Power in Flux
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Thread: 1980 Kawasaki 440 LTD 8kW conversion

              
   
   
  1. #21
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    If pictures say 1,000 words, videos say a million.

    I thought it was a great idea & looked kool too. (you could also call it Mechanical Art)

    It seems to work well. I did lots of "on the stand" testing & have put ~30 miles on this set up so far with no issues.

    * I don't believe my DIY rear sprocket is exactly centered or "true" because, if you listen in the videos, you can hear the chain "slap" a little bit on the chain guard, every now & then.
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  2. #22
    Senior Member Ted Dillard's Avatar
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    1) ...for the LOVE OF ALL THAT IS PURE AND RIGHTEOUS please use a frikkin TRIPOD on those videos (old photographer/videographer here, speaking with love in my heart)

    2) So, when the suspension gets loaded, does the chain tension change? (answer: yes)
    Power in Flux: The History of Electric Motorcycles
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  3. #23
    Senior Member Ted Dillard's Avatar
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    it's ok. i took my meds and watched this video and now i feel much betterer.

    Power in Flux: The History of Electric Motorcycles
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  4. #24
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    Quote Originally Posted by Ted Dillard View Post
    1) ...for the LOVE OF ALL THAT IS PURE AND RIGHTEOUS please use a frikkin TRIPOD on those videos (old photographer/videographer here, speaking with love in my heart)

    2) So, when the suspension gets loaded, does the chain tension change? (answer: yes)

    Thanks, for the input

    1.) I use a tripod when I need both hands "free" for the project or demonstration I am working on
    ...but, most times I find that it's too limiting
    ...the tripod gets in the way & I end up banging the camera on stuff

    2.) the answer is NO. The motor, the "idler" & the rear wheel are ALL mounted to the swing arm
    …& ALL move as (1) unit
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  5. #25
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    Quote Originally Posted by T Rush View Post
    ok, now I see what(why) you are doing
    ....but why does it still have the exhaust pipes on it?
    I wanted to maintain the "original/stock" look of the bike as much as possible.

    IMO
    Without things like the fuel tank & exhaust pipes you lose "the look" of a motorcycle
    ...it's just a skeleton of a motorcycle, with no style or class
    & those few extra lbs. won't make a noticeable difference
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  6. #26
    Senior Member Ted Dillard's Avatar
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    Ah gotcha. I missed that because I couldn't watch the vid for more than a few seconds...

    Seriously, though, JUST because I've taught photography most of my life, do you want people to take their time to watch your work? Especially considering your "Artist" tag, my advice is to invest a little more of yours making them watchable. Otherwise, there's not much point in making them. Besides, once you get used to using a tripod, you soon start wondering how you worked without one. Above and beyond anything else, it makes you think about your shots, composition and storytelling a little more deliberately.

    Stepping down now, carry on.
    Last edited by Ted Dillard; 21 August 2018 at 1006.
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  7. #27
    Senior Member Stevo's Avatar
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    Current rides: '96 Honda Ohlins VFR, '03 Cannondale C440R, '03 Cannondale Cannibal, '06 Yamaha 450 Wolverine 4x4
    Current builds: WORX.VOR.v3.2
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  8. #28
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    Quote Originally Posted by Ted Dillard View Post
    Ah gotcha. I missed that because I couldn't watch the vid for more than a few seconds...

    Seriously, though, JUST because I've taught photography most of my life, do you want people to take their time to watch your work? Especially considering your "Artist" tag, my advice is to invest a little more of yours making them watchable. Otherwise, there's not much point in making them. Besides, once you get used to using a tripod, you soon start wondering how you worked without one. Above and beyond anything else, it makes you think about your shots, composition and storytelling a little more deliberately.

    Stepping down now, carry on.
    See, videos say millions of words
    ...even the "unprofessional" ones

    Sorry, I am not a better videographer
    ...too buisy makin' stuff, I guess

    Learning as I go
    ...so any & all pointers are helpful

    I just use the videos to help explain stuff
    ...like the "idler/jack shaft" concept described above

    I do try to be creative, check these out

    Here is a kart called Double Trouble
    https://www.youtube.com/watch?v=TRIKLdvGlTA

    This one is called !Arriba!
    https://www.youtube.com/watch?v=yn7LlvugyiA
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  9. #29
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    In case you aren't already aware of it, your rear-suspension mounted motor (as used on countless scooters) will have the same squat/anti-squat effects as a conventional (non-floating rear gear case) shaft drive. That can be ameliorated with proper selection of the swing arm pivot point but you may find that the spot that reduces jacking in the rear suspension may not work too well for bump absorption. But if your motor isn't very powerful you may not see a lot of jacking.

    Also, a 10T sprocket is a horrible choice for a chain drive, most chain manufacturers prefer a minimum size of 16 to 17 teeth. The overly-small sprockets can be a source of vibration from the chordal motion of the chain as it goes around the sprocket, and they greatly reduce the service life of the chain and sprockets.

    cheers,
    Michael
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  10. #30
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    With the motor "tucked up in the pocket", we have a lot more room to work with
    ...now, we can be more creative with component placement (to look kool)
    & we can spread the components out more, to help reduce heat build up

    Component placement

    We have to find a place for
    ...a breast plate
    ...a thumb throttle & bracket
    ...& also the speed controller & bracket

    Breast Plate:

    The breast plate is a piece of 1/8" x 3" steel
    ...with a couple of custom bends
    ...it mounts just inside the (2) front frame rails

    The breast plate is where
    ...the exhaust pipes will originate
    ...the main power cut-off switch will be mounted
    ...& where the solenoid will mount

    After cuttin' the ends of the exhaust pipes off
    ...I used a dremel to smooth the edges
    ...then coated the edges with liquid rubber (didn't want metal to metal squeakin')

    I bolted the stock exhaust flanges to the breast plate
    ...& coated the inside of both flanges with liquid rubber

    When I mounted it on the bike
    ...I tucked the pipe ends into the flanges & secured them with screws up thru the bottom


    Throttle:

    The thumb throttle mount is where
    ...the thumb throttle will be mounted & the bracket that holds the stock throttle cable

    The throttle bracket is a
    ...simple piece of 3/16" angle steel
    ...with a piece of 7/8" od. water pipe welded on

    It will be mounted under the tank also
    ...where the upper gas engine mount used to be bolted to the frame

    Speed Controller:

    The speed controller mount
    ...the speed controller (the brain) is the next biggest, most important piece after the motor & battery pack
    ...it gets hot so, ample kooling is best
    ...but, it's kinda delicate & all the main electrical connections go there so, it's gotta be protected too

    It looks like I can tuck the speed controller up under the gas tank (it will be protected & have lots of air flow)
    & it'll look kool too with the shinny lines of the controller & the kooler (heat sink)

    So, I used a piece of 3/16" steel to make a mounting bracket for it
    ...it bolts to the speed controller & heat sink on one end
    ...& on the other, it bolts to where the coil for the old gas engine bolted to the frame of the bike

    Here is another video with even more info

    https://www.youtube.com/watch?v=FYukp1LCrMQ&t=2s
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