Racelogic Traction Control
Discussion
MPoxon said:
What was your experience of the system on your Cobra? Did the variable part work where you can choose the amount of slip?
you could choose slip amount, full throttle gear change, launch control etc. it all worked, took a while to set up as it needs 4 wheel sensors and was not easy to set properly, so took some time as the speed sensors are like the abs sensor on the diff, and you know how fussy those can be, in the end we used the backs of the wheel studs in the hubs as pick ups for each wheel as it was easy to get a solid mount there. and i think the abs ring on the diff (the cob had a btw diff same as griff)
on the move it was great fun, the sequential cut on injection meant the engine didn't die, it just went down on power till traction was regained
in wet it was very easy to select 5, 10, 20 percent slip and feel the difference, great fun on suitable private roads etc
it did not however prevent me spinning the car off a slipway onto a motorway on the first outing, traction control meant that it was vv easy to put way more power down and let the traction deal with it, till driver error (too much right foot plus 550 ftlb in 1000kg car) meant that i lost the car, when previously i would not have put that much power down so quickly. my error, nothing wrong with traction control, just excess rate of acceleration over road conditions meant i got caught on a road i knew well, but misjudged my rate of speed (rather tq delivery to contact patch) into the curve and lost the back end and no amount of traction control works with a car going sideways (then backwards)!!
a proper brown trouser moment which resulted miraculously in no damage to anything other than my ego
so it was good, but driving style and expectation of the systems ability to keep you "safe" definitely needed to be moderated. you couldn't treat it like a modern 150hp daily driver and just floor it pretty much anywhere and get away with it, you still had to be on the ball.
hope that helps
Edited by SteveSPG on Monday 6th January 17:16
Edited by SteveSPG on Monday 6th January 17:17
Cheers for that Steve, very helpful.
I did suspect that it would not be idiot proof with that much power, it does sound like a great system though. It is probably not worth it on my standard Griff but if I were to go forced induction I would certainly look at including this in addition to the usual bigger brakes. suspension etc.
I imagine with a cob it made it much easier to actually get the power down without spinning up all the time. One of my friends used to have a replica cob 427 and it was impossible to drive in the wet with the classic racing tyres, even the slightest bit of throttle would upset it.
I did suspect that it would not be idiot proof with that much power, it does sound like a great system though. It is probably not worth it on my standard Griff but if I were to go forced induction I would certainly look at including this in addition to the usual bigger brakes. suspension etc.
I imagine with a cob it made it much easier to actually get the power down without spinning up all the time. One of my friends used to have a replica cob 427 and it was impossible to drive in the wet with the classic racing tyres, even the slightest bit of throttle would upset it.
on that cob i ran IIRC 18 inch 295 width ........something yohohama and sticky can't remember which ones,
other cobs i ran 15 inch avon crz i think which are a vv sticky speed rated compound,
both were fine at good speeds in the wet, but it was always the tq delivery that caught me at low speeds. the 550hp tq cob delivered (from memory) something like 400 ftlb at 2500 rpm, so even though it sounded lazy it was a lot of power low down, and v easy to put too much down.
the wider widths of course meant that the car getting light over even small amounts of standing water were high, so had to use caution in the wet.
but in the dry, you really had to provoke them to slip, they were both GD and had good suspension setups, and getting the power down wasn't hard
other cobs i ran 15 inch avon crz i think which are a vv sticky speed rated compound,
both were fine at good speeds in the wet, but it was always the tq delivery that caught me at low speeds. the 550hp tq cob delivered (from memory) something like 400 ftlb at 2500 rpm, so even though it sounded lazy it was a lot of power low down, and v easy to put too much down.
the wider widths of course meant that the car getting light over even small amounts of standing water were high, so had to use caution in the wet.
but in the dry, you really had to provoke them to slip, they were both GD and had good suspension setups, and getting the power down wasn't hard
Edited by SteveSPG on Monday 6th January 17:29
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