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Motec traction vs RLTC?


Pete

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How does the traction control in the Motec ECU stack up against Racelogic?

I'm just thinking rather than pay a quarter of the amount of an ECU on a RLTC system, I'd be better putting the money towards the Motec?

 

Anyone had any comparative experience of these?

 

Cheers.

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Can't answer that but thought I'd mention that the unlocking of additional features costs you £££'s. The only unlock features are the ones you need to run an engine.

Bastards! So they give you all the bits - but won't let you play unless you hand over another wodge of cash :(

I assume it's just the software that differs, not the ECU?

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I think Alex may be correct there, not 100% sure. I've just dowloaded the software for the M800 and the PDF file on it and it's all on there. Whether or not it would work real time is another thing. Worth finding out though on whether the charging bit is for the hardwiring of the abs sensors into the ecu or it actualy harware locked.

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How does the traction control in the Motec ECU stack up against Racelogic?

I'm just thinking rather than pay a quarter of the amount of an ECU on a RLTC system, I'd be better putting the money towards the Motec?

 

Anyone had any comparative experience of these?

 

Cheers.

 

IMO it's already better, and is a work in progress, so it's constantly being refined. You only need the base ecu, feutures are password enabled when you need them (and pay for them.... ;)) Have you got demo software? You can look at it at ftp://ftp.chriswilson.tv/motec

 

the m800* file is the latest M800 software

 

More info at http://www.motec.com.au

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When I had my Motec installed, the cost included the traction control system and Owen Development told me that I would be able to sell my RLTC but after testing the car, their opinion was that the RLTC was better than the Motec version.

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Better in what way CJ? I don't use it myself, so can only go by what people who have used both can tell me, and I am getting conflicting opinions now (How unusual.... :)) I was sceptical of RL until I tried it, i think it works well, i have only been a passenger in a Motec'd TC set up, and it appeared to do all the right things, without the hassle of yet another gizmo box and plethora of wires.

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Better in what way CJ? I don't use it myself, so can only go by what people who have used both can tell me, and I am getting conflicting opinions now (How unusual.... :)) I was sceptical of RL until I tried it, i think it works well, i have only been a passenger in a Motec'd TC set up, and it appeared to do all the right things, without the hassle of yet another gizmo box and plethora of wires.

TBH Chris, I didn't really question him that deeply but can certainly find out from Mark at Owen and let you know why he felt it was better.

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Interesting stuff. Ok - Thanks to the advice on here I've decided there's no need for me to panic and go for the group buy that's happening for the RLTC. I reckon I'll be better off saving for the spangly M800 which will be the savour of all things ever.

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Guest Terry S

Can't say for the Motec, but I had the autronic one set up and when I had it working properly it was excellent. You can programme different aspects for each gear, which to me is a big plus.

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Can't say for the Motec, but I had the autronic one set up and when I had it working properly it was excellent. You can programme different aspects for each gear, which to me is a big plus.

 

how did it know what gear you were in? engine speed vs tyre speed?

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Yes, this is a BIG help, you don't need something as aggressive in the higher gears, good point.

 

why is that? surely slip is slip no matter how fast you are going? RLTC is as aggressive as the slip is until the slip is under control, that stratergy will work no matter which gear you are in.

 

genuinely interested :)

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Well, you might WANT some wheel spin in first gear, to get off the line, but not want as much at 60 miles an hour, or vice veras, for drifting, say?

 

On my Zeus the Motec knows what gear it's in from the Motec dash, which has a gear position pot in the gearbox, so if it's in 6th the dash shows a big figure six, and ecu also gets this info down the CAN cable. Otherwise i suppose and ecu could work it, as you say, from engine and wheels speed.

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Pete, if you are interested, I can put you in touch with Mark at Owen who is offereing a very good deal on the Motec supply, fitting and mapping.

Cheers, but it won't be for a while yet I'm afraid :( Take me a while to save up the pennies. Chris is only up the road too and I trust him to sort me out.

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Well, you might WANT some wheel spin in first gear, to get off the line, but not want as much at 60 miles an hour, or vice veras, for drifting, say?

 

i suppose RLTC does something like this with the launch control settings

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Guest Terry S

Eyefi the Autronic uses the wheel speed sensors and then you set the perameters into the ecu until it knows which gear it is in all the time. Then you tune the TC around it. It can be a bit fidly but once set is very good indeed. Downside is that you simply dont have the dash dial like the RLTC.

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Similar deal with the AEM.

 

It calculates gear by ratio's between 2 signals (possibly vehicle speed and revs)

 

The traction control uses engine acceleration rate. You tell it that if the engine accelerates faster than X then the wheels must be spinning. You can then trim that value for different gears.

Once the TC is in a "traction loss" state it can apply fuel cut, ignition retard, ignition cut in user definable amounts over a user definable amount of time and then removes that parameter in a similar manner untill the TC condition is no longer met.

 

Incidentally that's the same system as modern F1 engines use, however they don't bother with fuel cut/ignition retard, and just go straight to ignition cut.

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Presumably all these ECU based systems only use the RPM and speed signals to decide if wheel spin is occurring. The advantage of RLTC is that it uses the individual wheel speeds from the ABS sensors. So it can tell when you are cornering, and allow less slip than when you're in a straight line, which the ECU based ones can't (unless they also have the ABS wheel speed sensors wired in).

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