smelling123 Posted November 15, 2014 Report Share Posted November 15, 2014 Not original but couldve been made in the day - Sammy Miller mid box and TY250 back box. https://www.flickr.com/photos/76022002@N08/15607628038/ https://www.flickr.com/photos/76022002@N08/15173317853/in/photostream/ https://www.flickr.com/photos/76022002@N08/15794317832/in/photostream/ A bit of work but Im happy with the result - cant comment on the sound yet... 7 Quote Link to comment Share on other sites More sharing options...
b40rt Posted November 15, 2014 Report Share Posted November 15, 2014 If it works as good as it looks, you could have a new job! 1 Quote Link to comment Share on other sites More sharing options...
steve Posted November 15, 2014 Report Share Posted November 15, 2014 The front pipe is really nice and looks very long which will bring the power in at low revs, It's quite a long pipe between mid and tail pipe though, what affect, if any, might that have? Quote Link to comment Share on other sites More sharing options...
johnmartin247 Posted November 15, 2014 Report Share Posted November 15, 2014 Looks fantastic, need more details on front pipe, what is the pipe from and how is it made up, i have read some thing some where about a sherco front pipe but not sure. cheers John. Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted November 15, 2014 Report Share Posted November 15, 2014 Very very nice Quote Link to comment Share on other sites More sharing options...
baldilocks Posted November 15, 2014 Report Share Posted November 15, 2014 Front pipe looks like a work of art Quote Link to comment Share on other sites More sharing options...
pschrauber Posted November 15, 2014 Report Share Posted November 15, 2014 Looks cool, is the exhaust designed in this particular matter, did you use any calculations or the rules of thump from Simon? Quote Link to comment Share on other sites More sharing options...
smelling123 Posted November 15, 2014 Author Report Share Posted November 15, 2014 Hi, Its not a Sherco pipe. The front pipe is made up of 316 stainless steel formed bends (available on fleabay) 90 degrees and a 45 degree one where it goes into the midbox. Midbox is the standard Sammy Miller one. alloy silenced is WES for TY250 with a small link pipe between the two. The frontpipe was made to fit the bike not to a particular design - as you say steve, the length will help the bottom end. I am a bit concerned about the inner diameter of the link pipe and silencer. The smaller this is, the higher then backpressure which can improve performance but if its too small can cause the engine to overheat when revved. Im going to try it and see how it works (the smallest diameter is the outlet of the end can - and as that was for a TY250, I dont think I have a problem). I used to build expansion chambers for some classic racing bikes but of course they wont fit on a trials bike.... 7 Quote Link to comment Share on other sites More sharing options...
mike350 Posted November 23, 2014 Report Share Posted November 23, 2014 Great job. A perfect front pipe is near impossible to find, so that is a really elegant solution, aside from the weight saved which is a bonus. I hope that it won't change the sound too much. If you ever feel like making another.... Quote Link to comment Share on other sites More sharing options...
pschrauber Posted November 23, 2014 Report Share Posted November 23, 2014 Would like to know something about the outcome aka performance and noise of the exhaust rebuild and modification in comparison, any news? 2 Quote Link to comment Share on other sites More sharing options...
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