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  • East Coaster project

    I need to get new tyres as the ones on the rims are cracked - still got air:.

    The thought of a ribbed road tyre where I ride scares me. I love these tyres, ride to work through mud leaves,
    horse shit the lot, not even a wobble. Has anyone fitted these on their Greeves road bikes, all I have seen are the ribbed ones.


  • #2
    Roadster tyres

    Tony
    Problem is the clearance, original size was 2.75 x 19 (front), Avon only do 300 x 19 and with ribbed pattern & its tight on clearance, a studded pattern would foul forks.
    I think Mitas do a 2.75 section but only in ribbed pattern I think.
    The rear may not be so much of a problem. I use Dunlop K81 3.25 x 18

    Comment


    • #3
      Speedometer drive

      I have just stripped the rear wheel and found a rather chewed 44 tooth cog. I was not expecting this as I thought the cable came from the engine went to the speedometer dial.
      The rear hub has the hole for the speedometer gearbox which was covered with tape.

      Comment


      • #4
        As per my previous thread http://www.greeves-riders.org.uk/for...t=Speedo+drive
        Colin East (East Restorations) has a stock of the two gears but only has the short reach angle drive unit, you need a long reach one for the BH alloy hub.
        You will have to trawl the autojumbles for one of these as good ones are like hens teeth.
        You could redirect the drive to the gearbox speedo drive, but this may not be the correct ratio for the speedo so it may read slower or faster. The original drive on the EC was from the rear hub.
        Last edited by John Wakefield; 19/12/2015, 12:21 AM.

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        • #5
          Speedometer ratio

          That's what I was not sure of. Perhaps when the rear one broke the gearbox one was used? There are plenty of examples of the gearbox one in use, on your photo from flickR you can see the cable go in to the gearbox.

          https://www.flickr.com/photos/10631124@N07/21871738581

          What would be useful to know is if the ratio is the same from the gearbox and the rear hub, if so I will leave it where it was - in the gearbox.

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          • #6
            Originally posted by tony View Post
            What would be useful to know is if the ratio is the same from the gearbox and the rear hub, if so I will leave it where it was - in the gearbox.
            It needs to be 2:1. The final drive ratio will effect this depending upon what sprockets are used. To check (when engine & wheels are back in frame) make up a dummy drive from speedo drive outlet on gear box (a short piece of old speedo cable) and fix an arrow to it. Mark the tyre and wheel the bike forward one revolution & count how many revs the speedo drive makes.
            simple.
            Last edited by John Wakefield; 19/12/2015, 10:43 AM.

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            • #7
              Speedo drive ratio

              I have just checked the ratio of my EC at the gearbox speedo drive outlet & it is about 1.9 to 1 turns of the back wheel. This is with a 48T rear sprocket in place of the standard 52, so with a 52 it would be about 2 : 1
              I also measured the ratio of the hub drive & this appears to be slightly over 2:1 at about 2.1:1 (which it would be with the 14/44 gear set up & a 3:2 angle drive. My speedo (correct Smiths 1600) reads about 10% fast (the 1600 spec speedo should have 2:1 gearing).
              So looks like the gearing from the gearbox will not be too far out, certainly a cheaper fix with shorter cable that does not need to be disconnected when you remove back wheel. Go for it Tony
              Last edited by John Wakefield; 20/12/2015, 12:22 AM.

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              • #8
                I wonder why they bothered with the rear gear drive when it could be taken off the gearbox which would be cheaper - less parts?

                I shall use the gearbox as that is how it was when I got it.

                Comment


                • #9
                  Speedos & Cables

                  Talking of Speedo's & Cables I have been searching for a specification list for Smiths Motorcycle Equipment which has part numbers etc for the various speedos & cables used on Greeves. I am certain that Brian T put these up on a thread, but I cant find it on a search. Brian perhaps you would be good enough to give the link out again.

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                  • #10
                    Smiths Speedo Info For Greeves Models.

                    No John, you are imagining things.....I have never posted this info on the forum, other than the odd reference to a specific model query, i.e. that thread you posted about the 'right bitzer' (your original words) being sold on eBay at the time that was in fact a rare US spec TFS Trail model; http://greeves-riders.org.uk/forums/...ighlight=Trail Incidentally, as I still a mod at the time that thread was originally posted, it was why I edited your original title to include (actually TFS Trail) in order to make the subsequent info I posted easier for members to find.

                    What I HAVE posted previously on the forum in response to your queries on this topic in the past, is this....

                    A good few years ago now, I was looking for speedo info for my TCS and realised that this was an area of Greeves research that could benefit from some work. Basic speedo specs/model numbers are usually given in the relevant Greeves Factory Parts Book for specific models, but after a heck of a lot of time and effort I managed to find and collate comprehensive original Smiths Brochures and Spec Lists that covered Greeves models (including Invacar) from around the mid '50's to mid '60's.

                    As this info covered all marques that Smiths supplied, there was rather a lot of it.....As such, I spent a lot of time scanning and cutting and pasting just the relevant Greeves model info into one large document, which I then printed off (in full colour) and bound into a single volume plastic book folder.

                    I presented this to the committee for inclusion in the GRA archives back when I was a committee member, and the last I know of it was that Greevesnut had it, as I placed it into his hands.

                    It would require a huge amount of time and work to post it all on the forum, and considering the wealth of Greeves material I have already contributed on here, often for little in the way of response or appreciation, you can imagine my reluctance to do so, I'm sure.

                    However, as I have clearly stated before, I have provided all the Smiths info I researched and collated to the club in the hope it would be of benefit to members, so I would suggest you contact the committee if you want to gain access to it. Otherwise, check a suitable Greeves Parts list (I've scanned and posted quite a few on here already...) for basic Smiths spec/info pertinent to a particular model.

                    Brian.
                    Last edited by Brian Thompson; 20/12/2015, 01:31 PM. Reason: Link added.

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                    • #11
                      Thanks Brian. Maybe 'greevesnut' can consider publishing this info either on line or in LL as I am sure it would be very useful for members restoring bikes to obtain the correct speedo etc.
                      Have found this brief speedo spec in LL April 2002
                      Attached Files
                      Last edited by John Wakefield; 20/12/2015, 01:54 PM.

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                      • #12
                        Thought I'd covered this already....

                        Read my post again John.....it would be a huge amount of work for anyone to post that amount of info online, hence my use of the 'book' format when I presented it to the club.

                        The fact that the document exists at all is surely something, and as far as I know, members are still allowed to ask questions of club marque specialists listed in 'LL' to help with their restorations.

                        Looking at the amount of use the forum gets these days (eBay posts excepted of course....) I question how many members would actually benefit from having this info accessible 'on-line' anyway....

                        Of course, if you fancy the challenge and you have the time, there is nothing stopping you doing what I did and research the Smiths info yourself and then posting it, if that is what you want.

                        Brian.
                        Last edited by Brian Thompson; 20/12/2015, 01:46 PM. Reason: Additional text.

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                        • #13
                          Speedo cable

                          I have just bought and fitted a new speedo drive to the gear box for my Anglian and a new cable from Villiers Services with the normal prompt and helpful service.
                          I bought a new Smiths original stock speedo from A Gagg and Son. However the knurled nut on the cable will not fit the speedo. On ringing Alan Gagg this morning he explained to me that after 1965 the Smith speedos needed a longer knurled nut on the end of the cable.
                          I have spoken to V.S and they told me that this was something fairly new to them.
                          I suggest that should any colleagues on here buying either a new speedo or cable that you check the length of the speedo inlet.
                          Mike

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                          • #14
                            Speedo cables

                            This web page may be of use in identifying the correct cable.
                            Authentic Smiths Speedometer Cable, Smiths Tachometer Cable. Best Quality Custom Speedo Cable, Custom Tach Cable,Chronometric Magnetic chrono

                            Unfortunately the vendor is located in Canada they also have an eBay shop http://stores.ebay.ca/smithscables their prices are not cheap
                            Last edited by John Wakefield; 21/12/2015, 11:51 AM.

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                            • #15
                              Brian is correct about compiling a file of Smiths speedo data relating to Greeves motorcycles and presenting it to the committee for the archive, probably around 2009. The data in it covers the years 1954 to 1965.
                              As the Scottish and Hawkstone specialist over the years I have received many enquiries relating to speedo issues so I am currently the GRA's custodian of Brians file.
                              That file along with other speedo data that I have personally collected over the years enables me to answers most enquries.

                              Brians file runs to 60 sides of A4 data so making it more accessible to members is a problem. It seems unlikely to me that anyone would pay around £20.00 for a personal copy of the complete file when only a page or two relate to any one specific Greeves model.
                              I supply photo copies from the file (and/or my own data) to anyone that is after specific information on their machine and this seems to work satisfactorily.

                              Mike Norris's problem with the longer knurled nut at the speedo head end of his new cable is not shown in any of the data that I have. Probably because the data only runs to the 24TFS trials model.

                              Anyone seeking speedo information on their specific model, including Greeves road bikes, can obtain my contact details from page 1 of Leading Link.

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