Speedomter Accuracy (or adjustment)


Information and questions on GL1500 Goldwings (1988-2000)
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BullCBX
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1982 CBX

Speedomter Accuracy (or adjustment)

Postby BullCBX » Mon Jun 09, 2014 1:31 pm



When trying to take the wing out a couple of weekends ago, the wife and I noticed a strange noise coming from the front end. Took the wing back to base and hopped on the FJR (it is nice having more than one ride). After a little investigation the next weekend, I found the speedo cable was bad. Ordered a new one and thought I would go ahead and get the LED bulbs needed for the instrument as I knew I would never get my hands up under the dash to unscrew the speedo cable. So this weekend I took everything apart and found a small issue with my speedometer. When "at rest", the needle is not touching the peg at 0. It actually rests at about 5 MPH. I believe this is related to why my speed always seem high compared to the traffic around me. I can lightly touch the needle and it will move to the pin without issue, but once released, will drift back to around 5 MPH. Would have to assume there really isn't a way to "fix" this, but thought I would ask the collective. Only way I see it is to remove the needle and reattach but not really sure I want to risk it. Any other suggestions?



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virgilmobile
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Re: Speedomter Accuracy (or adjustment)

Postby virgilmobile » Mon Jun 09, 2014 3:23 pm

I've never been into the spedo but most meters have a spring loaded needle.
On my volt meter,the frame connection of the spring is adjustable so I can"zero" the needle.Perhaps the spedo has the same ability?

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BullCBX
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Re: Speedomter Accuracy (or adjustment)

Postby BullCBX » Mon Jun 09, 2014 3:34 pm

I looked at the spring but it is a very fine rotational (torsion) spring (like a spring in an old thermostat) and I did not see anyway to adjust. One end is fixed to the needle shaft and the other end is looped over a fixed pin stop. I'll study it a little more tonight, but sure didn't see an easy way to adjust.

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virgilmobile
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Re: Speedomter Accuracy (or adjustment)

Postby virgilmobile » Mon Jun 09, 2014 6:04 pm

I'm not saying that there is an adjustment,just maybe.
Perhaps the meter/needle was "G forced" into the wrong position.
I would guess that if it is 5 mph off the entire range,the needle would have had to slip on the shaft.If the reading is progressively worse,the "pre-load" spring is in the wrong position.
This info may give a hint to the problem.

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redial
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Re: Speedomter Accuracy (or adjustment)

Postby redial » Tue Jun 10, 2014 9:54 pm

If you cannot work it out, you could always take it to an Instrument Fitter. They usually have the skills necessary to make adjustments to things like that. Instrument Fitters are usually difficult to find, so you may have to post off the instrument to somewhere, like I recently did for the speedo in the campervan.
Len in Kapunda

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Uncle Fester
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Re: Speedomter Accuracy (or adjustment)

Postby Uncle Fester » Tue Jun 10, 2014 11:06 pm

I do not know anything about them personaly, but here you go. . . .

http://www.hampspeedometer.com
Reputation is what other people know about you. Honor is what you know about yourself. Our stress about it happens when the two aren't the same. Be true to yourself and to hell with what everyone else thinks!

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cbx4evr
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Re: Speedomter Accuracy (or adjustment)

Postby cbx4evr » Wed Jun 11, 2014 8:52 am

Personally I wouldn't touch it and just live with the error. And why didn't you hop on your CBX instead of the FJR? Poor neglected CBX.
"It´s a friggen motorcycle, it´s not supposed to be comfortable, quiet or safe. The wind noise is supposed to hurt your ears, the seat should be hard and riding it should make you s**t your pants every now and then. "

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BullCBX
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Re: Speedomter Accuracy (or adjustment)

Postby BullCBX » Wed Jun 11, 2014 9:04 am

Have basically decided just that. I reassembles the gauge cluster last evening after getting all of the new LEDs installed. Having the indicated speed be off is not an issue for me. Just thought if there was a fix, I would try it while I had the cluster apart. As far as the CBX, well it is in a state of suspended animation (long term storage). It is my future retirement project, so for now it just sits neglected under its cover. One day hope to put her back on the road, but have way too many tasks on the list (including getting this darn wing truly road worthy so the wife and I can take some long trips.




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