I thought that would be too old school.

 

LMAO....You may be right.I know Brick's calling it right too.You run a knuckle buster for awhile and get used to it and then jump back into a standard and everytime you get under pressure or let your mind wander you'll make some gear dust and feel like a goober everytime you do it.

 

#### you Now I have all this coffee on my chest....
Never actually heard of a real reducer 15 speed ?
Now thats a Fuller right ?
Been only used to RTO18´s and such.
So in one with a deep reducer you also have the Range and Splitters ?

 

I can just picture the conversation.....

 

LMAO....You should have seen me jump in my first super 10 !!!!! The guy left the truck already hooked to the wagon at a repair shop for me to pick up( where it had just had a clutch put in btw),the ol'lady drops me off,I get my radio and scanner stuck in it and roll out of the parking area onto a BUSY four lane.....AND BLOCKED TRAFFIC!!! I would go up a gear and take off and try to float another one like it was a straight 10 (btw..it was very cold out and thats not a super 10 s friend anyhow)....I called that guy while I was rolling about 10 mph in a 55 zone and that monster from the movie alien popped out of my mouth.I called him every derogatory name I knew(and I know a whole bunch of em.lol) before I paused for a breath.He told me to breath into a paper bag(he has my twisted sense of humor)and calm down....I told him what was going on and HE blew a gasket and told me to pull over and sit tight while he called the shop and ripped them a new one and like me,he doesn't own a pair of kid gloves either so I can imagine the ### chewing he was laying out to that shop owner.In the mean time I called another truckin' buddy and told him how things were going (He knew the truck well) and he said"UHHh ,you know thats a super 10 don't you???? I informed him that I did and he asked me when the last time I'd driven one was and maybe I was doing something wrong with it.I told him I'd NEVER driven one but that I hadn't just fell off the turnip wagon,something was wrong with it.He laughed big time and offered to walk me through it on the phone.Low and behold I was moving down the shoulder of the road like a kid whos just learned to ride his bike!!! In the middle of all this, my joy was replaced by panic as my phone beeped with call waiting ,which was the truck owner calling me back.....My friend was HOWLING with laughter because he knew I was in a jam and I was going to have to call on EVERY bit of my BS super powers at one time to get out of this one without it becoming a local legend that would haunt me for the rest of my life,possibly get my ### kicked by the shop owner and the two mechanics he had riding in the truck with him headed my way and losing my job within 15 minutes of starting and the truck owner using his cell phone DAC report to make me look like the idiot I was.WHEW!!!...I told the owner that I'd jacked her back and forth a few times,something clunked and everything seemed fine now....no clue what happened !!!( Rule number one...always leave something to the imagination and an "expert" will fill in the blanks for you)..He bought it and went to 'splaining to me what all it could've been and he calmed WAY down.I just acted stupid (which is not really acting for me) and agreed with him(rule number two...back the winning team).In the middle of all this the shop crew shows up and you can tell there had been a wholesale ### chewing going on all around..the shop owner got one and then had passed it down.We all knew this shop owner and didn't much care for his arrogant attitude nor his gouging ways and I seen this as maybe my only opportunity to mouth him a bit and him keep his mouth shut so thats just what I did....He was the NICEST I'd ever seen him and had honey dripping off his every word.As his hands crawled all uder the truck I gave him the same story I had the truck owner and you could see relief wash all over his face that the truck was moving now with no problems and he gave me his personal cell number and told me to call anytime day or night if it acted up at all.We all left off the shoulder of the road with a sigh of relief that the problem was solved.I just had one more call to make to put everything to rest.I called my trucking buddy back who had walked me through it and he was still laughing so hard that he was almost gagging.He was kinda known for using "commercial company" on occasion and he never kept it a secret to anyone.I said "If you tell anyone about this I'll tell em' about that time you picked that transvestite lot lizard up in Little Rock and didn't find out you guys were on the same team until you had already consumated the marriage".He was quiet for a second while he looked at his cards and then said " Now Mule,you know thats BS,I didn't do that" and I replied "I didn't say you did it....I said I'd tell em you did and the way I BS,who do you think they are gonna believe".Thats been 10 or 12 years ago and to my knowledge that super 10 is still doing fine in that ol' truck and from then on the truck owner got a break on oil changes and a friendlier attitude at that shop,I grew to love a super 10 and my truckin' buddy NEVER breathed a single word about any of it although it probably wakes him up in the middle of the night from wanting to.

 

: 15spd is as easy as a 10spd. The lower 5 is for deep reduction (dump truck, mud and dirt type terrain) they move the truck at very low speeds. The mid speed are just like your low on a 10spd. The high, has taller gears and is able to handle speeds as high as 90mph and above. The best transmission ever built versatile and strong.