26 replies to this topic

[Scuba-Roo]

Looking into some Lap timming systems to use. So i was wondering what anyone else is using? or friends use?

I've heard about iphone apps, and i do have an iphone 4 so maybe this could work? I'm sure their is others out their but...

http://web.me.com/hs...epage/Home.html


Whatever info i find i'll post up along the way



Mark

[aekOne]

let me know if you find a good one for iphone 4!

[Ben_20EJT]

revalution race gear brookvale have a good range of lap timers and should be able to find you one to suit your needs.

[aekOne]

you'd better go see shaz about a bank loan before you go

[fatcat67]

LOL at Aek.
He put one in the first post. It looks OK too.

[aekOne]

haha yeah i should have looked at the link. it does look pretty good actually. i think i might buy

[SAV84C]

www.racechrono.com
ive heard good things about this but doesnt work with iphone

[Scuba-Roo]

Gonna try get an nokia and bluetooth GPS reciever, i'll buy the harrys laptiming too and see how it goes

[Scuba-Roo]

For anyone else interested heres racechrono, i haven't used it but people who have rave about it.
http://www.racechrono.com/download/


I'll be buying a cheap nokia to run it, hopefully someone has or knows someone with a cheap second hand phone to suit...

You'll need one of these aswell, which should arrive to my place on thursday.


http://cgi.ebay.com....=item1e5f89d999


So hopefully should cost me under $200


Will be interesting to see how the iphone app compares.


And that's what you need for GPS lap timing, i'll post up data, times, and more after i've used it

[Scuba-Roo]

Just put racechrono on my brothers N95, it looks bloody awesome! fairly easy user interface aswell. Also has "performance testing" for 0-100km 1/4mile 60ft 1/8mile times, i'll see how they work later

Also seems to be a feature for OBDII connectivity


You can also use the internal GPS on the phone

The lap timing accuracy with an internal GPS can sometimes be relatively good, but a good external Bluetooth GPS is recommended for frequent track day use. One of the best receivers currently is the QSTARZ BT-Q818 eXtreme!

I just so happen to have one next to me

[twinturbosubaru]

Interesting discussion.

The iPhone app looks pretty good actually, my only concern with this is that you would most probably have it in a cradle on your windscreen, this is against most track rules as I think it would be considered unrestrained.

I would hate to have a nice glass iphone whack me in the face if I hit a wall or something....

Regards
Paul

[Alex]

Hard mount the mount like I have, Paul.

no photos ATM I'm afraid.

It's mounted down where the sunglasses holder is, so no risk of hitting you in the face. Perhaps in the goolies.


If you hit the wall, then I doubt you'd be wanting to use your iphone. I for one, would be using the broken shards to cut my wrists.

[Scuba-Roo]

Do you have a thin metal bracket that goes behind the trim Alex? Like what older hands free sets used to have?

I'll be sitting the phone and gps logger in the compartment above my stereo, or in the cup holder. I won't need to analyse data while I'm on the track. It'll just distract me.

[Alex]

Do you have a thin metal bracket that goes behind the trim Alex? Like what older hands free sets used to have?

I'll be sitting the phone and gps logger in the compartment above my stereo, or in the cup holder. I won't need to analyse data while I'm on the track. It'll just distract me.

You're gonna make me take a photo and shiz, huh?


Metal bracket?

[Morgan]

I wanna see what you got going on down there Alex...

Photo please


/no homo

[RX25SE]

+1 for photos of said bracket.
kthxalexbai

[Scuba-Roo]

I'll take a picture of what i mean Alex, it's in dad's car, but his away on work.


Got racechrono on the computer, its a bit fiddly to work, but you can't really complain for it being free, and once i know exactly what im doing it'll be better.

Wasn't my car obviously, Slow time due to the 0-100 time (13.18)




When viewing this graph it stands out like dogs balls why the 0-100 was so slow, the fasted 0-100 time the car did was a 5.1, and it should still be doing better then that.




And the testing wasn't carried out on a public road

[Scuba-Roo]

So i got to try Racechrono out on Wakefield the other day, i was using a Nokia N95 with the QSTARZ BT-Q818 eXtreme.

The software is really easy to get started with and use when timing on the track. Putting the data on the computer to view took me a couple of trial and errors as im a bit of a n00b. But here's some of the data.

Highlighted in blue was my fastest lap. All the boxs that green are where my sector times was faster, and red because they were slower.



It becomes more obvious when i compare a different lap




You can also change from sector times, to split times and speeds through the sectors.


Another feature is this graph display that you can view, Which displays your speed in reference to where you are on the track.



if you want to get serious you can add altitude into the graph aswell.


Also you can compare laptimes, not only from yourself but from other sessions, including your mates aslong as they give you the data. Their's also the red and blue arrow on the track to show you the difference




I can't reccomend this program enough, their's so many more features it can do, im hardly scratching the surface. And all it really cost me was the GPS reciever which you could get for under $100 outside of Australia.

[alexGT]

i used harrys lap timer, worked great for me

[Scuba-Roo]

i used harrys lap timer, worked great for me

Cool, i never got around to downloading it. Are you able to put up some screen shots of it?