Drift data logging?

[chip-3door]

Has anyone ever datalogged drift angle vs front wheel speed vs rear wheel speed against time, and is prepared to publish the results?

Or even just front and rear wheels without the drift angle would be moderately useful

[Chris_200SX]

would you not get that with the drift box??

[driftpromotion]

What do you want to achieve with these measurements?

Measuring the speed of the wheels isn't going to do you much good.

Actual vehicle speed would be more useful.

[chip-3door]

Originally Posted by Chris_200SX

would you not get that with the drift box??

No you wouldnt, it doesnt do the wheel speeds.

[chip-3door]

Originally Posted by driftpromotion

What do you want to achieve with these measurements?

Measuring the speed of the wheels isn't going to do you much good.

Actual vehicle speed would be more useful.

LMAO @ you trying to tell me what will or wont help me when you dont even know what Im trying to work out.

I want to know the relative speeds of the driven and undriven wheels at different angles for different cars, to see the percentage slip on the rear wheels.

Ideally we'd like to know the steering angle as well, but I realise to achieve that im going to need telementary adding to the steering rack which no one is likely to have already.

[MJG]

I doubt anybody has both front AND rear wheel speed. Most cars would just have the gearbox or diff rear wheel speed sensors. I think it's something you're going to have to try yourself

[chip-3door]

Yeah, I just figured it was worth an ask, didnt actually expect to get an answer, but worth a try!

[Alecsh]

Couldn't you use ABS sensors for speed measurement? they return pulses as the wheels turn..

[chip-3door]

Yep, ABS sensors would be perfectly valid, I know how to do it, I just havent done so yet so wondered if anyone else had, especially if (unlike me, lol) they are actually bloody good at skidding

[suprmek1]

Ilf u wana fund it ill get hudsons skyline along and it could all be set up. Why do you want it????

[Mighty_Mini]

theres a 340 in the project section whose fitted a steering angle sensor, i believe

[Polo]

Originally Posted by chip-3door

LMAO @ you trying to tell me what will or wont help me when you dont even know what Im trying to work out.

No need to be so rude!!!! he was asking what you want the mesurments for!

Its easily done, just dont see the point TBH, what can you gain from it? if your not going fast or got a shallow angle your weak, thats all you need to know, more manfoot and balls normaly sort this issue.

[drifter r32]

Il drift by you run really fast and you can measure angle n speed

[Dogs Danglies]

A relatively easy way to get the wheel speeds (but without drift angle), is to use bicycle trip computers, some of them are crazy accurate (some kits cars use them Westfield etc) I had one for my Golf, very easy to install, you just need to make a little bracket that comes off the suspension/brake caliper, and hold one sensor near the inner edge of the wheel, and glue and gaffer tape the other part of the sensor to the wheel. You can also mount them off driveshafts etc if easier.

[Jak]

Originally Posted by Polo

more manfoot and balls normaly sort this issue.

Sig material that is

[chip-3door]

Potentially they also cause an issue with spinning out though, which is the bit im particuarly interested in, seeing if there is a mathmatical pattern in terms of % slip versus angle at the point it loses control, I realise there wont be a formula of course, as there are other variables.

[Stavros]

Im confused what you are trying to work out or achieve?

Considering the massive changes things like tyres, different geometry, throttle position, weight transfer, etc etc make, all have and all have countless possible settings, itd take an absolute ton of testing and adjustment on a single car to get any firm results, and then youd still get nothing that is all that useful aside from to that single car and single driver?

[Mattyboi]

I`m with you stav, its not going to happen really. You can`t compare front/rear wheel speeds like you can in a normal grip car for aloads of reasons. I`ve looked through the calculations i use here and they really arent applicable. Even if you came up with something it would be so massively complicated with so many variables by the time you`d worked out the varriables they would have changed and you`d be back to square one.

Only thing you need to set up a drift car is good some suspension knowledge and a driver who isn`t thick as shite lol

[chip-3door]

Stav, not trying to achieve anything specific yet, if people had a lot of data they didnt mind us going through there may be something useful that could be made to help, or there may not.

For example, if it becomes obvious that an excessive change in wheel speed acceleration leads to a spin, then thats something that might be able to be helped electronically if you intergrate the acceleration in real time.

Probably not, but at least worth a look at.

The "just be a better driver" could be applied to all other driving aids like yaw control or traction control or ABS, but that doesnt mean that some people dont benefit from having them.

[Stavros]

Originally Posted by chip-3door

For example, if it becomes obvious that an excessive change in wheel speed acceleration leads to a spin

it only would in the wrong situation for that car and setup and driver, not just full stop, so there no way that can be integrated in to anything apart from a better driver.

honestly, i dont think its even worth thinking about from an interests point of view TBH