NuVinci hub on a Grubee 4-stroke Frame Mount

Discussion in 'General Questions' started by Irish John, Jun 3, 2008.

  1. Irish John

    Irish John Guest

    I was looking at that NuVinci hub and it seems so amazing that I was wondering if there is any way it could be incorporated onto a left hand drive frame mounted Grubee 4-stroke rig. Can it be made to take the drive sprocket on the left hand side with the pedal chain still on the left? Has anyone got experience with these hubs to know if my wondering has any feasible substance or is it impossible?
     

  2. SirJakesus

    SirJakesus Guest

    You would have to do lots of mods to make something like that work. The NuVinci has to drive from the right side so you would probably need at least a jackshaft to get engine power to the right side of the bike.
     
  3. Irish John

    Irish John Guest

    Thanks Sir Jakesus. On the NuVinci website they talk about it's potentially limitless applications to things so maybe they might make one sometime specially for motored bikes.
     
  4. HoughMade

    HoughMade Guest

    I'm intrigued- My shakedown rides have revealed that with a transmission, this thing would be awesome- the standard setup is fine on the high end (sure speeds over 40 mph would be great- but not necessary)- what I want is to retain the 20-30 mph performance and give it more low end.

    There's no reason it couldn't work- in theory- but as mentioned above, the hub would have to be designed to drive from the left or both sides. To tell the truth, I'm not real interested in the crank and engine using the same chain- that's not how they did at the beginning (1900-1920).
     
  5. SirJakesus

    SirJakesus Guest

    The staton setup nuvinci has 2 sprockets on the hub, one for engine one for pedals, both freewheeling.
     
  6. HoughMade

    HoughMade Guest

    What are the ratios available internal to the NV hub? I know it's infinitely variable- I mean the lower limit and the upper limit.
     
  7. Irish John

    Irish John Guest

    It is infinitely variable as you say HoughMade. the video clip shows you just how it varies. You'd have a twist grip on the clutch handle to vary it. Top speeds would be a bit higher but I think it's really noticeable effect would be on hills which is where we currently lack pulling power.
    The previous message (Sorry, I can't see who wrote it) says Staton Nuvinci setup has two chain sprockets on the same side etc but that's on the right side so no good to us frame mounties. We need to get NuVinci to make us a special hub just for MBc members. The NuVinci MBc Jubilee Hub! I reckon it's the greatest invention since the wheel itself.
     
  8. SirJakesus

    SirJakesus Guest

    I'm sure you'll have more luck getting a jackshaft made to bring your engine power to the right side than you will getting a NV hub in left side drive.
     
  9. NMCruiser

    NMCruiser New Member

    I have completed my build of a Cadillac Fleetwood that comes with the Nuvinci hub. I fabricated a jackshaft to bring the power from the Grubee kit to the right side of the hub. I still have some refining to do (play with gear ratio and add front brakes), but the bike and hub work great. Here is a link to some pictures:
    http://www.motoredbikes.com/album.php?albumid=275
     
  10. psmcd

    psmcd Member

    Updates

    Thanks NM, and Irish, this is where I'm headed. Need gears for hills. I'm waiting for newbie Keith's notes on Monarch with Nuvinci jackshaft build.

    This is the future of MABs. Keep us posted on what you discover.
     
  11. SirJakesus

    SirJakesus Guest

    Nice, that baby must be a fantastic ride.
     
  12. Bigwheel

    Bigwheel Member

    Is it just me or are those pics really small and hard to see?
     
  13. Irish John

    Irish John Guest

    NM Cruiser, those pics are just great except the are too pixellated to make out anything in the detail. Do you think you could replace them with ones that are 1024 x 768 pixels. You can't do this unless you have decent originals to save them from. I didn't think the Cadillac Fleetwood was coming out until October this year. How did you get yours? Has the bike got a front brake?
     
  14. NMCruiser

    NMCruiser New Member

    Irish, I bought it online from Costco for $480, but I cannot find it on their website any more. I assume they are on back order as I cannot find them at abikestore.com either. No, unfortunately the bike doesn't have a front brake. However, it brakes better than my last MB with older rim brakes. I plan on adding front disk brakes in the future.

    I will post new photos tomorrow.

    It is a great ride, but I am going to change the gear ratio for the jackshaft to get better top end on the flats.
     
  15. NMCruiser

    NMCruiser New Member

    higher resolution photos

    I have added some new photos including closeups to the album. I tried to upload higher res. images, but the forum reduces it. I just realized the photos that I added are larger in size even though the resolutions are lower. I will repost all of the images so they will at least be larger.

    If you want higher resolution photos of any of the pics, send me a PM and I will email them to you.
     
    Last edited: Sep 14, 2008
  16. Mike S

    Mike S Member

    It seems like you would have a problem with one too many handgrips, one for the clutch, left side, one for the brakes, right side, and one for the Nuvinci trans, right side. How do you solve this? MIke S
     
  17. Irish John

    Irish John Guest

    I understood that the NV was operated by a twist grip on the left similar to the throttle on the right. The engager lever is on the left, the one and only brake lever is on the right. Pity it hasn't got springer forks cos these motors really need them due to increased speed. I wonder can it take a springer fork or is the head tube the wrong length like on a schwinn alloy 7.
    There are so many almost perfect bikes for motorising but then they have one or two really bad drawbacks.
     
  18. sparky

    sparky Active Member

    Staton sells a NuVinci kit that has a manual clutch? I don't think so.
     
  19. duivendyk

    duivendyk Guest

    The overall range of the NV hub is 3.5, that is from 0.5 to 1.75
     
  20. Irish John

    Irish John Guest

    Could you enlighten us as to what this means say in terms of ordinary gears like a rear derailleur or hub gears. I know that the front chain ring has a bearing as well but presume the front chain ring is 44T as per the usual Grubee kit.
    The Shimano Nexus 7 hub has a 36T front chain ring but when it's changed to a 44T it pedals along beautifully at about 45 km\hr which means you can pedal comfortably when motoring and it still feels nice so you aren't pedalling in thin air. Once you have a motor its the high end you need more than the really low end wouldn't you agree?
     
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