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Question on the different speedometers #281331
10/28/09 4:02 pm
10/28/09 4:02 pm
Joined: Dec 2006
Posts: 536
Folsom, CA
Y
yellow_cad Offline OP
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Posts: 536
Folsom, CA
I have a 70 Bonny. My parts book shows the part no. 5001/06 but when I see ones on eBay giving that number, they have a solid silver disk in the middle of the face and a red needle. The speedo that came on my bike (that matches my tach) has a black face (no silver disk) and a white needle. Is mine correct for my year? Can anyone shed any light on what year has what configuration? Thanks.


Jim

1970 Triumph Bonneville
1973 Commando Interstate
1971 OSSA MAR
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Re: Question on the different speedometers [Re: yellow_cad] #281363
10/28/09 7:40 pm
10/28/09 7:40 pm
Joined: Sep 2009
Posts: 4
Portland Oregon
T
Thaddeus McCrory Offline
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Portland Oregon
The black faced Smiths gauges went on all but the earliest '70 Triumphs as a mid season change. There are a lot of differences like that between an early and a late '70 bonny. So yours are correct.


1940 Triumph T100
1949 BSA B34
1953 Matchless G9
1955 Motoguzzi Aerone
1965 Honda CB305
1965 Triumph T100C
Re: Question on the different speedometers [Re: Thaddeus McCrory] #281364
10/28/09 8:00 pm
10/28/09 8:00 pm
Joined: Dec 2006
Posts: 536
Folsom, CA
Y
yellow_cad Offline OP
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Folsom, CA
Thanks Thaddeus. What is the correct part number for the speedo with the black face?

Last edited by yellow_cad; 10/29/09 4:46 am.

Jim

1970 Triumph Bonneville
1973 Commando Interstate
1971 OSSA MAR
Re: Question on the different speedometers [Re: yellow_cad] #281426
10/29/09 10:35 am
10/29/09 10:35 am
Joined: Jun 2002
Posts: 10,181
Scotland
S
Stuart Offline
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Scotland
Hi Jim,

Originally Posted By: yellow_cad
silver disk

Better known as the 'grey face' speedo. 'n' tacho.

Originally Posted By: yellow_cad
What is the correct part number for the speedo with the black face?

You'll find it in any '71-on parts book and, on the Bonny and Tiger, it (with the matching tacho.) was/were fitted 'til around the end of '78.

Hth.

Regards,

Re: Question on the different speedometers [Re: Stuart] #281431
10/29/09 11:30 am
10/29/09 11:30 am
Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Tiger Offline
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Melbourne Australia
Woolridge reckons speedo SSM/00 [?] and tach RSM3003/13


1969 TR6R
7.62 x 51 is not a maths puzzle.
Re: Question on the different speedometers [Re: Stuart] #281432
10/29/09 11:34 am
10/29/09 11:34 am
Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Tiger Offline
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Melbourne Australia
Woolridge reckons speedo SSM/00 [?] and tach RSM3003/13


1969 TR6R
7.62 x 51 is not a maths puzzle.
Re: Question on the different speedometers [Re: Tiger] #281799
10/31/09 2:12 pm
10/31/09 2:12 pm
Joined: Jul 2009
Posts: 14
Virginia, USA
S
Scott Herron Offline
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Scott Herron  Offline
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Posts: 14
Virginia, USA
Rask shows the speedometer to be an SSM5007/00 and the tachometer to be an RSM3003/13.

Rask rebuilt speedometers and tachometers

Scott

Re: Question on the different speedometers [Re: Scott Herron] #281828
10/31/09 5:45 pm
10/31/09 5:45 pm
Joined: Mar 2008
Posts: 341
Lower Rhine Area, Germany
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Lower Rhine Area, Germany
Hi,

according to the "Bonnie" book from JR Nelson the instruments were changed in 1971. They got the rubber cup mounting. The SSM5007/00 speedo is for rubber cup mounting as I have this speedo on my 1972 Bonnie. The correct speedo for the 1970 model should be SSM 5001/06 (according to the book).

Edit: It should look like what they call "Grey Face":

http://www.sterlingmotorworks.com/speedo_and_tach

Ralf


Last edited by Towner; 10/31/09 5:57 pm.

Triumph Bonneville 650 T120RV 1972
Norton Commando 850 MKII 1973
Re: Question on the different speedometers [Re: Towner] #281878
11/01/09 12:01 am
11/01/09 12:01 am
Joined: Jun 2002
Posts: 10,181
Scotland
S
Stuart Offline
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Hi Ralf,

Originally Posted By: Towner
according to the "Bonnie" book

For all John's usual accuracy, 'fraid on this occasion, he was going by the parts books; other ex-factory sources for the not only the '70 650's but also the triples and 500 back Thaddeus's assertion above that the change from 'grey face' to 'black face' speedo. 'n' tacho. was part-way through the '70 season.

Hth.

Regards,

Re: Question on the different speedometers [Re: Stuart] #281907
11/01/09 11:07 am
11/01/09 11:07 am
Joined: Mar 2008
Posts: 341
Lower Rhine Area, Germany
Towner Offline
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Lower Rhine Area, Germany
Hi Stuart,

thanks for this explanation. I thought that the rubber cup instruments appeared together with the introduction of OIF in 1971. Or have the black face instruments also been mounted without rubber cups on the 70 models ?

Ralf


Triumph Bonneville 650 T120RV 1972
Norton Commando 850 MKII 1973
Re: Question on the different speedometers [Re: Towner] #281995
11/01/09 9:58 pm
11/01/09 9:58 pm
Joined: Jan 2009
Posts: 3
Nevada, USA
N
NeoDutch59 Offline
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Nevada, USA
My 1970 Bonneville was manufactured in May of 1970 and has the instruments shown below. Black face non rubber cup with chrome ring. Tachometer has part # RSM 3003/13 shown on the face. Speedometer has part # SSM5007/00 1000 shown on the face. My parts book for 1970, published September 1969, shows Part #D1930, described as Speedometer head MPH (SSM5001/06)as the part number for the speedometer. This part number D1930 will translate into 60-1930 in the newer parts numbering system


Last edited by NeoDutch59; 11/01/09 10:23 pm. Reason: added more information
Re: Question on the different speedometers [Re: NeoDutch59] #282019
11/02/09 1:10 am
11/02/09 1:10 am
Joined: Jun 2002
Posts: 10,181
Scotland
S
Stuart Offline
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Scotland
Hi Ralf,

Originally Posted By: Towner
Or have the black face instruments also been mounted without rubber cups on the 70 models ?

I can't be absolutely definitive because I'm not well up on all the details of the '71-on 650's and 750's.

If you look at the parts books for '71 to '74 T100's, you'll see they continued to have the forks that other models stopped having at the end of the '70 season, thus the 'black face' speedo. 'n' tacho. the T100's used had the 0BA mounting studs on the bottom.

Otoh, '71-on books for triples and 650/750 twins shown speedo. 'n' tacho. without mounting studs; the speedos. are shown with different Triumph and Smiths part numbers but, unhelpfully, the obviously-different tachos. have the same part numbers.

Originally Posted By: NeoDutch59
My 1970 Bonneville was manufactured in May of 1970
Speedometer has part # SSM5007/00 1000

This is what I mean about the parts books - this number is supposedly the 'non-stud' one fitted to '71-on triples and 650/750 twins. mad

Originally Posted By: NeoDutch59
My parts book for 1970, published September 1969, shows Part #D1930, described as Speedometer head MPH (SSM5001/06)as the part number for the speedometer.

The 'grey face'.

Hth.

Regards,

Re: Question on the different speedometers [Re: Stuart] #282057
11/02/09 2:17 pm
11/02/09 2:17 pm
Joined: Mar 2008
Posts: 341
Lower Rhine Area, Germany
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Lower Rhine Area, Germany
Hi all,

thanks for this information. It is very interesting what you have to look after while buying a new tacho or speedo. Mine has number SSM 5007/00A 1000. So is "00A" the number for rubber cup mounting studs ? May be I need a new speedo soon as well, the needle starts jumping above 60mph.

Ralf


Triumph Bonneville 650 T120RV 1972
Norton Commando 850 MKII 1973
Re: Question on the different speedometers [Re: Towner] #282324
11/04/09 12:28 am
11/04/09 12:28 am
Joined: Jun 2002
Posts: 10,181
Scotland
S
Stuart Offline
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Stuart  Offline
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Joined: Jun 2002
Posts: 10,181
Scotland
Hi Ralf,

Originally Posted By: Towner
Mine has number SSM 5007/00A 1000. So is "00A" the number for rubber cup mounting studs ?

The picture posted by 'NeoDutch59' is of the pre-'71 mounting, so those clocks must have studs on the bottom of the bodies; if you look closely at the speedo., it shows just 'SSM 5007/00 1000' - no 'A'. So, if your bike's speedo. doesn't have studs on the body that protrude through the bottom of the rubber cup, possibly the 'A' is the difference?

Originally Posted By: Towner
May be I need a new speedo soon as well, the needle starts jumping above 60mph.

Possibly, but first lubricating the cable, then changing it, then changing the drive are cheaper options to try first. Then, if you really do need a new speedo., I would consider one of the pattern ones - look identical to the originals except they don't have 'Smiths' on them, but work much better, and cheaper than even a service on the original, never mind a replacement second-hand Smiths (which could well need a service too).

All the pattern ones I've looked at have the mounting studs on the bottom of the bodies (which was what I wanted anyway). If you go this way, if a speedo. isn't available without studs but your bike doesn't need them, you could cut them off easily. However, when fitting a speedo. 'n' tacho. to my T100 special, the rubber cups I bought (because the clocks are mounted in a Triples Rule bracket) had 'cut out' mouldings to make holes for the studs, then I tidied up the exposed ends with some stainless spacers and M6 domed nuts.

Hth.

Regards,

Re: Question on the different speedometers [Re: Stuart] #282363
11/04/09 11:27 am
11/04/09 11:27 am
Joined: Mar 2008
Posts: 341
Lower Rhine Area, Germany
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Lower Rhine Area, Germany
Thanks Stuart,

I already checked everything, lubricated the (new) cable and the drive. I don't need to go faster than 60 mph, so I'll wait until the problem gets worse and it can be ensured whether it is the drive or the tacho. I know a shop in Germany which offer overhauled Smiths tach's and speedos, with very good reputation. My speedo has studs too to mount them at the rubber cups.

Regards
Ralf


Triumph Bonneville 650 T120RV 1972
Norton Commando 850 MKII 1973
Re: Question on the different speedometers [Re: yellow_cad] #688120
03/14/17 6:23 pm
03/14/17 6:23 pm
Joined: Mar 2017
Posts: 3
Lawrence, KS
7
71 Bonneville Offline
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7

Joined: Mar 2017
Posts: 3
Lawrence, KS
I am so happy I found this thread! I have a '71 650 T120R which needs new gauges. I've checked the Triumph parts catalogue for Part numbers and came up with what is listed above, i.e., Speedo = SSM 5007/00 and the Tach = RSM 3003/13. I've found a speedo that is NOS, fresh out of the box for an unbelievable price. The problem (and I hope it isn't) is that the number on the face of the dial is: SSM 5007/00A 1000. will this fit my Bonnie?


1971 Bonneville T120R
1973 Norton 850 Commando
Re: Question on the different speedometers [Re: 71 Bonneville] #688216
03/15/17 1:55 pm
03/15/17 1:55 pm
Joined: Mar 2006
Posts: 3,771
Norfolk, UK
L.A.B. Online content
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Posts: 3,771
Norfolk, UK
Originally Posted by 71 Bonneville
I've found a speedo that is NOS, fresh out of the box for an unbelievable price. The problem (and I hope it isn't) is that the number on the face of the dial is: SSM 5007/00A 1000. will this fit my Bonnie?


As nobody else has replied, then I'd say it should do, although I couldn't tell you exactly what the actual difference is.

It seems Smiths often used 'A' to indicate a minor detail change or later production re-run.
'1000' (cable turns per mile) would be the correct (MPH) instrument to match the original '71 T120 BG5330/164 (1.25:1) speedo drive gearbox.

http://vintagebritishcables.com/Smi...ge&image=23._1970_-_1972_Triumph.jpg

Re: Question on the different speedometers [Re: yellow_cad] #688260
03/15/17 7:20 pm
03/15/17 7:20 pm
Joined: Mar 2017
Posts: 3
Lawrence, KS
7
71 Bonneville Offline
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Lawrence, KS
Thanks for the quick answer to my question! Speedo and tach are all I am lacking from enjoying my new rebuild!


1971 Bonneville T120R
1973 Norton 850 Commando

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