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Thread: Mailman delivered my new 200x “motor” today

  1. #31
    Join Date
    Aug 2016
    Location
    East of Worcester ma
    --
    1,326
    A little backyard machining today/// dumb luck that I had the correct size holesaw. For more speed I need this 30tooth sprocket mounted, the four bolts line up perfectly but needed to bore the center out for the axle washer. Probably could have removed the large washer but with lots of heat I most likely would have ruined the rubber cushions. The chain will clear the hub by 3mm.
    Pics
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    Shep
    And thanks again to dirtcrasher for cutting my front sprocket.....
    Last edited by Shep1970; 10-23-2018 at 02:53 PM.

  2. #32
    Join Date
    Jan 2017
    Location
    Bozeman Mt
    --
    46
    I'm no electric motor expert by anymeans but when you reduce power to the motor will it coast or will it cause engine braking to occur? not that the engine braking would be bad would just make it interesting to ride if it engine brakes. I know power tools or instance usually keep spinning but ive ran electric fork lifts that would brake automaticlly when letting off the the throttle and not sure if it was from the motors or what.

  3. #33
    Join Date
    Aug 2016
    Location
    East of Worcester ma
    --
    1,326
    Quote Originally Posted by deathwobble View Post
    I'm no electric motor expert by anymeans but when you reduce power to the motor will it coast or will it cause engine braking to occur? not that the engine braking would be bad would just make it interesting to ride if it engine brakes. I know power tools or instance usually keep spinning but ive ran electric fork lifts that would brake automaticlly when letting off the the throttle and not sure if it was from the motors or what.
    It’ll coast/ but not like being in neutral it will have a little resistance. I’ll let you know
    I can spin the motor by hand without a sprocket “not to easily”, but I think when there’s weight behind it/more leverage it’ll be fine(I think)
    Many go carts and buggy’s out there that are electric powered/ haven’t heard of anyone complaining about letting off power and the wheels locking up.

    Shep
    Ps. I’m no expert either........
    The term regenerative engine braking isn’t really “braking” its when throttle is off and motor is still turning it will produce power back into the batteries.

    Just ordered my tires-20-10x9 Click image for larger version. 

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    Last edited by Shep1970; 10-23-2018 at 06:04 PM.

  4. #34
    Join Date
    Jul 2018
    Location
    TN
    --
    1,065
    Oh that's cool! Especially if you have a lot of hills to ride. Once you pass the learning curve of riding it, getting a slight charge to the batteries every time you coast down a hill would be great!
    I was born and raised on Venus & I may be here a while.....

  5. #35
    Arky-X is offline Just Too Addicted Arm chair racerJust too addicted
    Join Date
    Feb 2017
    Location
    Arkansas
    --
    529
    Motor should coast with the only the bearings and any other internal resistance in the motor slowing you down (along with the rest of the drive train.)

    Some info on regen braking;
    https://www.diyelectriccar.com/forum...ead.php?t=8848

    Basically, regen braking is easier with an AC motor. Permanent magnet DC motors can but the controller has to be able to accommodate that as well. It is even more complicated with a series wound DC motor.



    Also want to consider a kill switch operating a breaker or fuse. If a controller fails, it is possible all the voltage is applied to the motor......and off you go!

    Looking good!
    Following this project.

  6. #36
    Join Date
    Jan 2017
    Location
    Bozeman Mt
    --
    46
    Didn't think the tires would necessarily lock up just very noticeable braking but like i said i really don't know much on the topic. Arky-X seems to know a lot about it and say your all good. Super interesting build none the less. What are those tires you ordered?

  7. #37
    Join Date
    Jan 2017
    Location
    Bozeman Mt
    --
    46
    Arky-X's breaker idea seems smart to, something i'd never think of but a run away bike with no kill switch sounds pretty sketchy.

  8. #38
    Join Date
    Aug 2016
    Location
    East of Worcester ma
    --
    1,326
    Quote Originally Posted by deathwobble View Post
    Arky-X's breaker idea seems smart to, something i'd never think of but a run away bike with no kill switch sounds pretty sketchy.
    Thanks, I was planning on a master disconnect switch/ something like this (pic) was going to put it where the gas filler cap would go normally, so it’s easy to grab if needed- started the mold for the plastic tank today-(it’ll take a lot of thinking) but it’ll be December before I pour anything, then I’ll pick a master switch that’ll fit good. And a volt/amp display in the tank somewhere too
    The tires are just cheap tires/ I didn’t want knobbies/ also really didn’t want 6/ply (more weight) but they’ll be fine. He likes doing donuts......they should slide easy.(I hope)
    Click image for larger version. 

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    Shep

  9. #39
    Join Date
    May 2015
    Location
    San Diego, CA
    --
    1,738
    Looking good!

    Maybe you already said but....what is the battery cost? Can the motor accept variations in watts/volts/amp/etc?

  10. #40
    Join Date
    Aug 2016
    Location
    East of Worcester ma
    --
    1,326
    Quote Originally Posted by knappyfeet View Post
    Looking good!

    Maybe you already said but....what is the battery cost? Can the motor accept variations in watts/volts/amp/etc?
    On quick searches the battery is anywhere from 500 to 800 dollars.
    Knappy, from what I understand a lot of guys “over volt” these motors- add 12v over what it calls for,
    This bike at this point will have a:
    72v battery
    72v controller
    My motor is only a 60v motor- the extra 12v will give some extra grunt without burning up
    The controller/ (brain) is programmable/ I have an electric thumb throttle that’ll wire into it to regulate speed/power

    Shep
    i figure just the battery we can take camping w/us- to charge phones/lights and things w/power converter (makes the battery cost almost ok)

  11. #41
    Join Date
    Oct 2002
    Location
    Northeast
    --
    17,438
    Don't do any of that backyard machining, just come to my house!!

    I am MORE than happy to help
    All our government does is distract us while they steal from us, misspend our tax $ and ruin our country

  12. #42
    Join Date
    Jul 2018
    Location
    TN
    --
    1,065
    Might not be a bad idea to add a boat/jet ski type kill switch with a tether cord. If it were to have a system failure and throw the rider, that thing could end up in the next county!
    I was born and raised on Venus & I may be here a while.....

  13. #43
    Join Date
    Sep 2014
    Location
    Oregon
    --
    591
    Cool project Shep! Interested to see how this turns out.
    Trikes owned:
    83 Honda 200x "Liquid X"
    81 DG 250r : Sold

  14. #44
    Join Date
    Jan 2012
    Location
    Austin, Massachusetts
    --
    1,591
    im a fan of the ICE, but to each his own. Its cool and different for sure. I wish you luck. Please do me one favor. In 20 years, when you've had your fun with this thing, and its been sitting for awhile, please please please post it on c-list and write, "Mint, wont run, just needs a carb clean"
    Wubba Lubba Dub Dub!!!!!

    TRIKES:
    86 250r
    85 250sx
    86 250sx
    84 Yamaha 225DX - Bruins Trike
    85 Yama 225DX - The Rental!
    150cc Piranha powered 70
    110cc Lifan 70
    82 70
    83 ALT 50 Trail Buddy
    88 Yamaha BW 80
    84 z50

  15. #45
    Arky-X is offline Just Too Addicted Arm chair racerJust too addicted
    Join Date
    Feb 2017
    Location
    Arkansas
    --
    529
    Quote Originally Posted by redsox View Post
    im a fan of the ICE, but to each his own. Its cool and different for sure. I wish you luck. Please do me one favor. In 20 years, when you've had your fun with this thing, and its been sitting for awhile, please please please post it on c-list and write, "Mint, wont run, just needs a carb clean"
    "No rust in tank"
    "High performance exhaust"

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