The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: Jeremy R65 on April 07, 2015, 04:35:10 PM

Title: Ticking speedo?
Post by: Jeremy R65 on April 07, 2015, 04:35:10 PM
Gentlemen.  I rode my R65 for the first time tonight, out with the Vintage Motorcycle Club.  We are rapidly forming a BMW sub-section!  When I wheeled the bike back into the garage afterwards I noticed a ticking or clicking sound that seems to originate from the speedo area.  Don't remember hearing that before. Is this usual or is there some other hideous BMW gremlin out there that I should know about? Thanks.
Title: Re: Ticking speedo?
Post by: Bob_Roller on April 07, 2015, 05:16:22 PM
May want to try lubricating the speedometer drive cable, I use a light machine oil .
Title: Re: Ticking speedo?
Post by: montmil on April 07, 2015, 05:26:58 PM
Confirm the knurled cable anchor-to-speedo is snug but not overly tight. And as Bob Roller mentioned, some light machine oil may quiet the drive cable.

I usually make a small funnel of aluminum foil folded around the cable. Maybe a little tape at the bottom. Dribble in a little oil every 30 minutes or so as it may take some time for the oil to seep down.

A short ride will also help distribute the lubricant.
Title: Re: Ticking speedo?
Post by: Tony Smith on April 07, 2015, 05:36:35 PM
Ticking can also indicate that something magnetic has got loose inside the instrument and has lodged in the cup. For practical purposes there is nothing you can do about it other than hope that it wears away and stops.
 
I disagree with Monte regarding the correct lubricant for speedo cables, my experience tells me that a good Low Melting Point, Molly grease is the thing to use, you get your fingers good and dirty smearing it on the cable, however do not lubricate the last 5 inches or so as you do not want grease working its way into the "works".
Title: Re: Ticking speedo?
Post by: montmil on April 07, 2015, 05:44:40 PM
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I disagree with Monte ...

Bob, too? ::)
Title: Re: Ticking speedo?
Post by: nhmaf on April 07, 2015, 07:54:19 PM
I've generally seen speedo cables lubed with grease, too.

I would first try lubing the cable to see if that had any improvement on things.   You could also try disconnecting the cable on both ends and seeing how smoothly it can turn with nothing attached ..

It could also be that you've got a bit of misalignment in the worm gear and drive gear for the odometer section and it isn't meshing smoothly.   If you are very handy working on small, delicate mechanisms there is info on the net to do some of the work, or you could have it serviced by someone - we even have members here who does this sort of work.
Title: Re: Ticking speedo?
Post by: Tony Smith on April 07, 2015, 09:25:56 PM
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I disagree with Monte ...

Bob, too? ::)


All right then, both of you, singly or in a bunch.......

The problem with light machine oil is that it is not going to hang around long and will either dribble allover the back of the gearbox, or pollute the gearbox oil.
Title: Re: Ticking speedo?
Post by: Luca on April 07, 2015, 10:14:59 PM
If you want a better idea of where the sound is coming from, disconnect the cable from the instrument and see what happens.  If it's quiet, the noise is north of the instrument.  If the noise persists, it is south of the instrument.
Title: Re: Ticking speedo?
Post by: Barry on April 08, 2015, 02:47:19 AM
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you want a better idea of where the sound is coming from, disconnect the cable from the instrument and see what happens.If it's quiet, the noise is north of the instrument.If the noise persists, it is south of the instrument.  

And if after disconnection the noise stops then don't reconnect the cable again until you have someone look at the speedo.  If the ticking is the speedo cup starting to contact the rotating magnet it can do expensive damage to the mechanism if it makes a more substantial contact.  

If a member here Wirespokes sees this post he will give you better advice as to the possible cause.
Title: Re: Ticking speedo?
Post by: Bob_Roller on April 08, 2015, 08:19:27 AM
The members that grease the speedometer drive cable, how do you get the cable out of the outer sheath ??

All three of my R65's have swaged brass keepers that prevent the cable from coming out .
Title: Re: Ticking speedo?
Post by: montmil on April 08, 2015, 08:22:53 AM
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The members that grease the speedometer drive cable, how do you get the cable out of the outer sheath ??

All three of my R65's have swaged brass keepers that prevent the cable from coming out .

OK, greasers. Question me that!  ;D
Title: Re: Ticking speedo?
Post by: marcmax on April 08, 2015, 09:34:44 AM
I'm going to step back from this one. Once the oil cans and grease guns come out I don't want to get caught in the crossfire.   [smiley=rifle.gif]
Title: Re: Ticking speedo?
Post by: suecanada on April 08, 2015, 09:53:08 AM
Be nice to zero in on where the sound is defintely coming from....maybe could be as simple as the ticking of metal as the bike cools down. Just a thought, remembering the KISS theory.
Title: Re: Ticking speedo?
Post by: montmil on April 08, 2015, 12:05:27 PM
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I'm going to step back from this one. Once the oil cans and grease guns come out I don't want to get caught in the crossfire.   [smiley=rifle.gif]

You're safe and good to go, Marc.

Just today, on the Facebook Airheads Beemer Club page, some guy was advising an R65 owner to adjust his swinging ATE calipers for better braking. Seriously? Another suggested adding a handlebar-mounted master cylinder. And there was a photo of the '79 R65 in question right there!

Not everything you read on the Internet may be true.
                                                              -- Abraham Lincoln
Title: Re: Ticking speedo?
Post by: marcmax on April 08, 2015, 01:26:43 PM
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maybe could be as simple as the ticking of metal as the bike cools down. Just a thought, remembering the KISS theory.

Mine sounds like someone dropping bb's into a tin can for half an hour after a day of riding.
Title: Re: Ticking speedo?
Post by: Bob_Roller on April 08, 2015, 01:32:29 PM
You can remove the speedometer drive cable from the transmission and put it in the chuck of a reversible drill motor and rotate the cable .

See if you can duplicate the noise that way .
Title: Re: Ticking speedo?
Post by: montmil on April 08, 2015, 03:14:52 PM
Ticking, you say?

Reminds me of an old gag in a Pink Panther movie:

Wot's that ticking?

   Could be a bim.

Wot kinda bim?

   The exploding kind!
Title: Re: Ticking speedo?
Post by: nhmaf on April 08, 2015, 10:22:26 PM
I admit I haven't greased my R65 speedo cable in some time.   I do grease my Kawasaki speedo cable each year (it gets more miles put on it) and that can slide out from one end, anyway.    It was also heavily greased rom the factor when I bought it new (original cable broke).

I think with the airhead cables that some success can be had with a rubber tipped grease gun, like what is used for swing arm bearing lube, pulling the swaged end out a bit and jamming the rubber tip down into the opening.    I'm not sure now... I suppose this will be the year to figure that out!
Title: Re: Ticking speedo?
Post by: Jeremy R65 on April 09, 2015, 02:02:18 AM
Thanks to you all for the advice.  At present I am rushing to paint and varnish my little yacht sat on the drive before the lovely weather fades, but I did disconnected the cable and there was no click when I moved the bike; suggesting speedo head. I lubricated the cable with some engine oil but it did not seem too bad anyway. However, I will ride it before making a final diagnosis as the click may have gone as the bike cooled down (?) If I need the services of one, can one of the UK members recommend a speedo repairer who does BMW stuff?  Thanks again.  
Title: Re: Ticking speedo?
Post by: Tony Smith on April 09, 2015, 03:15:22 PM
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The members that grease the speedometer drive cable, how do you get the cable out of the outer sheath ??

All three of my R65's have swaged brass keepers that prevent the cable from coming out .

Something that the Actress said t the bishop does occur to me....

Suffice it to say, you are doing it wrong.

If we call the end of the cable that goes into the speedo "top" then you pull the cable out from the top.

Dunno what is in the RS - never had it out, The R65/80 and R65 both have recent Motobins Repops and they come out as described above. I also have a very noisy Ex-1979 R65/80 cable sittting on a shelf, genuine BMW and it comes out form the top.

In fact thinking about it, I reckon this is like the two Irishmen building a barn. Paddy notices that Mick is throwing half the nails away and asks why.

"bloody point is on the wrong end" says Mick.

OK, greasers. Question me that!  ;D