when was the last 2cycle street bike made

Discussion in 'OT Driven' started by flynfrog, Aug 30, 2002.

  1. flynfrog

    flynfrog Cool isnt Cheap

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    any one know i love two strokes and thought it might be a unique bike to have

    ive seen some old yamaha GP bieks but you had to slip the clutch to 60mph do to the high gearing for GP racing i want one
     
  2. Short Bus

    Short Bus Beep beep!

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    The Aprilia RS50 is a two stroke, right?

    How about an old YSR 50? :big grin:
     
  3. flynfrog

    flynfrog Cool isnt Cheap

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    i was thinking more like the old yamaha 350 twin or the 600 I4

    teh 350 twin was the motor they based the banshe motor off of but i cant seem to find one
     
  4. flynfrog

    flynfrog Cool isnt Cheap

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    A few years ago a friend of mine who had just started duning asked me a question while we were sitting around the campfire at the Pismo Dunes. He asked "If you had my LT500 and wanted to put in the coolest/baddest 2 stroke engine you could - what would it be?"

    Without hesitation I responded with "The RZ500!"

    After I told him what it was, how rare it was and how much it would cost I thought I would never touch that topic again.

    In case you don't know what it is - it is a Yamaha motorcycle with a 500cc V-4 2 stroke engine. Two of the cylinders are case reed design and two of them are cylinder reed design. It has two cranks, a counter balancer, electric exhaust port control valves (YPVS - power valves) and the sound of a real road racing 2 stroke motor. Maximum rpm is about 10000. Stock horsepower is about 90.

    Anyway, the next day he called me to tell me he had located a compete RZ500 street bike. He wanted to know if I would put the engine in the LT500 frame if he bought it. I would...

    He bought the bike and we brought it home. Before taking anything apart I wanted to take it for a ride since there are so few of these models in existance. I hopped aboard headed toward the freeway and let her rip. Since the gearing was patterned after a grand prix road race motorcycle, I had to slip the clutch in first gear all the way to about 50 mph - talk about a tall first gear. From there on up the gears were spaced more evenly - with the changes from 3rd to 4th to 5th to 6th seeming like a perfect fit and match for the power. By the time I had found the red line in 6th gear the speedometer was reading 165 mph.

    I found out since then that that indication was highly optomistic and the speed was probably only about 140. Either way it was the fastest I had ever been on a two stroke.

    After my ride I removed the engine from the frame and completely disassembled it for a rebuild. This included ordering parts for the engine from Canada since there was no official Yamaha parts book for it in the USA. The motor got new bores with 1st over pistons and all new seals and gaskets. This was going to be a stock rebuild - not a ported modified one.

    To make this story shorter - I'll cut to the chase. The bike is an LT500 frame with a completely rebuilt RZ500 engine in it. It has 4 custom made, chromed pipes with aluminum silencers attached to each. The YPVS is fully functional and features the stock tachometer above the handlebars. It has a +10 over Lonestar Racing swingarm and Marvin Shaw shocks all around. The tires are 10 paddle Haulers in the rear and Razorbacks up front. It has a custom aluminun fuel tank feeding the stock carbs. The electrical system is stock.

    This is a most awesome looking quad. When riding it you notice two carburetors sticking out in front of each leg when you look down. From behind you see 4 exhausts. One attached to the outside of each footpeg and two neatly tucked in under the seat. The sound this motor produces is unreal. It is simply music to the ears. It turns heads where ever it starts up.

    The sad thing about this is that my friend put too much money into this thing - somewhere in the neighborhood of $10000 - not including the cost of the LT500. Right now he and his wife have a new baby so that makes this quad for sale - some of you know what I mean. Projects like this are never really finished because they are the passion of those who need to make them possible. If you think a quad like this is what you want and you are willing to become part of this dream, email me.

    Rick

    By the way, the RZ frame and everything else was sold immediately after the engine was removed to recover some of the costs of the project.

    [​IMG]
    [​IMG]
    [​IMG]
    got wicked?
     
  5. flynfrog

    flynfrog Cool isnt Cheap

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    edit it was a v4 500not an I4 600
     
  6. car54

    car54 Guest

    there is no freeking way you typed that whole thing up by yourself... its way too good to be true
     
  7. flynfrog

    flynfrog Cool isnt Cheap

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    copy and paste :X
     
  8. bubbat

    bubbat "So many idiots, not enough bullets"

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    They still manufactor 2stroke streetbikes they just don't sell them in the U.S. because of EPA regulations.
     
  9. Tomee

    Tomee Heel and Toe OT Supporter

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    so u guys over in the states arent alowed any 2 strokes?
     
  10. flynfrog

    flynfrog Cool isnt Cheap

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    on dirt bikes we are:p
     
  11. scourge

    scourge Guest

    Allowed? Do you mean by that the police don't know the difference between a 2-stroke and a 4-stroke street bike and thus don't pull people over? If so, then yes, Americans are "allowed" to ride 2-stoke street bikes. Of course, it always helps when the rider is a police officer and is thus immune from being found out! :cool: Sometimes, Tennessee's backwardness can be beneficial.
     
  12. Tomee

    Tomee Heel and Toe OT Supporter

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    damn that must suck not being able to ride 2-strokes race bikes legally :)
    hehe makes me love living in australia :big grin:
     
  13. flynfrog

    flynfrog Cool isnt Cheap

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    wana ship me one over :naughty:
     
  14. $entenza

    $entenza Saudade, Beco.

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    Here in thailand the 2 strokes arwe still going string.. although they have tried to stop sales...
    Ill take some pics.. they are mostly single cylinder short stroke engines...
    The thai bikers here are notorious for the night racing... they get their 150cc's to 200Km/h, they are fucking crayzee!!!! damn.. i'll take some pics of a bike if i see one...
     

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