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the 'there's no such thing as a stupid question' bike maintenance thread

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Comments

  • Moderators, Category Moderators, Arts Moderators, Sports Moderators, Paid Member Posts: 54,398 CMod ✭✭✭✭magicbastarder


    what sort of issues have you had? i've had mine about 4 or 5 years now with little complaint.



  • Registered Users, Registered Users 2 Posts: 7,450 ✭✭✭CantGetNoSleep


    I'm having issues indexing a 1x Shimano GRX setup.

    Ive never been gifted at indexing gears but because this was 1x, thought I could do it myself.

    I can get it almost ok on the stand, but then out on the road I always get jumps on the higher gears. I can solve this by playing with the barrel adjuster a bit, but that just causes jumps when I shift to the lower side of the cassette or won't let me shift into the biggest ring at all even.

    Not sure what I am doing wrong. Limit screws seem fine and I can get it into every cog on the cassette on the stand but on the road there is clearly something up with it. Doesn't seem like a B screw issue either. I've tried playing around with the barrel adjuster but just doesn't seem to want to work for me.

    Any ideas?



  • Registered Users, Registered Users 2 Posts: 1,169 ✭✭✭Mundo7976


    Rubbing, finally got sorted with new discs & pads. Bled them, new wire, adjusted to nth degree. Still not powerful enough for a quick stop, but now one of them has leaked from the small bleed screw and i feel they might be unsafe.

    When they did work they were good, just think it may be time to replace.



  • Moderators, Category Moderators, Arts Moderators, Sports Moderators, Paid Member Posts: 54,398 CMod ✭✭✭✭magicbastarder


    maybe the pistons were sticking slightly?



  • Registered Users, Registered Users 2 Posts: 1,169 ✭✭✭Mundo7976


    Thought of that and massaged gt85 around the edges of the plates.

    I wont give up yet, just looking for a back up alternative



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  • Moderators, Category Moderators, Arts Moderators, Sports Moderators, Paid Member Posts: 54,398 CMod ✭✭✭✭magicbastarder


    not sure what options are out there for you in terms of replacement which won't involve replacing the shifters.

    i asked - just out of curiosity - in my LBS about six months ago what the difference in price between replacing the calipers and shifters, vs. a whole groupset replacement was, and he just chuckled and said something like 'good luck with getting the parts for either option'.



  • Registered Users, Registered Users 2 Posts: 1,169 ✭✭✭Mundo7976


    😂

    I may persist so



  • Registered Users, Registered Users 2, Paid Member Posts: 5,264 ✭✭✭nilhg


    How new is the cable? If it's a bit sticky it could cause the symptoms you describe. Otherwise could the derailleur hanger e a little bent? No recent falls?



  • Registered Users, Registered Users 2 Posts: 7,450 ✭✭✭CantGetNoSleep


    It was indeed the alignment of the derailleur hanger - I noticed when I had given up after hours of playing around with cable tension and limit screws.

    I use two wheelsets on the bike so was swapping over the wheels to take it to the bike shop for them to sort it. When putting the new wheel in, the thru axle would not tighten - on Genesis thru-axle frames, the point where the thru axle attaches is connected to the hanger and there is a small plate attaching it to the frame. This had all moved out of position, obviously impacting shifting. Not an ideal set up tbh as I've never had a hanger that can move just by swapping a wheelset.



  • Registered Users, Registered Users 2 Posts: 685 ✭✭✭Toblerone1978



    Cheers Nicksnikita. Can I ask you to respond with a link for a cassette tool, just want to make sure it's the correct item I'm looking at!



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  • Registered Users, Registered Users 2 Posts: 1,117 ✭✭✭nicksnikita


    this one would do the job. Cheaper ones may be available. That’s just the first one I came across on crc.

    Choose Shimano if you run a Shimano or SRAM cassette. Choose Campag if you run a Campag one



  • Registered Users, Registered Users 2 Posts: 3,145 ✭✭✭Benny Cake


    Anyone here have sram red? Weird question but should my rear derailer shift when the bike is stationary? It shifts perfectly on the move but when it's not it doesn't shift up or down. It's like it's in a sort of "sleep" mode.


    Update: sorted

    Post edited by Benny Cake on


  • Registered Users, Registered Users 2 Posts: 8,608 ✭✭✭cletus


    Personally I've never had much success with easy outs.


    Two DIY options as I see them.


    Try filing two flats on opposite sides of the head, and see can you get purchase on them.


    Option two is more difficult, but you could drill out the screw. You'd have to be careful not to slip and damage the frame, and you'd want to make sure your using the



  • Registered Users, Registered Users 2 Posts: 8,608 ✭✭✭cletus




  • Registered Users, Registered Users 2 Posts: 1,169 ✭✭✭Mundo7976


    Is there any space for the tip of a vise grip to get a hold of the outer edge. As tight as you can, it may get some movement



  • Moderators, Recreation & Hobbies Moderators Posts: 23,065 Mod ✭✭✭✭Brian?


    Jesus, you're in real trouble here. I wonder if the bolts were cross threaded and forced in. Can you post pictures of the current situation?

    they/them/theirs


    The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all of the people.

    Noam Chomsky



  • Moderators, Recreation & Hobbies Moderators Posts: 23,065 Mod ✭✭✭✭Brian?


    Disregard my last post, I see these now.


    The easy outs showing drill into the screw and loosen it. From your picture I can't see any evidence that an easy out was used, are they biting into the screw at all? Get a HSS drill bit that's smaller than the easy out (and the shaft of the screw), drill into the centre of the screw to a depth of a 3-4mm. Then used the easy out to take the screw out.


    These button head screws are the absolute worst.

    they/them/theirs


    The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all of the people.

    Noam Chomsky



  • Moderators, Recreation & Hobbies Moderators Posts: 23,065 Mod ✭✭✭✭Brian?


    @Weepsie Check out from about 5:30 on in this video, on how to use easy out.

    they/them/theirs


    The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all of the people.

    Noam Chomsky



  • Registered Users, Registered Users 2, Paid Member Posts: 1,612 ✭✭✭hesker


    Why is the hacksaw useless ?

    Did you try using a new blade?

    Or is it one of those mini hacksaws. With a proper hacksaw and new blade I reckon that would be out in about 5 minutes



  • Registered Users, Registered Users 2, Paid Member Posts: 1,612 ✭✭✭hesker


    You would need to stand the bike so that the seat tube is horizontal and the bike is secured. Then you can use your free hand to support the blade.



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  • Registered Users, Registered Users 2 Posts: 8,608 ✭✭✭cletus


    Lots of different option offered here, so this is not to suggest a new way, but looking at the button head, I can't see any reason why you wouldn't be able to drill, file, or cut with a hacksaw.


    As Brian said, setup is important here. No point trying to do any of this with the bike just propped up against a wall. You need to secure the frame, get the screw heads horizontal, and at a workable height.



  • Registered Users, Registered Users 2 Posts: 706 ✭✭✭ARX




  • Moderators, Recreation & Hobbies Moderators Posts: 23,065 Mod ✭✭✭✭Brian?


    Button head screws + Hacksaw = disaster


    The easy outs will work. Commitment is needed.

    they/them/theirs


    The more you can increase fear of drugs and crime, welfare mothers, immigrants and aliens, the more you control all of the people.

    Noam Chomsky



  • Moderators, Category Moderators, Arts Moderators, Sports Moderators, Paid Member Posts: 54,398 CMod ✭✭✭✭magicbastarder


    sher i've an angle grinder with a metal cutting disc i can lend you...



  • Registered Users, Registered Users 2 Posts: 8,608 ✭✭✭cletus


    I don't know about you doing something wrong, but starting a job like that without the tools you need is a recipe for disaster.


    Bleed kits should be easy to get in your lbs, and I'd imagine there are spurious versions of the brake assembly grease.


    I note at the start of the video he said SRAM are warrantying those parts out, have you looked at that option?



  • Registered Users, Registered Users 2 Posts: 4,702 ✭✭✭tigger123


    Hi, does anyone have any experience with something like the below? Its a frame mounted seat for kids.

    https://kidsrideshotgun.eu/

    I have two kids, and am looking at commuting with them on the bike. The 1 year old will be in a toddler seat on a back carrier seat, but I was thinking of putting the older kid (a small girl, just turned 4) on one of the above (...or something similar; 200 quid seems a bit steep for what it is).

    Any thoughts/advice would be much appreciated :)



  • Registered Users, Registered Users 2 Posts: 8,608 ✭✭✭cletus




  • Moderators, Category Moderators, Arts Moderators, Sports Moderators, Paid Member Posts: 54,398 CMod ✭✭✭✭magicbastarder


    bringing a kid out on your bike mountain biking is not a concept i've come acress before (not that's what tigger123 is planning!)



  • Registered Users, Registered Users 2 Posts: 2,404 ✭✭✭Large bottle small glass


    I have this for a tallish 4yr old

    I got it for 45ish in local Argos.


    The one you linked isn't cheap and I'm not quite sure what you get for all that extra cost. Is the one you linked only for mtb's?


    In short they are great, your child will love it and so will you. I use it daily for shop/creche/greenways etc. Should get next summer out of it. BTW all those nice ladies are smiling at the child not you😀



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  • Registered Users, Registered Users 2 Posts: 4,702 ✭✭✭tigger123


    Not sure if its only for MTBs, but tbh the one you have linked looks great. Really cant fathom how that other one is 200 quid!

    I think I'll give the Oxford one a try, so thanks for the recommendation. I was a little worried about having the 1 year old on the back and the 4 year old on the front at the same time, but I think the weight distribution should be ok (as the four year old will be next to me, and not on the back seat).

    Its for doing creche runs. I would go with the bike trailer seat for the two of them, but parts of the commute have no cycle lane, and I'd be nervous I can't see them.



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