Recent content by vk3ckc

  1. vk3ckc

    What about a "Jokes" thread? - I will start.

    Thank God, I was born in 1948, and I don't have any of those symptoms. But wait, am I displaying signs of the D-Nile virus? Maybe you get that first?
  2. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    Sorry, not much activity lately. Have been nursing a very bad back problem for three weeks now and not liking the forced construction stop. I am in the middle of the new mid-drive and rear axle drives. Parts have been done but I can't finish at the moment. In addition, we started our second...
  3. vk3ckc

    Any Rail Bike Builders?

    I can assure you that it is 1969 and, if you look real closely at the shed in the centre you will see the rear end of a 1969 Datsun 1000, 4-door. It;s a scan of a Polaroid (remember them?) photograph that apparently proved appetising to some silverfish or similar. I'm sorry to say that it was...
  4. vk3ckc

    Any Rail Bike Builders?

    Should be an interesting build. The trike in my picture had an outrigger with a diagonal brace to the opposite rail. The outrigger wheel was smaller. I seem to recall that the main rear wheel had a small bevel lip on the outside to prevent it slipping off the inside of the rail. Happened to me...
  5. vk3ckc

    Any Rail Bike Builders?

    Sorry, no spare, unused, rail lines around here. I live 1km from a closed one but it was converted into a rail trail. However, I did spend three years (1966 to 1969} of a 25 year railway career riding up and down a track on a three-wheel track inspection motor. It had a single cylinder 2-stroke...
  6. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    Could I make a better mid-drive from a bottom bracket? The basic requirement, assuming that there will be some sort of freewheel on the rear axles, is to accept drive from the front chain and drive output with a drive gear for each of the rear axles, as well as a conventional multi-gear cassette...
  7. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    The specific construction of the mid-drive was for proof of concept for what I had in mind. Yes, it seems to have worked but I now have a small concern related to accessing the cones that are now “buried” deep inside both ends of the mid-drive, unlike with a standard rear hub where one end is...
  8. vk3ckc

    Calculator for trail and wheel flop ?

    Flop usually means a process where something naturally falls or slumps to a position. Some front wheels seem to want to assume a certain angle when the bike is parked and sitting on a stand. Would that be it? In days of old, long ago when the world was flat, you could ride a bike no hands. It...
  9. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    The left side freehub was first fitted with the same size sprocket as the first one on the right side – for driving the left rear axle. The rest of the freehub was filled with spacers as none of the other sprockets were required. The two hub halves were then placed end to end and then compared...
  10. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    I have a shed that is difficult to get into, with bikes hanging from the ceiling, the walls, and other things standing on the earth floor. I didn't want to bend down and lift things with my back problem. Removing some rear wheels from the hanging bikes was an easy job and put them in a more...
  11. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    I retrieved a heap of rear wheels from the shed and managed to find two identical hubs and cassettes. Obviously they are used and probably should be replaced but the purpose here is to prove a workable process for separately driving delta rear wheels from a mid-drive with something of a cheap...
  12. vk3ckc

    Where can I buy components for a center joystick steering system?

    They seem to be connected via a universal joint. My view has always been that there are, basically, three modes of operating such a steering column: Move it up and down to move it out of the way for getting into the seat - especially with handlebars on it. Move it to the side for minimal input...
  13. vk3ckc

    Does anyone remember a CAD drawing done of a single sprocket driving 2 free wheels ? old forum ?

    That sprocket only provided a single speed drive. The multi-gear cassette was required to be mounted elsewhere.
  14. vk3ckc

    Oh no ... not again ... Street Fox fail

    Is there any castor on those front wheels? Hard to tell but there doesn't seem to be. Would that be the cause of your shimmy? I'm not familiar with the Street Fox design so please excuse my ignorance.
  15. vk3ckc

    VK3CKC's eLecTricks Trike Design and Build.

    I hadn't thought of a castellated nut at this stage. It should be quite easy to replace a standard nut with a castellated nut and a split pin through a hole drilled in the axle. I might just do that if the wheel falls off - if I get home to do it. Thanks for the suggestion.
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