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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10353

United Kingdom 
I'll take that risk. It's physically attached as it will be bolted in the dash!
It will be more accurate than the wavy needle that did work and if they can prosecute you using 'radar' technology.....
I'm not fussed to be fair.
Post #607565 7th Mar 2017 4:21pm
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Stacey007



Member Since: 25 Sep 2015
Location: Cheshire
Posts: 3693

United Kingdom 
Quick google seems to suggest you will be ok?

Lots of kit car people using them and they seem to be ok.

Another option I read about was a motor bike digital speedo which people fit and it needs a magnet on the drive shaft?

I do think if fitted in the dash board as above it will look factory anyway, and must be better than a speedo jumping around the dashboard, so your doing anything between 28 mph and 38 mph say.... Thumbs Up
Post #607607 7th Mar 2017 7:47pm
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GREENI



Member Since: 22 Aug 2010
Location: staffs
Posts: 10353

United Kingdom 
We used to fit push bike computers to the comp safari buggies in the past! Glue a magnet on the prop !

But, yeah I'm sure it'll be fine Cool
Post #607629 7th Mar 2017 8:32pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
LandRoverAnorak wrote:
I'm pretty sure that a having only a GPS speedo isn't legal. Something about type approval and being physically associated with the car springs to mind. It'd certainly be worth checking before spending lots of money Confused


Because of this i would think.

Quote:
Speedometers

Fitting

Regulation 35 Road Vehicles (Construction and Use) Regulations 1986 states that every motor vehicle shall be fitted with a speedometer except:

a vehicle having a maximum speed not exceeding 25 m.p.h.,
a vehicle which, at all times, is unlawful to drive at more than 25 m.p.h.,
an agricultural motor vehicle driven at not more than 20 m.p.h.,
a motor cycle not exceeding 100cc first used before 1st April 1984,
an invalid carriage first used before 1st April 1984,
a works truck first used before 1st April 1984,
any vehicle first used before 1st October 1937,
a vehicle fitted with an approved tachograph which is required or not.

Vehicles first used on or after 1st April 1984 the speedometer should be capable of indicating the speed in miles per hour and kilometres per hour. Vehicles may instead comply with EC Regulation (Community Directive) 97/39 or ECE Reg 39.
These directives stipulate the markings, graduations of the speedometer and refer to 75/443/EEC which specifies the tolerances.

The indicated speed must never be less than the true speed (it must read exact or high) and between 40km/h and 120km/h the error must not exceed 10% + 2.5 m.p.h. high (true speed/10 + 4kph).
This means at a true speed of 25mph or 40km/h the speedometer may read 40/10+4 = 8km/h or 5mph high = 30mph indicated.

Maintenance

Regulation 36 Road Vehicles (Construction and Use) Regulations 1986 states that the speedometer fitted to a vehicle must be kept free from any obstruction which may prevent it from being easily read and shall at all times it is used on a road be maintained in good working order except if:

the speedometer became defective during the journey being undertaken, or
steps have been taken to have the defect remedied by replacement or repair with all reasonable expedition, or
the vehicle is fitted with an approved tachograph which is required to be fitted under the Community Recording Equipment Regulation (offence is under that regulation).


Unless it has some sort of connection to wheel rotation (like many built in sat navs do) it wont work in tunnels, and can be affected by being surrounded by large buildings or trees.

The speedo isn't tested on the MOT, however there's nothing to stop the tester issuing an advisory, which then stays on the record for the vehicle.
Post #607677 7th Mar 2017 9:28pm
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
GREENI wrote:
I'll take that risk. It's physically attached as it will be bolted in the dash!
It will be more accurate than the wavy needle that did work and if they can prosecute you using 'radar' technology.....
I'm not fussed to be fair.

By 'associated with', I meant that it's reading is related to it's connection, i.e. electronic or mechanically driven. However, as long as you know and are happy with the risk then that's fine Thumbs Up Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #607711 7th Mar 2017 10:29pm
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grafty99



Member Since: 15 Aug 2012
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United Kingdom 2002 Defender 90 Td5 HT Caledonian Blue
Does it have the option of a pulse input for when gps signal is lost? 2002 90 Td5 Station Wagon
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Td5 90 Thread http://www.defender2.net/forum/topic50767.html
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Post #608030 8th Mar 2017 11:05pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
I think i did see a thing you could get for stereos where you put it on a wheel arch then magnetised the tyre with a wand, which then gave it a speed pulse.
Post #608047 9th Mar 2017 12:00am
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