Auto Shifter on eBay

Discussion in 'Transmission / Drivetrain' started by LR Jerry, Sep 3, 2014.

  1. LR Jerry

    LR Jerry Well-Known Member


  2. Fabian

    Fabian Well-Known Member

    It's a cool looking device; the kind of thing that you just "have to have", because it looks cool on the bike.
     
  3. troyg

    troyg Member

    Sure is silly to me.I know some are stymied by a 24 speed, but a 3 speed is all but "auto" already.I guess if you want to spend some money and add some weight it's useful.
     
  4. LR Jerry

    LR Jerry Well-Known Member

    If you have to manually shift its not automatic. Here in the USA many state's laws require an automatic transmission system. These laws even go as far as to say no manual clutching or manual shifting of engine driven gears by the operator. They say nothing about a fully automatic transmission system which shifts gears. Currently this is a legal loophole due to the way the laws are worded.
     
  5. LewieBike

    LewieBike New Member

    My concern would be that it doesn't index the positions of the gears so you might have problems with it jumping back and forth between gears at certain speeds. definitely not a precision solution and one that might kill your Nexus 3 gearhub.
     
  6. troyg

    troyg Member

    I'm just talking about a regular pedal bike, not a motored one.When I get to hills, I downshift and have my cadence meet the terrain, motor or not.If it's all done by a motor you have a "moped" not a motor assisted bicycle IMO.Lewiebike has a good point as well, I'm thinking the old Sturmey Archers, but if you didn't have them adjusted perfect on occasion they would go into netural AKA freewheel both directions, if you were standing and cranked you'd have to have superior balance not to fall off because of lack of pedal resistance.Lewiebike,... Coos Bay, very nice, I've spent time in Port Orford and there's nothing like mountains meet the sea, and sideways rain.
     
  7. LR Jerry

    LR Jerry Well-Known Member

    Here in the USA some of our states define a moped and a motorized bicycle as the same thing. Others don't want any self built motorized bicycles on their roads at all. The laws vary greatly from state to state. Some allow what you're talking about motor assisted by means of electric motors but don't allow motorized bicycled which are powered by a combustion engine.

    Of the states which allow combustion engines most want them to be under 50 cc. Large riders in mountainous regions are going to have to have gears. Unfortunately many of these states want an automatic transmission system. They even go as far to say no manual clutching or manual shifting of engine driven gears. The auto shifting is currently providing a legal loophole around this.
     
  8. LR Jerry

    LR Jerry Well-Known Member

    I have a 5 speed automatic bike. Been riding it for more than 4 years now. I use a LandRider. Made a custom freewheel (34,28,24,20,16). By widening the range between the gears it smooth out the shifting and improved the acceleration. I also turn the cadence adjustment screw on the derailler to the max along with some other modifications. LandRider warns you with a sticker on their bike not to leave the saddle and stand on the pedals. There's already a good range between the gears on a 3 speed IGH (75%,100%,133%). I've figured out a way to modify a LandRider derailleur so it could shift an IGH. It would work a lot like the Kildoff shifter. By adjusting the cadence adjustment screw you could control what speed the hub shifts at.

    In the beginning I was told there was no way what I wanted to build could work. None of what I was told would happen was true. One never really knows about the unknown until they begin to explore.

    http://youtu.be/pGDGIIdn--s
     
  9. troyg

    troyg Member

    All I was saying is, an auto shift on a pedal bike (without motor) is silly, intergrated with a motor is what you're talking about.From what I've read all the frictions and golden eagles are "motor assisted bikes" IC engines, not a moped.This whole site is about motor assisted bikes, most of which are IC, and that's what I was talking about.If you only pedal to start the thing it's a moped.
    Also laws don't "vary greatly" they differ a bit.For the most part under 50cc.A proper geared friction or goldeneagle will do all the hills and heavy humans with one ratio, but you must "assist", that should be easy to understand.
     
  10. LR Jerry

    LR Jerry Well-Known Member

    I've been on several forums for quite some time now. Many of my post have been in the legal section. If a person can't post the statute numbers and exactly what the law says then they don't fully know or understand what the law is. And yes there is a big difference between what some states allow and others don't.

    This forum is also about several kinds of builds as well. We have builders here whose bikes aren't ever ment to be ridden on the public roadways. Some are off roaders others are used on race tracks. Many of us here have built engine driven multi geared bikes. Because we know single ratios on 50cc and under engines will not pull heavy loads up extremely steep hills. Embrace technology don't be stuck in traditions. There are those of us who are up in our years and/or have health issues. Therefore we can give only a small amount of assistance. The mind must take over when the body fails. We may not go up an extremely steep hill very fast with a heavy load but we do get up them. My good buddy Fabian uses larger engines with engine driven multi geared bikes to pull monster loads up the side of mountains. So you see we have all kinds of builds here.
     
    Last edited: Sep 4, 2014
  11. butre

    butre Well-Known Member

    anything originally designed with pedals is a bicycle in my state. I could legally make a motorized bicycle that could outrun a Bugatti if I had the money and desire to do so. contrast with places like New York or California where pretty much anything worth doing is illegal and you'll see some pretty great variances
     
  12. troyg

    troyg Member

    I believe your standard of "worth doing" may differ a bit.I've been reading up and there are plenty of fast and cool bikes in Cali, it's worth it to them.Also from my reading here if you could frame mount and gear a robin subaru 035 and somehow mate it with a golden eagle you'd have speed power and lightness way below the 50cc limit most states have.I'll wager you couldn't build a bike that would outrun a Bugatti, regardless of money.
     
  13. butre

    butre Well-Known Member

    more importantly, I don't want a bike that could outrun a bugatti. I'm just trying to illustrate a point, not get myself killed.

    most of those fast and cool bikes in cali are either track only or registered as a motorcycle, and I'm not too keen on either of those things
     
  14. troyg

    troyg Member

    You're mistaken, I've seen nice friction and golden eagles that are legal and sweet as can be.This is a nice new reference.http://www.motoredbikes.com/showthread.php?43961-California-Confusion&p=385729#post385729
     
  15. LR Jerry

    LR Jerry Well-Known Member

    Well GEBE does have Robin Subaru 35 engine kits. I currently have an RS 35 on a Staton Inc gearbox. I weigh 250 lbs and the bike weighs a 100 lbs. In the lowest gear it'll pull 20% grade hills with no assist. 25% grade hills with moderate assist. 30% grade with a lot of assist. The reduction in low gear is 45:1. On level ground the top speed is 27 mph. The reduction in high gear is around 21:1. I already have a Honda GXH 50. When I up grade it the reduction in low will be 37:1 and 17:1 in high gear. Because of the higher torque and horse power it'll pull hills even better and should have a top speed on level ground around 33 mph.
     
  16. troyg

    troyg Member

    You are stating the obvious, now show me a frame mounted golden eagle.Your bike weighs 100lbs!!!?
    That's nuts.To me that's one of the ideas behind a motored bike, low weight to keep it handling like a bike.I've owned friction drives that would pull you up hills, up to 28 on flats, all with one spindle, loaded down with camp gear, only came up to 75lbs.Your gearing is neat, I'll just pedal assist and keep it simple, and light.
     
  17. LR Jerry

    LR Jerry Well-Known Member

    Well I do have a lot of stuff on my bike. I carry tools, locks, pump, have a basket which can hold up to 60 lbs. Plan to add a cell phone charger soon. Got head, brake, tail front and rear signal lights. A horn, tachometer, bicycle computer, mirrors and a 96 oz see through gas tank. So I think I did good holding the weight to a 100 lbs. A LandRider alone weighs nearly 40 lbs. A thick tube steel frame is less prone to cracking.
     
  18. troyg

    troyg Member

    A steel frame is better for motored bikes, but the tubes don't crack, the welds give it means it's a gaspipe frame, not double butted good steel.I hate to tell you, the landrider is a cheapo bike look up the reviews, you're paying for the auto feature and they cut quality at the frame and other components, that's why it's heavy.A full sized "entry level" recumbent alone weighs 38 to 40lbs.It's the bike and gearbox that are your main weight, but that bike is a walmart lardo.Here's a couple references:
    Re: Landrider Bicycle
    I used to be a mech at a bike shop (now defunct) that used to carry the Autobike, which is the Landrider in a previous life. The bike weighed 42lbs (yeah, REALLY LIGHT like they say in the infomercial). The back wheel alone weighed NINE lbs.
    http://www.cyclingforums.com/t/120679/landrider-bicycle
    http://www.bikeforums.net/general-cycling-discussion/37736-landrider-bicycle.html
     
    Last edited: Sep 5, 2014
  19. LewieBike

    LewieBike New Member

    I think that as long as the engine is automatically clutched it passes muster in most state by state instances. I'm wanting to do a shift kit with a Sachs 5 speed IGH, Sachs rates them for rental tandem use in Europe's fussy legal scenarios.
     
  20. LR Jerry

    LR Jerry Well-Known Member

    I'd have to look up your state's statutes but even with a centrifugal clutch if you're manually shifting engine driven gears its a semiautomatic not an automatic transmission system. Many states specifically state you can't manually clutch or manually shift engine driven gears. Granted many riders fly under the radar as long as they obey all traffic laws and don't ride like an idiot. However if you're involved in a multi vehicle accident you may very well be charged with operating an improper vehicle on the public roadways.

    As for my LandRider bike I got it at an unbeatable price. It was given to me. As for the reviews on this type of bike traditionalist cyclist were it biggest critics. It was something different from what they were use to; therefore it had to be wrong. Now I will say you do have to learn a few pedaling techniques to make it shift smooth. The LR bike is also best in areas where grades are under 15%. Over that then its not a very good bike. Yes the bike is over priced but you can buy refurbished ones.

    As for motorizing a bike I prefer the cheaper ones. It really defeats the purpose to buy a $1000+ bicycle and then put a motor on it.
     
Loading...