I'll take one of these transmissions, Please!

[FRDnemesis]

http://www.youtube.com/watch?v=ipC8I...95F3A9F7692F06


Got 25 grand I can borrow?

[yota]

that rattling noise would drive me fucking crazy

[FRDnemesis]

Originally Posted by yota

that rattling noise would drive me fucking crazy

The rattling is from the reverse lever on the front of the stick. easy fix

[gearmesh, inc.]

I wonder if that EMCO sequential is like the HKS one here:



The HKS cutaway view of operation is pretty much the same way a motorcycle transmission works.

[FRDnemesis]

This guy actually stuck one in his mustang in the Czech Republic... money, money , money! I'd love to have one though!

http://www.youtube.com/watch?v=S4MCI...eature=related



Gerald, do you know much about these? How much time do you get out of one of these before a rebuild is needed?

[gearmesh, inc.]

Originally Posted by FRDnemesis

Gerald, do you know much about these? How much time do you get out of one of these before a rebuild is needed?

The old style non-synchronized heavy truck transmissions work off the same kind of principle for the rotating assembly. They just had the typical H type shift pattern to the stick to where you could skip a couple of gears if you wanted to like in a modern manual trans. These heavy truck transmissions might not have had such a generous dog engagement clearance like I saw in the HKS vid, so the truck drivers that can shift one of those old transmissions efficiently had to do a little speed matching with the throttle to shift them consistently. As far as the durability of the design, there are still a lot of those old truck transmissions still around.

For the sequential shift mechanism, a rotating worm track drum is used to engage pins on the shift fork rails to move them as needed to lock a particular gear to the output shaft and transmit power on through. The shifter lever itself rotates this drum in a ratchet style manner so that the drum only rotates one gear change increment at a time per stroke of the shift lever. Motorcycles have been using the worm track drum method for a long time to perform the one gear at a time sequential operation.

If you have ever had the chance to row the gears on one of those faceplated T-56s, gear engagement internally is pretty much the same, but with an H style shift pattern. With an H style shift pattern, you are the one that selects a particular shift rail when you move the stick side to side and push or pull. In the sequential shifter, the worm track drum selects the shift rail for you. All you need to be concerned with is either shift up or down.

[FRDnemesis]

Originally Posted by gearmesh, inc.

The old style non-synchronized heavy truck transmissions work off the same kind of principle for the rotating assembly. They just had the typical H type shift pattern to the stick to where you could skip a couple of gears if you wanted to like in a modern manual trans. These heavy truck transmissions might not have had such a generous dog engagement clearance like I saw in the HKS vid, so the truck drivers that can shift one of those old transmissions efficiently had to do a little speed matching with the throttle to shift them consistently. As far as the durability of the design, there are still a lot of those old truck transmissions still around.

For the sequential shift mechanism, a rotating worm track drum is used to engage pins on the shift fork rails to move them as needed to lock a particular gear to the output shaft and transmit power on through. The shifter lever itself rotates this drum in a ratchet style manner so that the drum only rotates one gear change increment at a time per stroke of the shift lever. Motorcycles have been using the worm track drum method for a long time to perform the one gear at a time sequential operation.

If you have ever had the chance to row the gears on one of those faceplated T-56s, gear engagement internally is pretty much the same, but with an H style shift pattern. With an H style shift pattern, you are the one that selects a particular shift rail when you move the stick side to side and push or pull. In the sequential shifter, the worm track drum selects the shift rail for you. All you need to be concerned with is either shift up or down.

Never had a chance to row through a faceplated gearbox. I imagine it takes a lot of de-programming your brain to not let off the accelerator when shifting.

Is there really that much different inside a sequential gearbox to justify the 25k price tag or is it just because it has the race car tag attached to it?

[gearmesh, inc.]

Very limited production quantities for the race and vette crowd!

If these were ever mass produced, the price would come waaayyy down. Look at it this way...you could by a couple of complete motorcycles with $25k, and the motorcycles already have a sequential gearbox! It's like getting the engine, chassis, and wheels for free!

[oldskoolstang]

Badass transmission. It would be a blast to drive

[Qwik_Sn95]

straight cut gear's in transmissions whine all the time. The noise's in that vid are what you would hear all the time. I know the dogbox's for DSM's are only like 5k because there was much more demand. The work similar but to the trans posted but still have a standard 5 speed pattern.