yellow_cad Posted September 5, 2011 Report Share Posted September 5, 2011 What is the best way to find and fit a spark arrestor on a vintage bike? Are there units that work with my existing muffler? I live in Northern California and have a 72 OSSA MAR. Quote Link to comment Share on other sites More sharing options...
mcman56 Posted October 26, 2011 Report Share Posted October 26, 2011 It depends on the shape of your muffler. These come in different shapes. http://www.summitracing.com/parts/CBE-EX9173/ Supertrapp makes some clamp ons https://www.pegasusautoracing.com/group.asp?GroupID=SUPERTRAPP3S One from a modern bike may also fit http://www.lewisportusa.com/parts_muffler.htm Some people replace the entire muffler with one containing a spark arrestor. Quote Link to comment Share on other sites More sharing options...
old trials fanatic Posted October 26, 2011 Report Share Posted October 26, 2011 What is the best way to find and fit a spark arrestor on a vintage bike? Are there units that work with my existing muffler? I live in Northern California and have a 72 OSSA MAR. Just bought a TR77 thats got one fitted as std. Bloody awful thing stifeles the motor something rotten. Cant wait to take it off and fit a proper silencer that doesnt choke the motor. Do you have to have them over there ? sorry i'm a bit unaware of the law in the states. Quote Link to comment Share on other sites More sharing options...
mcman56 Posted October 26, 2011 Report Share Posted October 26, 2011 (edited) They are required on all public lands in CA, National Forests and State/ County Parks. Most riding areas do inspect for spark arrestors and will ticket you if you are riding without one. Most also want to see the "ÜS Forest Service Approved Spark Arrestor" marking. I have not seen any differenece in performance with and without the spark arrestors I have used but you do have to keep the screen type clean. The US TLR200 Reflex came with a turbine type. Is your TR77 a screen or turbine type arrestor? Maybe you should sell it to yellow_cad. Edited October 26, 2011 by mcman56 Quote Link to comment Share on other sites More sharing options...
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