This is a discussion on Speedometer vs TomTom within the Maintenance & Performance forums, part of the General Motoring Discussions category; Originally Posted by ScoobyChris It tells the time too? Chris Nah, it's got Snake built-in! Don't forget, the 'accuracy' of ...
| |||||||
Pronounced "bris-skoda", a brisk skoda. | Register | Gallery | FAQ | Members List | Calendar | Mark Forums Read |
| | #26 |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,764
Thanks: 339
Thanked 358 Times in 309 Posts
| Re: Speedometre VS TomTom Nah, it's got Snake built-in! ![]() Don't forget, the 'accuracy' of GPS systems is 'improved' by sticking you firmly on marked road. One of the new sections of the M60 includes sliproads either side of the main carriageway that run for a good couple of miles between two junctions. If you were to stay on the motorway when the route wanted you to go onto the sliproad, the GPS wouldn't twig you were a good 20 or 30 metres off-course...
__________________ |
| | |
| | #27 |
| The Stig Join Date: Jan 2007 Location: Folkestone
Posts: 1,178
Thanks: 47
Thanked 56 Times in 42 Posts
| Re: Speedometre VS TomTom Yup it has a Breitling watch Moulded into it which accounts for the other £29900 ![]() ![]()
__________________ "And when he gets to heaven to Saint Peter he will tell... One more Soldier reporting Sir... I've served my time in Hell"Mods done so far : Revo Stge 2, Forge Adjustable Spacer, Forge Diverter Valve, Miltek CBE, Evoms, Stu's Cruise , Autotech Fuel Pump, Xenons Upgrade, Koni FSD, Eibach Springs, Forge Short Shifter, VF Torque Arm Insert, NGK Iridium Plugs, Sachs Clutch & Flywheel, MFD3 Mods to come: KO4 Conv, LSD, Big Brakes |
| | |
| | #28 |
| Briskodian Join Date: Sep 2003
Posts: 968
Thanks: 11
Thanked 16 Times in 16 Posts
| Re: Speedometre VS TomTom It's on the second page of the data sheet linked in the post above yours, and specifies accuracy rather than precision. http://www.sirf.com/products/GSC3LPProductInsert.pdf
__________________ Octavia 4x4 |
| | |
| | #29 |
| 2.0 FSI Sport. Join Date: May 2007 Location: oxon
Posts: 9,408
Thanks: 11
Thanked 288 Times in 262 Posts
| Re: Speedometer vs TomTom Most cars are set to around 5% above the limit, you also need to take into concideration tyre pressure and tyre wear too. my speedo is around 1-2% thanks to it being calibrated before it was fitted. |
| | |
| | #30 | |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometre VS TomTom Quote:
At a more typical 140dB gain, you can take 2 orders of magnitude off that with a 5 satellite lock, and another 1 for each satellite less you've got locked. | |
| | |
| | #31 | |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,764
Thanks: 339
Thanked 358 Times in 309 Posts
| Re: Speedometre VS TomTom Quote:
Then again, I remember clearing out the Q-Stores and finding a spare door handle for the back door of one of out radio relay wagons. It wasn't one that turned or anything, just attached at top and bottom to allow you to pull the door closed. The invoice for it was still attached: £23! For a bent piece of metal with holes either end! Defence contracting is the business to be in - once you win the tender, you can charge whatever the Hell you want! Then again, you'll probably find that one of the Chiefs of Staff was the fag of the Director of the contractor, so there's a whole lot of funny handshakes going on. Little wonder most of our personal kit was bought privately... Tens of thousands of pounds overcharged for a 'soldier-proofed' bit of otherwise obsolete electronic equipment, and they can't spare a few hundred to provide body armour for everyone or air filters for Challengers to allow them to run in the desert...And don't even get me started on the Typhoon. They've not even brought it into service properly yet (8 in total based at Coningsby after how long?), and it's already miles behind the Yanks' and Russians' latest offerings. Not that the JSF project has been any better in terms of lateness or cost, but at least it's state of the art... ![]() ![]()
__________________ | |
| | |
| | #32 |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometer vs TomTom If you treat Typhoon as a productionised version of the BAe ATP demonstrator, it is about 10 years older than the F-22. I make no comment about "time to service". |
| | |
| | #33 | |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,764
Thanks: 339
Thanked 358 Times in 309 Posts
| Re: Speedometer vs TomTom Quote:
), and the manoeuvrability. I wonder when the last 'proper' dogfight involving and RAF aircraft actually was. Air combat strategy hasn't changed AFAIK since the 60s: have missiles with longer ranges than the enemy, fly really fast until the missiles lock onto the enemy aircraft, fire your missiles than leg it really, really, really fast! At a distance of 30 or 40 nm, I really don't see the necessity of being able to turn on a sixpence - I doubt you could even see the other aircraft. BAe must have been laughing behind their hands when they sold the whole manouvrability thing...To make things worse, a quick go on Wikipedia to look at the history of the Typhoon shows that the MRCA project kicked off only four or five years before ECA - and the Tornado's been in service nearly 25 years!!! I really am in the wrong business... ![]()
__________________ | |
| | |
| | #34 |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometer vs TomTom Probably Korean War - Wikipedia, the free encyclopedia for the last RAF "guns vs guns" dogfights, and the 1973 Israel vs neighbours unpleasantness for the last turning battles. |
| | |
| The Following User Says Thank You to KenONeill For This Useful Post: | ap0gee (07-03-2008) |
| | #35 |
| The Stig Join Date: Jan 2007 Location: Folkestone
Posts: 1,178
Thanks: 47
Thanked 56 Times in 42 Posts
| Re: Speedometer vs TomTom ap0gee We have far better kit now and you would be highly surprised at the Systems we have these days. ![]() But your right tho people defo bump the price up for kit to the army. Hence they are starting to local purchase things straight off the shelf these days. I remember an alignment system we used to use for one of the weapon sights. An ordinary cross head screwdriver (albeit with a serial no. and crowsfoot on) was valued at £538 for a bleedin screwdriver. ![]() Someone soon cottoned on you could get 538 from B&Q for that . Thankfully the system has been replaced for a more expensive computerised version that doesnt work properly![]() ![]()
__________________ "And when he gets to heaven to Saint Peter he will tell... One more Soldier reporting Sir... I've served my time in Hell"Mods done so far : Revo Stge 2, Forge Adjustable Spacer, Forge Diverter Valve, Miltek CBE, Evoms, Stu's Cruise , Autotech Fuel Pump, Xenons Upgrade, Koni FSD, Eibach Springs, Forge Short Shifter, VF Torque Arm Insert, NGK Iridium Plugs, Sachs Clutch & Flywheel, MFD3 Mods to come: KO4 Conv, LSD, Big Brakes |
| | |
| The Following User Says Thank You to Mater For This Useful Post: | ap0gee (10-03-2008) |
| | #36 |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometer vs TomTom Anyway, we all know there's only one way to settle this:- FIGHT!!! |
| | |
| The Following User Says Thank You to KenONeill For This Useful Post: | ap0gee (10-03-2008) |
| | #37 | |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,764
Thanks: 339
Thanked 358 Times in 309 Posts
| Re: Speedometer vs TomTom Quote:
![]()
__________________ | |
| | |
| | #38 | |
| Go Gadget Octy! Join Date: Apr 2007
Posts: 3,327
Thanks: 212
Thanked 115 Times in 108 Posts
| Re: Speedometer vs TomTom Quote:
The russians still have the best production aircraft for dogfights. The Mig 29 Fulcrum/SU-27 Flanker (basically the same thing) can out turn just about everything out there! And they have the only ejector seat that works inverted - hence why the yanks are trying it out. | |
| | |
| | #39 | |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometer vs TomTom Quote:
![]() That said, I agree that the Tumanski has a remarkable high alpha performance, and that the K-36 is the best ejector seat in the World. | |
| | |
| | #40 |
| Friskodian Join Date: Nov 2007 Location: Deep Space 9
Posts: 2,387
Thanks: 43
Thanked 135 Times in 132 Posts
| Re: Speedometer vs TomTom Whats an inverted ejector seat? One that fires down like on the L101 Starfighter of the late 60s |
| | |
| | #41 |
| Briskodian Join Date: May 2007 Location: Hertfordshire
Posts: 805
Thanks: 3
Thanked 47 Times in 41 Posts
| Re: Speedometer vs TomTom Aplogies for reverting to post topic, but the digital SPEED reading in my Octavia is identical to the GPS speed calculation on my Road Angel. Was really surprised by this, as it means that cars can be manufactured to display EXACT speed, but as mentioned the needle indicator is deliberately over estimating. Pressumably for both yours and their protection so you don't speed and they don't get sued for speeding and to cover most errors from different tyre sizes, wearing limits, inflation pressures etc etc
__________________ ![]() Black Pearl vRS 204PD COMBI Factory Options: ALL (bar the front parking sensors and anti-whiplash head restraints!) |
| | |
| | #42 |
| ASZ Eternal Join Date: Aug 2004 Location: Leafy Chesh-shire
Posts: 6,764
Thanks: 339
Thanked 358 Times in 309 Posts
| Re: Speedometer vs TomTom Don't forget, plod use calibrated speedos, so it must be possible. Of course, the speed is taken from the transmission, so there will always be a degree of variation as the tyres wear, whereas a GPS speed reading won't be affected by this (although there are other accuracy issues such as the number of satellites being triangulated etc...)
__________________ |
| | |
| | #43 |
| Briskodian Join Date: May 2006 Location: Normally somewhere in Scotland!
Posts: 11,043
Thanks: 63
Thanked 548 Times in 536 Posts
| Re: Speedometer vs TomTom In this case, one that fires upwards in local aircraft axes, but turns itself to put the pilot above the seat in the gravity field between leaving the aircraft and the pilot parachute deployment. If you remember those 2 MIG 29s colliding at the Farnboro Show a few years back, the K-36's performance played a part in saving both pilots' lives. |
| | |
![]() |
| Thread Tools | |
| Display Modes | |
|
|
| ||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Speedometer Problem | Ruskey1978 | Octavia I | 1 | 02-08-2007 20:05 |
| lhd speedometer | maciek_pl | Octavia I | 15 | 08-10-2006 18:29 |
| GPS or Speedometer correct | benterrier | Octavia I | 12 | 21-06-2006 00:11 |
| Speedometer malfanction | IC3CUB3S | Octavia I | 4 | 18-06-2006 22:04 |
| Differences between TomTom and TomTom Mobile Mapping? | Wardy | The Tech Shed | 1 | 06-01-2006 14:53 |
BRISKODA.net is operated by Summit 360 Ltd