1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Anyone Use Racechrono Timing App?

Discussion in 'Trackdays & Rider Skills' started by JoePeps, Sep 5, 2020.

  1. 4E62A5F5-9E3F-417F-AB49-3D8E816FCE01.png DBCE99F0-23F2-4391-8D18-4CC88F156D8B.png

    I’m a bit confused with it being accurate?!

    I managed to record one session on my GoPro with the app running and it was about right to what my camera says, and top speed in the right ballpark to what the dash was saying.

    Then as I got faster it didn’t seem to quite tally up, especially the top speeds it was recording. I was over 150mph on the speedo which is probably 140 something in GPS terms but the fastest it recorded was 126?
    I’ve got my phone mounted on the tail piece with perfect GPS signal so why does it seem less accurate as I got quicker?!

    Screenshots above, first is the one I recorded on GoPro, second the last session of the day.
     
  2. Normally the challenge with any lap timing device is the frequency at which the gps signal is recorded/logged thus the accuracy of the device.

    I use a dedicated lap timing device instead of an App on the phone as I doubt that the phone gps is as accurate. This may account for the discrepancy or doubts that you have.
     
    #2 t3scn, Sep 5, 2020
    Last edited: Sep 5, 2020
    • Like Like x 2
    • Agree Agree x 2
    • Useful Useful x 1
  3. Phone GPS are crap, you need to Bluetooth it to a GPS receiver.

    Unless you are happy with the times, in which case it works perfectly :upyeah:
     
    • Funny Funny x 2
    • Agree Agree x 2
    • Like Like x 1
  4. Just a cautionary note. The T&Cs of some TD organisers specifically prohibit the use of timing devices. So not only might they exclude you if they spot you using it, if you crash and make a claim or someone else makes a claim against you, the insurer might try to avoid liability on the grounds that you were in breach of the TD T&Cs, as a result of which you were riding against the clock and pushing too hard as a result.

    Please don't take this as gospel as I am no expert on insurance law, which is a specialist area all of its own but if you do have trackday cover as one of the benefits, check the wording carefully.
     
  5. better get rid of all bikes on trackdays with built in GPS dash's then....
     
    • Funny Funny x 1
  6. I imagine on board timers can be switched off or rather not switched on in the first place as it's the use of them for lap timing not their presence on the bike which is prohibited.

    This is from MSV’s T&Cs (though looking again it appears to be for car days, but the bike ones are the same IIRC)

    B9B0B054-FBCA-44F1-BB5F-E0D669655717.jpeg
     
  7. remember its only an offence if you get caught....
     
    • Funny Funny x 1
    • Agree Agree x 1
  8. I don't have and have never owned a bike which is modern/sophisticated enough to have on-board datalogging except maybe my long gone 848 or 848SF (and I never used that feature if they had it) but I imagine that if timing data is stored in any way either on the bike or uploaded to a cloud the insurer could ask for and would be entitled to a download of it. If the data has been deleted then at best the insurer could vitiate the policy on the grounds of non-cooperation, or at worst, could accuse the insured of making a fraudulent claim.
     
  9. What’s this crash and make a claim? It’s a trackday: don’t go bringing that nonsense on to track :punch::poop:

    You sign up, take the risk, get on with it ;)
     
    • Agree Agree x 2
  10. Btw get a proper timer, not that inconsistent app nonsense. If you’re serious about times, get the proper kit :upyeah:
     
  11. I wasn't talking about a claim against the organisers.

    Many insurance policies now include trackday cover and I bet you dollars to doughnuts there's a term in such policies which requires you to abide by the TD T&Cs. If someone comprehensively trashes their Superleggera then they would be perfectly within their rights when investigating the claim to require a download of any datalogging device.

    Other claims which might arise are where you negligently crash into someone else and their insurer makes a court claim against you for damage to the bike and personal injury, which, obviously, you would have no control over. If it came to light (ie: if they apply for disclosure of the data, which they probably would) that you had been timing your laps that would be very harmful to your defence as it shows you were in breach of the T&Cs which (presumably) bars timing as it tends to make TDs more dangerous if riders are racing themselves against the clock. That would be prima facie evidence of negligence.

    TDs are not a legal free fire zone and so there are also circumstances where the TD organiser or the circuit owners could be liable. One example would be if the track was in a dangerous condition but they sent people out on it, or air fencing was defective. Deleting, withholding or editing the data would be ill-advised, leading to at best, the insurer avoiding the claim or at worst, being prosecuted for fraud, contempt of court or attempting to pervert the course of justice. That does happen and I have represented a few people who managed to convert what they thought was an innocent and victimless massaging of the truth into a prison sentence!

    Whilst is it true that a large element of risk is involved in TDs, blanket exemptions and exclusion/limitation clauses are rarely upheld and in some cases, may in fact be positively unlawful eg: the Unfair Terms Contract Act 1977 prohibits the use of any term which purports to exclude liability for death or personal injury.

    While there are a lot of "where's there's blame there's a claim" chancers, ambulance chasers and malingerers, which are usually weeded out by the legal system, the general approach of the courts is nowhere near as laissez faire as you would like it to be.
     
    #11 Zhed46, Sep 10, 2020
    Last edited: Sep 10, 2020
    • Like Like x 1
  12. Back on topic.

    I used RaceChrono for a couple of years on a cheap Samsung Android phone Velcro’d to the tank and connected by Bluetooth to a Garmin GLO on the tail.
    It worked really well and I was also able to overlay the data display onto my GoPro footage at the end of the day.
     
    • Like Like x 1
  13. Race chrono seems largely okay for me when I use it. I have got the odd weird lap but you can tell them pretty easily once you inspect them.

    When racing I use my starlane
     
  14. I'm not insured on track either way so doesn't really worry me to be honest. Plus once you have at least 1 session recorded at any track, if you crash on the second session doing a very similar speed then it proves you were riding in your ability for the most part? Either way a bit of a moot point for me, I'll worry about it if it ever happens.

    Plus all the journos told me the V4 is uncrashable.

    Nah not paying silly money thanks. I bought a waterproof phone case and bolted it to the back of the bike so it gets perfect reception and works spot on. Still been using the onboard timer manually and it's within a couple of tenths of the app which is more than likely my reaction time than the app being out.
    The top recorded speed still isn't quite what it should be but I'm only worried about the times.

    Overall for £20 with the case I'm happy that it's good enough for me to track a bit of progress.
     
  15. Do they time you and keep records? I just went out and had a look at the stickers still on my bike from my last MSV TD a couple of weeks ago and there is no bar code and the material is too thin to embed a transponder in.

    Also, I don't think consistent lap times would make much difference tbh, as the rider could just as easily be on the limit all the time and was just lucky not to have crashed before or the track conditions were different. It's not the speed that's the important factor but the pressure the rider is putting themselves under to push and make up time if, say, held up by a bimbler or a fluffed gear change.

    I realise I am probably coming across like I'm Constable Killjoy of the Fun Police*, but I'd rather put this out there and then you and others who may read it now or unearth the thread in future can make decisions in the light of all relevant info, than have something happen and then find yourself saying "I wish I'd known that...." .


    * I'm not a constable of any kind actually - I'm "counsel"

    Ha! As I said to a guy I met who had recently binned an 1199s despite having all the traction control settings turned up to 11 - "It's software, not magic!" :D
     
  16. I know I’m not a dick on track so not on the slightest bit concerned mate, but thanks for the advice.
    I know the risks when I sign up, someone could take me off and write off my £25k bike and just walk away, what you gonna do?!
     
    • Like Like x 1
  17. Unfortunately, the claiming practice is becoming more and more common place now days
    All decent circuits have CCTV that covers and records all the track all the time, so legal requests coming in to recover footage of accidents (in some cases, from some time ago) is starting to become the norm now.

    In answer to your original question though, Phone GPS is pretty pants at the speeds that you get on the track, so you'd want a separate GPS device like a Quartz that you bluetooth into your phone to make it work properly
     
    • Agree Agree x 1
  18. Yes. The limitation period for negligently inflicted personal injury is 3 years and for general negligence (ie: if it’s just £30k worth of bike and gear that is trashed), 6 years.
     
Do Not Sell My Personal Information