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  1. Uncle Grumpy

    F4 BLT stuck/rounded bolt removal

    Where bolts heads site proud, I have successfully (and on several occasions) used a Dremel to cut a slot across the head of the bolt and used a flat blade screwdriver. Steady hand, one neat cut. Try tapping in a Torx or next size up imperial key bit first though. Cutting screwdriver slot...
  2. Uncle Grumpy

    BoTM Bike of The \Month November 2024 "European Special" now taking entries

    Lot of Italian brands famous for their road bikes were dabbling with MTB. Cinelli and Colnago spring to mind, and of course Bianchi. Morati, Alan, Vitus, Sintesi... Plenty of European brands - looking forward to seeing some examples via this months poll.
  3. Uncle Grumpy

    Pinion Manitou FS II

    I agree. Sure, it's a modern bike and a modern build - but the concept (at least, the rear suspension) is straight outta early 90s Manitou. It is a tribute to an iconic FS design from pre-97. Having relevance to today (being a modern bike) doesn't diminish it having relevance to the...
  4. Uncle Grumpy

    Chainrings spacing

    For Shimano cranks with a clamp on front derailleur, the spacers are: 68mm BB shell - 1 x 2.5mm spacer on the non drive side, 2 x 2.5mm spacers on the drive side 73mm BB shell - No spacer on the non-drive side, 1 x 2.5mm spacer on the drive side. Shimano Mountain BBs are a little longer in...
  5. Uncle Grumpy

    Chainrings spacing

    BCP or BCD is bolt centre pitch, or bolt centre diameter. It dictates the diameter of the circle drawn through the chainring bolts. There are 2 primary chainring BCDs. Here, enjoy the minefield of standards... https://www.sheldonbrown.com/cribsheet-bcd.html Evenly spaced is good. Tick...
  6. Uncle Grumpy

    Give 3 Examples. Why Retrobikes are awesome

    1. Mountain Cycle San Andreas - It broke a lot of ground with eyecatching looks, versatility, eyecatching looks, making long travel work, eyecatching looks, disc brakes, eyecatching looks and upside down forks. Oh, their eyecatching looks. Shout out to the Foes LTS which was similar in...
  7. Uncle Grumpy

    Try to find what's the frame

    I agree about the headset cups, which is funny because they have capped the brake bosses and derailleur mounting prior to painting which shows some attention to detail - then they left the headset cups pressed all the way in and painted it with more runs than Viv Richards. Not sure on the brand...
  8. Uncle Grumpy

    Guess that tool

    Okay. I'm keen to know how it works.
  9. Uncle Grumpy

    Guess that tool

    Combined derailleur hanger alignment and single speed conversion tool. 1. Screw threaded bit into hanger. 2. Smack the square bit around again until derailleur hanger is straight ...or shears off. 3. Say "I meant to do that." 4. Convert to single speed using eccentric hub. 5. Hang tool up...
  10. Uncle Grumpy

    Do you notice extreme negative views of none retrobikers when you say you are trying to work with an older bike?

    [reflects on this for a while] No, it's not me. The rest of the world is wrong.
  11. Uncle Grumpy

    Do you notice extreme negative views of none retrobikers when you say you are trying to work with an older bike?

    That's true. BITD I rode bush tracks on a rigid 3x7 hardtail with cantilever brakes and 26x1.9 tyres. These days it's 160mm travel duallies with 29x2.5" treads on groomed bike park trails. Maybe it's me, I can't jump now and I couldn't jump then - ha! 😅 But... the good old "trail through...
  12. Uncle Grumpy

    Do you notice extreme negative views of none retrobikers when you say you are trying to work with an older bike?

    You just described mountain biking in the last 20 years. This years model has a half degree slacker head angle, it's better. We upsize the rotors, it's better. This axle is 10mm wider, it's better. This axle bolts on, it's better. This frame supports a dropper post that can drop the saddle...
  13. Uncle Grumpy

    07 Hope Mini advice needed

    These are rebuildable and it's not difficult. From memory the Hope website has exploded diagrams. Hardest part might be getting hold of the right kit. Therefore, I'd go with Option 2 (but minus the bad pun :) ).
  14. Uncle Grumpy

    Rust pinhole on chain stay bridge, just how goosed am I?

    I wouldn't be worried about. No different to a breather hole to let the flux gas out while brazing. Treat it with a bit of rust converter to stop any growth of the rust, them hit some paint over it. Actually, what *I* would do if I was worried (which I wouldn't be) is clean the paint off...
  15. Uncle Grumpy

    Inappropriate brand/model names

    Yes, each provides a different note.
  16. Uncle Grumpy

    Shogun 'Dad Bike' - gRaVeL cOnVeRsIoN

    In every neighbourhood, there is some eccentric old dude with a garden shed full of bike seats attached to seatposts, waiting to flood eBay and corner the market.
  17. Uncle Grumpy

    Repurposing Vintage Bicycle Parts

    Exactly. I hang mine on the floor-drobe.
  18. Uncle Grumpy

    Shogun 'Dad Bike' - gRaVeL cOnVeRsIoN

    Somehow I missed this first time around. I did the same thing a few years ago. My Shogun Metro thing came about some years ago when I found a Metro frame and fork on a hard rubbish pile. A friend and I built it up to give to one of my friend's friends who was working too hard and needed some...
  19. Uncle Grumpy

    Crown race missing (or is it?)

    I'm always reluctant to suggest anything as an absolute - because bike manufacturers always liked to throw in "innovations" or proprietary standards here and there, possibly to confuse future retro-bikers in decades to come... but... That doesn't look like a crown race. What headset was in it...
  20. Uncle Grumpy

    Any obscure BB removal suggestions before I go the sledge hammer route??

    Beat me to it! My father restores vintage farm equipment which are the pin-up girls of Rusted Crap Quarterly and he swears by the ATF/acetone mix. I've used it to soak seized suspension bolts on car restos with success too. I have welded a piece of steel bar across a steel BB cup - that...
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