Speedo mystery

Hi guys (and girls if there are still any here),
It's been a LONG time since I've posted, see lots of the regulars still here. Good to see that there are some constants in the universe ;o)
On to the problem... I've just purchased a '70 KG. While it runs great there are a few problems. While taking it out for it's first run after my purchase I noticed the speedo would sometimes go waaay crazy, going from a steady 50 to 65, bouncing back and forth. Am I right in assuming it's a problem with the speedo cable?
Thanks for your help.
Gary
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Beetle Bailey wrote:

It *may* be a bad cable.
Could also be the brass bushing at the cable/shaft inlet to the speedo. After ~35 years, it runs out of lube and sticks periodically.
And welcome back :-)
Speedy Jim http://www.nls.net/mp/volks /
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I would also look at the speedo bearing cap to make sure the hole hasn't rounded out after 35+ yrs
Mario Vintage Werks resto
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first, congrats on the Ghia....the problem you are having is possibly a dry speedo cable, but likely to be a dry bushing in the speedo itself...does it make a nice squeeling noise too? i've had the "pleasure" of disassembling three speedo's here lately(68 type1 speedos) and lubing them.....one had actually stopped working due to a part vibrating loose inside....if you want to eliminate the cable as the culprit an electric drill in reverse with a flexdrive and number 2 square(robertson) bit can be placed in the input and spin the speedo...if the sticking/fluttering/raising hell continues, take the speedo apart and clean and lube...
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wrote:

Is there a good way to take a later speedo apart? When I took mine apart back in 1984 for this problem, I remember prying some press fit lip open all around the perimeter of the speedo. It wasn't too pretty, although I didn't have too much problem fitting it back together later.
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Michael Cecil
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>

that is the only way...i use a very thin screwdriver that i made from a regular flat head...i ground it down thin....i can insert it under the ring with very little damage....when i put it back together i use a metal wheeled "spline tool" that is used to replace mesh screen in windows to press it back down and it usualy takes any dings out too....
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wrote:

Oh well, I hoped someone had figured out a better way. I'm going to take mine apart some time soon. It need re-lubing, the indicator light plastic needs replacing and all the bulbs and bulb holders need tweaking.
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Michael Cecil
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The screwdriver trick works fine as long as you go slow with it. I use the screwdriver to press the lip back down when I was putting mine back together(about 10 years ago...)
FYI...you can get new gels, sockets and bulbs for the speedo at the bughaus. Or you can just buy a new speedo head. ;-)
http://www.bughaus.com/beetle66.htm
Check out items H, K and M. I've never done the gels myself, so I don't know if the pointer has to be removed from the shaft to get at that part of the assembly or not.
Chris
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Wow, lots of very good info there, truly appreciated. When I find the culprit I'll be sure to let you know ;o) Thanks for the congrats and warm welcome.
Gary

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wrote:

Thanks for that link. I guess I hadn't come across them before.
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Michael Cecil
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Chris, the pointer does not need to come off to access the gels....the gels in my 68's speedo(and a few others i have disected over the years) have been held by a rubber "cap" that sits in front of the bulb openings....to change the gels i'd take the ring/glass off, then pull the fuel guage(68+), then take out the two screws that secure the speedo/odo "guts" to the casing(rear of casing)...then the rubbers i'm talking about are still connected to the casing....i can post a pic if needed for clarity, i have one apart now...<G>
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I would like to see the pics.
| | | > Check out items H, K and M. I've never done the gels myself, so I don't | > know if the pointer has to be removed from the shaft to get at that | > part of the assembly or not. | > | > Chris | > | | Chris, the pointer does not need to come off to access the gels....the gels | in my 68's speedo(and a few others i have disected over the years) have been | held by a rubber "cap" that sits in front of the bulb openings....to change | the gels i'd take the ring/glass off, then pull the fuel guage(68+), then | take out the two screws that secure the speedo/odo "guts" to the casing(rear | of casing)...then the rubbers i'm talking about are still connected to the | casing....i can post a pic if needed for clarity, i have one apart now...<G> | |
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eddie....i will snap some pics and post tonight...
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Thanks Joey, I eventually want to change mine without screwing it up.
| >I would like to see the pics. | > | > | | eddie....i will snap some pics and post tonight... | |
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here ya go Eddie...as you can see, you don't have to remove the pointer nor the faceplate to change the colored gels....hope it helps a bit...any more questions, feel free to ask.
http://hometown.aol.com/bugninva/speedo.html
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wrote:

That's cool.
Still don't understand calling them "gels" though. They were never made of gelatin, were they?
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Michael Cecil
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Michael Cecil wrote:

Check this out maybe.
http://en.wikipedia.org/wiki/Lighting_gel
Brian Laser 917 on 67 type1
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On 13 Oct 2006 08:33:51 -0700, snipped-for-privacy@gmail.com wrote:

Ah...that explains all those speedos on Broadway.
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Michael Cecil
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Thanks again. Are all of the speedo's basically the same? I forgot to mention, mine is a 65.
| > Thanks Joey, I eventually want to change mine without screwing it up. | > | | here ya go Eddie...as you can see, you don't have to remove the pointer nor | the faceplate to change the colored gels....hope it helps a bit...any more | questions, feel free to ask. | | http://hometown.aol.com/bugninva/speedo.html | |
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yours should be the same, but you won't have to remove the fuel gauge...LOL
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