My new Stealth-e-bike

Discussion in 'Photos & Bicycle Builds' started by Simon_A, Jul 25, 2008.

  1. Simon_A

    Simon_A Member

    Heya all, I have been toying with the thought of a e-bike for a while, so I decided to pull my finger out and build one.

    I didnt want it as noticable as my HT. More a bike no one would give a second look at, and I think I have that.

    It just runs a legal 200W hub motor, I can get 25-30km/hr out of it so it isnt a speed monster like my HT. But its stealthy and silent, and a good start I think into electrics. I have already decided to upgrade it to a 900W 36v system that runs through the bike gears that will give me the speed I want. But as I said its a good start :)

    The most interest in the bike is the lighting system. I followed the idea's here. Quartz Halogen Bike Light.shtml

    And it works brilliantly. I used a red LED downlight at the rear and a 20W 36° Halogen at the front. The light output is phenominal compared to the usual bike lights.

    I have a 50W 10° spotlight as well I just havent fitted it yet.

    Anyway heres a few pictures, let me know what you think :D

    Attached Files:

    Last edited by a moderator: Dec 18, 2015

  2. ozzyu812

    ozzyu812 Member

    Nice to see another e-bike!
    Who's the manufacturer of your 900W 36v system?
    I have an e-zip and have been drooling over the Cyclone 1000w 48v system.
  3. ChinaPhil

    ChinaPhil New Member

    I agree, it's good to see another e-bike.
    Stealth will be more difficult with 900W / 1,000W motors.
    What type of battery will you use and from which manufacturer?
  4. Simon_A

    Simon_A Member

    No idea who the manufacturer is. They are on eBay, the one I am thinking of is rated at 650W at 24v and 900W at 36V.

    They have the 48V 1000W units too, will have to find out more as to which I will buy.

    As far as batteries, Im just use SLA's. Cant afford Lipoly's ATM.
  5. starkm32

    starkm32 Member

    Nice built!

    How much do the batteries weigh, and what it the range on a full charge?

    What is the max grade uphill?
  6. Simon_A

    Simon_A Member

    Batteries come in at about 16Kgs. No idea about hills, its pretty flat where I live.

    Range I havent worked out yet, never tested it on a full charge, got about 10Kms on the last run but the batteries were already run down a bit.

    Oh I fitted the 50W spottie as well. Seeing where Im going is no longer a issue. Have a look for yourself :)

    Attached Files:

  7. starkm32

    starkm32 Member

    Thats one sick bike!

    What did you drop on the hub motor/accessories? Info on purchase?

    Also that sleek black bike. Disc brakes on both front/back? Kinda hard to make out the make, please.

    An SR-71 of the bike world. :grin:
  8. Simon_A

    Simon_A Member

    Everything excluding batteries is a 200W grubee kit, bought here in oZ for 350.

    Batteries I already had, think they were about 40 each.

    Bike is a dunlop bike bought secondhand, I got it as I wanted disk brakes.

    It was originally grey but I painted it black as I had some black POR15 paint in the shed :D
  9. starkm32

    starkm32 Member

    You Ozzies have one nice Blackbird!:grin:
  10. will_start

    will_start Member


    That fully inspires me to try do that myself.
    but I have enough trouble with the bikes I already have.

    I like the price you're paying compared to getting a new bike tho.

    well done.
  11. Simon_A

    Simon_A Member

    Its the thing I like about it, infinitely reliable (will be my daily ride to work), and totally stock looking.

    Nothing that screams "steal me", no stickers to say its an expensive frame, no engine to see, just a bag on the back and a bare bike.

    And to buy a eBike pre made is about a grand, bugger that for a joke.
  12. starkm32

    starkm32 Member

  13. Simon_A

    Simon_A Member

    wow, mine isnt one of those affected but thanks heaps for that.
  14. starkm32

    starkm32 Member

    Always a good thing to look out each other here.:smile:
  15. mac66

    mac66 New Member

    Great idea, well executed.

    My wife and I camp in our RV all over the country and have been talking about getting or making electric bikes as a way to excursions from the campground. We've tried a motorcycle (too noisy and too heavy to haul around) moped (not allowed in some campgrounds, only holds one person and she won't ride it) and bikes, too tiring for longer trips. A stealthy electric would be just the ticket.
  16. SirJakesus

    SirJakesus Guest

    Just keep an eye on your suspension fork. I doubt you'll have a problem running a 200w motor but I've heard they don't like being pulled on and flexed at the same time because it will eventually cause them to fail. Just keep it in mind if you're going to increase power do it through your rear wheel. It is very stealth. Nice job!
  17. Simon_A

    Simon_A Member

    Thanks Jakes.

    The higher powered models Im looking at run through the rear wheel and use the rear deraileur for gearing (supposidly to a top speed of 44mph+).

    I agree that the front forks were never designed for lateral movement. Would be downright dangerous with a high powered front hub, even my 200W spins the wheel on loose/wet surfaces due to the flat torque curve of an electric motor.