helicopterjim R.I.P. Posted October 27, 2005 Share Posted October 27, 2005 Name the manufacturer, displacement and explain the unique exhaust system. Link to comment
big J Posted October 27, 2005 Share Posted October 27, 2005 Was that a bombardier with a snowmobile engine, around 500cc? The exhaust was like that because the managers brother was a plumber and looking for work. Link to comment
mike wilson Posted October 31, 2005 Share Posted October 31, 2005 Name the manufacturer, displacement and explain the unique exhaust system. 64901[/snapback] Coming in from way out on the left field, I'm going to say Silk, 650cc and not a bleeding clue about the exhaust, unless it was designed to sound like a Phantom jet. As the original CBX allegedly was. mike Link to comment
Admin Jaap Posted October 31, 2005 Share Posted October 31, 2005 Silk was yet another british "Worldbeater" with a modernized 2-stroke Scott engine ....Googling for a pic....found one! It seems the bike above is not a Silk. But I haven't got a clue either... Link to comment
mike wilson Posted November 1, 2005 Share Posted November 1, 2005 Silk was yet another british "Worldbeater" with a modernized 2-stroke Scott engineIt seems the bike above is not a Silk. But I haven't got a clue either... 65409[/snapback] Not a standard production model, anyway. Might be a protoype with a new engine. I recognised the frame style. We shall see. They were lovely machines, although somewhat thirsty. BTW, thanks for the previous point. I think I might be getting addicted. mike Link to comment
Admin Jaap Posted November 1, 2005 Share Posted November 1, 2005 Jim, we need a clue! Link to comment
helicopterjim R.I.P. Posted November 1, 2005 Author Share Posted November 1, 2005 OK. big j was on the righr track! Link to comment
big J Posted November 3, 2005 Share Posted November 3, 2005 Hokaly dokaly,have another go... Can Am, 500cc, double expansion chamber exhaust? Is Can Am and Bombardier the same company? Looks like a Can Am scrambler colour scheme and a Bombardier snowmobile engine. The exhaust to meet noise/emmissions regs? Link to comment
mike wilson Posted November 3, 2005 Share Posted November 3, 2005 The 1977 500cc CanAm street bike never made it into production. Only 2 or 3 prototypes were ever built (circa 1975). One was a street version which produced about 60 horsepower, while the other was an 85 horsepower road racing version. The engine was borrowed from a Bombardier snowmobile and modified to accept a 5-speed gearbox. The powerplant was liquid cooled and utilized a single horizontal rotary valve. The exhaust system was unique. The lower pipe on each side was an expansion chamber, and was connected to the top pipe (mufflers) with a small tube. This allowed expansion chamber performance while remaining quiet enough for street use. This machine never went into production because proposed EPA emission standards threatened its marketability in the United States. Tony Murphy wrote a magazine article about this motorcycle in 1976. He recently informed me that the prototypes are still running strong somewhere in Canada. Link to comment
helicopterjim R.I.P. Posted November 3, 2005 Author Share Posted November 3, 2005 Wow! This is going to be a tough one. Big J was first by about 12 hours and is close to being 100% right. Mike Wilson is definitely 100% right (he may have written the article where I got my information it is that close). I am going to have to think about this one for a bit. Link to comment
badmotogoozer Posted November 3, 2005 Share Posted November 3, 2005 This was a stumper!!! Being a good Canadian kid from Manitoba I recognized the Bomby engine right away... but the rest was a brain bender! I'd give the nod to BigJ on this one... Rj Link to comment
mike wilson Posted November 4, 2005 Share Posted November 4, 2005 Wow! This is going to be a tough one. Big J was first by about 12 hours and is close to being 100% right. Mike Wilson is definitely 100% right (he may have written the article where I got my information it is that close). I am going to have to think about this one for a bit. 65868[/snapback] Sorry, Jim, my post should have been in quotes. It was a hard article to find 8-) Big J is definitely the winner wrt make, etc. My post was just to confrim details of the exhaust. mike Link to comment
helicopterjim R.I.P. Posted November 7, 2005 Author Share Posted November 7, 2005 Sorry, Jim, my post should have been in quotes. It was a hard article to find 8-) Big J is definitely the winner wrt make, etc. My post was just to confrim details of the exhaust. mike 65929[/snapback] Thanks and well done to both you and Big J. I was hoping for more from Ryan and Steve but....... Link to comment
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