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GT500 2 stroke projects

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Thread: GT500 2 stroke projects

  1. #1
    Junior Member Piston pete's Avatar
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    GT500 2 stroke projects

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  2. #2
    Senior Member Geeto67's Avatar
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    Holy fucking shit!!!! A monotrack. Wonder if it is real.

    please don't be one of these dipshit cafe kids that is gonna hack up the black one for some pipeburn fodder.
    Last edited by Geeto67; 10-07-2014 at 09:09 PM.
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  3. #3
    Senior Member 8ball's Avatar
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    Well the calipers and wheels look real enough....
    I always find a soap box useful to get on my high horse.

    Quote Originally Posted by roccitycafe View Post
    .... same thing with furniture, it doesn't have to be straight or not wobble, or keep thing from rolling off it, or not collapse when sat upon, it's personal taste man... if I want a dining room set that endangers the life of my dinner party guests, then it doesn't need second hand approval

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  5. #4
    Senior Member goldy's Avatar
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    Your profile tells us nothing about you. Anyhow, those bikes have a whole lot of great potential...what are your plans?
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  6. #5
    Senior Member Geeto67's Avatar
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    Quote Originally Posted by 8ball View Post
    Well the calipers and wheels look real enough....
    Calipers, wheels, shocks, swingarm, frame, etc....basically the only thing suzuki on that black bike are the engine cases and the heads. Forks look like marzocchi road race units (I think the caliper mounts are disproportionate to be ceriani and the yokes are too wide, but it could be a trick of the picture).

    What I meant by "real" was whether it was built in Dan Hanebrink's shop or not back when he was operating as "monotrack engineering". It has all the goodies, and those wheels aren't really off the shelf units. Still, if it is a monotrack it's missing the signature monotrack bodywork.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
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  7. #6
    Senior Member jaguar's Avatar
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    I'm lazy and didn't google.

    whats a monotrack?
    I am Derby\'s Bitch


    Some times things come around that are so singularly inept it gives you a whole new appreciation for the ept

  8. #7
    Banned Witworth's Avatar
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    Dan Hanebrink woke up one day, and was more Eric Buell than Eric Buell would ever be, but didn't quite realise it.

    He built this thing in about 1971. Lets say he was a trifle creative.

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    "
    In 1971 "Cycle News" publisher Chuck Clayton asked Costa Mesa, California engineer Dan Hanebrink to sketch a futuristic machine of the eighties for a front page Christmas issue of the newspaper. From this sketch Hanebrink developed his ideas and the result, two years later, was the Monotrack Experimental. This design accounted for a large number of firsts in motorcycle engineering. The monocoque chassis was made from magnesium plate and a three-cylinder, rubber-mounted, two-stroke Kohler snowmobile engine provided power to the belt-driven torque converter. Drive to the rear wheel was also by belt. Hanebrink produced the 16-inch cast magnesium wheels on which Goodyear racing tires were mounted. The suspension had no springs, but relied on air and oil damping. The circular component on the fork bottom and rear strut contains a central neoprene diaphragm, which separates the oil and air. In use, the oil in the suspension struts compresses the air under load, allowing 41/2 inches of travel in the front forks and 4 inches in the rear. "

    He gave up on reinventing the wheel, and about everything else. He sold his own brand of mag wheels and superlight plasma brake discs, and other trick parts to racers for a while.

    Danger, is my business.
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  9. #8
    Senior Member Geeto67's Avatar
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    Quote Originally Posted by jaguar View Post
    I'm lazy and didn't google.

    whats a monotrack?
    You know the bodywork I have on Goldstein's old H1? That is monotrack. I even have molds for the seat but I don't know if they are Dan's original ones or if they are ones David made once he had the bodywork so he could make replacements.

    Witworth covered what's out there on the web, basically Hanebrink ran a company called Monotrack Engineering in the 1970's. I don't know how successful he was but he sold racing parts, mostly for old two strokes like brake setups, wheels, etc... He also build a few road bikes based on RD350s and early H1s (1969-1972) and a few race bikes for customers. Hanebrink is a former NASA engineer and he had some talented people that worked for him like Kent "Rocky" Rockwell who was well known for being the go to fabricator for WWII aircraft restorations.

    Here is Rocky on his shark mouthed monotrack yamaha:


    Dan is still around and doing cool stuff, he sells these quirky electric bicycles and "go anywhere" bicycles now:
    Home

    Monotrack bodywork is common enough, in fact airtech still sells the tank and seats Dan used to make, but some of the other stuff like brake calipers, wheels, etc are really rare because they were race stuff so they were never sold in high volume. I've never seen a set of his wheels on a bike that wasn't worked on by his shop , not that I have seen many of these sets of wheels in general (I've only seen one set in person).

    Last edited by Geeto67; 10-08-2014 at 08:59 AM.
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  10. #9
    Senior Member Teazer's Avatar
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    Frame: modified stock frame
    Forks: Ceriani 35mm roadrace but the triples look wider than normal.
    caliper: ?
    Disks: ?
    Pipes: Ocelot
    Wheels: Probably Montrack
    Tank: Dicks Cycle West or something similar
    Rear M/C: Hurst ?
    Front M/C: Suzuki

  11. #10
    Senior Member Geeto67's Avatar
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    Quote Originally Posted by Teazer View Post
    Frame: modified stock frame
    Forks: Ceriani 35mm roadrace but the triples look wider than normal.
    caliper: ?
    Disks: ?
    Pipes: Ocelot
    Wheels: Probably Montrack
    Tank: Dicks Cycle West or something similar
    Rear M/C: Hurst ?
    Front M/C: Suzuki
    Are you sure about them being ceriani? the caliper mounts look too big/wrong shape. I've seen similar ones on the 32mm ceriani road race forks though.

    I don't think monotrack made their own frames, they usually modded existing stock ones.

    either way it's certainly someone's 70's period race bike.

    caliper and dics are monotrack as they say monotrack on the caliper. Everybody used those hurst master cylinders, have a box of them from my dad's karting days in the early 60's.

    Don't forget the bars being magura also
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.
    - Samuel Beckett
    A tool is just an opportunity with a handle
    - Kevin Kelly

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