racers and royals Posted April 13, 2015 Report Share Posted April 13, 2015 Tai`s crash http://speedwaytv.sportowefakty.pl/14578/o-krok-od-tragedii-w-toruniu-zobacz-upadek-woffindena for anyone who wasn`t watching the stream-really nasty the frame collapsed it seemed-luckily he got away with it. Quote Link to comment Share on other sites More sharing options...
Terry Posted April 13, 2015 Report Share Posted April 13, 2015 Looks like that bike was a 'cut and shut' Thankfully Tai was alright. Quote Link to comment Share on other sites More sharing options...
The White Knight Posted April 13, 2015 Report Share Posted April 13, 2015 Tai was extremely lucky to get away with that. It could have been very nasty indeed. Quote Link to comment Share on other sites More sharing options...
Barrycuda Posted April 14, 2015 Report Share Posted April 14, 2015 That will make a few riders a bit nervous about the bikes frame work I can see. Quote Link to comment Share on other sites More sharing options...
Shale Searcher Posted April 14, 2015 Report Share Posted April 14, 2015 Scary stuff, has the yolk gone with the forks and bars, or stayed with the diamond? A well unusual off..... Bad welding possibly?? Quote Link to comment Share on other sites More sharing options...
iris123 Posted April 14, 2015 Report Share Posted April 14, 2015 Seen a photo and it was a close call for a couple of spectators as the front wheel and forks narrowly missed them Quote Link to comment Share on other sites More sharing options...
oldace Posted April 14, 2015 Report Share Posted April 14, 2015 Scary stuff, has the yolk gone with the forks and bars, or stayed with the diamond? A well unusual off..... Bad welding possibly?? Thats what I would suspect happened, but rarely does a weld not show signs of being compromised, a small crack starting to appear then getting bigger before completely separating. It may be a freak but I suspect signs have been missed in the visual inspection of the diamond Quote Link to comment Share on other sites More sharing options...
ch958 Posted April 14, 2015 Report Share Posted April 14, 2015 given the purpose of this metal and welding i would have thought more than visual inspection required - maybe MPI (magnetic particle inspection) or similar should be used Quote Link to comment Share on other sites More sharing options...
xmas Posted April 14, 2015 Report Share Posted April 14, 2015 (edited) I would of think tai would have had brand new kit so for this to happen to a new diamond is very rare Edited April 14, 2015 by xmas Quote Link to comment Share on other sites More sharing options...
SCB Posted April 14, 2015 Report Share Posted April 14, 2015 Would it be welded at the point where it's failed? Excuse me for not using the correct technical terms but the failed seems to be where the same and engine attach at the front. That appears to be bolted together, not welded. If that nut/bolt comes apart then a structure has been broken and the weight won't be distributed correctly so will snap the top - and probably not here is has been welded but a little further down. Quote Link to comment Share on other sites More sharing options...
oldace Posted April 14, 2015 Report Share Posted April 14, 2015 Would it be welded at the point where it's failed? Excuse me for not using the correct technical terms but the failed seems to be where the same and engine attach at the front. That appears to be bolted together, not welded. If that nut/bolt comes apart then a structure has been broken and the weight won't be distributed correctly so will snap the top - and probably not here is has been welded but a little further down. If you imagine the part of the frame that the fork goes through with the other two tubes welded to it, just like on a bicycle, well that weld seems to have failed and the forks have detached, with that part of the diamond still with them Quote Link to comment Share on other sites More sharing options...
DutchGrasstrack Posted April 14, 2015 Report Share Posted April 14, 2015 Check out this photo: http://www.sportowefakty.pl/zuzel/zdjecia/galeria/7367/upadek-taia-woffindena/9-330119#photo-startThe diamond is snapped on a very wierd place imo. Quote Link to comment Share on other sites More sharing options...
SCB Posted April 14, 2015 Report Share Posted April 14, 2015 If you imagine the part of the frame that the fork goes through with the other two tubes welded to it, just like on a bicycle, well that weld seems to have failed and the forks have detached, with that part of the diamond still with them But it's not snapped there. It failed at the bottom. When that failed all the structural integrity of a frame has gone. That caused the whole thing to collapse. If you take one of the cables off a suspension bridge the actual roadway will collapse but the roadway is perfectly adequate if the cables work. This is the same, the weld itself is perfectly adequate as long as the bolt holding the frame at the bottom is fine. Quote Link to comment Share on other sites More sharing options...
Long Eye Posted April 14, 2015 Report Share Posted April 14, 2015 But it's not snapped there. It failed at the bottom. When that failed all the structural integrity of a frame has gone. That caused the whole thing to collapse. If you take one of the cables off a suspension bridge the actual roadway will collapse but the roadway is perfectly adequate if the cables work. This is the same, the weld itself is perfectly adequate as long as the bolt holding the frame at the bottom is fine. If you look at the picture it is the weld that has failed on the bottom right-side downtube. The engine bolt is still in place complete with the lug that it goes through. A crack on this part is not unusual. The clean break through the top tube behind the headstock gusset is though. Quote Link to comment Share on other sites More sharing options...
SCB Posted April 14, 2015 Report Share Posted April 14, 2015 If you look at the picture it is the weld that has failed on the bottom right-side downtube. The engine bolt is still in place complete with the lug that it goes through. A crack on this part is not unusual. The clean break through the top tube behind the headstock gusset is though. But if you look at this photo the downtube has gone. http://www.sportowefakty.pl/zuzel/zdjecia/galeria/7367/upadek-taia-woffindena/6-330042#photo-start Quote Link to comment Share on other sites More sharing options...
Duane Posted April 14, 2015 Report Share Posted April 14, 2015 Both the down tubes are still attached to the front of the bike. It's not good though. Quote Link to comment Share on other sites More sharing options...
Long Eye Posted April 14, 2015 Report Share Posted April 14, 2015 But if you look at this photo the downtube has gone. http://www.sportowefakty.pl/zuzel/zdjecia/galeria/7367/upadek-taia-woffindena/6-330042#photo-start In picture 3 it looks as though the left side lug is still attached to the engine plates the same as the right side. Whatever happened I bet it grabbed his attention! Quote Link to comment Share on other sites More sharing options...
SCB Posted April 14, 2015 Report Share Posted April 14, 2015 In picture 3 it looks as though the left side lug is still attached to the engine plates the same as the right side. Whatever happened I bet it grabbed his attention! So it does. I may be wrong then! Quote Link to comment Share on other sites More sharing options...
pete cc Posted April 14, 2015 Report Share Posted April 14, 2015 Tai was lucky to walk away & somebody will be at fault. Quote Link to comment Share on other sites More sharing options...
weatherwatcher Posted April 15, 2015 Report Share Posted April 15, 2015 There comes a point where they can only go so far with trying to lighten the speedway bikes. As a plater welder by trade, it looks like the fault lies with the frame work tubing being so thin, that there is no integrety left in the strength. It looks like the frame was so thin that when he hit the rut, the frame just snapped in half. If that is the case, than how many other riders are using frames, from the same manifacturer. Was it a one off frame or one off the shelf, what ever the case may be, there will be some very sorry people with egg on thier faces. Time to think more on the saftey of the riders, than trying to cut coners by making parts for the bike that are not up to the job. I am sure we will find out soon, what was the cause of the frame failing. He was very lucky. 1 Quote Link to comment Share on other sites More sharing options...
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