Paulo Posted July 30, 2003 Share Posted July 30, 2003 Is this any good to you all : http://www.efitechnology.com paul Link to comment Share on other sites More sharing options...
EFA Posted July 30, 2003 Author Share Posted July 30, 2003 Richard, You need an MBE 970 ECU which has a gear lever position input AND an ignition cut input in order to get this to work better (but not necessarily properly). Marius, It must be a huge knob you have! How much is the load cell £££??? 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...
Marius Posted July 30, 2003 Share Posted July 30, 2003 It´s indeed a huge knob I have..tehe.... 😬 Honestly, it´s not that big, the nylon one. I haven´t done it yet but try searching the web for inboard pictures of the curretn german DTM series. They are all running these cells with a knob around it and it doesn´t look too big. I´ll try too find a picture, too. Marius Link to comment Share on other sites More sharing options...
Joost M Posted July 30, 2003 Share Posted July 30, 2003 Hi Marius, Just for you! 😬 DTM cockpit I DTM cockpit II The next one is a special one for you (just look at the knob, not the girl). DTM cockpit III Best regards, Joost Edited by - Joost M on 30 Jul 2003 19:34:54 Link to comment Share on other sites More sharing options...
Chelspeed Posted July 30, 2003 Share Posted July 30, 2003 Arnie - all the 941 family of ECU's have flat shift but with a single delay setting for all gear changes. The only area where the latest software, which is standard on the 970 and may or may not be back fittable to older 941's, is that you can set a different delay for each change. For this you need a gear position input to the ECU, if you are happy with a single delay setting you just need the gearchange "switch". With a sequential does the speed of one gear change differ significantly from others? Link to comment Share on other sites More sharing options...
MJS Posted July 30, 2003 Share Posted July 30, 2003 Marius, It would appear from the data on the .pdf that the unit has an integral amplifier giving the 1 - 4V O/P. There is nothing special about a strain gauge load cell working in both directions as the strain pattern is simply reversed if the load is reversed. The load cell you have been supplied with has a 4V offset therefore, when load is applied which would cause the signal to be >4V, the amp saturates and no change of signal is recorded. The offset can be set to whatever is required, so it would be possible to have the offset in the centre of the amp range so that the load cell would work in both directions. It is perfectly feasible to strain gauge the gearlever itself and fit an integral amp with the required gain and offset, as this is common practice in motorsport. Matt. Link to comment Share on other sites More sharing options...
EFA Posted July 30, 2003 Author Share Posted July 30, 2003 With a sequential does the speed of one gear change differ significantly from others? Having taken the lid off mine and studied how the seq mechanism works I think there will be a significant time difference to move between some gears so I think the variable "gear position" based delay is a key requirement. Does anyone have any ideas how to fit a switch to the lever actualted by the movement for downchange - I have heard a central locking solenoid can be used to blip the throttle on downchanges. All that is required is another timer to activate the solenoid - completely removing the need to heal and toe 😬 😬 😬 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...
debushau Posted July 30, 2003 Share Posted July 30, 2003 I suppose there's also Electromotive - have no idea whether they're good, bad or indifferent but it's a lower cost alternative to Motec/Pectel. http://www.electromotive-inc.com/index.html Link to comment Share on other sites More sharing options...
Marius Posted July 31, 2003 Share Posted July 31, 2003 Arnie, please give me a ring on 0049-241-30837 or just let me know your number, I´ve got another idea for up/downshifting without a load-cell. Marius Link to comment Share on other sites More sharing options...
I reply to every thread Posted July 31, 2003 Share Posted July 31, 2003 "What ECU?? MBE, Motec, DTA, OMEX or Emerald ?" Dunno but "as my MBE 956 is getting a bit out of date......" no doubt it'll be at a knock down price when it comes on the market. Just fufilling your expectations of me. Link to comment Share on other sites More sharing options...
New Barbie Posted July 31, 2003 Share Posted July 31, 2003 quote: "completely removing the need to heal and toe 😬" Are you not in danger of ending up re-inventing the automatic gearbox ? Much as I'd like a sequential, I can't help thinking that some of the fun is being lost if all you do is mash you right foot to the floor and flick the lever when the revs cause a certain light to come on. I know it's a bit more than that but you get the point I trust....... Link to comment Share on other sites More sharing options...
edmandsd Posted July 31, 2003 Share Posted July 31, 2003 I had the same fear but once you do it you'll never look back - It's a real buzz and the powershift brings a smile to my face every time I use it. Although the strain guage was v.expensive it's probably the cheapest performance i've bought for a long time. A sequential gearbox on it's own is a considerable improvement over an H pattern box but a powershift really highlights the advantage. Once fitted you don't have to use the powershift - Mine's turned on permanently but the ignition cut is so short that you don't notice it with slow changes. You can also still use the clutch with a sequential if you really want to. I may now even look for an airshifter linked to a button on the steering wheel so I don't have to take my hands off the wheel to change gear and hence concentrate on keeping the car as straight as possible. Home of BDR700 Link to comment Share on other sites More sharing options...
EFA Posted July 31, 2003 Author Share Posted July 31, 2003 Marius, I'm thinking Idle Control Valve??? 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...
Marius Posted August 1, 2003 Share Posted August 1, 2003 tooooooot.......wrong ! 😬 Gimme a call, bit difficult to explain, takes too long. Marius Link to comment Share on other sites More sharing options...
Richard Ince Posted August 1, 2003 Share Posted August 1, 2003 From what I read here it appears that the MBE 970 is the best (MBE) ECU for flat shifting with my Quaife box. However I understand that my current MBE 967 will also support this. Has anybody got experience of using a 967? I understand that a 970 needs major changes to the wiring loom to fit to an R500. Link to comment Share on other sites More sharing options...
EFA Posted August 1, 2003 Author Share Posted August 1, 2003 Richard, 970 is the best, 967 will do it but does not able you set a variable ignition cut depending on the gear you are changining into. 967 to 970 swap should not be physically too hard, but it would likely require a full remap of your engine. 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...
MJS Posted August 1, 2003 Share Posted August 1, 2003 Edmundsd, Just out of interest, how much did you pay for your "strain gauge". Was it an off the shelf load cell, or did you have something specifically made? Matt. Link to comment Share on other sites More sharing options...
edmandsd Posted August 1, 2003 Share Posted August 1, 2003 Off the shelf designed to fit on the gear lever - £375 plus Vat from the Strain Guage Company - I think you're paying for accuracy/reliability in the calibration to be honest. You wouldn't notice it on the gear lever either unless you knew what you were looking for. Home of BDR700 Link to comment Share on other sites More sharing options...
peterg Posted August 18, 2003 Share Posted August 18, 2003 Arnie, there's a Motec M8 plus some sensors etc. for a grand on http://www.racecarsdirect.com/ Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now