Spicer 16speed Transmission demonstration

Shifting demonstration made by request
Spicer Model 8716-3B
Year 1952
Cummins 335 Turbo
Spicer 16 speed "Married" (4 main, 4 auxiliary)
6 inch chromed pipes
Aluminium; "butterfly" hood, cab and sleeper on "railroad track" steel frame
32inch "Coffin" Sleeper
24.5inch 11R front on Alcoa's and 24.5inch 285/75 rear on Dayton/Spokes

[@Darstrom]

As been pointed out a couple times you never use the first gear on the auxiliary shifting up as this is the low gear and have about the same ratio as the previous main gear in 4th auxiliary

[@carterbowe9964]

Oh, that's what I thought. When see you driving you didn't go into first you always went into second. Cool!. BTW thanks for this demonstration

[@jerrykinnin7941]

1st 1st is when you want to pull a house off its foundation up the side of a mtn. Cause you want to see the sunrise.

[@benedictroberts678]

So 3-1 is the same as 2-4?

[@Darstrom]

@@benedictroberts678 Yes pretty much!

[@jordonthompson542]

Good to know...thanks!

[@phsycopiano]

FINALLY someone demonstrate how those bad boys shift. Thank you some much

[@Darstrom]

phsycopiano I'm happy you find it useful!

[@sabrinacordell6290]

Just remember not to shift the auxiliary back to 1st on each run through.

[@MrHarleyoldfart]

phsycopiano. BUT, they don't all shift the same, i just watched another demo and it was completely the reverse, i don't mean the pattern, i mean the use of the boxes.

[@mariusmadsen888]

I under stand the shift pattern 100000000% now. I can't stop doing it all the time!

[@Darstrom]

Marius Madsen Great to hear!!

[@mariusmadsen888]

Darstrom Your KW is awesome!

[@truckerray7533]

Yup. . . .that a 4 & 4 "set of sticks" set up! I've drove several different "sets" combinations including a 10 speed main with a 4 speed brownie as well as a 6 speed auto & a 4 speed brownie. . . . .I love these "old school" combination setups & miss em

[@severesilence1871]

YO WE HEARD YOU LIKE GEAR SO WE ADDED AUXILIARY GEARS TO YOUR MAIN GEARS

[@carterbowe9964]

Lol

[@oldcroneysgarage9739]

I love gears lol

[@instantvideo561]

i always got confused how to operate them .but now i understand it easily.thank you sir.

[@user-jq5iw4dg3s]

Thank you for showing how that is shifted. I will study the pattern. Will watch it a few times

[@raymondalberdi5537]

Had been waiting for someone to go through slowly and show it to those who hadn’t operated one yet

[@LeoHernandez-rb1sf]

nice job bro I always wonder how it worked finally someone shows how is done.

[@vampireofsussex]

So it's basically a 16 speed with 4 reverse gears

[@FirebirdCamaro1220]

You only end up using 8 to 9 of the forward gear combos though

[@SteveCarras]

Yes. But read above.

[@eprofessio]

My first rigup truck in the oilfield has a 4 speed secondary and 5 speed main box. It would move just about anything. The only thing that ever stopped it were the front tires coming off the ground from weight.

[@jackking5567]

So pleased I leaned 16 gears in a modern truck!

[@thomaskirkpatrick4031]

Finally, someone shows the proper shift pattern. I've watched many videos that claim to explain the operation of a twin stick equipped transmission, but none of them actually showed it like you did, thank you.

[@Darstrom]

You're welcome

[@frontagulus]

My two cents having driven a 4 x 4 is that the gears in the auxiliary transmission in my truck are: deep reduction, lo, direct, overdrive. So deep reduction was rarely used. But Spicer produced a range of auxiliary transmissions with varying ratio configurations so some transmissions really did have four on-road ratios. So commenters that said "you never reuse first" are only correct for some transmissions. Matter of fact, I never used deep reduction on the road - there was no point. Mine has a deep reduction because it was a semi-off-road truck used in the forest as well as on-highway. Top speed of 48mph by the way with 38k double-reduction Timken axles

[@Darstrom]

Thanks for the info that certainly makes sense!

[@Kirann2487]

Thank u so muchhhh in one min u teached me .....

[@BryanAM7]

This is a masterclass

[@marcosrogeriobuzelli8403]

fine explanation 👍👍👍👍👍

[@rahule.s7456]

How much sophistication do you need for the gear shift ? Manufacturer : Yes

[@rogerdemontferrand3696]

Belle explication, bien claire 👍!

[@bugey8226]

C'est l’explication que je recherchais

[@mr.j997]

Do this and keep your eyes on the road at the same time. Holy Moly!

[@jerrykinnin7941]

Listen and feel. When you learn this you can float a twin stick and skip gears. Use your fingertips. And be gentle.

[@aleksihaapasaari]

Thank you

[@mikeevanoski1108]

My first truck, 66 Brockway 4x4 spicer 238 detroit, spanish steering.

[@78625amginE]

That was bonkers.

[@jerrykinnin7941]

When I ran a tri axle dump. Wed pave alot of country lanes from one end to the other. No room to go around the paver. So wed back down 2 to 3 or more miles. The joke was "but officer I couldn't have been going 45 in a 35. I was in reverse."

[@sanatoriosaturno]

Good vibes ! by Brazil

[@53ferrera]

Mais um brasileiro vendo caminhão americano!!! Saudações...

[@CarlosHenriqueNoronhadeAguiar]

@@53ferrera Esse cambio tem pressão menino!!!!!!!!!! AVE MARIA!

[@raulbarrios1893]

Finalmente entiendo la transmisión de doble bastón, en un principio se ve mucho muy complicada. Saludos desde Irak Puato gto mexico.

[@donparker8246]

Now it makes sense

[@SOU6900]

I would like to at least make an attempt at trying to shift a twin stick if I could just find a truck to try it on and some country back roads. Also I just came across your deviantart profile. Some nice looking work you got.

[@Darstrom]

SOU6900 Thanks! As for twin sticks, you have to try it one day!

[@rynbrk261]

thanks for sharing. I think it would take a considerable amount of practice for any beginner to feel comfortable hauling heavy loads through the mountains.

[@Darstrom]

Yes! I wouldn't do it before hauling on straight roads for a while!

[@DanielBoonesloggingvideos]

sweet !

[@YCS-186]

Holy shit I've driven a 36 Spicer before but this seems close to impossible

[@estebancozak9595]

Muy buena esplicacion para los q vemos videos de camiones americanos. Saludos desde argentina

[@matthewjones8620]

are you sure you go back to 1st in the auxillary after each main shift? usually you go to 2nd-3rd-4th in the auxillary because 1st in the auxillary is usually redundant once you get rolling. I have a 4 speed- 4 speed spicer combo in a 48 Kenworth on my channel

[@Darstrom]

Matthew Jones I've sure seen it! Maybe you don't need to use it unless heavy loaded, but it's still the next gear after each "jump" or it wouldn't be a 16 speed right?

[@sabrinacordell6290]

No you don't go back to " deep under" 1st on the aux it's too low. It's like shifting from 4th to 3rd. Start with both in first then shift the aux up through 4th then shift main to second and pull the aux back to 2nd then third and 4th. Then shift main to 3rd and bring aux back to second and start splitting again. The term 16 speed is rather a misnomer You have sixteen total gears to work with but don't necessarily use all of them, It's like the 15 speed which is a ten speed with a deep reduction box. You have 15 gears to work with ,but if you start in deep 1st and go all the way through the gears, you only make 12 shifts. Bringing the aux back to deep under on a 4x4 or 5x4 will result in a hell of a grinding and wild rpm . Think of pulling the range selector up in 5th . in a 9 speed and shifting back into 1st instead of 2nd. It's a downshift. Hope that helps. We have an 83 Pete 400 A model Cat with 5x4 . A 72 Pete 4x4 318 Detroit. 1978 K.W. with a 14 speed Spicer and a 73 Road Boss with a 12 speed Spicer.

[@Darstrom]

sabrina cordell Thanks for clearing this up! I have not been able to try it with an actual load therefore I never use more then 7 gears. It's great to hear from someone with the experience!

[@sabrinacordell6290]

No problem. From the grandfather on down, there's a hundred years combined experience in the family business. I suppose the best way to tell people is ,after shifting has begun, forget about deep under 1st in the aux . It doesn't come back into play until you stop and pull out again.

[@GeorgeCarlin88]

@@sabrinacordell6290 if someone share all combinations ratios, i think it will clearly understand. even not necessary real ratios. just which one long or short;. ex; main2 aux4 ( or =) main3 aux1.

[@abrasadorenrique3843]

That was helpfull thank you

[@Darstrom]

Godoy Enríquez I'm glad you found it helpful !

[@claudiahilker7307]

Thanks!

[@muratbayrak57]

Great

[@yemmywesey4750]

Thank you for this great video, please can you do a video on the 3 gear sticks spicer transmission.

[@Darstrom]

You're welcome! As far as my knowledge goes those do not exist. I heard of some 3 stick Mack gearboxes but haven't seen em.

[@allenbeck7321]

You do not go BACK to 1st on auxiliary once you shift the main up. Then you have to learn where you're going to go when you have a rapid slow down cause somebody pulled out in front of you. Like anything with Trucking it's all about seat time and your personal pride of doing it correctly so you're not grinding or jamming or abusing your equipment. TRUCK ON!!!

[@gregw8232]

Congrats, you're the only one to mention that. Thinking the guy demonstrating never driven this set up before.

[@eduardoduvoisin2238]

Muito boa a explicação

[@adolfolagos9794]

Te doy el pasé papá, con usted si le entendí la forma de manejar es transmisión, ya que otros vídeos son mudos, saludos desde Honduras.

[@normanmcneal3605]

Cut my teeth on a five and four. Most drivers think you have to start in low and go through every gear. Most loads only require shifting ten gears to get to highway speeds. Don’t waste energy and transmission to impress others

[@theshadetreewelder3523]

Norman McNeal what about skipping gears and double clutching vs floating

[@Aleiria13]

Norman McNeal; A friend of mine wants to give me his ‘49 IH Loadstar with the twin-sticks, and I wanna learn learn how to drive & shift that beast so it isn’t hauled to the junkyard!👍🏽😈

[@angrytrucker3628]

Never drove a 4+4 but on my 6+4 there are overlap gears so you its more like 2-3-4 on the aux since 1 on the aux and next gear up on the main is essentially the same ratio

[@Darstrom]

Angry Trucker Yes I learned this from Matthew if you go read the pinned comment, so really it's a 13 speed and not 16!

[@perialis2970]

lmao the feeling of the first time trying to learn a manual comes

[@chajirou]

👍️

[@norbertagoston9320]

Wow, this is really simple, i watch videos with twin stick transmissions and it was so confusing, after watching this video, it looks so simple, just little unusual.

[@Darstrom]

Yea the mechanics are quite simple! Hard part is to match the RPM with the speed

[@zsoltlukacs8438]

Szerintem rosszul mutatta a hapsi...A jobbos kar a szorzó a balos a fő váltómű...

[@randomdude9269]

On the driving videos it look really hard , but it's actually pretty simple

[@jessdw79]

Pain in the ass.

[@EllipticGeometry]

It must be interesting to shift both at the same time. Suppose you’re in 3-4 and you want to shift to 4-2. You go N-4, decrease RPM significantly, 4-4, 4-N, regain much of the original RPM, 4-2. Or some other sequence that stays within the engine’s limits. Right?

[@FirebirdCamaro1220]

If you were in 3-4, you would only shift the main to 4 and leave the brownie where it is. Otherwise you would effectively downshift, 4-3 is a lower gear than 3-4, if that makes sense

[@frenchcanadianbastard9998]

And when a drive 4 wheeler I have a hard time keeping track of witch 4 gears im in

[@jerrykinnin7941]

I wish some one would show a 3 stick Mack. Dad drove a 56 LJ mack log truck when he was in high school. He said that's the trans it had in it. A 5 x4x2.

[@Darstrom]

I assume the 2 speed is the rear axle and can be shifted either any time or only ay a standstill. So you drive it like a normal twin stick. I could be wrong though.

[@FirebirdCamaro1220]

The third shifter would be for a two speed rear end

[@thejuicyorange8526]

And I just need to move a little stick behind the wheel forward and backward to change velocity

[@johnvelas70]

For simplicity I will call the aux range ABCD. I was taught if heavy/off road 1AB, 2AB, 3BC, 4CD, for highway use, 2BC, 3BCD, 4CD.

[@NeilLB7]

On some of the 5x4 transmissions, and perhaps the 4x4 transmission, some of the gear selections going up are numerically the same as gears you've already used...so you can skip gears sometimes.

[@Darstrom]

Yes I think that's the same with all of them. I pinned this on top of the comment section as I didn't know this when I made the video. You'll skip first aux gear. Only use it as low low basically

[@allterrainoutlaw2958]

Ok I understand that I'm stupidly late but I got one question. With the twin sticks, does one need to double clutch when you shift or can it be a regular press in the clutch and throw it in the next gear. and for using the auxiliary shifter should you by default clutch on every shift when operating the auxiliary? the reason i ask that is because i've seen countless videos of people not clutching when shifting the auxiliary (not knowing if they are floating).

[@Darstrom]

JD714 Gaming Floating is exactly what they're doing and it is the easiest way to drive these since they are made to work like that, clutch only for start and stop! And if you're gonna use the clutch it has to be a double press in order for the gearbox to eaiser match the speed. All the same goes for the aux. Atleast this is how I interpret it

[@allterrainoutlaw2958]

ok thanks.

[@sabrinacordell6290]

Either way is fine,but the clutch was there for a good reason on older transmissions. Double clutching the old transmissions was almost necessary because they were not forgiving when a shift was missed by a half tooth or so. Pretty much all truck owners and road test required strictly double clutching.

[@oldcroneysgarage9739]

I think I want to pull the auxiliary trans out of a chevy dump truck and put it in my chevy truck lol I love twin sticks

[@j.m.5995]

Does someone have actual gear ratios for all these speeds. That to me would make more sense

[@BimBims]

I have a question, if you already in 1st gear, and want to "aux" 1,2,3,4... Do you push that clutch again?

[@Darstrom]

You change the gears just like any other time wether you do it by double clutching or floating (no clutch)

[@kingozymandias2988]

Welcome to the stoneage

[@maynardreed8374]

Sure don't want to forget what gear your in

[@red_naxel]

Ну как на велосипеде кароче, main pattern - передние звезды, aux pattern - задняя кассета

[@nopowerlaboratory]

I love you

[@haroldbenton979]

Try having the one I had in a 62 Emeryville. 5 speed main 4 speed aux and then a set of 3 speed rear ends. She could crawl at less than 1 MPH or going downhill with a tailwind break 100 at top gear in theory as no way a 238 Detroit could produce the needed HP to do that crap. But loaded heavy she could and did move regardless of the freaking weight. Pulling a triaxle high walled grain hopper one that could hold 2500 bushels if needed that truck could still move it. How do I know that well Fall of 94 there was a thunderstorm that blew up during harvest. 2 full weigh wagons of beans 2 full combines in the field I was the only truck there. Boss said dump it all into me and get to the elevator ASAP. I was on the road 1st weigh wagon could reach the road from the edge of the field it dumped into me then the 2nd dumped into it along with both combines. I had to spilt weigh at the elevator about 4 miles away. Front 3 axles where over 70K back 3 74K empty was 28K 112K total weight in grain. That poor 238 sounded like a bucket of bolts afterwards and we had to overhaul it. But she was due for one at the time so while we waited for the fields to dry out we did the planned overhaul for her. Boss said I was throwing flames 5 feet out the stack.

[@Innochamp]

Looks really complicated. How long did it take to shift correctly?

[@CycolacFan]

Nice of them to use different patterns for third and fourth. What happens if one box is in reverse and the other in a forward gear?

[@Darstrom]

Then you go backwards in whatever speed the aux is in

[@CycolacFan]

@@Darstrom that makes sense, thank you 👍

[@TheDirtCatBrothers]

I never could get the hang of shifting these. Got too scared and intimidated by them let alone mess something up.

[@bootztwofivezero9215]

1-1, 1-2, 1-3, 1-4, 1-N,2-N, 2-1, 2-2, 2-3, 2-4, 2-N,3-N, 3-1, 3-2, 3-3, 3-4, 3-N,4-N, 4-1, 4-2, 4-3, 4-4 ?? I want to run 2 m22 transmissions in my S15 truck with close to a 2.83:1 final. I am unsure how to anticipate the shift points or total amount of gears...

[@Darstrom]

I'm pretty sure you can look up gear ratios if you google and search for the specific gearboxes you are going to use. To fours speed is ofc 16 speeds as stated in the video.

[@78a67h]

Now this makes sense. Do you use the clutch much like on a passenger car each time you shift?

[@Darstrom]

78a67h No, only for start and stop!

[@FirebirdCamaro1220]

@@tripplefives1402 correction, all large American trucks European trucks that still have manuals are synchronized

[@henrykjarosz3350]

Unlike others I understood the gear system from another video. But I still don't know if everything is in one gear box or if there are two. But it's still a crazy system!

[@Darstrom]

There are two gearboxes, on this particular one they are bolted together. Usually they have a driveshaft in between them

[@henrykjarosz3350]

@@Darstrom You fools in America. 🙃🙃🙃👍🏻

[@henrykjarosz3350]

@@Darstrom A děkuji za odpověď!!! And thank you for the answer!!!

[@Darstrom]

@@henrykjarosz3350 You're welcome! Greetings from Sweden

[@mehere7514]

both hands on the wheel lol be safe

[@gordhoran2002]

The 4×4 was not 16 progressive gears. First gear on the brownie was a deep under usually only for hard starts. Depending on the ratios they could be used to avoid a split shift eg 3 over was the same as 4 under. We never called a box gears 123, it was always under, direct and over, plus bull low

[@Darstrom]

Yea I got that a while back I think it is highlighted in top of the comment section. The gearbox was however refered to as a 16 speed

[@wwhi2666]

We called Aux 1 “Deep under”

[@AbcXyz-rn2lz]

Modern Eaton has aux too just air controlled with splitter and selector. Most twin stick in modern trucks aren't real mechanical aux and just for appearance

[@Darstrom]

Well correct me if I'm wrong but the modern boxes would all be bolted together into one? Instead of being a separate box behind a driveshaft coming from the main box

[@AbcXyz-rn2lz]

@@Darstrom yeah it's internally seperate

[@percysmith6663]

That must be very difficult to do…I have a lot of respect for anyone who can drive one of these. By the way, what is that round grille in front of the shifters?

[@Darstrom]

It takes some practise but is the most fun you'll ever have! I assume you mean under the dash, that would be a heater fan usually seen on 1940s or early 50s vehicles before they got integrated into the interior design

[@gudmundleirvik4833]

Oldtimer gearbox! Early sixties?

[@GeorgeCarlin88]

why aux's last gear different than regular shift pattern. all spicer trans same. 1-2-4-3?

[@Darstrom]

From what I know you could order them to your own specs. So it's just the drivers preference. On some you will have the main stick on the right side. Or the 4th aux gear down to the right

[@brandonmoffatt6113]

Quick question what would a 10 to a 12 speed be called how many gear main and how many gear aux

[@Darstrom]

brandon moffatt I dont know for sure if they made 10 or 12s back then but the logic would be 5 main and 2 aux for a 10speed, or 4x3 for a 12

[@Darstrom]

I know old Scanias had a five speed gearbox with an 2 speed aux makin it a 10 speed

[@carlgarbuttjr.6339]

Not sure if this is the right place to ask, any input would be appreciated. I have an 18 speed + 4 speed Aux for my heavy haul truck. Haven’t really used the aux. wanted to see if anyone is familiar with the proper shift pattern for that setup. Thanks in advance

[@Darstrom]

Cool setup! To use them all you'd shift the aux 3 times for each gear in that 18 speed (don't use low gear other than in low on the main) If not using it hopefully it was left in 'direct' or lower

[@zacharybishop6595]

So basically you can say the main transmission acts as a range splitter?

[@FirebirdCamaro1220]

It's the other way around, the aux/brownie let's you split the gears of the main

[@carterbowe9964]

What's it like on a 6x4? Is there just two extra gears on the Main or auxiliary?

[@Darstrom]

Exactly

[@FirebirdCamaro1220]

The extra gears would be on the main. Aux's only come in 2 (typically only Mack did this), 3 and 4 speed

[@mateuszpaszkiewicz3831]

I guess If I wanted to build a car around that transmission, then I should make sure the it reaches max speed after final gear combination.

[@mattleonard5268]

So it’s just two 4 speeds put together

[@intercept7965]

0:04 please explain the "caution".

[@Darstrom]

If you do it by accident you eill have a really tough time getting any lever back into gear. You might even have to stop the truck to do so. If it happens going loaded downhill you're probably screwed

[@iBackshift]

yeh heh buddy...you go one gear on the main; then auxiliary box go 2,3,4 then shift one gear on the main; auxiliary back to 2,3,4 then shift another gear on the main; auxiliary back to 2,3,4....and keep on shifting. The auxiliary box is 1st gear, 2nd gear, Direct(3rd) gear, overdrive(4th); this is why you never stick back in first on the Aux-box - first gear in the aux box is too low. You use that gear when you blow a shift on a hill when having to downshift, trying to get the aux box into 2nd; the truck will slow down enough you can jam the aux stick into first to allow you to start to upshift again to 2nd gear.

[@Darstrom]

Yes I got this cleared up for me a while back. The video is really just made to show the layout and since I'm self learned and never hauled any trailers with this truck I didn't know. Still thanks for pointing it out!

[@iBackshift]

Ok buddy, you have to do a video of hauling a load somewhere around 35000 kg's, out on the blacktop, doing about 90kmh and come to a hill. Then the hill will slow you down and force you to "row" gears like you'r rowing a canoe up the creek......hahaha. Hope to see your shifting prowess some day. The big test will be down shifting the main to a lower gear and putting the Aux in 4th(overdrive)..... w00!

[@Darstrom]

@@iBackshift Heck yea that will be one hell of a drive. I will certainly do a bunch of videos when I get a trailer!

[@moto_rad]

Does the main box not switch 3rd and 4th like the aux box? I think the 5 speed spicers are that way

[@Darstrom]

It's reversed from the main yes

[@moto_rad]

Thats weird, are all the 4 speed spicers that way? I have only seen the 5 speed spicers and 4th is down right and 5th is up right

[@Darstrom]

@@moto_rad No idea

[@FirebirdCamaro1220]

@@moto_rad yes, if you watch other videos with 4x4, 5x4 & 6x4, the aux box has the same shift pattern

[@MrKen-longrangegrdhogeliminato]

Why did you not say, that you must UP shift before down shifting?

[@Darstrom]

This is only a demonstration on how the gearbox basically works. Not how you use it

[@AD-yy3it]

Would it have been too difficult for both boxes to have the same shift pattern?

[@Darstrom]

The pattern is not standard. The one ordering would have it to his specifications and it's no bother whatever you get used to!

[@AD-yy3it]

Yeah I guess you get used to everything with practice. Over here it's mostly a standard h with a splitter which looks easier to get used to, though with a fraction of the gears.

[@MrMensajero]

Esa erta una 4x4 yo aprendi en una 5x4 era casi lo mismo solo las combinaciones

[@venutionjill2785]

Husband: i can't get that in right now Wife:

[@_Nobody_Special]

Why’d they swap 3 & 4 on the aux side? To make it even less intuitive.

[@Darstrom]

Custom order most likely. When you bought it new, appearantly you could choose

[@SteveCarras]

Overdrive

[@SteveCarras]

Freaky Friday, maybe?

[@karenf.460]

noo entendii nada... saludos desde ARGENTINA..

[@wuorson5111]

Why the left stick is like a standard H pattern while the right one shifts like a W

[@Darstrom]

They're both still H patterns, why they switched places between third and forth might be customer specs, no idea.

[@FirebirdCamaro1220]

@@Darstrom that pattern on the aux is typical for an aux box, if you watch other videos with people working 4 speed aux's, they shift it the same way

[@stefanm.247]

Please tell me, is it possible to drive the Truck some hundret kilometers without using the aux gear ? Only with main ? (1,2,3,4,R,N) Always without trailor. Thank you.

[@Darstrom]

Yes if you are empty (bobtailing) you can shift the Aux into second or third and then just drive the truck like a 4speed using only the main! On highway speed you're gonna want to shift the Aux into Overdrive however

[@stefanm.247]

​ @Darstrom Thank You ! Found a 1966 Peterbild 281 here in europe its an 8 Cylinder, comes from California,blue/white, i am interested to buy him for fun. I never drove a Truck, thats the problem....People here say that 2 Gearboxes are not easy to handle....A crazy projekt.....

[@Darstrom]

@@stefanm.247 They may be thinking about european twin sticks, which have to be split a couple of time (correct me if I'm wrong) in order to get up to speed. Scania had a gearbox where the second stick acts as the split or high/low range on modern boxes, so only 2 gears. But non the less these are not easy to drive, but if you ever try one or even buy, shift without the clutch. It's easier to learn, especially if you only start driving with one stick. Take it out of gear when no force is applied (either by acceleration or engine braking) and wait for the RPMs to drop until you gently press it into next gear as the engine speed matches the rear wheels.

[@Darstrom]

@@stefanm.247 Is it a Detroit then?

[@stefanm.247]

@@Darstrom I can show you the papers and fotos if you give me your email. US Papers are very (!) strange. Dont know if it is a Detroit, maybe you can see.

[@michaellangdonful]

What truck is this demonstration in??

[@Darstrom]

Michael Langdon 1950 Kenworth CD-521

[@michaellangdonful]

Darstrom So do you shift both gears at the same time? Or do you just go through the 4 gears in the main transmission first and then use the auxiliary transmission second?

[@Darstrom]

Sry for the slow reply. You can leave the Aux in 2nd or 3rd and drive the main like a normal 4 speed if you're bobtailing, otherwise you better shift the aux at least 1 time between each step of the main

[@mehmetefeuzunalioglu3915]

What truck

[@Darstrom]

1952 Kenworth

[@erictulchin2317]

Rather have the air shift style 2 stick are a pain in the ass

[@Darstrom]

But fun as heck!

[@INTERNATIONAL_RDF-D]

Wouldnt it make more sence to describe the auxilery OD as a W pattern Since the motion from 2nd to 3rd is an arch sort of 1 N 4 |/ \ | 2. 3 The twin stick is n forever will be a MANS truck But that pattern has screwed up so many people who are new to it.....

[@Darstrom]

That guy In your unit who's from Texas Neutral is still in the middle, but I see your point since the motion is like a W.

[@INTERNATIONAL_RDF-D]

Darstrom watching you shift your brownie reminds me of the granny 4 in my truck Low gear takes finess And 3rd slips away from me Double clutching saves me quite often......

[@Darstrom]

That guy In your unit who's from Texas Every gear has its own life =)

[@INTERNATIONAL_RDF-D]

Darstrom indeed. It probably Doesnt help since i got the truck second hand from a fire department .... fluid is low in trans Synchro's are worn i need to change the fluid ..... But i plan on getting a 56 gmc 370 n putting a 4 speed OD in it I can shift an old non synch better than my current truck...

[@Darstrom]

Worn synchros must be a pain! Replace it with a non synced gearbox right away ! =)

[@jorgefonseca9225]

This is for a really pure truck drivers 👏👏👌 not for a pussys drivers 🤔 great explanation mate 👍 👏 cheers from Portugal 👍

[@hectorduran4161]

Yo me enseñe a manejar con trasmision spicer de 16 y no era asi

[@Wildstar40]

Explanation would be better if you were driving it.

[@shko0729]

R1 R2 R3 R4

[@roballen8431]

One thing I learned is you need to think two gears ahead when down shifting