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Odometer question

  • Thread starter Thread starter TheBigRed
  • Start date Start date
T

TheBigRed

Guest
Ok, I know that this can't be done on modern odometers, however I would like to know.

I purchased a 140mph speedo off of e-bay to put onto the 650.

The 650 currently has abou 17,xxx miles on it.

From the picture what I can make out the 140mph speedo has 23,4xx miles on it.

So, now for the question.

Is it possable to hook this up to, oh say a drill, and reverse the milage back to make them match? I don't want to go less than I've currently got, but I don't really want the 6,000 mile difference either.

So, if it isn't possable to do, then I guess I'm going to be working on putting 6,000 miles on the Beast here soon.. Anybody up for riding??

Amos
 
As of yesterday I put just over 4200 miles on my Blue GS since I bought it 3 months ago :)

We need to ride more! You'll be there in no time!
 
If you saw Ferris Bueller's Day Off you'd remember they tried this with the Ferrari by putting the car on jackstands and running it in reverse. As far as I know rotating the pinion backwards won't do it. The only way I can think of to match a replcement odmeter to the original one would be to open the case and do it by hand.
 
snark said:
If you saw Ferris Bueller's Day Off you'd remember they tried this with the Ferrari by putting the car on jackstands and running it in reverse. As far as I know rotating the pinion backwards won't do it. The only way I can think of to match a replcement odmeter to the original one would be to open the case and do it by hand.
Click to expand...

As I recall, in the movie they knocked it off the jack-stands and it reversed out the back of the garage, which was build on the uper side of the hill and destroyed the car. (prior to that act it had been working, but then again, it is hollywood)

You are correct Mark, I rode to work today, and I'm planning on taking the long way home. We may just have to put on 6000 miles here quickly. What a bummer.


Amos
 
I recently picked up an instrument pod of of ebay to replace an ailing gear display and wobbly oil temp guage needle. I was playing around with the speedo and found that, at least manually, the odometer reading would decrease when turned backwards. It took about 5 minutes of turning manually to see a perceptable change. I didn't try a drill (had no reason to). So I guess the answer is yes, you can.
 
Pssst,...ask for Billy down at Honest Ray's Low Mileage Previously Owned Vehicles. Tell him the magic numbers, slip him a tenner and the instrument, come back in an hour and it'll play a new tune! :wink:
 
Mr. Jiggles said:
I recently picked up an instrument pod of of ebay to replace an ailing gear display and wobbly oil temp guage needle. I was playing around with the speedo and found that, at least manually, the odometer reading would decrease when turned backwards. It took about 5 minutes of turning manually to see a perceptable change. I didn't try a drill (had no reason to). So I guess the answer is yes, you can.
Click to expand...


Thanks, that is what I was looking for.

(btw, which way is backwards? I know I could just hook up the drill and try it one direction and if the speedo registers I need to go the other direction but if you already know it would save at least a little bit of time.)

As for the going to see the low milage used car guy.. well, I don't know any of them around here.

Amos
 
If you set your drill at the equivalent of a negative 100 MPH, it will take 2.5 days of continuous running to remove 6000 miles :D

If you hook the drill to the cable rather than directly to the gauge, you should be sure the cable is well lubed
 
ptm said:
If you set your drill at the equivalent of a negative 100 MPH, it will take 2.5 days of continuous running to remove 6000 miles :D

If you hook the drill to the cable rather than directly to the gauge, you should be sure the cable is well lubed
Click to expand...

Interesting way of putting it that I hadn't though about.

Hmm.. there is a speedometer shop here in the area, perhaps if I took it to them with the bike as it sits to prove I wasn't trying to cheat anyone they could adjust it for a fee...

Or I just wait a couple more days.. (though it will take longer than 2.5 days, cause there is no way I'll run the thing without being around to keep an eye on it)

Or, as stated before I just put it in a box till I rack up another 6000 miles on the bike.

Amos
 
Dremel? Although I'm not sure if the high rpm would do any damage.

Brad tt
 
yeah, I'm sure if you were to run the speedometer at 6000 mph in reverse, it could be done much quicker. :-)

Earl

bradleymaynar said:
Dremel? Although I'm not sure if the high rpm would do any damage.

Brad tt
Click to expand...
 
Yeah, 6000 mph in reverse should take the 6000 miles off in only a couple of hrs.
 
Thats halfway what I though too. :-) / :-) :-)

E.


rphillips said:
Yeah, 6000 mph in reverse should take the 6000 miles off in only a couple of hrs.
Click to expand...
 
I just put a drill on the cable on my 750 and ran it at 1400 rpm and the speeedometer showed 30 mph.

So to get 100 mph you would have to run at about 4700 rpm.

A dremmel running at 30,000 rpm would be 640 mph, which would take about 9.5 hours to take off the 6000 miles.

To get 6000 mph, (reverse or forward) the cable would have to be turning at 280,000 rpm. 8O 8O

My guess is that neither the cable or the bearing in the speedometer was designed to take that. :)
 
I have a spare instrument cluster, maybe I should give it a try. I just need to find something that turns at 280,000 rpm.....
 
As I recall, in the movie they knocked it off the jack-stands and it reversed out the back of the garage, which was build on the uper side of the hill and destroyed the car. (prior to that act it had been working, but then again, it is hollywood
Click to expand...

Nah, it wasn't working. That's why Carmen decided to face the music and his Dad, and consequently began kicking the front of the car, which knocked it off the jackstand.
 
If it was that easy you'd see guys at used car lots running the cars around the block in reverse all day.
 
You could always run it forward until it finaly flipped to all 0's and then keep going til yopu get to the milage you want.

That could take a while though, going off of the previous posts. You would have to go 94,000 miles. If you have nothing better to do for a week or so, it should work. Save up for the electric bill ...
 
This has to be the funniest topic Ive ever read. Lol, I would try taking it to the speedo shop and asking them to reverse it.
 
Personally, I would just install the new one and write a note in the shop manual with the date and mileage of both odometers at the time. Unless you're planning on selling the bike soon, the number on the odometer doesn't really mean that much.
 
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