has anyone seen this?

Discussion in 'Motorized Bicycle General Discussion' started by sojudave, Nov 23, 2008.

  1. mechanickid

    mechanickid New Member

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    i didn't read this whole tread but i've seen then things going in videos. but they we're barely going, top speed of 15 and very little torque
     
  2. CalgarysFool

    CalgarysFool New Member

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    Wait a sec,

    I posted, but I didn't post a reason why it wouldn't work. Just a cynical theory about poor R&D practices.

    I don't think I should be included in your overly (generously) inclusive "every one who posted" statement. That wouldn't be fair.

    Brenton
     
  3. Creative Engineering

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    Brenton,

    I leave that entirely up to you. If you would like one it's yours fair and square. There were only a few posts as of this morning, so I decided not to pick and choose.

    Jim
     
  4. jacliny

    jacliny New Member

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    Jim,

    like your products, ACES!!

    Joe
     
  5. CalgarysFool

    CalgarysFool New Member

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    Jim,

    Thanks for being such a generously good sport. Tell you what, I'm waiting for a call from my local Felt dealer to confirm they can get me a Chief cruiser. Once I know I can get it, or failing that, who else will sell me one and ship to Canada, I'll be getting two of your clutch kits from you.

    Maybe you'd knock $4. off the total, or something like that.

    Brenton
     
  6. Large Filipino

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    I was thinking about this thread today and realized something about this wheel that cannot possibly work. The specs say it's an auto clutch. But to start it just pedal along then turn the throttle and it goes.
    You need a manual clutch for that very much like how a china 2 stroke would start.
     
  7. Technocyclist

    Technocyclist Motorized Bicycle Senior Technologist

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    Wow! Jim was really serious about this... Many thanks Jim... Just sent you an email... I hope I'm not asking too much... :)
     
  8. Clotho

    Clotho Member

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    The Revopower wheel isn't anything new. One of the earliest motorcycles used an in wheel design. In 1892!

    1892/3 Felix Millet

    However the most similar design to the Revopower wheel is probably the one that Singer produced as early as 1900. It too was marketed as a replacement wheel for a bicycle.

    1900 Singer Wheel

    1904 Singer Wheel

    Singer originally obtained the design from Perks and Birch and the look of it is suprising similar to the Revopower version.

    Perks and Birch

    Singer wasn't the only company to produce an in wheel design.

    Megola also did something like this:

    Megola Radial

    Yet another version was manufactured by Cyclemaster

    Cyclemaster Motor Wheel

    More on the Cyclemaster


    Also:

    B.S.A Winged Wheel


    B.S.A. Winged Wheel photo



    As you can see this design is neither new nor is it unfunctional.
     
    #28 Clotho, Nov 25, 2008
    Last edited: Nov 25, 2008
  9. Creative Engineering

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    Clotho,

    Nice research job! Interesting stuff...far more interesting than the Revo site.

    Can you image what a remake of the German Megola radial would cost today. $$$

    The BSA wheel on the other hand shows a design that has real potential for further development.

    Jim
     
  10. RLorange

    RLorange New Member

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    If you look at the two magazine PDF articles on the product it look to me like a real photo of the product. I wouldn't write this off based on principle, I can see no technical reason why it wouldn't work. No fuel pump is needed as centrifugal force would send fuel to the engine which is spinning, in fact this would siphon fuel out of the tank! Clever I reckon.

    Just because it is technically feasible does not mean that it will be mass produced however. It seems to be a less than ideal design, original yes but overly complicated and limited in power. What I would love to see is a premium version of the HT engine design with quality parts and built to higher specifications. I would happily pay twice as much for an engine that is twice as nice.

    Who wants a 25cc front wheel drive motorised bicycle which has not enough power and is front heavy. Think about hard braking with all that extra weight on the front wheel!
     
  11. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    Not true! I have a Bike Bug Auto that has a set up where you pedal it to start, and as soon as it fires up, it unlocks and goes into "centrifugal clutch mode". Sorta like thye Honda automatic CT's you could bump start them, but as soon as they started if you didn't add throttle would just sit and idle.

    The clutch could be activated by moving the throttle in the same way the Honda's shifter operates the clutch.
     
  12. Bikeguy Joe

    Bikeguy Joe Godfather of Motorized Bicycles

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    My whole problem with the revowheel is that they were or maybe still are soliciting investments, but have no product. They have been soliciting for a couple of years....
     
  13. Creative Engineering

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    The RevoWheel will probably fizzle-out. Hopefully there will not be too many people who end up financially hurt.

    Don't get me wrong...the guy may pull it off and make it a success...the web site suggests that it will be highly unlikely that this is a success. It's smoke and mirrors. I know to some this may sound odd...but I've been around this block many times before.

    I've been involved in new product development for years. Several times a year I am approached by someone with stars in their eyes and get rich products. The reality is always sobering.

    The design and prototype represent only a small fraction of the effort required to launch a product. Especially a product of this scale!

    Perceived value vs cost is the number one factor that will make or break a product. A new product MUST offer a benefit to the consumer that is in-line with the cost.

    The RevoWheel has a projected retail price of $600.00. I don't think this will make it, as far as perceived value vs cost is concerned. I'm sure at this point, (assuming this project is moving forward), the emphasis is on just how to produce this item at a realistic retail price.

    Down stream, (after the product launch),...quality issues, longevity, all contribute to the bottom line regarding profitability.

    Jim
     
  14. eDJ

    eDJ New Member

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    Didn't we have a RevoWheel thread a couple or so months ago ? Is this deja vu
    all over again ? :) The WW1 aircraft with their cranks bolted to the fuselage
    sounded familiar....Seems when I asked about the little Honda 50 with the motor in the rear wheel someone posted a photo of it.
     
  15. Dave31

    Dave31 Moderator
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    Here is the ones I found about Revo Wheel

    http://motorbicycling.com/f3/anyone-hear-own-one-these-3328.html

    http://motorbicycling.com/f3/wheel-hub-2-stroke-4744.html

    http://motorbicycling.com/f3/has-anyone-have-info-revo-power-2206.html

    http://motorbicycling.com/f3/new-concept-motorized-bicycles-39.html

    :ride2:
     
  16. Clotho

    Clotho Member

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    I don't really know what it would cost to build something like the Megola today but I imagine it wouldn't be cheap. The bike did do 80mph though.

    The B.S.A. winged wheel and the Cyclemaster are much more common than the others and you may be able to find one on Ebay if you look long enough. It may have some potential but I think redesigning the Chinese motors would be simpler and provide a better return. It really doesn't get much simpler than one of these Chinese 2 strokes. There are already thousands of people familiar with the design and many would be interested in greater performance or reliability.

    Thousands of potential customers and they all have a bike that is already setup for one of these engines.

    I know I would be interested. I would also love to see one with the drive on the opposite side. The Shift kits work well but simpler is still better.

    The powered wheels are interesting but they don't really interest me. They will never have enough power due to space restraints.
     
    #36 Clotho, Nov 26, 2008
    Last edited: Nov 26, 2008
  17. xPosTech

    xPosTech The Old Master Motorized Bicycle Builder

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    It really shouldn't be all that hard to take power off the other side of the clutch. Jim (Creative Engineering) could do it, no sweat. Leave the actuator where it is. Mainly just another clutch cover with bearing and output sprocket.

    That would leave the other end of the clutch shaft for the hydraulic pump. For the lowrider shocks/drops. rotfl

    Yeah, I dream a lot. But I did cut out the technicolor! :rolleyes:

    Ted
     
  18. Creative Engineering

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    I am nearly finished with another assembly for our guys in Iraq. I probably won't have an order for another until January...Bike Time!!!

    I've had quite a few who have said they would pay for a well prepped engine.
    The fun of this hobby is the fact that it's relatively cheap.

    Let's look at the ways that we can maximize what we already have, with simple inprovements before going to a full blown rework. Of course I will share my ideas regarding improvements.

    Yes I can do a major rework in my shop for my own entertainment, but that doesn't mean it's practical!

    I just do it for fun.

    Jim
     
  19. eDJ

    eDJ New Member

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    I posted a new thread yesterday with a animated 2 stroke motor drawing. The site has several forms of motors illustrated with animated drawings.

    But the one that gets closest to this "In wheel" concept is the "Gnome" cycle engine. Like the WW1 biplane fighters used.

    Animated Engines, Gnome

    As I sit thinking about it, I'm seeing a 3 cyl radial engine of 25cc per cylinder.
    The crankshaft would have to be the axle too with the crank case carrying the
    wheel bearings and serving as the hub for the spokes. No doubt the axle
    would have to be secured to the frame to keep the motor indexed.

    What I'm wondering about is whether the lacing of the spokes would require the ommision of spokes in three regions fo the wheel to provide clearance for the cylinders. This could be a challenge for those of us here who specialize in wheels.

    I figure the carb would have to vent into the crankcase thru the axle on one side, while the ignition system KILL switch circut would have to come out of the other side axle. ( the unitized magnito/hall effect switch units would be on the side of the crankcase with the spark plug wires traveling to the top of each cylinder head ) So a 50cc set up would have 3, 16cc displacement cylinders, and a 3, 23cc cylinders could net a 70cc set up.

    There is no provision for advancing the timing, but I wonder about an electronic dwell extender circut build into the ignition to compensate for an advance mechanism.

    I could imagine the mufflers extending between the head and the rim
    with a short piece of tubing leaving at an angle to vent the exhaust
    close to the road during the exhaust cycle.

    Any bicycle could be used with such a wheel but the dropouts on the back would have to be retro-fitted with special fastening plates that the wheel bolts into. Otherwise the carb & cable are on the outboard side of the bike and the fuel tank could mount under the seat with a fuel line to the carb.

    ........but since I found that animation of engines web site, I can understand this concept better now.
     
    #39 eDJ, Dec 3, 2008
    Last edited: Dec 3, 2008
  20. Finfan

    Finfan New Member

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    How would you idle an engine like that?
     

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