26 replies to this topic

[Alex_B]

Right latest question, my speedo didnt work when i bought the car, got round to fixing it yesterday or so i thought, the problem was the speedo drive gear had rounded off inside and thus didnt stay on the shaft, fitted a new old shaft off my spare engine, and went for a drive, it still didnt work, so i am assuming that its done the same.

the old gear has a dent on one of the teeth which tells me something is stopping it spinning thus rounding off the inside and the shaft is just spinning.

I dont think i can fix it without taking my engine out to gain access so am planning to fit an old bike computer i have, the actual question I need help with is my mileometer, it is going to stay at its current mileage obviously and my computer will record mileage so thats not a prob but for MOT's it will have the same mileage every year, would that constitute a fail or something ?

sorry for my ramblings and hopefully someone can decode it and help :)

Thanks in advance

[100ev8]

MOT says you have to to have a speedo , nothing about it working

[bmcecosse]

Where does it say you have to have a speedo?? You don't need to have a speedometer or an odometer to pass the MOT. But legally, (Construction & Use ) you must have a speedo that is accurate at 30 mph to within +/- 10%. But it's not part of the MOT.

Edited by bmcecosse, 14 May 2012 - 08:46 PM.

[Alex_B]

well this one is adjusted to my rolling circumference, and when fitted will check its accuracy to a GPS and my mums BINI so will know how accurate it is but with caterhams they use these quite often and are very accurate ( at 60 mph one guy measured it was out 0.26% out and at 80mph 0.18% )

and ok I wont worry too much just keep a track of my miles and add them to my present speedo reading and when my new engine gets built in the winter I will have a working speedo again hopefully :)

Thanks for the help! :)

[100ev8]

sorry but you do need one
http://www.transport...lsandguides.htm

[100ev8]

section 6.7 speedometer







The M.O.T. Inspection ManualIssue Date 01 January 2012 InformationMethod of InspectionReason for RejectionThis inspection applies to allvehicles first used on or after 01October 1937.If the dial glass is cracked, it is not aReason for Rejection, providing:· there is no possibility of misreadingthe speedometer or · there is no possibility fouling of theindicator needle or · the cracked glass does not create asafety hazard.A Tachograph is an acceptablealternative to a speedometerproviding it satisfies the requirementsof this inspection.1.Check that a speedometer is fitted.2.Check the condition of thespeedometer.3.Check that the speedometer canbe illuminated.1.Speedometer not fitted.2.Speedometer incomplete, clearlyinoperative or the dial glassbroken or missing.3.The speedometer cannot beilluminated.

Edited by 100ev8, 14 May 2012 - 09:00 PM.

[Alex_B]

well i do have one, its not been taken out, and lights up, it actually passes all that criterea it just dosnt show speed, thats where my bike speedo comes in, and also it illuminates and is secure ect so i will pass the mot :)

[100ev8]

yep thats all you need

[bmcecosse]

Wow! That must be a new one - thanks for showing us - no need to be sorry. And it must have a dial glass and be able to be illuminated!! And indeed it must be working - reason for fail is if 'clearly inoperative' - ie if it doesn't work when the wheels are turning..........I would say it is 'clearly inoperative'....

[100ev8]

been testing for 22 years :) . anything in that manual that has a black line on the left is new . to be honest all of the manual is bull poo as most things have to be pass and advise and then we can tick the box to say "in my opinion its dangerous" ??????

oh and we need to prove its inoperative . meaning we must be able to clearly see that a cable is not connected . no road test , otherwise it passes

Edited by 100ev8, 14 May 2012 - 09:22 PM.

[Alex_B]

the thing is, unless the mot tester drives it in then its not clearly in operative as unless you drive it then you wouldnt know it didnt work, bit of a grey area.

[Pooler70]

Recently went through the same thing and I believe it is a new regluation

[hunterg30]

thought the speedo would show up when it goes on the rolling road for testing your brakes

[Alex_B]

but they wont be looking it most likely, just the brake power screen outside the car ?

[Ivor Badger]

Wow! That must be a new one - thanks for showing us - no need to be sorry. And it must have a dial glass and be able to be illuminated!! And indeed it must be working - reason for fail is if 'clearly inoperative' - ie if it doesn't work when the wheels are turning..........I would say it is 'clearly inoperative'....

castrol quiz question. It must be accurate to within 105, be illuminated at night and visible to the driver. always liked the last one.