Speedo accuracy

A

Alex

Guest

• Jul 5, 2004

• #21

On Sun, 04 Jul 2004 21:20:26 GMT, "mark solesbury"
<[email protected]> wrote:

>Speedo is not part of the MOT test.
>

However, a correctly reading speedo is a requirement of the
Construction and Use regs, meaning you could be fined if a VOSA
official takes your vehicle for an inspection. And it is not a defence
in law against speeding either.

Alex

 

T

Tom Woods

Guest

• Jul 5, 2004

• #22

On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
wrote:

>However, a correctly reading speedo is a requirement of the
>Construction and Use regs, meaning you could be fined if a VOSA
>official takes your vehicle for an inspection. And it is not a defence
>in law against speeding either.

Does a GPS count as a working speedo in the eyes of the VOSA people?

My speedo is dead at the moment, but ive got a gps fixed onto the dash
instead. GPS tis probably more accurate anyhow!

 

A

Andrew Renshaw

Guest

• Jul 5, 2004

• #23

Not a chance - you have to have a working speedo - GPS would not count. You
would be looking at maybe £30 fine after a Court Appearance.

A

"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
> wrote:
>
> >However, a correctly reading speedo is a requirement of the
> >Construction and Use regs, meaning you could be fined if a VOSA
> >official takes your vehicle for an inspection. And it is not a defence
> >in law against speeding either.
>
> Does a GPS count as a working speedo in the eyes of the VOSA people?
>
> My speedo is dead at the moment, but ive got a gps fixed onto the dash
> instead. GPS tis probably more accurate anyhow!
>

 

P

Phil Gardiner

Guest

• Jul 6, 2004

• #24

Andrew Renshaw wrote:

> Not a chance - you have to have a working speedo - GPS would not count. You
> would be looking at maybe £30 fine after a Court Appearance.
>
> A
>
> "Tom Woods" <[email protected]> wrote in message
> news:[email protected]...
>
>>On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
>>wrote:
>>
>>
>>>However, a correctly reading speedo is a requirement of the
>>>Construction and Use regs, meaning you could be fined if a VOSA
>>>official takes your vehicle for an inspection. And it is not a defence
>>>in law against speeding either.
>>
>>Does a GPS count as a working speedo in the eyes of the VOSA people?
>>
>>My speedo is dead at the moment, but ive got a gps fixed onto the dash
>>instead. GPS tis probably more accurate anyhow!
>>
>
>
>
The main reason for a GPS not being a valid speed measuring device is
that it doesn't work in tunnels. On a slightly less major point the
multipath radio propagation effects can effect the positional accuracy
on a sample to sample basis such that the speed could be significantly
in error.

--
Phil Gardiner
Please don't forget to check the alt.fan.landrover FAQ before posting
your question - http://www.aflfaq.dyndns.info

 

P

Phil Gardiner

Guest

• Jul 6, 2004

• #25

Simon Isaacs wrote:

> "SpamTrapSeeSig" <[email protected]> wrote in message
> news[email protected]...
>
>>In article <[email protected]>, Tom Woods
>><[email protected]> writes
>>
>>>On Mon, 05 Jul 2004 11:40:57 GMT, "Andrew Renshaw" <andrew.hart.i hate
>>>[email protected]> wrote:
>>>
>>>
>>>>Not a chance - you have to have a working speedo - GPS would not count.
>
> You
>
>>>>would be looking at maybe £30 fine after a Court Appearance.
>>>>
>>>
>>>I hate speedo's. Never work properly in my landy! I shall put it on
>>>the list of jobs right after fixing the exhaust back together
>>>properly!
>>>The speedo worked perfectly for a couple of months after my last
>>>rebuild efforts. It was even accurate! It had a new cable and head
>>>then too.
>>
>>A bicycle speedometer costs under 10UKP and usually is adjustable for
>>both wheel diameter and miles/kilometres. I can't imagine there is a
>>requirement for a *specific* type of speedometer to be fitted, although
>>you might have to rig some sort of night time illumination for it.
>>
>>I bought some for the children's bikes that were around 5ukp per set.
>>they'd need to be modified for the Landy (mainly by lengthening the
>>cable, but it's readily do-able - it's only a reed switch at the far
>>end). Use screened, audio-type cable to minimise ignition interference
>>(but mine's Diesel, so even that doesn't matter!). Personally, I'd fit
>>it to a rear wheel, or better still the rear prop shaft close to where
>>it exits the centre diff. You only have to glue a tiny magnet on
>>somewhere to actuate the switch. If you know the rear diff. ratio you
>>can calculate the effective wheel diameter easily.
>>
>>Gotta be worth looking at the ones in Asda...
>>
>>(*now* you can laugh)
>>
>
>
> I know someone who failed SVA on a kit car because they used this speedo,
> and it got to about 60ish and stopped reading. The speedo has to be capable
> of displaying the top speed of the vehicle.
>
> Also, when you change the batteries, if you leave it too long, the mileage
> disappears, and it can be reset.
>
> Probably be worth talking to a friendly MOT tester....
>
> --
> Simon Isaacs
>
> Peterborough 4x4 Club Vice Chairman, Newsletter Editor and Webmaster (how
> much more....)
> 3.5V8 100" Hybrid, now LPG converted
> Part owner of 1976 S3 LWT, currently under restoration
> Suzuki SJ410 (Girlfriend's) 3" lift kit fitted, body
> shell now restored and mounted on chassis, waiting on a windscreen and MOT
> Series 3 88" Rolling chassis...what to do next
> 1993 200 TDi Discovery (the Pug 106 is dead, long live the Pug)
>
> Peterborough 4x4 Club http://www.peterborough4x4.co.uk
>
>
Not quite true. The speedo has to be capable of reading to 70mph on an
SVA test and (from memory) within -0% to +10% of actual speed. I know
this as I have the SVA speedo test certificate for my non land rover
vehicle (it was very marginal as at 70mph it was reading 76mph). As the
SVA is a subset of the Construction and Use Act i suspect that providing
the bike speedo can read up to 70mph then you will be complying with the
act. There is no requirement for any sort of type approval for a speedo.

--
Phil Gardiner
Please don't forget to check the alt.fan.landrover FAQ before posting
your question - http://www.aflfaq.dyndns.info

 

N

Neil

Guest

• Aug 2, 2004

• #26

GPS work to averages
"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
> wrote:
>
> >However, a correctly reading speedo is a requirement of the
> >Construction and Use regs, meaning you could be fined if a VOSA
> >official takes your vehicle for an inspection. And it is not a defence
> >in law against speeding either.
>
> Does a GPS count as a working speedo in the eyes of the VOSA people?
>
> My speedo is dead at the moment, but ive got a gps fixed onto the dash
> instead. GPS tis probably more accurate anyhow!
>

 

P

Paul S. Brown

Guest

• Aug 2, 2004

• #27

Neil wrote:

> GPS work to averages

So does an analogue speedo - they are damped so that the needle doesn't go
careening all over the dashboard.

P.

> "Tom Woods" <[email protected]> wrote in message
> news:[email protected]...
>> On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
>> wrote:
>>
>> >However, a correctly reading speedo is a requirement of the
>> >Construction and Use regs, meaning you could be fined if a VOSA
>> >official takes your vehicle for an inspection. And it is not a defence
>> >in law against speeding either.
>>
>> Does a GPS count as a working speedo in the eyes of the VOSA people?
>>
>> My speedo is dead at the moment, but ive got a gps fixed onto the dash
>> instead. GPS tis probably more accurate anyhow!
>>

 

N

Neil

Guest

• Aug 2, 2004

• #28

GPS work to averages
"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Sun, 04 Jul 2004 23:31:45 GMT, Alex <[email protected]>
> wrote:
>
> >However, a correctly reading speedo is a requirement of the
> >Construction and Use regs, meaning you could be fined if a VOSA
> >official takes your vehicle for an inspection. And it is not a defence
> >in law against speeding either.
>
> Does a GPS count as a working speedo in the eyes of the VOSA people?
>
> My speedo is dead at the moment, but ive got a gps fixed onto the dash
> instead. GPS tis probably more accurate anyhow!
>