Julian Thompson Posted May 24, 2003 Share Posted May 24, 2003 Thinking about buying a sequential box for K series. What's the one like in the demon tweeks book? It is a Quaife one which will according to the info in the catalog fit straight into the 7 with no mods. Is this true? Will this be reliable and easy to use or are they a pain in the arse? Link to comment Share on other sites More sharing options...
Paul McKenzie Posted May 24, 2003 Share Posted May 24, 2003 Margin on Road Angels must be good. Wish it was on Autosol Paul Link to comment Share on other sites More sharing options...
Chelspeed Posted May 24, 2003 Share Posted May 24, 2003 I like it. Mines a 5 speed Quaife sequential dog box. It wasn't a direct swop but pretty easy, some mods to the stick needed. Others think it's less refined than some other sequentials but I havn't found this at all. I'd try it first. What box are you replacing? Link to comment Share on other sites More sharing options...
Julian Thompson Posted May 25, 2003 Author Share Posted May 25, 2003 "Margin on Road Angels must be good." Oh yes, just great Paul. And those seven tubes on Autosol went for £200 a tube so that'll help too..... Anyhow. I'm thinking of replacing the 6 speed box, for no other reason than I like the idea of a sequential change. What other boxes can I choose from and why? Link to comment Share on other sites More sharing options...
Harry Flatters Posted May 27, 2003 Share Posted May 27, 2003 Ju, Dave Edmands has co-developed a seq box which I believe is now on sale. Supposed to be lighter than the Quaife offering and I think around the same price. *arrowright*Harry Flatters *arrowright* AKA Steve Mell of Su77on Se7ens and Joint AO - Surrey Link to comment Share on other sites More sharing options...
Marius Posted May 27, 2003 Share Posted May 27, 2003 Got the 6speed sequential Quaife dog box in since three weeks. It´s rough, noisy, slightly more heavy, only minor mods to the chassis (one hour work)and it doesn´t make you faster BUT . . . . IT`S BRILLIANT FUN! !!!! 😬 If you buy one get it from Montgomery Motorsport in Irland, he´s doing the best prices on them, definitly. Much less than DT. You can find some more pictures on www.mog-racing.de about the installation of the gearbox. Marius Link to comment Share on other sites More sharing options...
edmandsd Posted May 27, 2003 Share Posted May 27, 2003 I'm not getting into this debate again.............time will tell, trust me Home of BDR700 Link to comment Share on other sites More sharing options...
EFA Posted May 27, 2003 Share Posted May 27, 2003 Julian, I almost second Marius's comments, but I do think you get faster changedowns where you would normally move across the H shift. With the Seq you do not need to worry about getting the wrong gear! Yep its noisy, but the noise is like Led Zep - great lound but maybe an aquired taste.... Fitting requires simple mods to the lever, and the Caterham needs the version with the std selector position , not the one designed for Westies. My only other comment is that it begs to be thrashed, and driving without working it hard does lead to missed gears. When thrashing it though, I haven't yet missed a gear, and that is perhaps when its best not to. Go on.......buy one..... Don't get the overdrive one either or you'll need a 4.44 diff! Fat Arn Visit the K2 RUM website See the Lotus Seven Club 4 Counties Area Website here Edited by - Fat Arnie on 27 May 2003 23:50:18 Link to comment Share on other sites More sharing options...
Julian Thompson Posted May 28, 2003 Author Share Posted May 28, 2003 OK I'm excited; Dave Forgive me but I don't know where you ended up last time? Perhaps you could let me know which thread to read + a teeny "advert" for your box, just for me? Arn Sounds good, do you know how much heavier it is since I don't like heavy things ? Link to comment Share on other sites More sharing options...
Marius Posted May 28, 2003 Share Posted May 28, 2003 My installation: 6speed seq. 6th gear overdrive 0.93 Differential 3.92 ACB 10´s 13" gives you a top speed of 219km/h at 8.000rpm in 6th. Marius Link to comment Share on other sites More sharing options...
EFA Posted May 28, 2003 Share Posted May 28, 2003 Marius, I found the installation you have slowed the car down as the short gears were taller. PC will now tell everyone it makes do difference, but I reserve the right to argue indefinatley. Julian, On the weight thing (in kgs).... Caterham 6 Speed box, with oil, hydraulic release bearing assembly, quickshift and R500 gearknob 34.15 Quaife 6 speed sequential, selector mechanism, hydraulic release bearing assembly, no oil 36.66 Weights measured on the wifes best digital scales..... Fat Arn Visit the K2 RUM website See the Lotus Seven Club 4 Counties Area Website here Link to comment Share on other sites More sharing options...
edmandsd Posted May 28, 2003 Share Posted May 28, 2003 Julian, Converted racing sequential transaxle. 5 speed currently plus reverse gear. Billet aluminium casing (Soon to be cast) S156 steel gears i.e. Not the cheap Quaife 'cream cheese' variety. Choice of 35 gear sets Choice of drop gears Only 20 kgs 260 ft lb torque capacity minimum i.e. Much higher than Caterham 6 speed £3K + Vat Excludes linkage (HTR made mine) and requires longer slider prop @ around £200. I've made a simple mod to my car allowing the box to be removed through the car in 15 mins. I've fitted a strain guage to my lever which is linked to my Motec ECU allowing powershifts. Puts up with my c 300 bhp BDX engine and sub 6 second 0-100 mph times no problem. To be honest it makes me cringe to even think that the Quaife box is in the least bit comparable with this 'proper piece of engineering'. Home of BDR700 Edited by - edmandsd on 28 May 2003 21:08:46 Link to comment Share on other sites More sharing options...
TorAtle Posted May 28, 2003 Share Posted May 28, 2003 Forgive me for a silly question, but isn't a transaxle a replacement for a diff - ie a combined gearbox/diff Is this the case here? Link to comment Share on other sites More sharing options...
edmandsd Posted May 28, 2003 Share Posted May 28, 2003 It utilises the same proven gear set/sequential mechanism as a transaxle but is converted to an inline application by losing the diff and adding a pair of drop gears basically. Mike Endean of Xtrrac fame did the same thing successfully with some Hewland boxes a few years ago. Home of BDR700 Link to comment Share on other sites More sharing options...
TorAtle Posted May 28, 2003 Share Posted May 28, 2003 Ok. So there isn't room for a transaxle in the rear of a Caterham? Link to comment Share on other sites More sharing options...
edmandsd Posted May 28, 2003 Share Posted May 28, 2003 ...I didn't say that Home of BDR700 Link to comment Share on other sites More sharing options...
Julian Thompson Posted May 28, 2003 Author Share Posted May 28, 2003 Dave Many thanks. 20KG 😬 This is the one then. I love light things! The only slight issue I now have is that we've just seen a new house which will require a wodge of stamp duty ☹️ so I need to be gentle with my spending promises over the next few weeks until I know whether we're moving! How long would it take to get one should I choose to go ahead? Do you have any pix? Cheers Link to comment Share on other sites More sharing options...
Martin Plant Posted May 29, 2003 Share Posted May 29, 2003 You should have just got that BEC thing in the first place dude You know it makes sense. Martin www.caterhamblackbird.com Link to comment Share on other sites More sharing options...
Julian Thompson Posted May 29, 2003 Author Share Posted May 29, 2003 Looks that way doesn't it !!!! Link to comment Share on other sites More sharing options...
edmandsd Posted May 29, 2003 Share Posted May 29, 2003 Julian, My home email is david@edmands.fsbusiness.co.uk Drop me a line (so I can get your email address) and I'll attempt to get you some pictures one way or another. Home of BDR700 Link to comment Share on other sites More sharing options...
edmandsd Posted May 31, 2003 Share Posted May 31, 2003 On Friday I had a powershift/flatshift system provisionally set up on my sequential box, using a strain guage on the lever linked into the Motec ECU (M48 professional). A system such as this really highlights the advantages of a sequential box over a conventional H pattern one (dog or synchro). The shift times now vary between 30 and 50 milliseconds depending on which gear change it is. I have to say that the sound and speed of change is simply staggering . Although the strain guage is bloody dear at £370 plus Vat this is a cheaper alternative to buying complete after market systems Can't wait to get it on the drag strip as initial calculations suggest that this will save me about 0.25 secs 😬 Home of BDR700 Edited by - edmandsd on 31 May 2003 17:56:42 Link to comment Share on other sites More sharing options...
Julian Thompson Posted May 31, 2003 Author Share Posted May 31, 2003 Thanks Dave. My mail address is v11ufo@btinternet.com and I'd love some photos. Do you have to modify the transmission tunnel to fit the box? Link to comment Share on other sites More sharing options...
edmandsd Posted May 31, 2003 Share Posted May 31, 2003 My box required a small 1 inch square modification to the gear lever cover. In 6 weeks the 'new' box with the sequential mechanism running along the top of the box will require no such mod. I'll get you some photos shortly. Link to comment Share on other sites More sharing options...
Chelspeed Posted June 1, 2003 Share Posted June 1, 2003 Dave - got any details of the strain gauge knobby? How tall is it? I've been trying full throttle shift with a button built into the knob, grab the knob and dab the button, but it's not quite the same as having it all in one. Link to comment Share on other sites More sharing options...
edmandsd Posted June 1, 2003 Share Posted June 1, 2003 It's from The Strain Guage Company Graham. It's about 3 inches long and 1 inch diameter (It's got a titanium look to it and you'd never know what it is unless you knew in advance). Richard at Powerstation will sort you out one and set it up if req'ed. He knows you - you're only down the road apparently....small world Home of BDR700 Link to comment Share on other sites More sharing options...
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