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Matt L

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Registered: 17th Apr 06
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8th Jul 09 at 21:33

the one that you push/pull to change gear minds gone completely blank and cant think what they are called.

ChrisBoom

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Registered: 6th Dec 06
Location: Highland
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8th Jul 09 at 21:34

Dogbox i think.

Straight cut, sequential dog box at that

[Edited on 08-07-2009 by ChrisBoom]

Tom G

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Registered: 4th Aug 08
Location: Cheshire
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8th Jul 09 at 21:35

Sequential?

Dan295

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Registered: 9th Oct 06
Location: London
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8th Jul 09 at 21:48

sequential is with a paddle shift or single lever used to select the next gear, usually straight cut for racing as well, dog boxes are old hat iirc

Ben G

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Registered: 12th Jan 07
Location: Essex
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8th Jul 09 at 21:50

they sound awesome

Matt L

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Registered: 17th Apr 06
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8th Jul 09 at 21:57

i was about to say not all sequential boxes make the loud noise do they? its only the straight cut ones that do.

any benefit to having a sequential box (not straight cut) on a road car?

and before anyone thinks i have lost my mind i dont intend to buy one for the ibiza

sand-eel

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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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8th Jul 09 at 22:01

straight cut boxes make the noise.
Dog boxes have dog engagement, but are still sequential.
sequential boxes are sequential with syncromesh.

Kurt

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Registered: 23rd Oct 05
Location: Hi
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8th Jul 09 at 22:19

Triptronic?

sand-eel

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Registered: 15th Mar 07
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8th Jul 09 at 22:19

the push/pull boxes can be either the dog box or sequential and also both can have flappy padels as long as there is hydraulics to do it for you.

sand-eel

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8th Jul 09 at 22:21

quote:
Originally posted by Kurt
Triptronic?

tiptronic can either be a manual or automatic gearbox, tiptronic just means fingertip gearchanges.
eg an M3 has a manual box with hydraulics to change it for you, on a car with an autobox it just does the usual but you have control.

john_c20xe

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Registered: 10th Feb 08
Location: Eastbourne, EastSussex
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8th Jul 09 at 22:28

quote:
Originally posted by sand-eel

quote:
Originally posted by Kurt
Triptronic?

tiptronic can either be a manual or automatic gearbox, tiptronic just means fingertip gearchanges.
eg an M3 has a manual box with hydraulics to change it for you, on a car with an autobox it just does the usual but you have control.

or with peugeot they have a manual gear and a wiper motor controlling auto

DizzyRebel

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Registered: 2nd Jan 09
Location: Lincoln
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8th Jul 09 at 22:50

Sequential gearboxes are better for racing as you dont need to use the clutch on the up shift as all the gears are already meshed and spinning at the same time. You still need the clutch on the downshift though.

The whining comes from straight cut gears (reverse is usually straight cut hence the whining) and the advantage of these is that they are much better at handling high torque loads.

ChrisBoom

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Registered: 6th Dec 06
Location: Highland
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8th Jul 09 at 22:53

These type of boxes dont usually last long though do they?

sand-eel

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8th Jul 09 at 22:55

quote:
Originally posted by DizzyRebel
the advantage of these is that they are much better at handling high torque loads.

also you have less gear power loses through the drive

sand-eel

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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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8th Jul 09 at 22:58

quote:
Originally posted by ChrisBoom
These type of boxes dont usually last long though do they?

The gears them selves last as long as any gearbox but on the syncro sequential the syncros needs replaced every so often and on the dog boxes they don't last very long at all as the "dogs" need replaced, they are just lumps of metal that literly get rammed into the output shaft to engage the gear.

sand-eel

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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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8th Jul 09 at 23:00

...well not the actual shaft but a big lump of metal with holes in it at the end that the dogs fit into.

Corsa_Sport21

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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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9th Jul 09 at 06:02

Tiptronic is awesome my 5th gen prelude has it.Only shit thing is it takes about a second to grab the gear once you,ve shifted up.Coming down the box is almost instant tho.

mattk

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Registered: 27th Feb 06
Location: St. Helens
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9th Jul 09 at 07:40

my Punto feels like it has a straight cut 2nd gear, its like stiring a bucket of coal trying to get it in

DaveyLC

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Registered: 8th Oct 08
Location: Berkshire
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9th Jul 09 at 08:00

Sequential boxes are where you shift in sequence, like a motorbike!

Straight cut gears are what make the loud whining noise.

And a dog box generally means its got no synchromesh (you have to double-de-clutch) and to add to confusion there is a Log leg box but this is just to do with the shift pattern being open and over (instead of down) from 1st to 2nd like the shape of a dogs legs funilly enough!

Ellis

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Registered: 11th Sep 07
Location: Aberdeenshire
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9th Jul 09 at 08:30

Is it this Davey, or am I understanding you wrong?

DaveyLC

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Registered: 8th Oct 08
Location: Berkshire
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9th Jul 09 at 08:40

Yep! thats a dog leg

Ellis

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Registered: 11th Sep 07
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9th Jul 09 at 08:48

Woot, I understood something

mattk

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Registered: 27th Feb 06
Location: St. Helens
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9th Jul 09 at 11:26

I knew that BMW did boxes like that, wtf is the point in it?

Ellis

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Registered: 11th Sep 07
Location: Aberdeenshire
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9th Jul 09 at 11:53

I think the idea is that you will be between 2nd and 3rd more commonly, 1st just being out the way as a starting gear - track use I presume.

Corsa_Sport21

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Registered: 13th Apr 08
Location: Leven, Fife. Drives : 205 GTi
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9th Jul 09 at 16:25

I once drove a bus with a dog leg box.

Also Escrot RST's have Dog legs.

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