[Ice]

 That could work but go slow and careful.

 Repair and calibration of mechanical tachographs and speedometers is more art than science. Some of the clearances are to small to measure. Many adjustments are made by a well developed sense of feel.

[gashousegorilla]

The stop bar can be extended with solder or epoxy - at least theoretically in this IMAGINARY picture 2512B below. That can take care of stopping the indicator needle from turning below zero.

The other problem is different, because the threaded pub is solidly attached to the frame.

BUT the inner rotating cylinder, in which the end of speedo cable is inserted, moves slightly up/down - I think it is normal play of about 1 mm or <1 mm. If that gap is reduced by a very thin washer, it will stop upward movement of magnetic bowl - BUT that will also hinder its free rotation.

   Ummmmm...... Yeah, I think I see what you mean there.   Just looking at my old speedo here.  I have a bit of side to side play on that pub, and a little forward and back.   However, no in and out play on that little brass piece where the cable goes in.  Looking at your pics...I might have an issue where that long white gear is above the pub ?      Your certainly welcome to my old speedo if you think you might need it for spare parts.   I don't know.... It's been nice out. Days are getting longer ?   Good excuse to not work overtime, and maybe enjoy some good Northern Indian food after work ? 

[upintheair]

If it would be of some use, I have available the speedo from my 2015 B5 with 306 miles that is just sitting in my garage with the cable.  I put a Koso tach/speedo on last summer and am very happy with it.  Send me a pm for where to send it.

[Carlsberg Wordsworth]

BUT the inner rotating cylinder, in which the end of speedo cable is inserted, moves slightly up/down - I think it is normal play of about 1 mm or <1 mm. If that gap is reduced by a very thin washer, it will stop upward movement of magnetic bowl - BUT that will also hinder its free rotation.

I have that problem with mine, at least I now know that movement is normal. I think the cable fit is too loose once attached to the speedo itself and movement causes it to affect smooth operation on that brass bit. I've wedged some foam in there to keep the cable straight for now, so far so good.

[heloego]

I've played a lot with my truck speedo so maybe this will help. Posted in Tech Tips.

https://forum.classicmotorworks.com/index.php/topic,23509.0.html#new.

[JVS]

Well done Singh Ji  Fastest stock RE! 

[singhg5]

If it would be of some use, I have available the speedo from my 2015 B5 with 306 miles that is just sitting in my garage with the cable.  I put a Koso tach/speedo on last summer and am very happy with it.  Send me a pm for where to send it.

!! VERY MANY THANKS for sending me the speedometer with cables !!

It is of course newer version of speedo/odometer, as compared to my antique  speedo !  The new one has two large screws on its back which extend out 1.5 inches (2nd pictures below). What is the purpose of these screws ?

My OLDER speedo did not have these screws.

So my question to anyone who has similar speedo is - where do these long screws fit ? Is the bracket that holds the speedo inside the nacelle similar to mine (3rd picture), BUT with holes for screws to pass through ? Or is it a different design of bracket ?   

These long screws are at the same location where the bracket pushes the whole unit up into the roof of the nacelle (3rd picture below). My bracket has no holes for these screws.

Anyone with a picture of inside the nacelle, behind the headlight, looking up towards the speedo that shows how these screws fit and where ?

Should these screws be cut off ?

Should I drill holes in the bracket for screws to pass through ?

[gashousegorilla]

  No mounting studs on the back of my old speedo as well Singh.  However, the Koso unit I'm using does have similar mounting studs.  I just used my stock bracket and drilled out two holes for them... Then tightened down snug,with little nuts and washers.  Sorry... forget the size ?

[singhg5]

Original speedo without long screws on its back.

[singhg5]

  No mounting studs on the back of my old speedo as well Singh.  However, the Koso unit I'm using does have similar mounting studs.  I just used my stock bracket and drilled out two holes for them... Then tightened down snug,with little nuts and washers.  Sorry... forget the size ?

OK.

[upintheair]

Of course the mount was changed, this is a RE after all.  I had to modify my bracket to put the Koso unit in my 2015.

[singhg5]

The new speedometer is in the bike, after drilling holes in the bracket for mounting screws which extend deep into the nacelle. The sharp threads on the mounting screws could scrape off insulation of the electric wires by rubbing and constant bumps during riding. So I covered them with plastic tubing on them.

My G5 has bayonet type turn signal/high beam/neutral indicator bulb sockets. They fit fine in the new speedometer, which comes with wedge base bulbs sockets.

Took the bike for a short ride, around the block. The speedo dial needle was quite stable.

Thanks to forum member UNPINTHEAIR that my bike became younger with only about 300 miles on it, instead of over sshhh 40,000 miles !   

[mattsz]

Thanks to forum member UNPINTHEAIR that my bike became younger with only about 300 miles on it, instead of over sshhh 40,000 miles !   

Awesome!  (Don't worry, your secret is safe with us!)

[gashousegorilla]

  Take it easy breaking that bike in.

[retrolynn]

That worked great! You just need to put 40000 miles on it,again!