heathy Posted April 25, 2005 Report Share Posted April 25, 2005 I cut my silencer open along the original welds and drilled out the rivets in the middle but it still seems to be stuck together in the middle Does anyone have any pictures of how they have done theirs? Is it worth repacking them or am I better off just buying a new one (wish I hadn't started it now ) Its stupid that they can't be disassembled because its obviousley going to need repacking a few times in the bikes life, supose its another way for sherco to make some extra cash Quote Link to comment Share on other sites More sharing options...
alan bechard Posted April 25, 2005 Report Share Posted April 25, 2005 I have not seen any rivets on any Sherco exhaust. Did you by chance drill out the screws holding the plastic heat shield on? There is a row of spot welds along the center divider portion that must be drilled out, sounds too me like that is where your problem is. I posted some pictures here a bit ago of a disassembled one, I would have to look back a bit to find the pics. When drilling out the spot welds it takes a fair size bit too remove all the material that is attatched. I used about a 3/8 blair hole cutter or rotabroach to do it, if I remember right there are 3 spot welds to get. Good luck. Quote Link to comment Share on other sites More sharing options...
chris Posted April 25, 2005 Report Share Posted April 25, 2005 Heathy Have a look at this Quote Link to comment Share on other sites More sharing options...
heathy Posted April 25, 2005 Author Report Share Posted April 25, 2005 (edited) Sorry spot welds not rivets (thought they were rivets) There are 4 of them, I went up to a 8mm size drill bit not sure what that is in imperial measurements. I have seen the picture of yours that u did, I know it is too late now as I have already split mine, but how did you split yours, as yours looks a lot neater than mine Did it look as good as new when you welded it back together? or do you have a pic of the finished silencer? Chris I have already cut it along the original welds now, wish I had done it your way now it looks a lot easier and it looks neat, supose you wont even be able to see the weld when the heat shield is on. thanks Edited April 25, 2005 by Heathy Quote Link to comment Share on other sites More sharing options...
alan bechard Posted April 25, 2005 Report Share Posted April 25, 2005 8mm is about 5/16 and 10 mm would be about 3/8". I hope you are not drilling through with a regular bit as that will be a real challenge to weld back together. I cut them apart using what I would refer too as a whizzer wheel. A small (about 3" diameter by 1/16" thick) abrasive cutoff wheel. Commonly used in muffler shops. The thinner the better in my opinion for this task. I think Doug cut the first one apart with a dremmel tool and cut of discs I use the Whizzer wheels in my die grinder. I do not have access to one that I have put back together at the moment, but I think after my event this weekend, it is coming up a bit hotter on the plate to get done. Mine needs help and Dean's needs to be replaced as well. Dean's will get done before the Youth Nationals in July I am sure. Quote Link to comment Share on other sites More sharing options...
heathy Posted April 25, 2005 Author Report Share Posted April 25, 2005 I have just drilled the holes bigger, to 10mm. I did use a regular drill bit but was careful to make sure the hole was round, I am not welding it back together myself, I am going to take it to a welding specialist. The silencer still seems stuck in the middle, I am guessing that the spot welds hole the plate in place which seperates the packing from the wire wool? Sorry I got it wrong in my last post there are actually 5 welds, 4 on the front and one on the bottom. Quote Link to comment Share on other sites More sharing options...
nigel dabster Posted April 25, 2005 Report Share Posted April 25, 2005 So the carb is all sorted then???????????????? Quote Link to comment Share on other sites More sharing options...
heathy Posted April 25, 2005 Author Report Share Posted April 25, 2005 Yea the bike runs fine now well is has no exhaust but it will be fine once this is done if I ever get it apart Quote Link to comment Share on other sites More sharing options...
alan bechard Posted April 25, 2005 Report Share Posted April 25, 2005 Good greif,,,,, You really should put down the shovel when you find yourself at the bottom of a hole.... Get with whoever will be doing the welding before doing anything else and make sure you have left it in a condition where it can be put back together. You only want to drill through the top piece of metal when cutting out a spot weld. You do not want to drill through both pieces as then what are you going to weld too? While I commend you for taking some initiative, working on your bike yourself and looking for answers here on the internet, there is absolutely no substitute for learning from an experienced hand, especially on something like this. Get with someone experienced, that is willing to work with you, prior to cutting and drilling on something like this. I wish you the best of luck, but would strongly encourage you too seek advice from the person that will be doing the welding. Quote Link to comment Share on other sites More sharing options...
john.b Posted April 25, 2005 Report Share Posted April 25, 2005 Try Flavells in Thornaby. About 5 minutes from your location. Excellent specialist welding company. Virtually every trials rider on Teesside has used them at some time or other. Be warned though, they are welders and not magicians, they can't perform miracles! Quote Link to comment Share on other sites More sharing options...
heathy Posted April 25, 2005 Author Report Share Posted April 25, 2005 I phoned flavells this morning they said it will be about Quote Link to comment Share on other sites More sharing options...
john.b Posted April 25, 2005 Report Share Posted April 25, 2005 That is excellent value as I used to pay that 25 years ago to get my TY cases welded. Please try them as we have used them for all sorts of welding and they have never dissappointed. Quote Link to comment Share on other sites More sharing options...
bikespace Posted April 25, 2005 Report Share Posted April 25, 2005 John B - Teeside. You a plumber? If so, which John B are you, around 65 or around 40? David still trialling, or did he stick to rally cross? It's been 20 years - I may have missed bits. If not a plumber, ignore all above, you're the wrong John B. Quote Link to comment Share on other sites More sharing options...
the artist formerly known as ish Posted April 26, 2005 Report Share Posted April 26, 2005 I'm not really a welder Quote Link to comment Share on other sites More sharing options...
chris Posted April 26, 2005 Report Share Posted April 26, 2005 Alan Posted this in another post, thought it might help Have a look at this to 1 Quote Link to comment Share on other sites More sharing options...
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