|
hoppy
|
 |
« on: October 21, 2014, 06:03:02 AM » |
|
While filling up, I saw my tach move, and it slowly went from 0 all the way around to about the 7'Oclock positon while the ignition was off and I was putting gas in.
When started, it continues clockwise until it pegs under the stop needle, at 8:30 or so. When off, it returns to 7.
There is no indication of an electrical issue like a blown fuse. I still have brakes, turns, horn, and the indicator lights in the tach.
It acts like there might be some return spring mechanism inside that has failed. Not knowing how these things are built, thought I'd ask if anybody else has had something like this, or might have a guess.
I was on a trip at the time, and have added probably 700 miles since, with no apparent issues.
Is there some wiring to the ignition system that needs looking at, or is this more likely just a physical problem with the instrument?
Hoppy
|
|
|
|
|
Logged
|
|
|
|
PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
|
|
« Reply #1 on: October 21, 2014, 08:02:16 AM » |
|
I think your best bet is to find another replacement for it. I don't believe there is an electrical issue, but a mechanical one as you suspect. It is broke, you have nothing to lose by taking it apart and seeing if there is something you can do to fix it. Maybe the needle just slipped on the shaft? It is strange that you saw it happen tho.....
|
|
|
|
|
Logged
|
John  |
|
|
|
Ricky-D
|
|
« Reply #2 on: October 21, 2014, 08:07:46 AM » |
|
Before you try some destructive measure,
get a good powerful magnet and try to
get the needle back to where it belongs.
Others have had some problems as you,
and have had some success with the
magnet fix.
***
|
|
|
|
|
Logged
|
2000_Valkyrie_Interstate
|
|
|
PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
|
|
« Reply #3 on: October 21, 2014, 08:48:14 AM » |
|
Before you try some destructive measure,
get a good powerful magnet and try to
get the needle back to where it belongs.
Others have had some problems as you,
and have had some success with the
magnet fix.
***
Please explain how this magnet fix works and puts the needle back in the correct position?? Have you ever done this? |
|
|
|
|
Logged
|
John |
|
|
Daniel Meyer
Member
Posts: 5493
Author. Adventurer. Electrician.
The State of confusion.
|
|
« Reply #4 on: October 21, 2014, 10:29:39 AM » |
|
I've had this happen, yep, you can get it back with a magnet. By chance, did you have a magnetic tank bag that you tossed up/out of the way when this happened?
I did it twice before I realized the magnet was what did it.
|
|
|
|
|
Logged
|
CUAgain, Daniel Meyer  |
|
|
|
hoppy
|
|
« Reply #5 on: October 21, 2014, 11:54:45 AM » |
|
I've had this happen, yep, you can get it back with a magnet. By chance, did you have a magnetic tank bag that you tossed up/out of the way when this happened?
I did it twice before I realized the magnet was what did it.
Pure brilliance! Yep I got such a bag, and when I'll get home I'll dig it out and see if I can reverse the effect. (you would think I would know better after having caused a similar incident by taking a "shakey" flashlight up in a small airplane once.....) Jeez. |
|
|
|
|
Logged
|
|
|
|
PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
|
|
« Reply #6 on: October 21, 2014, 03:12:42 PM » |
|
Ok..... I'm still wanting to know how a magnet can move the tach needle out of or back into its normal area?
|
|
|
|
|
Logged
|
John |
|
|
|
Icelander
|
|
« Reply #7 on: October 21, 2014, 04:47:36 PM » |
|
I know that speedos are driven by the hall-effect of a magnet spinning on the end of the speedo cable and a small amount of ferrous material in the "cup" at the center of the speedometer needle.
I suspect that the tach is driven by voltage and the tank bag magnet just changed the polarity of the ferrous bit in the needle.
Just my S.W.A.G.
Kendall
|
|
|
|
|
Logged
|
1998 Valkyrie Tourer.
VRCC Member #36337
|
|
|
|
indybobm
|
|
« Reply #8 on: October 21, 2014, 08:21:57 PM » |
|
I think the magnet in the tank bag 'picked up' the end of the tach needle and dropped it on the wrong side of the needle stop. You can use a magnet to 'pick up' the end of the needle again and move it over the needle stop.
|
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
KY,Dave (AKA Misunderstood)
Member
Posts: 4146
Specimen #30838 DS #0233
Williamsburg, KY
|
|
« Reply #9 on: October 22, 2014, 02:20:41 AM » |
|
I think the magnet in the tank bag 'picked up' the end of the tach needle and dropped it on the wrong side of the needle stop. You can use a magnet to 'pick up' the end of the needle again and move it over the needle stop.
I've never had it happen to me but know of others and this was the situation.  |
|
|
|
|
Logged
|
|
|
|
|
hoppy
|
|
« Reply #10 on: October 22, 2014, 06:05:48 AM » |
|
CLOSE THE TICKET! That was the answer. got the bag out last night, and after a bit of an arcade game, got it back around and all is well. I'll say it was a lot easier to screw up than to fix, but definitely a thing. Thanks ! Hoppy |
|
|
|
|
Logged
|
|
|
|
PAVALKER
Member
Posts: 4435
Retired Navy 22YOS, 2014 Valkyrie , VRCC# 27213
Pittsburgh, Pa
|
|
« Reply #11 on: October 22, 2014, 07:05:45 AM » |
|
Gotta remember that.... Never had experience with this, and I would have thought the needle was fixed on the shaft more so. Learn Sumtin new everyday..... Probably forget more than I remember nowadays tho.
|
|
|
|
|
Logged
|
John |
|
|
|
indybobm
|
|
« Reply #12 on: October 22, 2014, 07:58:02 AM » |
|
Gotta remember that.... Never had experience with this, and I would have thought the needle was fixed on the shaft more so. Learn Sumtin new everyday..... Probably forget more than I remember nowadays tho.
The magnet picks up just the end of the needle, so that it can hop over the stop. |
|
|
|
|
Logged
|
So many roads, so little time
VRCC # 5258
|
|
|
Daniel Meyer
Member
Posts: 5493
Author. Adventurer. Electrician.
The State of confusion.
|
|
« Reply #13 on: October 22, 2014, 08:45:32 AM » |
|
I think the magnet in the tank bag 'picked up' the end of the tach needle and dropped it on the wrong side of the needle stop. You can use a magnet to 'pick up' the end of the needle again and move it over the needle stop.
On mine, it didn't "pick it up" over the pin...the magnetic field ran the needle all the way around. Once past a certain point it stayed there. I used a tank bag magnet to run it back the other way. The tachs are electronically driven...and apparently magnetically driven. It's quite easy to move them around with a magnet...though I would not recommend doing so unless you have to as it might incur damage...(mine didn't though...still accurate). Bit if trivia...I did this TWICE...and bought new tachs both times! When it happened the third time I saw it happening and grabbed the tank bag and pulled it away (I'd tossed it on the handlebars to get it out of the way for refueling). That was an aha! moment and I then used the tank bag magnet to "repair" my other two tachs...and yep, I changed them out to see if they were still good! |
|
|
|
|
Logged
|
CUAgain, Daniel Meyer |
|
|
Daniel Meyer
Member
Posts: 5493
Author. Adventurer. Electrician.
The State of confusion.
|
|
« Reply #14 on: October 22, 2014, 08:47:23 AM » |
|
CLOSE THE TICKET! That was the answer. got the bag out last night, and after a bit of an arcade game, got it back around and all is well. I'll say it was a lot easier to screw up than to fix, but definitely a thing. Thanks ! Hoppy |
|
|
|
|
Logged
|
CUAgain, Daniel Meyer |
|
|
|
