motorized xtracycle

Discussion in 'General Questions' started by oldanintheway, Feb 6, 2009.

  1. oldanintheway

    oldanintheway New Member

    Anybody put a motor on one of these. Im thinkin 2 stroke with a sick shift kit. Its got a 9 speed internal hub on it now but I have the spokes and disc hub also. The big dummy frame might be better but you can buy a motorcycle for the price of one.
     

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  2. Happy Valley

    Happy Valley Active Member

    Been done. Personally wouldn't recommend a frame mount, w/or w/out a shift kit, too long a running chain w/out weird tensioners or transfer hubs.
    Doesn't mean it couldn't be done, that's just me as I stay away from HT engines for any bike.
    xtra.jpg

    xxx.jpg

    Or how about electric?
    stm1.jpg
     
    Last edited: Feb 6, 2009
  3. oldanintheway

    oldanintheway New Member

    I like the 4 stroke. Ill have to think about the drivetrain some more. IE seperating the peddle chain from the drive chain so they would work independently. The stokemonky is out for the same reason as the big dummy frame. Thanks for the pics and reply..
     
  4. POPS

    POPS Member

    Happy
    Where did you get the third picture, of the electric? Do they have a web sight to sell that kit ? Thanks >>>POPS
     
  5. Happy Valley

    Happy Valley Active Member

    Here ya go, pops.
     
  6. POPS

    POPS Member

    Thanks alot HAPPY
    I was really interested in that dual crank...POPS
     
  7. Pablo

    Pablo Motored Bikes Sponsor

    I think you should go for with a frame mount. That is a long right chain, but it works with pedals, right? It looks like the shift kit would work.
     
  8. mabman

    mabman Member

    Keep in mind that in OR the legal cc limit for gas engines for motorized bicycles is 35cc. That means if you want to be legal then the HT engines are out anyway. That leaves the Subaru/Robin 35cc or the Honda 35cc which at this time can be set up like the above picture staton style or Gebe style, neither of which is going to work well in the front triangle or at all actually. You may be able to set up a Gebe in the rear triangle however it looks like? Hard telling from the pic but it would be the most legal alternative also because it would be an automatic drive which is also a requirement down there in OR. It leaves your current drive side alone which is good because it gives you your range of gearing to get around with without the motor or to help the motor out at the lower end and the top end too.

    Putting an assist motor on a cargo bike makes all the sense in the world to me. I have ridden a fully loaded cargo bike and they are slugs off the line and uphills which is the very thing that the assist will aid. If you can wait a bit there may be a system coming down the pike that will suit your needs nicely and will be showcased in the Portland area later this Spring if all goes well.

    As long as pics are being passed around this is the one extracycle one that caught my eye off of their site:
    morganfriedlandxtracycle.jpg
     
  9. oldanintheway

    oldanintheway New Member

    Thanks Pablo and Mabman.....I think the in frame with a shift kit would go in easy, and im not particulary worried about the long drive chain. I could use a beefed up bmx chain and probably be ok. The issue for me i guess is the leagality in or. This bike has become my regular rider. We go shopping , picnicking etc and it usually has sumthin in or on the carrier or bags. Soooo, im leaning twards the suburu or honda motor. Now to come up with a mount. It looks to me there is plenty of room and a number of practical mounting points available. The real quandry for me is the drivetrain. Im not sure how an (automatic drive ) works and if you could suggest where i might find a discription or some pics that would be great. I can figgure how to drive the rear wheel but just unsure haw to incorporate the gears wo a jackshaft, which i dont want. I guess i need to get more familiar with how the gebe and station driveterains work. Would one of those options allow me to use the bike and gears without the drag of the clutch .?? i dont care about the weight, its a cargo bike LOL... Jeff
     

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    Last edited: Feb 8, 2009
  10. mabman

    mabman Member

    Gebe info here: http://www.bikeengines.com/

    In order to be legal you will not be able to plumb the motor drive in to your bikes drivetrain, it is being done all the time however at this point and while I see no harm in it personally, the letter of the law reads differently.

    So look at it this way. If you use a system like the gebe where your motor drive is off the left side of the bike you are separating the motor drive in to a single speed situation? But the human side can have as many gears as necessary and what that will do is complement the single speed, and thereby automatic also, aspect of the motor whereby you can help get up to speed by pedaling while accelerating and keeping pace with the rpms/torque of the motor by pedaling alongside the motor drive which is what I term Motor Assist. If you want a motorized bike with an auto drive you may still have a gear on the human side that will help to launch off the line, but run out of gearing shortly after and just let the motor do it's thing. Both have positive results but as you may discern the MA system will ultimately yield better mileage and allow for some fitness gain also?

    These are just my findings based on my experience with this bike:
    DSC00829.JPG

    Which has a 49cc 1.5 hp 4 stroke Hua Cheng and is legally non-compliant due to the motor being plumbed to the freewheel. The Robin engine weighs 4 lbs less and is rated at 1.6hp in comparison. I always shift down to mid range when stopping to get some off the line torque, which including pedaling I find myself getting up to speed faster than the cars I am lined up next to at the stopsigns/lights. However I run out of gearing fast, say 25 mph and until I drop back to that speed pedaling is basically a placebo. Alot of this is due to the 20" rear wheel and its affect on the final gear ratio's available but when you separate the drives as I said before it is much easier to find a gear with resistance on the human drive side to complement the motor drive at all times.
     
  11. oldanintheway

    oldanintheway New Member

    Very informative Mabman... Ill think on the MA vs the autodrive. I do use mostly 2 or 3 gears and if I could find the best gears for the engine and rear wheel this could work real well. I could chain drive the rear wheel on the left and with an adapter still use the disc on the rear, lots of room there..Might have to alter the bag attachments but no biggie. The simpleness of one cog on the peddle side does appeal to me, with the right gearing. 20 or so mph is all I would want anyway...
     
  12. mabman

    mabman Member

    You are allowed 25 there and you will want to go there once you get in to it. But don't discount being able to go up to 30 because it is useful at times to deal with the flow of traffic.

    I want to be clear about the drive I described because I am a bit confused by your post. The motor would drive the left side of your hub with a set of sprockets off a gear reduction on the motor that would either favor low or high speed. This is the main reason that people are going the gearing route because they are not interested in pedaling. Anyway I would suggest low in your instance. Your drivetrain would not have to change at all from your current setup as pictured as it would be used to help the motor get off the line and to assist it to the top speed and on hills.

    As an aside, the biggest reason that people run stop signs on bikes is because starting from a dead stop is hard. This is causing lots of problems in urban areas. With your motor setup you will be happy to obey the law, even fully loaded, because getting going is easy and actually fun because you know how much effort it has been all these years. 150 mpg+/ gal is also nothing to sneeze at and imagine if even 1% of the population of Portland alone used this type of vehicle for their single person/purpose needs. Less overall energy use, less congestion, ah, one can only dream......or be part of the reality.
     
  13. oldanintheway

    oldanintheway New Member

    ahhhhhh....I think I understand now. I did some research and now know I need to reduce the output from the engine, IE the station gearbox, which looks perfect for this application. So my only real confusion is how to attach the drive cog to the left side of my rear hub.I could fab an adapter to use both brake rotor and rear cog. Would that work? And by the way, thanks for your patience. I have learned alot from this discussion Jeff
     
  14. mabman

    mabman Member

    There is a ton of info on here on how to do that. A guy code named milegajo here has a hub that does exactly what you want, you may want to search his posts for it? Otherwise an adpater can be made for sure.

    No worries as I like Portland alot and see much potential there for MAB's as there are alot of folks that can see the forest for the trees. It is important to all involved though that what gets popular there is a legal machine I feel so that it doesn't end up mired in BBS and get a bad rap that will slow down the movement.

    BTW, my oldest son is going to be moving there perhaps by early this summer and I lived in Astoria for years.
     
    Last edited: Feb 8, 2009
  15. oldanintheway

    oldanintheway New Member

    I to feel we need to be responsible for what, and how we ride. Thanks again and feel free to contact me if you are in the area...
     
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