Speedo Checking

[enigma51]

There has been alot of talk about speedo's and by how much they are out at certain speeds and was wondering if there are any cops out there that will be willing to come to a kb track day event and "check" peoples speedo's for them by either following us around on a certified speedo or using the laser to check it for us. That way we dont have to wait till we get pulled over for speeding etc etc etc.

[myvice]

Usualy a van on the way out to Puke track...

[Rhino]

When I lived in Christchurch, I had several vehicles calibrated at the local "Instrument Repairers." They had a set of two rollers (similar to the brake testing machines) that drove the vehicles wheel(s) at designated speeds and the resulting speedo readings were noted, and if necessary the instrument was re-calibrated before you got a calibration certificate.

[Sniper]

This is why I enjoy those speed trailers :devil2:

[madboy]

This is why I enjoy those speed trailers :devil2:Yeah, but the only ones I've come across lately were parked outside schools at 8.30am... okay for checking 50k, but even I draw the line at checking 70k or 100k in those circumstances.

[enigma51]

This is why I enjoy those speed trailers :devil2:
Only came across one so far and i was in the cage

[Sniper]

There is sometimes one as you come down the hill into cheviot

[Rhino]

There is sometimes one as you come down the hill into cheviot
Scorpygirl and I have seen them there on some of our visits to Christchurch in the past couple of years.

Sniper, I don't know if you remember back to the the days of the seperate Ministry Of Transport (with the Black and White cars,) but there was a Traffic Cop in Amberley, who gave his wife a ticket for exceeding 50kph in the town. I would imagine that he got Hot Tongue and Cold Shoulder for the next 12 months. :rofl:

[Ixion]

There has been alot of talk about speedo's and by how much they are out at certain speeds and was wondering if there are any cops out there that will be willing to come to a kb track day event and "check" peoples speedo's for them by either following us around on a certified speedo or using the laser to check it for us. That way we dont have to wait till we get pulled over for speeding etc etc etc.

Just get hold of a GPS unit (or an Ipaq with a GPS sleeve). I've calibrated all mine cars and bikes (The alfa toy turned out to be 15 kph SLOW at an indicated 100kph EEEKKK. Good thing I found that out. ) 17inch wheels instead of 16 inch I suspect is the reason

[Da Bird]

Would be happy to do it at some stage (at Pukekohe) but probably wont be able to make it to Pukekohe on the 10th... am currently in the USA having a holiday!

My police bike has a calibrated speedo and I can get a laser so either way, should be able to do something. Just a matter of working out a good date.

BC.

[Warren]

GPS is the way to go. It is 100% accurate and you can easily attach one to your handlebars with some tape. GPS will let you test your speedo at various speeds quickly and accurately.

[bugjuice]

I want to do the same with mine.. I'm just gonna bug someone with a GPS unit to either run parallel or attach it to my bike and just sit at 100kph for a couple of mins and it'll tell you

[bugjuice]

Havent you got some work to do??
shhhhhhhhhhhhhhhh :motu:

[Sniper]

Hahaha BJ has to work. Damn so do I

[scumdog]

This is why I enjoy those speed trailers :devil2:


Until the day you look at your speedo, check what the readout on the trailer is and think "Damn, my speedo reads WAY too slow"

And then look in the mirror and realise the trailer is giving a reading of the great big truck slowing down about 50 metres behind you......

[Sniper]

Hahaha, very funny and good call

[Lou Girardin]

It seems that they've limited the readout on them.
To prevent record attempts.

[WRT]

It seems that they've limited the readout on them.
To prevent record attempts.

Spoilsports . . .

Have used them a couple of times, but how accurate are they? Never been sure enough to trust it. Have used the 5k speedo test on the southern, but can you be sure that if your odometer is accurate that your speedometer is too?

[Pancakes]

Right on WRT, they'd be linked together and it's normally something like wheels or tyres that throws it out?

[vifferman]

Have used the 5k speedo test on the southern, but can you be sure that if your odometer is accurate that your speedometer is too?
You can't; odometers are usually not too inaccurate, whereas speedos (as standard) are usually a few percent optomistic.

[Hitcher]

If anybody wants to "calibrate" their speedos (note the deliberate non-use of a capital s), they're welcome to borrow my GPS.

[GR81]

dad's boat has GPS... not much use tho :(

[scumdog]

If anybody wants to "calibrate" their speedos (note the deliberate non-use of a capital s), they're welcome to borrow my GPS.

I 'calibrate' my Speedos each time I put them on!! :motu: :rofl: :rofl: :wait:

[Lou Girardin]

I 'calibrate' my Speedos each time I put them on!! :motu: :rofl: :rofl: :wait:

Read about 50% over-length do they?

[Hitcher]

I 'calibrate' my Speedos each time I put them on!!
Exactly what I was afraid of...

[MacD]

If anybody wants to "calibrate" their speedos (note the deliberate non-use of a capital s), they're welcome to borrow my GPS.

Excuse me sir, but if "speedos" is a contraction of speedometers, should it have an apostrophe placed before the final s?

:dodge:

[Flyingpony]

But even if you discover your speedo is out, how do you adjust it so that it's right?

[number33]

A Sigma 800 is the way to go. About 50 bucks. Clips on/off to your handlebars. Size 1.5" x 1.5". Reads off a tiny magnet araldited to your front rim. Rig the pick-up sensor to within 5mm of the spinning magnet. Dial in your wheel diameter to set. Reads to 300kph. Accurate to 1 kph. Get 'em from pushbike shops.

[Hitcher]

Excuse me sir, but if "speedos" is a contraction of speedometers, should it have an apostrophe placed before the final s?
No. So there.