5 speed or 6 speed

5 speed or 6 speed

Author
Discussion

carphotographer

Original Poster:

500 posts

195 months

Monday 25th November 2013
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Couldn't actually find an answer so what's better to have a 5 speed or 6 speed gear box ?

I'm considering in buying a Caterham, or another Elise, I've had two already and love the Elise but thought I'd try a Caterham.

It would be interesting to hear from people who've had both


framerateuk

2,730 posts

184 months

Monday 25th November 2013
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There is no single answer. They both have their plus and minus points.

I've only driven a 6 speed. The ratios are nice and close, it's brilliant on a trackday and great fun on a twisty b-road. It's not ideal on a motorway as the 6th gear ratio is the same as 4th on the 5-speed, meaning you end up doing about 3500rpm at 70mph. A 5 speeder should settle down at lower revs and give you better economy and a quieter ride.

I think on the likes of a Duratec, with so much torque available, the 6 speed box is less necessary. But on the Sigma and K-Series, lots of people prefer the closer ratios of the 6.

grenpayne

1,987 posts

162 months

Monday 25th November 2013
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What Andy says is true, it depends on which engine you choose and how you want to drive the car. Track/Blat toy with a K Series go for the 6 speed, Touqey Duratec or taking the car touring, probably the 5 speed. The standard rule of thumb is that 6th gear in the 6 speeder is the same as 4th gear in the 5 speeder. You pays your money etc biggrin

ghibbett

1,900 posts

185 months

Monday 25th November 2013
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As has been mentioned above but only to add that the 5 speeder has a short first gear which, quite frankly, is a bit of a pain.

Edited to add: Having hired a 6 speeder, I have subsequently hired a 5 speeder. Here's what I wrote after the hire:

Ghibbett said:
Gearbox:
This was probably my No1 'worry'. A cruddy old Ford Sierra gearbox with ratios designed for towing caravans. I mean how rubbish is that?! Well not that rubbish actually. The gearchange is extremely sweet, the 2/3/4/5 ratios are actually very good (no doubt helped along by the torquey Sigma) but 1st is definitely too short. Unless you're planning a quick getaway, 2nd is fine for pulling away - I even accidentally pulled away in 3rd without issue. Prior to this hire, in my mind I would only consider a 6 speeder, however now I would definitely consider a Caterham with a 5 speed 'box, especially when mated to the Sigma engine.
Edited by ghibbett on Monday 25th November 17:41

CaterBram

126 posts

175 months

Monday 25th November 2013
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Unless like many the short first has been replaced with a long first :-)

V7SLR

456 posts

186 months

Monday 25th November 2013
quotequote all
ghibbett said:
As has been mentioned above but only to add that the 5 speeder has a short first gear which, quite frankly, is a bit of a pain.

Edited to add: Having hired a 6 speeder, I have subsequently hired a 5 speeder. Here's what I wrote after the hire:

Ghibbett said:
Gearbox:
This was probably my No1 'worry'. A cruddy old Ford Sierra gearbox with ratios designed for towing caravans. I mean how rubbish is that?! Well not that rubbish actually. The gearchange is extremely sweet, the 2/3/4/5 ratios are actually very good (no doubt helped along by the torquey Sigma) but 1st is definitely too short. Unless you're planning a quick getaway, 2nd is fine for pulling away - I even accidentally pulled away in 3rd without issue. Prior to this hire, in my mind I would only consider a 6 speeder, however now I would definitely consider a Caterham with a 5 speed 'box, especially when mated to the Sigma engine.
Edited by ghibbett on Monday 25th November 17:41
The 5-Speed was actually the close ratio 'box from the XR4i.

I've had Caterham's with both. On track, any power but particularly if the car has a limited amount of power, the 6 speed is brilliant. On the road for anything approaching 200bhp upwards and with plenty of torque the 5 speed will save your sanity.

mikecocker

2 posts

126 months

Monday 25th November 2013
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Has anyone any experience of the close ratio gear kits used with the sigma engine. I'm interested for track use and because the 6 speed box is quite expensive, something like the quaife kit with a long first and short fifth seems a reasonable alternative (I think!)

carphotographer

Original Poster:

500 posts

195 months

Monday 25th November 2013
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cheers guys

JeffC

1,686 posts

212 months

Monday 25th November 2013
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I have run both 5 and 6 speed in big power duratec cars and much prefer the involvement of the 6 speed,personally wasnt a fan of the 5, I found I rarely needed 5th on track where as with the 6th I use all the pegs and feels involved to drive fast, if there is a downside to the 6th its as said above it is a touch revy when cruising as has a 1.1 ratio in 6th however a 3.3 diff as fitted to the Csr260 then gives the best of both worlds.

BertBert

19,025 posts

211 months

Monday 25th November 2013
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It's personal preference, but I love the 6-speeder. I don't buy the cruising argument much for the 5-speeder either. Cruising at 80 in a 7 is not a quiet experience and deserves hearing protection just from the wind noise alone. So a few extra revs on the engine seems immaterial to me. But you should try both.
BErt

sjmmarsh

551 posts

220 months

Monday 25th November 2013
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... And my mother in law's 1.4 Corsa revs at 3,500rpm when doing 70 - The same as my CSR. (It gets there a bit slower though!)

Steve

tomwoodis

570 posts

184 months

Tuesday 26th November 2013
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Agree with the others. It completely depends on the engine and the most common mode of use for the car. If its predominantly a track car then the 6 speed makes sense irrespective of engine choice. If its a car for the road then the 5 speed starts to make sense, particularly in the more powerful and torquey cars such as the Duratec.

The SuperSport (sigma 140) and Supersport R (180) both have a 3.9 sprint ratio diff meaning that the 5 speed works really rather well. The 3.6 diff being more typical of the older cars I believe.

The comments about 1st gear are true however but the good news is its rather a pointless gear to use (at least in the SuperSport R) as you can pull away quite happily in 2nd with no ill effects.

Mine feels great on the road.

Tom

V7SLR

456 posts

186 months

Tuesday 26th November 2013
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tomwoodis said:
The SuperSport (sigma 140) and Supersport R (180) both have a 3.9 sprint ratio diff meaning that the 5 speed works really rather well. The 3.6 diff being more typical of the older cars I believe
As standard a 3.92 ratio is used with the 5 speed, 3.62 with the 6 speed.

Dick Seaman

1,077 posts

223 months

Tuesday 26th November 2013
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I have the 5-speed on my Supersport (Sigma 140) and I think it suits the power delivery very well for the road. Perhaps a more peaky power plant (K series?) would prefer the 6-speed, but the Supersport standard package (5-speed + Sigma) feels well balanced.

RGambo

849 posts

169 months

Tuesday 26th November 2013
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I have a supersport with 5 speed. It should be noted that the ratios in the supersport 5 speed is not the same as the roadsport 'box ( well that is what I was told by caterham)

RGambo

849 posts

169 months

Tuesday 26th November 2013
quotequote all
I have a supersport with 5 speed. It should be noted that the ratios in the supersport 5 speed is not the same as the roadsport 'box ( well that is what I was told by caterham)

BigCol

202 posts

283 months

Tuesday 26th November 2013
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I seem to remember being told this time last year when I spec'ed my SuperSport that they were being supplied with a standard ratio 5-speed and a different ratio diff to give a similar overall sprint experience of a close-ratio 5-speed gearbox and a standard diff. Think it was a pragmatic response to supply issues.

tomwoodis

570 posts

184 months

Tuesday 26th November 2013
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Agreed, I don't believe there is anything special about the ones currently fitted. The diff ratio certainly helps though.

downsman

1,099 posts

156 months

Tuesday 26th November 2013
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My Roadsport 125 with wide ratio 5 speed and 3.92 diff, is a great package for road use.
The torque band is wide enough not to need closer gears, and 5th really does make a difference when I need to cover some miles on dual carriageways.

I completely agree 1st is to low and never change into it once moving, when it needs a rebuild I'll change it but not before.
On track it is a hoot, but not particularly fast, Goodwood only requires 3rd and 4th biggrin

kenny.R400

1,212 posts

240 months

Wednesday 27th November 2013
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As others have said there is no best, it depends on your own personal taste and to some degree the engine that is in the car.

Here's mine and only mine view.

I've now had all the H pattern boxes in my various 7s, currently running the Swiss spec 6 speed (still don't know what that meanssmile)

If buying second hand you can't spec a box, you simply buy the car you like that's in budget.., if it's a box you don't like try to do the deal to take in a replacement cost for your preferred box,if new then that's a different matter.

Worst box by a mile was the standard offering Ford 5speed with its "get me going" first.............a real PITA having to snatch second at 6.483 mph.

Both six speeders have been very reliable, nice to use and as other posters have said give a nice choice when driving....there is always a right gear.
My only worry has been the horror stories regarding them which has always been on my mind and also the noises they make which I used to find disconcerting.......unlike any 5 speeder I've had I've found myself doing regular oil changes on them and cossiting them that bit more......but as I say no issues so far.

However, and here's where I get shot down in flames and made to stand in the cornerbiggrin

My favourite all time box is the Quaife 5 speed pro box.......and for a higher powered car fitted with the 2.04 first............just on 60mph is possible in first (diff permitting) with this set up.......magic.

I also love the straight cut option..........People will tell you it's "too noisy"...........sure you hear the noise that straight cuts do, reassuringly mechanical........but that soon vanishes at 40mph as wind and induction knock it into 3rd place in the noise stakes.......it's inaudible over all that racket.

It's great trundling through the village at 30mph sounding like a real 1970's clubman racer though...........lovely mechaincal whine!!!!!

For long motorway journeys I can't comment........as in a 7 I avoid them like the plague.