sequential gearboxes

[Roy]

Hi Simon 

        " Shift without lift " sounds good and i have
heard a little about it, is this where the engine
management system reduces engine rpm by cutting
cylinders during a gearchange ?

If I can be of any help with the EFI stuff let me know

               Roy 

--- Simon & Heidi Young <mothra at netspace.net.au>
wrote:
> 
> Finally something I can contribute to, I'm still
> learning all this EFI
> stuff.
> 
> Of course sequential boxes are kinda EFI related as
> one of the advantages
> they bring is the capacity to set up a "shift withou
> lift" system,
> programmed through the ECU.
> 
> It woult be possible to rig a hydraulic or
> electro-mechanical system to
> make an H pattern box shift like a sequential (ie
> the lever acts like a
> seq.), the question is why bother, it will likely be
> more clumsy and
> innefficient than a properly set up H pattern. 
> Anyway, if the box has
> synchros you will probably not be able to use the
> faster shift speed a seq.
> system may give you.
> 	
> The other alternative would be to modify the box to
> make it a true
> sequential.  This would involve mounting the forks
> on a rail where they are
> free to slide and adding the "barrel" to make the
> right fork engage as the
> previous one disengages.  Yes it's done exactly like
> a motorcycle box. 
> Entirely possible and a challenging project for a
> well equipped machinist
> but for the DIYist ?
> 
> I know where you are coming from though, how slick
> do those CART/BTCC/WRC
> shifts look.
> 
> Simon Young
> Sunbury, Australia
> 
> 
> 
> 
> 
> 

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