ffm

Most recent activity

• SOLD Diamond Back Ascent with extras

  in Complete bikes and frame & forks • 4 days, 14 hours

  

  I have one of these as my dadbike, built up a bit like that. It's my favourite bike paint job ever.

• Tiny £10 clearout

  in Components, clothing and miscellany • 4 days, 19 hours

  

  27.2 x 350mm seatpost

  @konadefer ?

• A deluge of parts

  in Components, clothing and miscellany • 4 days, 19 hours

  

  Also, pictures of the Simplex post:

  That's been pretty drastically cut down. There's no way that minimum insert line is still safe.

• Any question answered...

  in Miscellaneous and Meaningless • 5 days, 6 hours

  

  T cut is a slightly abrasive car polish/rubbing compound that can restore very light scratches in paint.

• Any question answered...

  in Miscellaneous and Meaningless • 5 days, 8 hours

  

  I've used it a few times with no ill-effects. I've also found that turtle wax works well for keeping things hydrophobic. You could always test the inside of a chainstay if you're concerned.

• EU referendum, brexit and the aftermath

  in Miscellaneous and Meaningless • 1 week, 1 day

  

  Anyone posted this yet?

• Rick Powell seat tube crack

  in Frame Builders • 1 week, 1 day

  

  Could you epoxy in a long seatpost shim as a sleeve? The lip on its top would hold the broken seat tube down. If you wanted to get technical you could put a length of threaded rod down to the BB shell and use that to hold the whole thing in compression while it cures. It wouldn't be as solid as a long seat post down past that joint, but it would retain its ability to clamp the seat post properly, albeit with a smaller seat post size.

• Rick Powell seat tube crack

  in Frame Builders • 1 week, 1 day

  

  Although I'd err on the side of caution, is that definitely knackered given that the crack is above all the welds? Other than the issue of keeping the seatpost at the correct height, what would happen if you just used a super-long seatpost that went into the frame well below the junction of the top tube, seat tube and seat stays? Incidentally, how long is that seat post?

• Speed Wobble when Touring on old Dawes Super Galaxy

  in Mechanics & Fixin' • 1 week, 3 days

  

  The physics of bicycles and motorcycles are essentially the same but with more speed and power in the latter, the effects are going to be magnified

  I'm not sure about "magnified", I think having the power available to spin your back wheel and make it drift sideways is something that just doesn't happen on a bike other than in really specific conditions
  
  . I don't think that's the cause of all, or even most tank-slappers on motorbikes, but it's worth considering that the physics of those is potentially qualitatively different from similar-looking problems that you might get on a bike.

• Speed Wobble when Touring on old Dawes Super Galaxy

  in Mechanics & Fixin' • 1 week, 3 days

  

  That video's really interesting, the slow motion makes it look like the progressive worsening of the front wheel oscillation is partly due to the rear wheel losing traction and the rider having to counter-steer to negate that. On a bike that's obviously not going to happen, since you wont get the rear wheel to break sideways so easily, so the physics might be different. I have seen speed wobbles on bikes, in fact I managed to snatch mini_m off their bike before one took them into a pillar.