Singlespeed & Fixed Gear - cracked frame :[

just posted over on the frame builders page but theres not much activity there right now.

i just noticed what i think might be a hairline crack...

http://web.mac.com/jonfieldhouse/Site_3/%21.html

on the lug where the seat tube joins the seat stay. there is no movement but i can feel the line of the crack on the inside too.

does anyone know what repair this would need and what the deterioration timeframe might be considering its ridden on the road. i know that this is hard to answer but a rough estimate somewhere between "do not ride" to "maybe a year" would be good. its a bridgestone keirin frame no dents or dings from about '95 i think. thanks.
jon

its definitely a crack i just put the seat post back in and some grease got pushed through it. i feel sick.

Ask Noestaencasa. That's Don Walker's screenname on here. You might send him a PM, but he seems to pop in to any thread where his name comes up.

g/l. I'm sure I can speak for everyone when I say we feel for ya.

It could just be a crack in the paint. You'd have to strip the paint on that section to really know.
At that point, you could have a framebuilder repair it or you will have to repaint the stripped spot.

no its definitely cracked. you can feel a faint line inside and out. plus the grease coming through confirmed my worst fears. i don't suppose its worth the repair bill. i just splashed out on a chris king headset too. ah well you live and learn.

no its definitely cracked. you can feel a faint line inside and out. plus the grease coming through confirmed my worst fears. i don't suppose its worth the repair bill. i just splashed out on a chris king headset too. ah well you live and learn.

well is that a bridgestone?
i don't think the repair would cost you $600. take it to a frame builder and see what's up.

yes its a bridgestone. just went to the lbs to get them to look it over and it seems cracked on both sides of the lug, i got them to check the seat tube because i was thinking that id been using the wrong seat post or something but its 27.2 [so they say] and thats what it had. are there any other ways to check the seat tube is correct? so its a question of whether its worth the repair/re-spray costs. i suspect its crash damage or something - beware when buying second hand keirin frames!!!

Any other way than what? How did they check?

Any other way than what? How did they check?

they checked with a seat post sizing rod.

how long have you had the frame? it could be from someone riding with a seatpost not inserted far enough (as in too short for the rider). you need to take the frame to a framebuilder to get a repair estimate. a bike shop won't be able to fix that...unless they build frames.
bob jackson will respray our frame and fork for 75 pounds. they can repair your frame surely. send them an email.
bobjacksoncycles.co.uk

thanks ive already emailed bj i doubt its from the frame being to small its 57cm and bought in japan unless they were a leggy japanese keirin racer! if a repair and respray comes in at less than £150 do it if not i dont know. save up i guess.

they checked with a seat post sizing rod.

Yeah, that's going to be the best way to check.

thanks ive already emailed bj i doubt its from the frame being to small its 57cm and bought in japan unless they were a leggy japanese keirin racer! if a repair and respray comes in at less than £150 do it if not i dont know. save up i guess.

i think piwonka was saying if someone before you rode the frame with the seatpost barely inserted because the seatpost was too short it could stress the seatlug.