0Anthony @ LGMotorsports

Hi guys,

I wanted to take some time for those looking at sequential transmissions and show you what goes inside of a purpose built unit, not just a conversion piece.

This is the same unit we have been running for seasons in GrandAm and very similar to the larger unit featured in our ALMS GT2 Corvette, and the very SAME unit you can buy for your own project.

With over 45 different gear ratios you can custom tailor this box to each track and your car for the ultimate in close ratio gear boxes

These are all built to order and come in almost 20 lbs lighter than the OEM gear box and feature pressurized, filtered oil to all bearings and gears. Straight cut gears with of course replaceable dog rings for engagement.

Assembled main case


Tail shaft removed showing reverse gear


Comparison of the reverse gear to the main gears
Notice how much wider the forward gears are


Shift forks, notice they are gun drilled and feature pressurized oiling passages


Look inside the main case. Notice the large roller bearings and also pressurized spray bar for oiling to the gears


Main gear cluster


Huge main roller bearings for main shaft and counter shaft


Main shafts and shift rail


Gun drilled main shafts, again with pressurized oiling passages


Main shaft support bearings in place


Built in oil pump


Fine micro filter assembly


Oil pick up tube









As you can see it is more than just a face plated, or dog ring gear box T56 that goes into each one of these gear boxes.

While they may not be for everyone, I hope this shows you a bit more info on what goes inside of one of these awesome units! Feel free to hit me with any questions you have!

wjnjr

Great post, thanks

How does the sequential gear selection mechanism work? Could you put up some pictures of those parts and a description of how it works?

And I hope this isn't too dumb a question, but how do you drive one of these? With or without the clutch? How do you rev match on downshifts? Upshifts?

toxin440

amazing piece of hardware -- damn thing is worth 3 of my daily drivers :-p (2012 kia) hah

CGZO6

Transmission ****, gotta love it.

0Anthony @ LGMotorsports

Clutch is needed to stop and start the car. If you want to tap it during a shift you can, or you can drive it like you would a motorcycle...just lift to shift. With some electronics added to it you can also flat shift without lifting but it does require a few more parts. Paddle shifts are on the way as well.


The shifting works pretty much how a motorcycle box works. You can see the main shift rail and shift forks. These are all on rotating cams when you pull back on the lever it rotates the main shift rod that then turns the cams and selects which fork to move forward or backwards to select the next gear.

adamgl

Do you need to clutch and or rev match on downshifts?

0Anthony @ LGMotorsports

If you do nothing to the stock electronics on the car you would need the clutch for stop and start. Once rolling you can drive it like a motorcycle and just lift and blip to change gears.

There are plug in boxes for flat shifting on upshifts. They are working on a paddle shift for up and down shifting without a clutch...again still need the clutch for stop and starting.

adamgl

So to shift from 4th to 3rd you would just push the stick forward to downshift with no clutch and the rpm would jump when the gears engage?

harrydirty

Sounds like with the stock electronics you need to rev match on downshifts, which means good heel and toe technique on the track....and upshifts require a brief lift off throttle. Is this correct?

0Anthony @ LGMotorsports

No need to use the clutch...just lift off or tap the gas and it will shift.

phxcobra

Dear Santa,

I promised to really good this year...

jmudreamvette

Wanna be quick with a stick, Buy one of these

Painrace

I learned on a Saenz dog ring transmission. If I was still racing we would have a few of these.

NICE WORK!

Jim

wjnjr

Tuff dogs! Back in my motorcycle days we used the clutch to shift...

What electronics are added to allow flat shifting?
What will the power assist be for the paddle shift setup? Air, electric, hydraulic?

Got it, now that I know what I'm looking at.
Is there a neutral between all the gears or is it either in one gear or another with a dedicated neutral position between two gears, say 1st and 2nd, like a motorcycle?.

SilveradoSS500

How many miles do you think I would get on the street with this? I NEED THIS ANTHONY

0Anthony @ LGMotorsports

Shift pattern is

R-N-1-2-3-4-5-6

There is a lock out so if you get to happy punching the stick it will stop at N.

You can use something as simple as an ignition cut tied into the shifter for flat shifts on the upshifts, but a full auto blip paddle shift requires a bit more controls plus the electronics to shift it. That piece is still in development.

1981turbota

Drool....That is a work of art!!

One day..you will be mine....my precious...

95jersey

They are badass, one could probably say they are worth 100-200hp in a strait line with a conventional gear box.

0Anthony @ LGMotorsports

What is really fun is having 6 usable gears on track when 6th is barely an overdrive....that will turn a stock Z06 into a down right scary track car alone.

0Anthony @ LGMotorsports

Cool video from a customer's ZR1 that just installed the Emco in their car.

Flat shift was not hooked up for this video, so you can see even without the added electronics just how quickly you can shift this vs a standard 6 spd.