1977 R100RS Clock

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Harleyman
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1977 R100RS Clock

Postby Harleyman » Sun Mar 14, 2021 9:08 pm

I know these are like hens' teeth, especially if they actually work.

Mine doesn't, but I can live with that; bigger problem is that I went out on the bike a while back and the bezel and glass came off. Does the one off the later ones with the green dial fit, and is it removable? If so has anyone got a knackered clock they'd sell me so I can swap them over?

Thanks in advance.
1977 R100RS
1988 R80RT
Several old Harleys and a Honda CB350

dacsceilings
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Re: 1977 R100RS Clock

Postby dacsceilings » Mon Mar 15, 2021 12:05 pm

Any 52mm clock will fit , mine is from a Porsche

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andyb
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Re: 1977 R100RS Clock

Postby andyb » Mon Mar 15, 2021 7:16 pm

I think they are made by VDO
AndyB
R100R work-day-bike
Moto Guzzi V7 Stone fun-day-bike

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Rob Frankhamr
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Re: 1977 R100RS Clock

Postby Rob Frankhamr » Mon Mar 15, 2021 7:36 pm

OEM clocks used by BMW were made by Motometer. Some late 'R80RT machines (which came without clock or voltmeter as standard) were fitted with VDO clocks when they were 'upspecced' at dealerships in the UK. As far as I'm aware, VDO meters were never fitted by BMW in factory.

Yes, VDO meters will fit but you should bo for the marine range. The other ranges are made for cars and other cabbed vehicles so they aren't waterproof.

Rob
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Harleyman
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Re: 1977 R100RS Clock

Postby Harleyman » Mon Mar 15, 2021 7:42 pm

Thank you very much gents.

I had also posted a request on the VMCC forum and a member has very kindly offered me a working VDO clock gratis and for free; the spirit of motorcycling mutual help is still running strong.
1977 R100RS
1988 R80RT
Several old Harleys and a Honda CB350

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george baker
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Re: 1977 R100RS Clock

Postby george baker » Mon Mar 15, 2021 9:50 pm

Hi
Harley, please dont just dump to the non-worker, next time I see the clock maker (after April 12th) I will ask if he is prepared to refurbish it and what he would charge -- that way you will get an asset you can pass on

George
Member 21, R100R, and an under used K75

Mjolinor
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Re: 1977 R100RS Clock

Postby Mjolinor » Mon Mar 15, 2021 10:06 pm


dump

George
I don't know this word?

Maybe that is why I only have room for one person in my 20' x 16' mancave.

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george baker
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Re: 1977 R100RS Clock

Postby george baker » Tue Mar 16, 2021 12:27 pm

Hi
same in my garage, office, and workshop--my wife resists any further expansion.

George
Member 21, R100R, and an under used K75

John Marshall
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Re: 1977 R100RS Clock

Postby John Marshall » Tue Mar 16, 2021 6:26 pm

With a working clock you can look forward to keeping half an eye on the battery charge if not riding. Both my previous two had a fairing based clock but the current had no fairing so I had to lash out for pods and made my own looms.Exposed to the elements nonetheless.
A friends clock was not working but luckily a tree fell on him after which the clock sprang into action.
I hate not having a clock on my other bikes . Have used cycle devices to get around it.
John

Harleyman
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Re: 1977 R100RS Clock

Postby Harleyman » Tue Mar 16, 2021 6:42 pm


A friends clock was not working but luckily a tree fell on him after which the clock sprang into action.


Bit extreme; most of us would have just changed the fuse. :grin:

George, yes please if you would. Mine being a 77, as you know the white faced clocks are pretty rare and it would be nice to have a functional one.

I never throw ANYTHING away!
1977 R100RS
1988 R80RT
Several old Harleys and a Honda CB350

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george baker
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Re: 1977 R100RS Clock

Postby george baker » Tue Mar 16, 2021 11:11 pm

Hi
harley mail me next month to jog my memory, Watchmakers young, good, pricey, but busy

Ive been waiting months to get in the speedo man's list of jobs so know how it is.

George
Member 21, R100R, and an under used K75

Harleyman
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Re: 1977 R100RS Clock

Postby Harleyman » Wed Mar 17, 2021 10:00 am

I got lucky with my speedo; the bike was imported from Denmark so had a kph one, which worked as a speedo but the odometer had given up the ghost, as they do.

Managed to source a good working MPH one from a guy in Norway. Still have the guts of the old KPH one if it's any good to the speedo man for spares.
1977 R100RS
1988 R80RT
Several old Harleys and a Honda CB350

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george baker
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Re: 1977 R100RS Clock

Postby george baker » Wed Mar 17, 2021 2:49 pm

Hi
I will do my best to remember to tell him

George
Member 21, R100R, and an under used K75

Harleyman
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Re: 1977 R100RS Clock

Postby Harleyman » Wed Mar 17, 2021 9:59 pm

Well, I received the new clock, fitted it, works fine.

One slight issue; the internal light is on all the time; good job I noticed or I'd have flattened the battery. Both clocks seem to earth to the casing, but the bulb holder on the donor clock has two wiring connections so I assume it has a separate earth for the light

I have left it disconnected for now, it's not a big deal.
1977 R100RS
1988 R80RT
Several old Harleys and a Honda CB350

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Rob Frankhamr
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Re: 1977 R100RS Clock

Postby Rob Frankhamr » Thu Mar 18, 2021 2:10 am

The connections for the instrument light should be grey/black for power from the 'sidelight' circuit and brown to the ground. In principal, the live should go to the central connectot on the bulb socket and the ground to the outer case of the bulb. It will work either way round but it is always good practice to follow that convention. With these connections, there should be no way that the bulb can light unless the sidelight circuit is live...

Rob
Robin Frankham
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george baker
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Re: 1977 R100RS Clock

Postby george baker » Sat Jun 12, 2021 12:01 am

Hi
sad news the clock repairer is not interested, I was told being outside, corrosion gets to the winder mechanism (on that type) and even fitting new points does not give a good connection.

George
Member 21, R100R, and an under used K75

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r75boxer
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Re: 1977 R100RS Clock

Postby r75boxer » Sat Jun 12, 2021 2:33 pm

While this thread is on glass repair, does anyone know how to fasten the aluminum ring with glass to the instrument cluster of a /6 or /7? Black silicon adhesive?

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'51 R67

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r75boxer
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Re: 1977 R100RS Clock

Postby r75boxer » Tue Jun 15, 2021 12:22 am

Either no one has done this before or everyone is out riding. I'm guessing the latter. So, I've decided to fasten the glass to the face of the cluster housing, and not silicon the glass to the metal ring. Fingers crossed. Under the advice of a local shop selling garage supplies I decided to use Dowsil 732 (black in colour).

Kevin
Dowsil 732.jpg
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'02 R1150RS
'87 R65
'71 R75/5
'51 R67

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SteveD
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Re: 1977 R100RS Clock

Postby SteveD » Tue Jun 15, 2021 11:13 am

It's difficult because the ring is very soft and easy to destroy.
I expect the glass will need something to hold it on...and to seal it too I guess.

I think the ring is more a cosmetic finish thing. It needs to be crimped on and that's the very fiddly task.
Cheers, Steve.
1982 R100RS, 2006 K1200R.

Stay horizontal!

https://stevedoyle.smugmug.com/organize/R100RS/R100RS
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r75boxer
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Re: 1977 R100RS Clock

Postby r75boxer » Wed Jun 16, 2021 3:28 pm

Well, it's done. I put a very thin bead of 732 on the surface of the cluster, smoothed it out with a small slot screw driver and then pressed the glass and metal ring onto the cluster. The last part was indeed fiddly but it mostly did 'snap' into place once I tapped one section with a wooden dowel. I then installed so-called eyebrow. Looks like new. The 732 bead looks continuous so I'm hoping it is waterproof.

Kevin
'02 R1150RS
'87 R65
'71 R75/5
'51 R67


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