Speed variance Forums

www.outdoorbits.com

Sister shop to Motorhome Facts

TomTom GO LIVE Camper & Caravan
The ultimate Sat Nav system for your motorhome, pre-programmed with 20,000+ POI's from the largest European Motorhoming Websites including the Motorhome Facts Campsite Database.

Motorhome Insurance

Phone on 0208 9845311
Motorhome Insurance Quote

Campsite Reviews

Review of Camping Serenella

Italy

Full Details

Motorhome Garage

2007 Burstner Delfin Perfomance T700

Owned by blade1889

Updated 05/02/2011

2004 Swift Kontiki 645

Owned by centerman

Updated 20/01/2011

2007 Dethleffs Globe Trotter XXL

Owned by TJ101

Updated 09/03/2012

Motorhome Chat Rooms

10 Chat Rooms
0 Members connected
0 members chatting

Chat Now

Motorhome Travel Blogs

Recent Blog Entries

Start Blogging Now!

Latest Classified Ads

OMNISTOR SAFARI RESIDENCE G2 FOR OMNISTOR 5003 AWNING for sale

OMNISTOR SAFARI RESIDENCE G2 FOR OMNISTOR 5003 AWNING
by Deserteagle

Eura Mobil 675VB - Bunk Beds!
by surfiejim

Toyota Granvia 3.0TD auto 4WD, 2 berth hitop for sale

Toyota Granvia 3.0TD auto 4WD, 2 berth hitop
by wellhouse

Motorhome Facts :: View topic - Speed variance

Welcome to Motorhomefacts, we are a thriving motorhome community (Largest in Europe). Why Not JOIN NOW and get instant access to more of the website. It costs nothing to join and only takes a few minutes.
We have 200,000 different people visiting our site monthly and this amount of motorhomers in one place guarantees a fast response to any questions you may have. We also have unique facilities not found elsewhere such as our Online Logbook, stopover tracker, Motorhome directory with Ebay type feedback and the largest repository of motorhome campsites reviews found anywhere

Rally News

Next Rally is @ Spring Bank Holiday at Hamble Primary School, Hamble, Southampton on 01/06/2012 in Hampshire

Sprinta

Age: 57

Joined: Sep 15, 2010

Posts: 830

MH: Riviera 171 2.8JTD

Campsites

Gender:

Location: Sunny Devon

Status: Offline

I think I can add some valid points here, as already said speedos overread by a few percent, generally in the 3% to 5% over range. Motorcycle speedos, Suzuki especially, can over read by over 10% this is generally to enable barroom bragging rights about how fast it goes.

I've been doing trackbased landspeed racing for a number of years and that originally started out as a quest to do the elusive 200mph as a genuine speed on a roadbased motorcycle, and not just going by what the erratic speedo said.

Whilst all of our runs would be timed officially by using professional timekeepers we always used to carry our own satnavs mounted on the bike to enable us to have an immediate feedback of the run and a confirmation of our speed. Sort of belt and braces, just in case the lights were actuated in error by an animal or bird or even by blowing leaves on occasion.

We found that satnavs are invariably extremely accurate in measuring speeds whenever there was a sufficient sampling time to allow the calculations to have a valid meaning. When you are running at 200+ mph going through the 30yd timing light section at the end of a measured mile you tend to be accelerating very slowly and so the rate of change of speed is minimal and so the difference between the official speed and the satnav speed was always minimal.

______________________________________________________________
Blue Merle Border Collie - Meg - she´s got the brains
Chocolate Labrador - Jewel - about as daft as a daft thing can get

If it aint broke, break it

Hold fast to dreams
For if dreams die
Then life is a broken-winged bird
That cannot fly

Sprinta

Age: 57

Joined: Sep 15, 2010

Posts: 830

MH: Riviera 171 2.8JTD

Campsites

Gender:

Location: Sunny Devon

Status: Offline

DTPCHEMICALS wrote:

tonyt wrote:

Motor vehicle speedos are designed specifically to read faster than actual.

So I wasn`t doing 140mph at Cadwell last time out. Sad

Dave p

I very much doubt you would be on stock gearing Dave when you were on a track bike, adding a couple of teeth to the back sprocket would easily add 10% to your speedo 'speed'. I can remember seeing 220mph on occasions racing at Santa Pod when my 1/4mile speeds were only around 155 really. Laughing

Goto page Previous 1, 2 Members do not see the Adverts Below

Motorhome Facts Forum Index » Motorhome Security

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

All times are GMT + 1 Hour
Page 2 of 2 Goto page Previous 1, 2