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Thread: Ideal Elmoto donors

              
   
   
  1. #1
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    Ideal Elmoto donors

    Hello all

    Just thought it would be productive for everyone to have a chat about what we think is an ideal donor bike frame for a project.

    Obviously it is driven by a number of factors: use, range, performance, budget. So I propose the following categories, with my initial suggestions and we can add/remove as we agree so.

    Performance:

    - BMW K1200 gen 2 +
    Low wide twin spar frame with lots of space. Shaft drive. Hi performance chassis components.
    - Typical sports and super sports models, R6, R1, GSXR, ZX etc.
    - light 250cc class with unstressed engine! May require upgraded rolling parts off larger models.

    Economy / short range / low speed:

    - Light chassis, 250cc class or scooter
    - Kawasaki Ninja 250 ex/R

    Touring / long range

    (it is worth noting that speed is the enemy of range so there is a balance to be met in the type of riding to be used if range is required)

    - BMW K1200 gen 2 +
    Low wide twin spar frame with lots of space. Shaft drive. Hi performance chassis components.
    - Yamaha GTS1000 (rare and expensive...)

    Budget:

    Tends to limit range and performance so lean towards economy, short range, low speed. But things are changing and there are more opportunities. Perhaps this should be about component donors or sources.

    - Small EV cars
    - LEAF cells / similar modular batteries, like Chevy Volt, Ampera etc
    - Recycling EV motorcycles

    Please discuss suggestions and logic below. This is probably a mammoth challenge and subject to individuals opinions however if we agree the reasoning we can have a good guide as a starting point for planning projects.

    Tyler

    Edit- 24/7/15 @19:37 GMT
    Last edited by tylerwatts; 25 July 2015 at 1137.

  2. #2
    Senior Member DRZ400's Avatar
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    Ninja EX250 and 250R, Light, smaller tires, cheap, decent suspension & brakes in production ~20 years so lots of parts on craigslist, ebay both oem and aftermarket. Open engine area lots of options for custom battery mounting.
    2003 Ninja 250EX, Agni #95R, 6:1 Gearing, 11 Leaf Modules.
    Alltrax SPM72400, 400 amp Controller, all LED lighting
    2014 CRF450X Supermoto
    http://www.evalbum.com/1955
    http://www.evalbum.com/3337

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    Senior Member Stevo's Avatar
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    Whatever you have in the shed thats not running anymore!
    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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  6. #4
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    Quote Originally Posted by DRZ400 View Post
    Ninja EX250 and 250R, Light, smaller tires, cheap, decent suspension & brakes in production ~20 years so lots of parts on craigslist, ebay both oem and aftermarket. Open engine area lots of options for custom battery mounting.
    I second this. Parts availability for this bike is unreal, but it should be mentioned that the Ninja 250 might need it's frame braced due to using the engine as a stressed member. But the suspension, brakes, tires, and weight are all ideal for our purposes.

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    Senior Member DRZ400's Avatar
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    Yes....and bracing the ex250 frame is such a no brainer....solutions are bolt in brace, welded brace and/or heavy duty battery frame. All have been done with complete success.
    2003 Ninja 250EX, Agni #95R, 6:1 Gearing, 11 Leaf Modules.
    Alltrax SPM72400, 400 amp Controller, all LED lighting
    2014 CRF450X Supermoto
    http://www.evalbum.com/1955
    http://www.evalbum.com/3337

  8. #6
    Senior Member Athlon's Avatar
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    Ducati have steel frame , it uses less space than aluminium so there is a lot of room for battery, also motor is stressed so when you remove the motor you can use the battery box as structural element

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    Have someone converted BMW K1200? Would be interesting to see how shaft drive is working with electric motor.

  10. #8
    Senior Member Athlon's Avatar
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    not a BMW but have shaft drive and electric motor http://elmoto.net/tell-us-about-your...-eldorado.html

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    Athlon
    The ideal is not to need to make the battery box structural as this adds weight or cost.

    zerous
    The BMW has a 2.78: 1 ratio and therefore not enough. I intend to use a 3:1 belt drive from the motor to the drive shaft to have about 8:1 total. And this suits Harley type primary drives perfectly. Also I would want to use the Enstroj Emrax 208 low voltage motor with liquid cooling. This motor is tiny and I would mount it below the swingarm with the belt drive in front and maximum space for batteries and maximum airflow to the motor.

    I'd love to build this bike right now but need to finish the EV Porsche first. So hoping we can all use this thread to down select the ideal donor for each common project type.

    Tyler

  12. #10
    Senior Member DRZ400's Avatar
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    Quote Originally Posted by tylerwatts View Post
    Athlon
    The ideal is not to need to make the battery box structural as this adds weight or cost.
    Not at all, a non stressed engine frame has the extra weight in the cradle. Done correctly you add 6-8 lbs maximum and maybe $25. Hardly worth mentioning.
    2003 Ninja 250EX, Agni #95R, 6:1 Gearing, 11 Leaf Modules.
    Alltrax SPM72400, 400 amp Controller, all LED lighting
    2014 CRF450X Supermoto
    http://www.evalbum.com/1955
    http://www.evalbum.com/3337

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