Gaz96 Posted December 13, 2012 Report Share Posted December 13, 2012 So been working a year with 2 jobs while At school to save up to build my dream machine. But after riding it 3 times I found a crack, fair to say I was absolutely gutted. Second hand frame not much I can do but was hoping there would be a solution, it's on the seat tube, so was hoping if I took it right off and kept everything neat then it would then spread any further. Tried to show it as past as possible from my phone and dark conservatory. So was wondering if anyone had any suggestions on this? I cannot afford a new frame, was thinking if I took the crack right round and file it all clean would there be a way of clamping the seat post in and making it still rideable? Wouldn't mind even if the most was in a fixed position, just really want to be able toride it as I was planning on racing all the SDA's next year. Any suggestions appreciated. Quote Link to comment Share on other sites More sharing options...
dezmtber Posted December 13, 2012 Report Share Posted December 13, 2012 (edited) drill small holes at each end of the crack and have someone weld the crack, then run a seat post which goes a long way into the frame. this crack is common if someone uses a frame that is too small for them. i think a repair should be ok jaf bikes do frame repairs and will advise you better Edited December 13, 2012 by dezmtber Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 13, 2012 Author Report Share Posted December 13, 2012 By to small for them you mean running the post real high? Cause the 3 times I was out I had to post right up while cycling up Ben Ledi, my local mountain. Will give Jaf a message Quote Link to comment Share on other sites More sharing options...
monkeyseemonkeydo Posted December 14, 2012 Report Share Posted December 14, 2012 Depends how long the post is. You'd want the seat post to be in the frame below the bottom of the top tube weld plus a bit. Could well be your problem... Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 14, 2012 Author Report Share Posted December 14, 2012 Guessing that is/was my problem then. Any other suggestions on what to do? Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted December 14, 2012 Report Share Posted December 14, 2012 Cut it of where it is cracked and just hope you can still fit a clamp on. Don't bother drilling holes either side as that gives the crack and opportunity to spread in another direction as the area is already stressed and a hole is only temporary. If you don't mind spending the money you could contact Josh at Jaf bikes to get it carbon wrapped. Quote Link to comment Share on other sites More sharing options...
dezmtber Posted December 14, 2012 Report Share Posted December 14, 2012 There won't be space for a seatclamp looking at the pics.There won't be space for a seatclamp looking at the pics. Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 14, 2012 Author Report Share Posted December 14, 2012 Defo no space for a seat clamp, would there be any other way of keeping the post in? Even if it had to permanent. Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted December 14, 2012 Report Share Posted December 14, 2012 Drill a hole through the seat tube and post in the desires position and use a nut and bolt to secure it in place.Like this - http://mutantbikes.mfobmx.com/left-nav/24-framesm/evolution-v3 Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 14, 2012 Author Report Share Posted December 14, 2012 Thanks, that may be just what I was looking for! I dont think I want to have welding done Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted December 14, 2012 Report Share Posted December 14, 2012 Jaf bikes would be the best option as he is technically eliminating the HAZ caused by the heat from welding. By using carbon fiber around the weld he is effectively diverting the stress that would usually go through the weld into the carbon which has a natural spring and flex. This is in theory eliminating the problem of rewelds as the softer alloy wont have any stress going through it so it wont crack again. Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 14, 2012 Author Report Share Posted December 14, 2012 Would really like to but to be honest I am completely skint and think ill be trying to stick with the cheaper self repair unless anyone was was to completely advise me against it. It should work? Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted December 14, 2012 Report Share Posted December 14, 2012 It will defiantly work but you may be kicking your self later in! Jaf repairs are very reasonable and saving for! Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 14, 2012 Author Report Share Posted December 14, 2012 Why sorta of price you looking at for the carbon wrap? Quote Link to comment Share on other sites More sharing options...
Rob Leech Posted December 14, 2012 Report Share Posted December 14, 2012 Hi Gaz, just sent you over an e-mail with an idea so you can sort it out, have a gander and let me know what you think . For a repair like this, you'd be looking at £30 plus return postage . Just pop me an e-mail if you'd like it doing chap. Cheers, Josh Leech, Jaf Bikes. Quote Link to comment Share on other sites More sharing options...
Gaz96 Posted December 15, 2012 Author Report Share Posted December 15, 2012 Got your email Josh, thanks a lot for your time, that's was very helpful. Will be sure to give that a try before it has come right off. Cheers Quote Link to comment Share on other sites More sharing options...
Rob Leech Posted December 15, 2012 Report Share Posted December 15, 2012 No problem chap, let us know how it goes . Cheers, Josh. Quote Link to comment Share on other sites More sharing options...
Tomm Posted December 16, 2012 Report Share Posted December 16, 2012 I had exactly this crack on a Commencal Meta frame. What I did: Drill out the ends of the crack Cut my current seatpost down flush with the top of the frame, cut a slot in the back of it to allow the tube to be pinched with the QR Put a bolt through the bottom of the seat tube, through the seat post and out the other side to hold it in place. I used another seatpost whose outer diameter matches the inner diameter of the cut-down original seat post You could put some extra weld over the crack if you like, I didn't bother Frame is still intact having been ridden for 18 months after this fix. I don't know if you need to bother with changing your seat height on a DH bike though. If you're not bothered, I'd just fix the post in place with two big bolts through the seatpost / seat tube (between top tube and BB). Quote Link to comment Share on other sites More sharing options...
Ash-Kennard Posted December 17, 2012 Report Share Posted December 17, 2012 just use a jubilee clip around the frame and buy a longer seat tube. sorted. then you can show off your crack to all the girls still if you wanted 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.