imexian Posted June 21, 2015 Report Share Posted June 21, 2015 Hi, how easy is it to open up beta evo 250 middle box for repacking? We have packed silencer, but it's still very poppy and crackly, any easy or a direction on what to do? Regards, Ian Quote Link to comment Share on other sites More sharing options...
dan williams Posted June 21, 2015 Report Share Posted June 21, 2015 I don't believe there is packing in the mid box, just baffles. Quote Link to comment Share on other sites More sharing options...
enrico Posted June 22, 2015 Report Share Posted June 22, 2015 Are you sure that you haven't re-packed it too tight? Thats what I did the first time, wedging as much stuff in there as I could, and it was terrible! You don't need to pack it tightly..... Good luck! Quote Link to comment Share on other sites More sharing options...
imexian Posted June 22, 2015 Author Report Share Posted June 22, 2015 packed it fairly loose ish, still loud, then rammed in a mega stack, still loud!! ?? Sound like middle box??? Ian Quote Link to comment Share on other sites More sharing options...
dan williams Posted June 22, 2015 Report Share Posted June 22, 2015 Do you have an exhaust leak at the header? Quote Link to comment Share on other sites More sharing options...
goudrons Posted June 24, 2015 Report Share Posted June 24, 2015 Have the 2 o rings inside the front end of the middle box perished? (they seal the front pipe to mid box) Mine had and it did sound a bit poppy. Quote Link to comment Share on other sites More sharing options...
dan williams Posted June 24, 2015 Report Share Posted June 24, 2015 If you're new to trials bikes you may be unaccustomed to how much compression a trials bike actually has. It's not uncommon to be sitting in line at a section and be hit by a pulse of air from a bike some distance away. A healthy bike will sound poppy at low RPM. Quote Link to comment Share on other sites More sharing options...
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