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  1. #26
    Single-serving poster electrik's Avatar
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    Quote Originally Posted by mtalinm View Post
    in other words, will it be too cold to shift only in cases where I've left the bike outside overnight or all day (extended period of time), or could it also be too cold to shift even if I just go out for an hour's ride after having stored the bike inside?
    I've never had shifter's body freeze, but if you're worried i'd spray a light oil like wd-40 in there. The wd-40 will thin the grease so the shifter spring and pawl can work better in the cold and it will also displace any water. Better yet, carry a one of the tiny cans in your bag, that plus a lighter and some lock-deicer.

  2. #27
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    How do internal hubs work in the cold?
    Current stable: Sun Atlas X-type (mine), Trek Navigator 3 (wife), two Sun Revolution cruisers (wife, daughter)

  3. #28
    Senior Member digibud's Avatar
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    Quote Originally Posted by JusticeZero View Post
    How do internal hubs work in the cold?

    that's a question worthy of it's own thread...

  4. #29
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    Quote Originally Posted by digibud View Post
    that's a question worthy of it's own thread...
    Though it might be worth noting that yes, they do indeed work well in the cold. :-)

  5. #30
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    Nubcake,

    I have this exact issue on my Road Bike ('98 Raleigh R700 purchased new March 1998). This is Ultegra 9 speed and only the rear shifter does not work when upshifting to the larger rear sprocket (easier gear). This issue only occurs during cold weather (30~40F). Once the temperatures get above 50F the shifting improves and at 60F there is no issue at all.

    I've thought this might be cabling as I use teflon lube on all my bike - it can be sort of thick when cold.

    Are you aware of the ability to access this "pawl" on my '98 Ultegra shifters? These were the first generation 9 speed with the rattling caps. Several years ago I wrote to Shimano and they sent me replacement caps that ended the rattle.

    Thank You,

    Jimmy

  6. #31
    Bicycle Repair Man !!! Sixty Fiver's Avatar
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    Quote Originally Posted by MalibuJim View Post
    Nubcake,

    I have this exact issue on my Road Bike ('98 Raleigh R700 purchased new March 1998). This is Ultegra 9 speed and only the rear shifter does not work when upshifting to the larger rear sprocket (easier gear). This issue only occurs during cold weather (30~40F). Once the temperatures get above 50F the shifting improves and at 60F there is no issue at all.

    I've thought this might be cabling as I use teflon lube on all my bike - it can be sort of thick when cold.

    Are you aware of the ability to access this "pawl" on my '98 Ultegra shifters? These were the first generation 9 speed with the rattling caps. Several years ago I wrote to Shimano and they sent me replacement caps that ended the rattle.

    Thank You,

    Jimmy
    My XTR shifters do not like it when it is cold (-15C)... and they have been lubed with synthetic and still get sluggish.

    My primary winter bike has an internal gear hub and cannot say enough nice things about what it is like to have a drive that works flawlessly under any conditions and in the most extreme temperatures.

  7. #32
    Senior Member digibud's Avatar
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    If you are unsure of how take the Ultegra apart, I'm confident Shimano will have a diagram somewhere for you. failing that you might be able to simply use a spray can of degreaser and spray inside well enough to get the grease out, then let dry and spray a bit of teflon inside. On some shifters that's all it takes. +30 is a crazy temp for this trouble.

  8. #33
    AEO
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    Quote Originally Posted by digibud View Post
    If you are unsure of how take the Ultegra apart, I'm confident Shimano will have a diagram somewhere for you. failing that you might be able to simply use a spray can of degreaser and spray inside well enough to get the grease out, then let dry and spray a bit of teflon inside. On some shifters that's all it takes. +30 is a crazy temp for this trouble.
    nope, no diagram of the internals of the shifter. They only have a diagram on how to disassemble the lever from the body.

    Generally, it's best to just use the spray method
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

  9. #34
    Senior Member digibud's Avatar
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    Is http://techdocs.shimano.com/techdocs...&bmUID=iS193Zw of any use? There are some shifter docs there.

  10. #35
    AEO
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    Quote Originally Posted by digibud View Post
    Is http://techdocs.shimano.com/techdocs...&bmUID=iS193Zw of any use? There are some shifter docs there.
    like I said, shimano do not actually give you any instructions on how to disassemble the shifter internals. That's also why they don't sell any shifter parts, other than the complete lever.
    Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
    http://sanfrancisco.ibtimes.com/arti...ger-photos.htm

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