Best way to motorize my trike????

Discussion in 'Motorized Trikes' started by jawnn, Apr 17, 2009.

  1. jawnn

    jawnn Member

  2. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

  3. jawnn

    jawnn Member

    no friction motors for me thanks
  4. vegaspaddy

    vegaspaddy Member

    Last edited: Apr 17, 2009
  5. jawnn

    jawnn Member


    Is it possable to rig one closer to the frame?

    I may have to use an electric motor under the seat just to make it all fit and to elemintate the rear derraileur that drags in the grass on my way out tothe road.

    maybe rig a motor under the seat with a cassett on it.

  6. vegaspaddy

    vegaspaddy Member

    i will say this jawnn, anythings possible, all you have to do is spend time surfing around and you find fellow bikers coming up with amazing drive systems of their own accord or buy prebuilt kits and modify them to there needs.

    It just depends on your own level of engineering ability mine been 1 on a scale of 1 to 10 thats why i stick to prebuilt kits, with the name brand reliable engines. Start sketching up ideas of the system you envision, get some measurements, engine size etc and go from there,

    There are plenty of members in here that will give you the heads up on your design and lead you in the right direction etc. etc. but the more you post with diagrams, pics of your ideas, the more people will be able to help you.

    my first suguestion for you would be to get an idea of the engine you want to use and work from there designing your drivetrain. the mits 43cc (2 stroke) titian or honda 50cc (4 strokes)should all work comfortably for you with the right gear ratios.

    So if you think you can fit the engine under or behind the seat then you should be work out a system to power your rig this way.
  7. vegaspaddy

    vegaspaddy Member

  8. jawnn

    jawnn Member

    I may need a 2 hp electric tired in the drive trail like or I may have to add more space in the middle of the frame to acomadate a gas engine.

    does a cvt work in the rain? maybe I need a transmision and make a motor cycle....
  9. loquin

    loquin Active Member

    If you reconfigured your seat-back support, you could probably fit an engine behind the seat.

    The fact remains, though, in order to get a reasonable speed AND enough torque to get 400 lbs up a 14-15 percent slope means that you will need a variable gear ratio, and most likely, the Honda GSX-50 (or larger) 4-stroke motor...
  10. vegaspaddy

    vegaspaddy Member

    electric is the future thats for sure but unless you are building a custom trike its going to take up just as much room as a gas engine. Yes you have a resonable sized electric motor, but the batteries are the biggest concern.

    Lead acid which i use, two small 12 volts for my 500 watt motor does move the trike around distance increased with pedalling, but once you start tackling hills and extra weight you will need at least 48 to 60 volts, lead acid thats 4 to 5 batteries, litium-ion another power soruce but way too expensive.....

    Honestly for the weight i think the staton kit with the honda engine is whats going to fit you best, you will have plenty of power to be able to ride pretty much anywhere with the right gearing, a well designed kit built specifly for your bike, it costs up front, but i dont think you will have any regrets.

    Here is a video of the staton kit, been sold by another vendor,

    straight away you can see the quality of the build, just reconfigure your storage and you will have a realible mode of transport for many years to come,

    keep looking,

  11. biken stins

    biken stins Member

  12. If you put the drive on your front wheel then you would have a front wheel drive and even the sprocket can freewheel up front and the pedaling in back is not compromised.
    That's how my Buggy Bike is set up.
    CVT tomorrow via Fed Ex.
    I can't wait already!
  13. AussieJester

    AussieJester Member

    If you have the $$$ you can set up an electric that will do what your after. I use a 1000watt on my trike and it blasts up the hills steeper than 15% gradient towing my wheelchair behind it.

    Best of luck anywayz mate shall follow with interest as you project unfolds :)

  14. vegaspaddy

    vegaspaddy Member

  15. jawnn

    jawnn Member

    does a cvt slip in the rain?????? belt driven tranmission?

    some one just told me that I need a 2000 watt electric motor to drive 400lbs up a 14% grade.
  16. AussieJester

    AussieJester Member

    If you use a gearless hub motor you prolly would need more haha, advantage of non hub motor (such as a Cyclone kit) is you can run the lecky motor through the bikes gearing, hence turning the 'granny gear' on a bicycle into a wall climbing gear haha...
  17. It's covered so it never gets wet.
  18. vegaspaddy

    vegaspaddy Member

    just like jester said when you use the non-hub style, have the electric motor power a cog in line with the actual bike chain (instead of a hub unit turning a wheel) you can use the gears of the bike,giving you tons of torgue at the low end and good speed at the top end, so dont give up the electrics yet....
  19. jawnn

    jawnn Member

    Electric motors

    the only way to motorize this trike with out much adue about nothing is to mount a motor under the seat and conect tothe left side rear axil. I dont want to end up with one sided traction liike I have now.

    so will a cvt work with electric? and what size to get?

    a hub motor of the front will crate too much wheel flop, affecting the steering.
  20. AussieJester

    AussieJester Member

    if you connect the motor to the rear axle and drive both rear wheels (with the absence of a differential) your going to get A LOT of understeer It won't turn well at all...except on loose surfaces when the inside wheel can 'break free' of the ground. You need a differential if you want to power both rear wheels and keep any steering ability that resembles left and right turning...