DL1 Data logger & Sprinting

DL1 Data logger & Sprinting

Author
Discussion

cerealsurfer

Original Poster:

594 posts

264 months

Sunday 2nd November 2008
quotequote all
Anyone used a Race Technology DL1 DataLogger to track performance when Sprinting??

http://www.race-technology.com/dl1_2_27.html

I am part of a double drive.. was hoping to use it to compare and contrast before the afternoon timed runs?

CNHSS1

942 posts

218 months

Monday 3rd November 2008
quotequote all
i use the earlier DL90. to be honest, i find it very useful, especially when used with onboard video, and the wifes outside video of the runs and any other photographer piccies a few days after the event. im not conversant enough (or bright enough;-) to analyse and absorb the pure data on its own at the circuit/hill between runs, although its an area im going to work hard on to improve for next year.
as a tool the logging is great to 'prove' the dynamics of the car and prove if changes made are better or worse. it is also a 'spy in the cab' and often in my case, shows up areas of inadequacy in the loose nut behind the wheel too...

chris_w

2,564 posts

260 months

Monday 3rd November 2008
quotequote all
I use a PerformanceBox ( http://www.performancebox.co.uk/overview.html ) and like it a lot.

We double drive in sprints and like to compare runs, often useful for highlighting where one of us is losing time. Have also used it to verify results - at one sprint my Dad was credited with recording the exact same time in two runs which seemed fairly improbable (and we didn't trust their paper-based timing system!) but the data logs confirmed it.

Biggest issue with data loggers and sprints is the use of a different start and finish point, particularly at a circuit where you're running multiple laps and crossing the 'start/finish' line more than once.

CNHSS1

942 posts

218 months

Monday 3rd November 2008
quotequote all
the race technology software does allow you to determine the start point by means of 'rollout' or even a G start iirc (when forward acceleration is greater than a predetermineed figure ie launch, it triggers the start)
it also allows user selected start stop points and an infinite number of split/sector points for a run. ive found that useful as often 2 runs may be within 2/10ths of each other, but the relative pace at differing parts of the run were markedly different. can give a good indication of the 'best' run if your best sectors are selected from the various runs.

RacingPete

8,884 posts

205 months

Monday 3rd November 2008
quotequote all
I used one for the last four races of the year and found it very interesting reading (a little bit of a report on the DL1 - http://www.pistonheads.com/ginetta/default.asp?sto... )

Though I would add that I find the data useful with the timing sheets of the other drivers as it is good seeing where you lost time compared to other drivers. But as you are sharing the same car and comparing the data between the two of you it would be very useful, especially looking at braking points and top speed through a corner (with the GPS you even can see the race lines on wider sprint circuits).

It is pretty quick for the data to load so you could get some useful information at the track side after the practice runs for analysing.

cerealsurfer

Original Poster:

594 posts

264 months

Monday 3rd November 2008
quotequote all
Thanks for everyone's input... I think this would be a good investment for the money from what you all have experienced. Possibly better than some other mechanical upgrade.

CNHSS1

942 posts

218 months

Tuesday 4th November 2008
quotequote all
worst thing with logging is it can sometimes suggest that you need an 'organic' upgrade rather than an automotive one irked

Graham

16,368 posts

285 months

Tuesday 4th November 2008
quotequote all
We've used them for a number of years, and use them to control p/w in the tvr challenge.

I've found them very usefull or compareing my laps against my self an others when we share data..


the Dl1 is a very good bit of kit

norwichphoto

973 posts

225 months

Tuesday 4th November 2008
quotequote all
We use a DL1 on our Reynard F3 car. GPS module for speed and positioning, and some hard wired sensors for mechanical information. Very good. A few problems with sensor reliability but thats not their fault as the sensors are bought in.


Maxx

356 posts

260 months

Thursday 6th November 2008
quotequote all

Lots of info on Data Loggers, specifically the DL1 here : http://openpitlane.co.uk/forum/forumdisplay.php?f=...

Also, Race Technology (makers of DL1) are now running regular free seminars at their offices in Eastwood, Notts.

Maxx

cerealsurfer

Original Poster:

594 posts

264 months

Thursday 6th November 2008
quotequote all
Maxx said:
Lots of info on Data Loggers, specifically the DL1 here : http://openpitlane.co.uk/forum/forumdisplay.php?f=...

Also, Race Technology (makers of DL1) are now running regular free seminars at their offices in Eastwood, Notts.

Maxx
Cheers for the link.. quickly looking through the forum it's increasingly make me think that this is probably a good driver improvement investment.