Speedo for Samuri
Discussion
Getting some of the little jobs done for the MOT and I realise that my new Sam will fail the MOT on the accuracy of it's speedo reading if they check it. My sister clocked me at just under 55mph when my Sam's speedo said just over 40mph - not good... especially considering the vast array of speed cameras about these days.
My Sam has 15" wheels with the massive 275/60 15 General... something, is it Grabbers!
What is the best way of sorting this problem out? Is it possible to fit an electronic speedo? As always any help and advice much appreciated, thanks.
My Sam has 15" wheels with the massive 275/60 15 General... something, is it Grabbers!
What is the best way of sorting this problem out? Is it possible to fit an electronic speedo? As always any help and advice much appreciated, thanks.
speedos probably out due to size of tyres
ive never had one checked yet
i believe there wAs a company that made stickers to fit over your existing speedo but calibrated differently any one know who they are?
alternTEly you can have your speedo recalibrated
there seems to be a few listed on the web who could do that
ive never had one checked yet
i believe there wAs a company that made stickers to fit over your existing speedo but calibrated differently any one know who they are?
alternTEly you can have your speedo recalibrated
there seems to be a few listed on the web who could do that
Here are some comments from the Sylva forum... the final one is particularly relevant.
Cheers
Ian
buy a Sigma bike computer 15 quid and mount the sensor
on the front disc. Need 3m of bell wire to extend the cable and thats it. I just extended mine with normal insulated copper wire. Mine wasn't co ax but I dont see any reason why using normal wire would cause a problem as long as you twist the wires together.
My magnet was secured to the inside of the wheel using Milliput 2 part epoxy adhesive putty. This has the advantage over just araldite in that you can build quite a lump of it up to adjust the distance if necessary. I replaced the standard magnet with the end of a magnet pick up tool.
The other end is attached to the brake disk dust shield (ford escort uprights) it's just cable tied on.
Nothing's come loose yet! and it works fine.
Sigma speedo pickup is a simple reed switch, so interference should not be an issue - I used simple bell wire to extend mine and it worked fine.
BTW, I found a good source of spare magnets to be the magnetic cupboard catches (from B&Q etc). Take the catch apart and there's a neat rectangular magnet inside.
I use a Sigma BC1200 and this works great. The only gotcha is you have to divide the wheel diameter by 1.61 to get MPH rather than KPH.
Is Very accurate, was less than 2 MPH out when I had my car on the Rolling road.
I bought a well spec'd Topeak 'Panoram' Cycle computer for £20 from: www.wiggle.co.uk
Fitting was onto wiper stalk and a magnet on the rear driveshaft, made a bracket up on the side of the diff for the reed switch. Unit uses travelled distance for one revolution to calibrate. No problems, plus it has a backlight (Downside is it can't be permamently on). Had my unit up to 115mph. Mine came with a silver front panel, but I removed the cover (easy operation) and painted it satin black.
I later replaced the reed switch that came with it with a bolt type reed from merlin motorsport along with high power magnets, just to be sure it got a good signal.
One small word of warning - don't buy a cheap Halfords one, as the one on my bike struggles to register speeds over 40 KPH.
Sigma go up to 300kmh and they do a LED light so you can see it in the dark as well.
I got a Sigma 1200 cost about £15 and apparently is accurate to 180 MPH.
Cheers
Ian
buy a Sigma bike computer 15 quid and mount the sensor
on the front disc. Need 3m of bell wire to extend the cable and thats it. I just extended mine with normal insulated copper wire. Mine wasn't co ax but I dont see any reason why using normal wire would cause a problem as long as you twist the wires together.
My magnet was secured to the inside of the wheel using Milliput 2 part epoxy adhesive putty. This has the advantage over just araldite in that you can build quite a lump of it up to adjust the distance if necessary. I replaced the standard magnet with the end of a magnet pick up tool.
The other end is attached to the brake disk dust shield (ford escort uprights) it's just cable tied on.
Nothing's come loose yet! and it works fine.
Sigma speedo pickup is a simple reed switch, so interference should not be an issue - I used simple bell wire to extend mine and it worked fine.
BTW, I found a good source of spare magnets to be the magnetic cupboard catches (from B&Q etc). Take the catch apart and there's a neat rectangular magnet inside.
I use a Sigma BC1200 and this works great. The only gotcha is you have to divide the wheel diameter by 1.61 to get MPH rather than KPH.
Is Very accurate, was less than 2 MPH out when I had my car on the Rolling road.
I bought a well spec'd Topeak 'Panoram' Cycle computer for £20 from: www.wiggle.co.uk
Fitting was onto wiper stalk and a magnet on the rear driveshaft, made a bracket up on the side of the diff for the reed switch. Unit uses travelled distance for one revolution to calibrate. No problems, plus it has a backlight (Downside is it can't be permamently on). Had my unit up to 115mph. Mine came with a silver front panel, but I removed the cover (easy operation) and painted it satin black.
I later replaced the reed switch that came with it with a bolt type reed from merlin motorsport along with high power magnets, just to be sure it got a good signal.
One small word of warning - don't buy a cheap Halfords one, as the one on my bike struggles to register speeds over 40 KPH.
Sigma go up to 300kmh and they do a LED light so you can see it in the dark as well.
I got a Sigma 1200 cost about £15 and apparently is accurate to 180 MPH.
Very interesting and a low cost way of knowing the correct speed. Thing is, in a car, a little cycle computer would look odd and LCD probably hard to see in all conditions. There must be an electronic car speedo that works on the same sort of principle... though I dare say they'll be ten times as much! Anyway the cycle computer provides another option if all else fails. Thanks.
Hi Ballbearing! I'm not quite sure how much you are already into the Kit Car thingy, so please forgive me if I'm preaching to the converted here.
Apart from this Forum to get some really good advice from those with better mechanical knowledge and ability than me, you may be able to get an idea of what's available from the ads in Kit Car Magazine,
Which Kit Mag, some of the custom mags (from memory, ads for recalibrating speedos), Classic Ford Magazine, catalogues from specialist suppliers ie Europa Specialist Spares etc.
You're right! An electronic speedo does cost ten times as much as Ian's suggestion, but I guess to put it into perspective, they're about the same price new, as a cable driven one. (unless you go down the scrappy/e-bay route and the like to get a recycled one)
Europa sell them and years ago we used to get a club discount......sorry,don't know if we still do, but as they say, every little helps!
Hope this is of some use to you or any other newcomer to the club.
Regards..........Driftwood
Apart from this Forum to get some really good advice from those with better mechanical knowledge and ability than me, you may be able to get an idea of what's available from the ads in Kit Car Magazine,
Which Kit Mag, some of the custom mags (from memory, ads for recalibrating speedos), Classic Ford Magazine, catalogues from specialist suppliers ie Europa Specialist Spares etc.
You're right! An electronic speedo does cost ten times as much as Ian's suggestion, but I guess to put it into perspective, they're about the same price new, as a cable driven one. (unless you go down the scrappy/e-bay route and the like to get a recycled one)
Europa sell them and years ago we used to get a club discount......sorry,don't know if we still do, but as they say, every little helps!
Hope this is of some use to you or any other newcomer to the club.
Regards..........Driftwood
i did a quick search for "speedo calibration" and found the ever present speedy cables who offer a speedo calibration service for "from 45 quid"
www.speedycables.co.uk/
i used them a few years ago for a speedo cable for a fiat/ford speedo cable
have a read of what you have to do first as thats quite involved too
you need to give them some very specific info
another possible option
some speedos have adjustments on them if you can find a spare maybe have a twiddle with it loose in the dash see if you can get it any closer
pulled needle off a viva speedo and lost the pre load on it
managed to use long nose pliers to hold speedo shaft and rotate it to move needle till it read approximately correctly [adjust drive car at 30 with another car adjust some more etc]might be worth a try as its a free way of doing it
www.speedycables.co.uk/
i used them a few years ago for a speedo cable for a fiat/ford speedo cable
have a read of what you have to do first as thats quite involved too
you need to give them some very specific info
another possible option
some speedos have adjustments on them if you can find a spare maybe have a twiddle with it loose in the dash see if you can get it any closer
pulled needle off a viva speedo and lost the pre load on it
managed to use long nose pliers to hold speedo shaft and rotate it to move needle till it read approximately correctly [adjust drive car at 30 with another car adjust some more etc]might be worth a try as its a free way of doing it
Dr, that link looks good if all else fails, and £45 is a lot better than £150+ for an electronic speedo! Still I'd want a nice clean speedo fgor them to calibrate not the old knackered looking thing thats in the dash at present!
My rev counter I think is miles out as well. will test that this weekend with a engine analyser. Mind you Maplin do a large digital rev counter kit for just £20!
My rev counter I think is miles out as well. will test that this weekend with a engine analyser. Mind you Maplin do a large digital rev counter kit for just £20!
There is another way Steve.
What I did is strip the instrument pack until I could get to the clock faces.
Then print of some new ones on sticky back inkjet paper (epson do it) and stick them over the clocks.
Why? Easy! You can position the numbers to roughly suit your speedo/wheel/tyre combination.
Okay its not perfick, but it has the added bonus of improving the appearance of the old dash.
Yours,
Swizz...
P.S:- one other thing, be delicate. The intruments are, and are probably 30 odd years old also.
What I did is strip the instrument pack until I could get to the clock faces.
Then print of some new ones on sticky back inkjet paper (epson do it) and stick them over the clocks.
Why? Easy! You can position the numbers to roughly suit your speedo/wheel/tyre combination.
Okay its not perfick, but it has the added bonus of improving the appearance of the old dash.
Yours,
Swizz...
P.S:- one other thing, be delicate. The intruments are, and are probably 30 odd years old also.
Hi DW, must admit very impressed with your new clock faces - a logical way to sort the problem of false readings without the great financial outlay... and as you say, you can actually perk up the look of the dash to boot!
That's the way I'm going then. Just a matter of doing a few road tests to mark some fairly accurate speeds on my clock face now!
Great stuff. Thanks.
That's the way I'm going then. Just a matter of doing a few road tests to mark some fairly accurate speeds on my clock face now!
Great stuff. Thanks.
gasser said:
Theres a guy called DAVE OSTICK . (Will sort number if you need it) who re calibrates speedos he has done a couple of mine ,and charges about £38 . He has an informative website .........
Hello Gasser...may be an idea to put Dave Ostick's telephone number and website address on here as recommendations from fellow members are always useful at sometime or other.
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