Awesome 531 is too flexy for me

One of the occuring problems that you conversion peps will run into

Onone, just read your comments on the PK ripper thread about hipster conversions, so i guess this is what you are alluding to.

If you have nothing helpful to add can you kindly fuck off.

having thought a bit more about this, I don't think BB problems have been ruled out (?) because a knackered BB doesn't always show unless it's under load. Quite often you can spin a BB, rock it up and down and all that and it will appear fine, only when you climb a hill or put in a hard standing start will it grumble. If it's a year old cheap sealed BB, then change it. if it's an even older loose ball and axle job then change it.

as always, this is a process of elimination, usually if I ride the bike in question I can isolate the problem better than shooting in the dark on an internet forum.

The BB is a 3 month old campag veloce, installed by Mercian when they renovated the frame.
Someone at Brixton Cycles did take it for a test ride after it was checked over, don't know if this was the mechanic or not. Its pretty flat around that area though so not sure if they would have encountered the problem as I seem to.

RPM, if thats an offer I would be very grateful! Where are you in London?

I've just had a quick go at respacing the rear hub but it seems I need 17mm cone spanners and mine only go up to 16mm. Had a go with adjustable spanners but no luck so far!

In my experience big 531 frames bend lots under heavy loads, I sheared the seat tube off at the bb on my beloved Holdsworth whilst doing hill sprint reps.... but then I am 6'4" and 15 & 1/2 st..
FWIW I run a track frame which is much heavier than my old road frame, unknown tubing, although the forks are stamped 531 on the steerer. I run a 50 x 18 and even on long climbs it's super stealthy.
My Roberts (very highly recommended) has a hoooge downtube and flared seattube which helps nicely, even with 10 speed Campag there's no rubbing under power. If you're going custom these guys are great to deal with.

In my experience big 531 frames bend lots under heavy loads, I sheared the seat tube off at the bb on my beloved Holdsworth whilst doing hill sprint reps.... but then I am 6'4" and 15 & 1/2 st..
FWIW I run a track frame which is much heavier than my old road frame, unknown tubing, although the forks are stamped 531 on the steerer. I run a 50 x 18 and even on long climbs it's super stealthy.
My Roberts (very highly recommended) has a hoooge downtube and flared seattube which helps nicely, even with 10 speed Campag there's no rubbing under power. If you're going custom these guys are great to deal with.

Roberts look fooking nice...........I don't think ive got quite that much cash for a new frame though!

I've just respaced and repacked my Campag hubs with new bearings.......going to be riding over to my girlfriends tonight so we'll see if that has made any difference!