Sequential transmissions
Thread Starter
Drifting
Joined: May 2006
Posts: 1,864
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From: Santa Barbara California
Sequential transmissions
I understand TCI makes a sequential six speed transmission. Has anyone used this transmission in a C2 restomod? If so, what were your experiences and would you use it again?
Race Director
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From: Beverly Hills (Pine Ridge) Florida
Last edited by Plasticman; Oct 3, 2016 at 10:33 PM.
Melting Slicks
Joined: Feb 2010
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From: Reno Nv
Not really, TCI makes an automatic transmission that can be shifted with paddles, that[s not what has been considered a sequential transmission for the last 50 years.
Le Mans Master
Joined: Apr 2001
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From: Sarver Pa
2021 C1 of the Year Finalist - Modified
I have a sequential in my race car. It's kinda like a motorcycle trans, you have to go through each gear in sequence. No skip shifting. In my race car I just lift off the throttle for a split sec then pull back on the lever to upshift. inline shifting no H pattern.
Melting Slicks
Joined: Feb 2010
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From: Reno Nv
Ever rise a motorcycle? Then, you've used a sequential transmission.
Sequential is just the way the trams is shifted verses an "H" pattern.
If the sequential trans has a shift lever, you just keep pulling back for each gear. The shift lever (in race cars) pulls a cable that's attached to the trans shift lever. This spins a drum in the trans that is the same design as a bike trans. The shift forks are moved by that drum vs having shift levers that move the shift forks in an H pattern (like a stock Muncie).
Sequentials can also use an air or hydraulic cylinder, , electric solenoid to actuate the shift lever.
The first pic shows the shift mechanism in one of our Formula Atlantics, the second shows the shift drum on the left side that runs the shift forks. The gears at also a dogring setup (no syncros).
Sequentials shift faster than an H pattern but only because you move the shifter a tad over an inch to change gears.
If you want REALLY fast, you need a double clutch system.
Lou G. Motorsports sells real sequential trans axles for C5-6-7's but you need a really fat wallet to buy one.
Sequential is just the way the trams is shifted verses an "H" pattern.
If the sequential trans has a shift lever, you just keep pulling back for each gear. The shift lever (in race cars) pulls a cable that's attached to the trans shift lever. This spins a drum in the trans that is the same design as a bike trans. The shift forks are moved by that drum vs having shift levers that move the shift forks in an H pattern (like a stock Muncie).
Sequentials can also use an air or hydraulic cylinder, , electric solenoid to actuate the shift lever.
The first pic shows the shift mechanism in one of our Formula Atlantics, the second shows the shift drum on the left side that runs the shift forks. The gears at also a dogring setup (no syncros).
Sequentials shift faster than an H pattern but only because you move the shifter a tad over an inch to change gears.
If you want REALLY fast, you need a double clutch system.
Lou G. Motorsports sells real sequential trans axles for C5-6-7's but you need a really fat wallet to buy one.
Race Director
Joined: Jun 2006
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From: Inverness FL
St. Jude Donor '07
thank you, now I understand...
my Mercedes built Smart has a transmission like that, plus paddle shift, plus bump shift.
Bill
my Mercedes built Smart has a transmission like that, plus paddle shift, plus bump shift.
Bill
Last edited by wmf62; Oct 5, 2016 at 10:20 PM.
Thread Starter
Drifting
Joined: May 2006
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From: Santa Barbara California
I agree the TCI not really sequential. The six shooter from MTI seems really intriguing but I do wonder about the streetability. Paddle shifting would be nice ( similar to the F1 cars) but I imagine it would cost a fortune. I am thinking it would be nice to have a bit more versatility. Perhaps, something like a PDK or the sequential used in the Lamborghini. I would like to to find something that fits the C2 tunnel.
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Thread Starter
Drifting
Joined: May 2006
Posts: 1,864
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From: Santa Barbara California
Bill, you bring up a good point. I guess the PDK or something similar would make it more driver friendly and a six speed manual would also be a more practical choice.
Melting Slicks
Joined: Feb 2010
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From: Reno Nv
Note that both are also transaxles not just transmissions.
The MTI is a sequential manual for C5,6,7.
Costs for a paddle shift setup on a manual isn't a big deal when you are looking at a transaxle that costs $22k +.
All you need are the paddles and a couple solenoids to run the shift lever.
A friend of mine just bought a Wolf race car, it's a 6 speed sequential manual with paddle shifting. The paddles just have a momentary switch on each one. The shift lever on the trans is run by an electric push/pull solenoid, very simple.
Race Director
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From: Inverness FL
St. Jude Donor '07
Bill
at least you could 'skip a gear' (which I do a lot in everyday driving (2nd to 4th or 3rd to 5th)...)
Bill
Last edited by wmf62; Oct 5, 2016 at 10:34 AM.
Melting Slicks
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From: Reno Nv
Race Director
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From: Camp Verde AZ
C1 of Year Finalist (performance mods) 2019
2017 C1 of Year Finalist
I like the paddles, even in automatic mode, if you start pulling paddles, it goes into temporary manual mode.
If want to waste 20 minutes, watch me drive at Spring Mountain.
This was all in manual paddle shift mode.
Doug
Last edited by AZDoug; Oct 5, 2016 at 11:21 AM.
Race Director
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From: Inverness FL
St. Jude Donor '07
Burning Brakes
Joined: Jun 2011
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From: doral florida
sequentials
The F1 in a Ferrari and the E Gear in the Lambo are not automatics. They can be placed in automatic mode but will still be sequential up shifting and down shifting. Even blipping the revs on down shifts. They are manual transaxles with a computer controlled clutch. Unbelievable fast shifts. Think power shift.
Neither Ferrari or Lambo produce regular three pedal transmissions any more.
The C 7 is an automatic transmission that can be paddle shifted. Also fast shifts as seen in the above video on track.
Neither Ferrari or Lambo produce regular three pedal transmissions any more.
The C 7 is an automatic transmission that can be paddle shifted. Also fast shifts as seen in the above video on track.
Melting Slicks
Joined: Feb 2010
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From: Reno Nv
If it can be placed in an automatic mode, it's an automatic in my mind. You have a computer changing the gears no matter if they are a gear set or a planetary.
Even Lambo states that they do not offer a manual any more.
Even Lambo states that they do not offer a manual any more.
Melting Slicks
Joined: Feb 2011
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From: Middletown Ohio
2016 C1 of Year Finalist
My wife's 2007 VW GTI had the DSG 6 speed dual clutch automatic trans. Extremely fast gear changes.
Put it in automatic and it does it's normal driving operation.
Put it in manual and can be shifted with the shift lever or paddle shifter.
The paddle shift was a PITA.
Put it in automatic and it does it's normal driving operation.
Put it in manual and can be shifted with the shift lever or paddle shifter.
The paddle shift was a PITA.