rally style gearbox

28th April 2009, 13:19

does anybody know if you can get a rally style gear box (sorry, im usure of the correct name) for a saxo and where you can get one from and how much approx...

the sort where you just push the gear lever up and down to change gear.

thanks given.

28th April 2009, 13:21

A sequential box is over 8k for 6 speed, and 5k for the sadev 5 speed, but the gear clusters are a bit naff.

28th April 2009, 13:21

you mean a sequential??

there around 8 grand

damn you ryan!

28th April 2009, 13:36

fook me.

28th April 2009, 13:38

what were you expecting it to be £500? lol

28th April 2009, 13:40

rofl
if they were affordable a lot more people would have them lol

28th April 2009, 14:30

probably the best option is to get something like a be4 picasso casing and fit a BE straight cut gearset.
Thats still expensive though. I have a BE3 straight cut box and reconditioned thats worth £1500 with its plate diff.

Kev

28th April 2009, 14:32

The BE box you have kev I take it, its the cup cluster?

Seen a few of those knocking about,

28th April 2009, 14:48

nah its a 5 speed rally gearset made by Bacci
Its straight cut gears with a synchromesh, but to make it suitably geared for the track it uses a standard final drive. Has a plate diff too

I bought it, looked at it, then got offered a touring car sequential box in bits that would ultimately cost a shedload more as it needs restoring.
Tempted to stick it on another 205 but I really should just sell it to fund the other gearbox repairs lol
Kev

28th April 2009, 14:57

lol! boxes are a nightmare. I was toying with so many different ideas for mine. Shame the sadev 5speeds gear clusters are how they are

I looked at cup boxes to etc.. lol

28th April 2009, 15:18

Whats the difference between normal and sequancial gearboxes?

*Waits to absorb more wisdom*

28th April 2009, 15:23

Quote:

Originally Posted by SaXo_vtr123

Whats the difference between normal and sequancial gearboxes?

*Waits to absorb more wisdom*

Normal boxes you change with the H pattern, sequential is the simple up and down motion. Faster gearchanges, and depending on the box type the spec you have things like full throttle gearchanges with a hand clutch on the lever etc...

28th April 2009, 15:25

Quote:

Originally Posted by Ryan

Normal boxes you change with the H pattern, sequential is the simple up and down motion. Faster gearchanges, and depending on the box type the spec you have things like full throttle gearchanges with a hand clutch on the lever etc...

Thanks! i should have been able to guess what it was from the word sequencial

28th April 2009, 15:26

Quote:

Originally Posted by SaXo_vtr123

Thanks! i should have been able to guess what it was from the word sequencial

Just look on wikipedia, full explanations on there even if not the best.

28th April 2009, 18:21

Do you still have a manual clutch on a sequential box?

28th April 2009, 18:24

depends on the set up mate, - our Scanias do lol but my mates BMW didnt.

28th April 2009, 18:28

Drop a hayabusa engine in, seqential box, throttle bodies, 160bhp standard around 100ftlb iirc. I think you need closer to ten gggg's for that conversion though and and angle grinder to chop as much dead weight out of your car as possible. Check the vid on you tube of the hayabusa engined smart car and have a sick bag ready, it makes me want to weep.

28th April 2009, 18:31

Quote:

Originally Posted by Nij

depends on the set up mate, - our Scanias do lol but my mates BMW didnt.

I cant imagine you would! There wouldnt be much of a shift change time reduction i guess

28th April 2009, 19:35

on your road cars, they are not sequential gearboxes. They are glorified automatics with fancy paddles and gearlevers, but still tend to be ecu controlled.

A proper sequential gearbox is mechanically operated either with a gearlever or a hydraulic ram linked to paddles. It does not need a clutch per se. What you have is an ignition cut off to cut the power as you change gear and you push/pull that lever as fast as you possibly can to engage the (dog) lug gears.
There is usually a clutch to give mechanical sympathy and extend the gearbox life. Smashing the lug gears into position can chip them, eventually you start loosing gears so a clutch allows a more delicate gearchange. Best practise is to use it under braking when the downshift is not so time critical.

For my racecar we could potentially save a second a mile using a sequential gearbox over H pattern

Kev

28th April 2009, 19:37

Quote:

Originally Posted by KamRacing

Best practise is to use it under braking when the downshift is not so time critical.

like bic does smashing it down 6gears in one fell swoop?

28th April 2009, 20:03

Quote:

Originally Posted by JoshB

I cant imagine you would! There wouldnt be much of a shift change time reduction i guess

our scanias, you only use the clutch to set off anf stop, once rolling, you use the sequential padles

28th April 2009, 20:17

Are they the same as on a bike? Where you can do clutchless upchanges at full beans just shut off the throttle, clutch down and clutch up when not at full whack.

Kinda OT but is there a slipper clutch equivalent for cars.

28th April 2009, 20:51

Quote:

Originally Posted by Ryan

like bic does smashing it down 6gears in one fell swoop?

Thats ok in theory if you do it right. I've always thought his downshifts were a little slow and sound weird though that could be the way the ecu controls the rev cutting.

how to do it properly (straight cut final drive so ears will bleed!)http://www.youtube.com/watch?v=9aP4e1F85zc

28th April 2009, 21:04

Quote:

Originally Posted by Scribbles

Are they the same as on a bike? Where you can do clutchless upchanges at full beans just shut off the throttle, clutch down and clutch up when not at full whack.

Kinda OT but is there a slipper clutch equivalent for cars.

Bikes use sequentials too as they are more compact. The slipper clutch helps keep the bike balanced under braking and isnt something needed in a car. In a RWD car where you can lock the rear wheels on a downshift you can just learn to heel and toe.
Your standard H pattern gearbox has sychromesh which helps match the gearspeeds. This enables smooth changes but there is a time delay as the two gearspeeds match. Trying to rush the change will just cause extra wear.

6th May 2009, 04:31

Quote:

Originally Posted by KamRacing

Thats ok in theory if you do it right. I've always thought his downshifts were a little slow and sound weird though that could be the way the ecu controls the rev cutting.

how to do it properly (straight cut final drive so ears will bleed!)http://www.youtube.com/watch?v=9aP4e1F85zc

that vid is fantastic