DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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After the previous post about sequential boxes and the little discussion about easytronic It got me thinking about using easytronic on my 1.8 and I started having a little look around. I found a decent high res image of the easytronic box, as you can see its a standard F10/F13/F15/F17 casing with an electronically controlled solenoid selector mechanism and a hydro-electric (if thats the right term) slave sylinder actuator:
After a little more digging I found out that GM are replacing the easytronic system with something called Ricardo eAMT which is another add on for the standard small block gearboxes but this system has shift time (or torque interupt as they call it) of only 0.35 seconds  That is VERY VERY Impressive!
Apparently this system will be in new Corsas?
quote:
As a part of its ambitious programme of automotive transmission concept development, Ricardo has unveiled a research prototype vehicle that demonstrates the company's patent pending electromagnetic linear actuation technology. This technology offers a low cost route to robust and highly efficient Automated Manual Transmission (AMT) and dry Dual Clutch Transmission (DCT) vehicles, capable of delivering increased fuel economy and lower emissions
The development vehicle unveiled today is based on an Opel Corsa 1.2l gasoline automated manual transmission in which the control and actuation system of the original Easytronic system has been replaced with Ricardo's patent-pending electromagnetic linear actuator technology. This advanced technology is sufficiently versatile and controllable that it can be multiplexed in order to operate both the clutch control and gear selection functions. In the research prototype vehicle this eAMT system demonstrates:
- Two-pedal vehicle automation at low cost, owing to a significantly reduced parts count through use of a single electromagnetic actuator in place of separate clutch and gear actuator units
- Opportunities for reduced size and weight
- Controllable actuator force of up to 800N peak and 350N continuous
- A torque interrupt of as little as 0.35 seconds during shifts
- An advanced implementation of Ricardo AMT control software employing clutch 'kiss' point adaption techniques and DCT-like microslip control of a single dry-clutch.
http://www.ricardo.com/media/pressreleases/pressrelease.aspx?page=121
Interesting stuff!
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BluKoo
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Registered: 8th Apr 02
Location: Stonehaven (Scotland)
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I love lamp!
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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Obviously the Easytronic would need some jiggery pokery to move the clutch actuator as its in the way of the mounting points for the corsa B.. But the later Ricardo box would go straight in a B 
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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quote:
Originally posted by BluKoo
I love lamp!
uh? 
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Mattb
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Registered: 2nd Feb 03
Location: Under your sisters bed
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looks like a dumbed down variation of VAG DSG gearbox...
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DizzyRebel
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Registered: 2nd Jan 09
Location: Lincoln
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whats wrong with a conventional 'dog' seqential gearbox?
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Rob E
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Registered: 1st Jan 06
Location: Madeley, Stafford....I want to live back in Wales!
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Good, the vauxhall easytronic boxes are terrible, such a horrible gear change
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Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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My mum had a eastronic box in her old corsa, was utter shite.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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OMG Ricardo specialise in motorsport drivetrain, this gearbox is going to be fucking good, unless vauxhall water it down a bit for cost cutting, which will probably happen....interesting stuff indeed, I really hope they make it.
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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quote:
Originally posted by DizzyRebel
whats wrong with a conventional 'dog' seqential gearbox?
Nothing but would you really want one in a road car?
I'm not sure I would want to do a rebuild on one every few months.
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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quote:
Originally posted by Adam_B
My mum had a eastronic box in her old corsa, was utter shite.
I'm interested in finding out if its the software that is to blame (i.e. the ECU gives a sloppy slow change) of if its litereally down to the fact the actuators cant work fast enough..
If its down to the ECU creating a basic controller that allows you to select a given gear by giving the right signals to the actuators shouldnt be too hard as it looks like quite a basic setup.
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Warren G
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Registered: 14th May 06
Location: Kent
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shitish things ever
in auto mode takes years to change gears
in 'manual' mode still isnt great, and doesnt always change when you want it too
load of wank, dunno why people buy them, might aswell get a auto
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pow
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Registered: 11th Sep 06
Location: Hazlemere, Buckinghamshire
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1.8 semi auto? Outside the box
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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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I took a 1.6 EasyTronic Astra H out for a spin.. When shifting it backs right out off the throttle which makes it really sloppy..
I'm interested to see how fast the actuators work. Obviously on a car which isnt fly by wire you can shift with throttle load... I was thinking along the lines of using the selector actuators and binning the clutch actuator, that way you can use the clutch and throttle like normal but you wont be able to fuck up shifts by being hamfisted and you wont even have to think about which gear you are in, up is up and down is down 
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