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help ive just purchased a tamiya twin detonor from fleabay and as I have previously always used the tamiya rs 540 sport tuned black can motors in single motor cars ive just puchased 2 x of this motor but while brousing around the web ive noticed a few people saying you cant use this motor in a twin motor car if one needs to wired reverse due to the gearbox layout as they are advanced in forward mode so one motor will run faster forward than the other in reverse mode so in theory the from wheels will spin slower than the back. is this correct ? your assistance in this matter with recommendations of motors that i could use will be grately appreciated. ill update my photos on the website as soon as it arrives and i start tinkering. thanks for info but im getting now even more confused, people are saying that the older sport tuned motors are 27 turn with advanced timing and the newer ones are 23 turn with zero timing any ideas other than spinning them up in one direction then the other and seeing if i can hear any difference in noise (rpm) ? ive just heard from the supplier of these motors and he says that all though the gearboxes are 180 degrees out they actual motors both run forward in forward mode from the speed controller !!! the plot thickens well an update , thanks for all the advice , ive managed to find time to strip both gearboxs down today to fit the sealed bearings to them , 24 bearing later i finally got chance to add the mentioned tamiya rs540 sport tuned motors with upgrade 20t pinions from the standard 18t ones. well everybody is correct as well as myself that the front motor runs backwards (no advance timing) as expected when the whole box is 180 degrees rotation but ive had a few test runs and all though the front wheels in theory turn slower that the rears it goes alot better that stock motors and pinions but time will tell as i presume the rear motor is under higher load pushing it forward than the fronts, im no racer just enjoy the usual bashing around with my 9 year old son and his slightly modified king blackfoot ,bless him he did his 1st battery changover all by himself last night without any prompting on the order you switch the rx and tx off and on so proud dad am I !!!! while stripping the box's id noticed the previous owner had a 18t pinion gear to front box mounted in the 20t mounting holes which surely isnt good but the primary gear following the pinion gear wasnt stripped so thats a bonus eh !!!! list of mods to my twin detonator will be when they all arrive are. twin tamiya rs540 sport tuned motors 24 x 1150 sealed metal ball bearings to gearbox and axles 2 x 20t pinion gears cva short shock kit to front and rear 2.4ghz spektrum tx and rx 8t esc wired for both motors turnigy tgy-1501 17kg/cm high torque metal geared steering servo running my usual 4500mah ni-mh batteries which last quite a while for 2 motors. paul