recumbent moped or logic malfunction

Discussion in 'Battle Scooters' started by frankz, Aug 18, 2010.

  1. frankz

    frankz Adventurer

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    well i was up late reading about a guy who converted a honda wave 125cc to a recumbent bike with a velo shell and upped the gas mileage to 235 miles per gallon @ 80 mph
    http://www.velomobiel.nl/allert/Recumbent motorbike.htm

    anyhow i have a suzuki fa50 with a shredded seat and i cant stand the auto oil mixing it (tries) to do.... always way to rich or i worry about it getting to lean...

    here is moped sorry about doing it with links its not wanted to let me post pics http://www.tradebit.com/usr/manuals/pub/9002/83-FA50-shuttle.jpg

    could a person chop the seat/tank along the angle of the frame mount the seat like the fella did for the honda wave and mount ft pegs on the front axle

    i was worried about putting to much weight on the front tire but if the pegs were mounted to the axle that would at least keep leg weight off the front shocks

    might not be the right forum for this kinda question but i figured id try..

    my interest is not so much building an aeroshell although ive been reading up on a acrylic heat forming.. but reducing overall front area... and using a trailing edge air foil.... ill see if i can get it to post the pics i made to measure the feetpeg to sitting area
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  2. frankz

    frankz Adventurer

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    #2
  3. approachbears

    approachbears 250cc is 50cc too many

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    I suspect that just putting some sort of front fairing will improve things overall. Its just my 2 cents, but why are you starting with such a crappy mule (its rough running according to you and it is old) apart from the fact that you already own one? Running a much newer, much cleaner burning engine seems a better fit for the real investment you're making in body work. It seems like you could pull the seat frame off a Honda Ruckus really easily for a recumbent shape. The Yamaha C3 has an incredible engine to work with, though the frame might be less recumbent-friendly.
    #3
  4. frankz

    frankz Adventurer

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    it is just a starting point... main problem with moped now is it has an auto mix on 2stroke... easy to bypass.. just mix oil at home

    im thinking making a seat would be under $20 and i have access to used plexiglass

    as well as sharing the idea... if its workable...

    i dont like 2 stroke of course which is the reason i very rarely ride it but chinese after market 4 strokes are cheap

    i would rather lose $20 on a bad idea than hack up a $600 used 150cc moped just to find out it might be illegal due to seat height...rider height ect ect

    just seems it would be a cool way to make something thats a bit diff...
    just got the idea last night so... you know how those go
    but ive been looking for something to do with that moped other than find excuses to ride it to keep it from sitting idle too long
    also just the random fun to see if you can add more than a few mph and mpg by streamlining
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  5. approachbears

    approachbears 250cc is 50cc too many

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    That's easy enough to find out, where are you located? A few states (like VA and Maine) have minimum seats heights of 24 to 26 inches, but many have no regulations. I don't know of any that specifically regulate rider height.
    #5
  6. frankz

    frankz Adventurer

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    kansas... i couldnt find any laws on it

    ill post pics if i hack into it... just didnt wanna wind up with something i couldnt sell or ride on the road legally.... or some other prob i havent thought of... im sure there are several

    anyhow i probably shouldnt have even posted thread as it was just late night reading and thinking.... and i have yet to really look over the situation closely...
    however when you chop the seat along the angle of the frame... that will make a nice place to bolt the top of the back rest on.... nice and wide to hold it stable
    #6
  7. approachbears

    approachbears 250cc is 50cc too many

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    Don't disparage posting this thread, this is exactly the kind of thing people will likely give you advice about even before you get serious.

    Anyway, I searched the Kansas Statutes and could find any specifics about motorcycle or moped seat height either. So you should be good to go. Maybe don't go crazy (12 inch seat or such) and you'll likely never have to worry about getting hassled by an ignorant cop.
    #7
  8. frankz

    frankz Adventurer

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    ok this is my last post until i decide for sure to chop the seat and tank area...

    but it appears the material to use that is light and very cheap is coroplast

    just thought id post this incase anyone else is looking at their old moped or cub thinking making a feet forward bike

    http://corrugatedplastics.net/48x96_Clear4mmCorrugatedPlasticSheets.html

    ill have to go play with some to see whether 2mm or 4mm is better for the job....

    just wanted to pass that along.....
    #8
  9. approachbears

    approachbears 250cc is 50cc too many

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    I've only worked with coroplast for signs, which are flat, so I don't know how well it shapes into curves. Didn't Vetter have some problems with plastic body panels on his Freedom Machine made from a Honda Elite?

    You might find more here:
    http://www.craigvetter.com/pages/470MPG/Last%20Vetter%20Fairing.html
    #9
  10. Cosmic_Jumper

    Cosmic_Jumper Been here awhile

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  11. ronnath

    ronnath Long timer

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    these guys:

    http://www.spadtothebone.com/SPAD/

    have done a lot of stuff using coro to make R/C airplane wings and fuselages, but i don't think they've done much bending along the length.

    i dinked with the stuff a bit and it's awfully stiff. by cutting out the ribs you can make a wing pretty easy as well as the fuse but trying to bend it against the ribs is real problem.
    #11
  12. fullmetalscooter

    fullmetalscooter Let me take this duck off

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    they is a whole feetforward yahoo group that can help you out. Just google it. More then one guy has done something like that .
    #12
  13. mac66

    mac66 Quasi Adventurer

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    Thread is really interesting. I looked at the Vetter site and he seems to be behind the curve compared to the feet forward crowd.

    I then read some of the other threads including several about the Ruckus. It hit me like a bolt out of the blue. (I just read one of the about responses about using a Ruckus) Those guys who lower and stretch the Ruckus have got a perfect platform for a feet forward/recumbent streamlined scooter. Throw a bigger GY6 engine in it and you would have a pretty cool aerodynamic cruiser.
    #13
  14. fullmetalscooter

    fullmetalscooter Let me take this duck off

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    In someways crags is a genus in other no. As H Ford said in court 1915 or so when getting sued." No I don't know that or that but I can always pic up the phone and get someone to find out what I need to know. Crag a great guy.
    #14
  15. mac66

    mac66 Quasi Adventurer

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    My state (Michigan) does not have a minimum seat height but it does have maximum handlebar height. The handle bars cannot be more than 15" above the seat. I've never seen it enforced. One need only to go to one bike rally to see some of the "ape hangers" that guys put on their choppers.

    The point is, if you lower the seat you may inadvertently violate the handle bar height requirement. I suspect that other states have similar worded regulations.
    #15
  16. fullmetalscooter

    fullmetalscooter Let me take this duck off

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    a simple tec from 100 years ago that is mostly forgotten is the fact that they used paper over a wood body to make boat, carts. They varnished with 4 or 5 coats which made it water proof and stable. Simple to repair if damaged. Got the info out of popular mechanic mags when someone build a small boat using the method. It would make a interesting light way to cover a slip streamed body. Anyway just an old strange way of building things. They used a heavy brown butcher type paper.
    #16
  17. mac66

    mac66 Quasi Adventurer

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    Seems like that would be heavy. The other issue that Craig Vetter addressed is cross wind. A full length fairing is a lot of area that is susceptible to cross wind which is why he and others leave a space between front and back sections.
    #17
  18. vortexau

    vortexau Outside the Pod-bay

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    In the mid-seventies I built a chopper based on a Honda XL-350. The frame was cut down to a drop-centre form which, combined with a lengthened swingarm suspended with shorter shocks, made for a radically lower riding position. Of course the rear mudguard (fender) had to be moved up higher in the frame.

    A small tombstone windscreen was attached to the handlebars and performed good duty in protecting the rider from the airstream.

    Road rubber went on the wheels and the gearing was changed by a factor of increasing the number of teeth on the drive sprocket. Engine speed was far lower than a stock XL, and the fuel consumption was in the region of 80-85 m.p.g. Imperial (66-71 m.p.g. US).

    This machine is shown in the middle of this line-up:
    [​IMG]

    Its difficult to pick-out the rider's seat (the rider's back-rest is visible) but its not much higher than the kickstart pedal & carburetor. When footing the machine stationary; the rider's legs were bent sharply. You could almost place a fullface helmet on the seat and still straddle that! The front forks remained standard Honda and the steering worked well at speed, but tended to flop at slower paces.

    If that had been fitted with a full dustbin fairing it would have needed higher gearing and 90+mpg Imp may have resulted. The 350cc single is one of the most fuel efficient displacements when balancing speed and usability. [FONT=Arial,Helvetica,Geneva,Swiss,SunSans-Regular]125-200 cc sizes [/FONT]may achieve better but speed during hill-climbing would be sacrificed.
    #18
  19. OregonGreenBud

    OregonGreenBud n00b

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    Aren't you a dead man pretty much the first time a semi blows by you at speed or at the first good unexpected gust at the wrong time if you use two wheels? On race tracks or salt flats it's one thing, but when just a few feet the wrong direction could put you into something solid, or worse something going the other direction...

    I jumped in actually because I had thought of this before but then decided a safer route, more usable machine all around would be to take a gy6 150cc scooter I have and hacking the motor and rear wheel out of and make what would look like a typical velocycle recument trike, two wheels in the front, one in rear like this:

    Except at speed front steering a trike, I don't know, could be really scary if not well laid out.

    You'd have to add a wheel, basic frame, and a little more work, but you could still use that scooter to start.

    [​IMG]

    A 3 wheel trike is road legal as a motorcycle, same laws, you would need to maintain the VIN part of the frame somehow in it though, just fyi, but it's no different than a person making a chopper bike into a trike you still register and insure it as the original bike, it's just faired.
    http://www.velomobiling.com/gallery2/main.php?g2_view=core.DownloadItem&g2_itemId=913&g2_serialNumber=4&g2_GALLERYSID=fd0a90f8fe8d4a297dc89b46bb78aa5e
    [​IMG]

    [​IMG]
    [​IMG][​IMG]

    [​IMG]



    I would want a long low bullet shape myself for high speed/long distance but there are all kinds of cool designs out there, just look on google images or whatever for velomobiles.

    [​IMG]
    [​IMG]

    [​IMG]

    Many of those are human powered only, that's why there's gatorade in this next pic, but you get the idea.
    [​IMG]

    [​IMG]
    #19
  20. YamaGeek

    YamaGeek Ancient trailbike padwan

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    I'd think a trike would be worse, no ability to dynamicly lean against the side wind or gust, much heavier construction. Trikes ( barring the MP3 design which can lean..) are notoriously unstable no matter what the configuration. You might as well admit you can't ride two wheels.

    As one who has ridden semi faired in recumbent (zipper bubble fairing on a LWB recumbent) in traffic, they're no worse than riding an upright commuter bike.
    #20