to get em more accurate?

ie if youve changed wheels, or just want em to be a bit more accurate than they are as standard.

is this a job that any old mechanic can do or does it require specialist equipment?

 

forget that mate, get GPS a neo or road angel sumthin like that, very accurate

 

they update too slow tho

 

LOL, nah mate, i had garmin streetpilot 3 deluxe and it was mega accurate and updated about 6 times a second, had it reading 176mph on my gsxr1000

 

do what ive done on my mini jim...mountain bike computer with the sensor mounted on the back wheel on a bracket,you just have to cut the 2 core wire to lengthen it ...mount the computer on dash and bobs your uncle...has odometer, average speed,highest speed,clock,timer etc and was a tenner on ebay

mark

 

I agree

 

Electronic speedos that require a pick up sensor on the wheel and that can be calibrated should be preety accurate as well.

GPS systems allways make me think some "big brother" could find out what speeds i've been doing.

 

I think 'most' of our speedo's are mechanical so would be difficult to calibrate. I know mine is 'way off'!!

I have an origin B2 though and the refresh rate is a bit slow!!

Another option is the SPA one... top speed recall etc etc bout £175 iirc.

oh, hang on......

http://www.verlinden.com/cgi-bin/web...m?sid=3K0-SI7U

 

ZVH Turbo

Nahh big bro wont find out shite because they cant use it in evidence due to the fact that the date logging does not store time and location that said speeds are reached just the route that you took

My peak speed readout on street pilot is currently 146mph plod have seen it many times and smiled

The Nope the fastest refresh rate is ONCE per second any faster than that and its NASA standard especially at six times NO WAY . However once is more than good enough

Jim you can have your speedo calibrated its preformed by unclipping the speedo cable and blu tacking a small needle/match etc on there .

You then lift the drive wheels from the ground and draw a line on the tyre wall you complete 10-20 turns of the WHEEL and someone in the car counts how many times the match goes round . This info coupled with your rolling radius will be used to calibrate your speedo

Here are some links for you smeghead

http://www.speedycables.co.uk/ go to the FAQ page


HTH

Nige

 

I re-calibrated my speedo myself by moving the needle to be reading exactly what my S6R Neo was showing

 

how far out was it m8

 

About 7mph over @ 70mph i think

 

I think if you had any doubt, you're local VOSA station could give you advice or recommend somewhere that could sort you out.

 

yeh thats what i thought, quite a lot innit, no wonder all the local boy racers tell me they get 160 out of there sapphs probs only doing 145

 

as spadge says, with most single point ajustment(zero) instruments - (like nearly all mechanical speedos) the best way is to set it so it is correct at 50 % of its range or depending on how fast yuo go etc, 50% of the useable range, rather than setting right at zero and then be gradually out the more it went up.

 

get the spa its a proper bit of kit aswell
does 060 0-100 1/4 miles recall loads of stuff
dead easy to fit and gives a true speed reading
mine was 1mph out at 168 with datron timing gear last yr

 

i have the spa , bough it about 5 years ago , still going strong also does the timing etc etc as brom says !!

 

the road angel takes ages to update


did anyone see the gt40 in the car park ( ok grass area) on national day in blue gulf type colors ( was parked near my cabrio so i understand if ya was too amazed by me m3 mirrors to look at it )

anyway he never had a speedo either, had a rev counter and a halfords speedo ( the fooking 6 quid jobby too )

thats a idea jim but tbh whats the point , cossie clocks are alot more acurate that erst clocks trust me

i was off the clock in between the p and the h of moh and i was doing 132mph , now imagine how bad i felt when the copper told me, i was like , are ya sure it was well off my clocks, think ya speedos out as i was doing 160+ officer

 

iirc you can take it to an hgv tacho/mot centre and they can do them

simon