catastrada Posted March 14, 2014 Share Posted March 14, 2014 We fitted a Sedav gearbox + the Geartronics Flatshift on my car. The Geartronics GCU is connected to my Emerald and evertthing seems to be fine. Now we are in the process of fitting a Sadev gearbox + geartronics on the 2 Rcae CSR of my friends. The point is that they are using the MBE ECU encrypted by Caterham. Does anybody has an exprience of fitting the Geartronics GCU on a CSR260? Is there a pin available on this ECU for "clutch switch"? If not we need to wire the Geartronics GCU to each ignition coil AND to to the 12+ ignition supply. In that case we need to identify the 12+ ing supply, but we don't know where it is Edited by - Catastrada on 14 Mar 2014 20:14:27 Link to comment Share on other sites More sharing options...
Dany Posted March 14, 2014 Share Posted March 14, 2014 hi you should get in touch with olini (iicr) from the french 7 forum. i think is engine is matted to a sadev gearbox and it has the std MBE ecu. maybe i could be helpful cheers Link to comment Share on other sites More sharing options...
catastrada Posted March 14, 2014 Author Share Posted March 14, 2014 You mean Olin, good idea thanks 😶🌫️ Link to comment Share on other sites More sharing options...
James.S Posted March 14, 2014 Share Posted March 14, 2014 I have an MBE with a pin programmed for clutch. It isn't great, we reverted back to manual shifting. The 620 uses a better ECU for this reason. Link to comment Share on other sites More sharing options...
catastrada Posted March 19, 2014 Author Share Posted March 19, 2014 James if I understand what you did, you wired the potentiometer from the gearbox to the clutch switch pin of your ECU and then your ECU was managing the ignition cut strategy*. What we do is wire the potentiometer from the gearbox to a Geartronics flatshaift ECU. This flatshift ECU is using a closed loop strategy to cut ignition. Then the flatshift ECU is either wired to the engine ECU that only does what the flatshift ECU tells him to do (cut ignition / no cut ignition), which means the engine ECU has a clutch switch pin. or wired directly the flatshift ECU to the coils to cut/ not cut ignition, when your ECU is locked as Caterham MBEs are. But now we are sorted, the first CSR 280 race is completed including the flatshaift wiring, I just need to calibrate the flatshift. It will be done tonight *Older engine ECU were not so good in managing ignition cut. More recent ECU including MBEs are now using a clever closed loop strategy too. Link to comment Share on other sites More sharing options...
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