Old 6 speed shifter

macius4343
macius4343 Posts: 17
edited June 2014 in Workshop
Bought an graham weigh road bike the rear shifter broke and fell apart from the brake its a six speed so it's really hard to find a shifter for a road bike what can I do??

Would a 7 speed freewheel fit on a 6 speed?

Need help quick!
«1

Comments

  • meagain
    meagain Posts: 2,331
    From Sheldon Brown: "If your bike currently has a regular-spaced 6-speed freewheel, you can generally upgrade to 7-speed with little trouble. Since the sprockets are closer together on a 7-speed freewheel, the overall width is only very slightly wider than a regular-spaced 6-speed. You might need to add a thin washer to the right side of your axle to keep the chain from rubbing the frame in the highest gear."

    I'm assuming you mean a screw on block/freewheel, not cassette.
    d.j.
    "Cancel my subscription to the resurrection."
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Am I missing something or why don't you just fit a 7 speed shifter and adjust it so that the extra click is at the end of the cassette?
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • meagain
    meagain Posts: 2,331
    Spacing different on a 7 than a 6?
    d.j.
    "Cancel my subscription to the resurrection."
  • rolf_f
    rolf_f Posts: 16,015
    meagain wrote:
    Spacing different on a 7 than a 6?

    No such thing as spacing on friction shift :wink:
    Faster than a tent.......
  • Matthewfalle
    Matthewfalle Posts: 17,380
    Rolf F wrote:
    meagain wrote:
    Spacing different on a 7 than a 6?

    No such thing as spacing on friction shift :wink:

    Now I'm discombobulated - has he got shifters (and they have fallen apart) or down tube friction shifters?
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • meagain
    meagain Posts: 2,331
    Well, yes, but I assumed from "the rear shifter broke and fell apart from the brake its a six speed" that the OP is not seeking a friction shifter.

    Perhaps we don't know enough about what is wanted and to replace what?
    d.j.
    "Cancel my subscription to the resurrection."
  • Matthewfalle
    Matthewfalle Posts: 17,380
    meagain wrote:
    Well, yes, but I assumed from "the rear shifter broke and fell apart from the brake its a six speed" that the OP is not seeking a friction shifter.

    Perhaps we don't know enough about what is wanted and to replace what?

    I'm completely with meagain on this - that is what I interpreted as well, I just got confuddled when Rolf chipped in (in the nicest possible way).
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • drlodge
    drlodge Posts: 4,826
    I'm confused too - not heard of 6 or 7 speed STI levers.
    WyndyMilla Massive Attack | Rourke 953 | Condor Italia 531 Pro | Boardman CX Pro | DT Swiss RR440 Tubeless Wheels
    Find me on Strava
  • meagain
    meagain Posts: 2,331
    7 yes - but I think you're right about 6! More confusion...
    d.j.
    "Cancel my subscription to the resurrection."
  • Monty Dog
    Monty Dog Posts: 20,614
    I suspect it's a downtube shifter in which case, a 7 speed freewheel should fit and in friction mode you should still get all your gears. Unless of course the OP has a 7 speed shifter and is counting his clicks?
    Make mine an Italian, with Campagnolo on the side..
  • macius4343
    macius4343 Posts: 17
    Its a build in a brake shifter not a friction or a downtube shifter

    I thought it was a six because the freewheel has 6 rings but i have a feeling that it might of been swapped before sale :(

    Need help to resolve this!
  • meagain
    meagain Posts: 2,331
    OK, as per OP, it's some form of integrated brake lever and gear shifter! Any clue as to make/model? Presumably a 7 speed?
    d.j.
    "Cancel my subscription to the resurrection."
  • Matthewfalle
    Matthewfalle Posts: 17,380
    If it's a 7 speed shifter then no problem - billions of them kicking around. eBay, Merlin, etc etc.
    Postby team47b » Sun Jun 28, 2015 11:53 am

    De Sisti wrote:
    This is one of the silliest threads I've come across. :lol:

    Recognition at last Matthew, well done!, a justified honour :D
    smithy21 wrote:

    He's right you know.
  • macius4343
    macius4343 Posts: 17
    All it says on the shifter brake is campagnolo. Rear derailur is ARIS RIVAL 7000 SACHS HURET. Front derailur is RIVAL 7000
    I took some photos I'll post them ASAP.
  • macius4343
    macius4343 Posts: 17
    Here i attach some of the photos i took.
  • Monty Dog
    Monty Dog Posts: 20,614
    Mk1 Campagnolo Ergo levers. These were also sold under the Sachs brand - hence Rival mechs. From memory, but I'm not sure they ever did 7 speed Ergos - they were all 8 speed.
    Make mine an Italian, with Campagnolo on the side..
  • macius4343
    macius4343 Posts: 17
    How can I find out how many gears it's go then? I'm literally going mad now
  • Monty Dog
    Monty Dog Posts: 20,614
    Bike looks a bit of a basket case - caveat emptor. If you want 7-speed shifters, look for some Shimano RX100 STis on ebay. Alternatively, if cash is tight, fit downtube levers and regular brake levers.
    Make mine an Italian, with Campagnolo on the side..
  • macius4343
    macius4343 Posts: 17
    Well what should I do? How can I find out how many gears I have?
  • meagain
    meagain Posts: 2,331
    You'll have as many as cogs you choose (to the extent that the hub will accept that number) to put on the back wheel and have a shifter that will operate a rear mech across that number! You know the hub will take 6 (which means it will almost certainly take 7). Same holds for the rear mech. You need a shifter that will "match". As above, easiest/cheapest is a down tube lever that will work on friction - then any lever will work any number of rear cogs.
    d.j.
    "Cancel my subscription to the resurrection."
  • owenlars
    owenlars Posts: 719
    Take it to your Local Bike Shop for a quick conversation on your options.
  • drlodge
    drlodge Posts: 4,826
    Assuming the rear deraileur is the same cable pull ratio as a Shimano, if you have 7 sprockets on the back you can use a Sora 8 speed or Campagnolo 10 speed (Shimergo style ) brifter since the spacing of 7 and 8 is only 0.2mm difference.
    WyndyMilla Massive Attack | Rourke 953 | Condor Italia 531 Pro | Boardman CX Pro | DT Swiss RR440 Tubeless Wheels
    Find me on Strava
  • macius4343
    macius4343 Posts: 17
    Today in the morning went to the bike shop and they said straight away need a new shifter which I knew they said keep the same freewheel but put on 8 speed shimano shifter and an 8 speed rear deraillure and they will lock out the 2 last gears. Are they correct?
  • drlodge
    drlodge Posts: 4,826
    Shimano spacings are:
    6 speed: 5.5mm
    7 speed: 5mm
    8 speed 4.8mm

    So if you're using 8 speed shifters on a 6 speed cassette, its really not going to work. Even if you are central in the middle of the cassette, the outer gear which is 3 shifts away will be 2.1mm out of line or half a sprocket width . If you can fit a 7 speed cassette then its a different matter entirely.
    WyndyMilla Massive Attack | Rourke 953 | Condor Italia 531 Pro | Boardman CX Pro | DT Swiss RR440 Tubeless Wheels
    Find me on Strava
  • meagain
    meagain Posts: 2,331
    "8 speed rear deraillure" Eh? Very few rear mechs are indexed and great majority are therefore not x speed specific.

    That plus saying 8 work fine with 6 only goes to show best to avoid most bike shops!
    d.j.
    "Cancel my subscription to the resurrection."
  • macius4343
    macius4343 Posts: 17
    Guys I'm lost now I need someone to just tell me what I can do? All thanks will be given
  • meagain
    meagain Posts: 2,331
    If brake lever still works, just clamp on a d/t shifter and run the 6 speed block with existing rear mech.

    Cheap as chips e.g. http://www.ebay.co.uk/itm/Brand-New-Gen ... 1e8d309156

    Can't think what more we can tell you.
    d.j.
    "Cancel my subscription to the resurrection."
  • macius4343
    macius4343 Posts: 17
    Yep that's the way, but if you want to keep the brake shifter together I'll probably need new 8 speed shifter 8 speed deraillure and 8 speed wheel ??
  • drlodge
    drlodge Posts: 4,826
    macius4343 wrote:
    Yep that's the way, but if you want to keep the brake shifter together I'll probably need new 8 speed shifter 8 speed deraillure and 8 speed wheel ??

    Yes, but if you have a 126mm OLN axle then you won't fit an 8 speed wheel in there, only 7 speed. Unless of course you open the stays to accomodate a 130mm OLN axle.

    8 speed indexed shifters will work with either 7 or 8 speed, but not 6.
    WyndyMilla Massive Attack | Rourke 953 | Condor Italia 531 Pro | Boardman CX Pro | DT Swiss RR440 Tubeless Wheels
    Find me on Strava
  • macius4343
    macius4343 Posts: 17
    How can I measure if my frame would accept an 8 speed wheel ?

Categories