Changing the miles on a tachometer (NTV 650)

[Deleted]

Replacing the clocks on my bike and I was wondering if anyone knew whether the mileage could be altered (turned back) in order to match the original mileage.
The current mileage is at 5,300 miles and the replacement is at 87,800 miles.

Thanks for any help in advance.

~Josh

[McF]

No apologies for pedantry - a tachometer measures engine speed; it's the odometer that measures distance

I can understand why you might want to change the mileage, but quite honestly, why bother? Most people would believe either 80k miles or that the bike had gone around the clock.
5,300 true miles is almost unbelievable and if you wanted to assure someone that it was the correct miles, they would believe you with some simple evidence. I'd just put the clock in with 80k on and explain

May 21, 2012 20:18:08 GMT 1 groovylee said:

i'd be tempted to hook up an electric drill to an old speedo cable, and run it FORWARDS, till it is at the right mileage. not sure how long that would take though?

If you maxed the speedo needle at say 200 mph you have 7,500 miles to run which will take 37.5 hours of continuous running. I'd guess this will booger the drill

[Buzzin (^_^)]

Ehm....be sure to stay legal.....I'm pretty sure tampering with the miles/kilometres on the clock is very illegal here (NL), even if just to correct for the swap of the clocks... Only certified technicians are allowed to fiddle with them and produce the documentation required for it.

[groovylee]

Iirc it isn't technically illegal to clock a car/bike in the UK. It IS however illegal to falsely represent the mileage I.e. lie through your teeth about the fake mileage lol.

[gothitjulie]

Many moons past, (1990) I took many miles off a speedo (I'd obtained a replacement speedo from a scrapyard). I seem to remember it being quite difficult & I used the pointed needles from my dissection kit (pointed ones gripped better than the rounded end ones).

As it was a Honda speedo of the same era (1987) I dare say it would be much the same process, & I only wound the thousands & tens of thousands as it seemed a lot of work bothering with a few hundred miles between the real miles & indicated seeing as I'd had a couple of speedo cable breaks.

I also think that for higher mileage bikes without much of a service history any buyer should be well aware that the speedo probably isn't original, my NTV speedo came off the NTV I ran until a year ago, not the current one so the current one has done about 15k miles less than indicated (although many of the parts have done the full mileage). MOT certificates give a much more accurate picture of what's been going on.

[De Graaf van Salland]

Jun 10, 2012 23:11:39 GMT 1 Buzzin (^_^) said:

Ehm....be sure to stay legal.....I'm pretty sure tampering with the miles/kilometres on the clock is very illegal here (NL), even if just to correct for the swap of the clocks... Only certified technicians are allowed to fiddle with them and produce the documentation required for it.

It is on cars, trucks & busses, but not on bikes
Because we don't have an MOT on bikes here (yet....), there is no legislation about the regisitered mileage of motorbikes.

However, as Groovylee already said: it is illegal to falsely reprresent the mileage, also over here. But that's a civil case and not a criminal charge.

GvS

[kirriepete]

Uberpedantry time - it's actually 17,500 miles to be added not 7,500, so that's 84½ hours on the drill at 200mph which would certainly kill any drill. I once tried this routine with a set of clocks I got for my old CX650 - the best speed I could manage was 50 - which gives 338 hours of drill time .

Just take a timed and dated photo of the old clocks, then another pic of the replacements to show when they were changed and keep the pics with the rest of the documents like MOTs (which are a better bet for mileage than what the clocks say anyway IMHO).

Edit to add: Where in the name of [insert Deity here] did you manage to get hold of a 5,000 mile NTV? Did some hermit have it stashed in the back of his cave or something?

[hairyuk]

my ntv had 3000 miles genuine has correct paperwork
it now has 6000 miles on