3 Speed Internal Hub Autoshift

Discussion in 'Transmission / Drivetrain' started by LR Jerry, May 13, 2013.

  1. LR Jerry

    LR Jerry Well-Known Member





    If you want to have multiple gears with a shiftkit but stay legal this could be the set up for you. Mr. Kilduff will also sell the shifter by itself as well. He said you can adjust what speed you want the gears to change at. There is a beauty cover for it as well. This is his number 818-789-9293
    Last edited: May 13, 2013
    BigBlue likes this.

  2. crassius

    crassius Well-Known Member

    none of those links are proper
  3. BigBlue

    BigBlue Active Member

    The one posted now worked for me. That's pretty slick. How much does he want for the shifter?

    Thanks for sharing,

    AKA: BigBlue
  4. LR Jerry

    LR Jerry Well-Known Member

    Got it right now. I was told $80 for just the shifter.
  5. BigBlue

    BigBlue Active Member

  6. LR Jerry

    LR Jerry Well-Known Member

    Got it right now. I was told $80 for just the shifter.
  7. BigBlue

    BigBlue Active Member

    I like his idea - simple. However, how about using a vacuum actuator rod with a vacuum port on the HT/China Girl intake as your source of vacuum.

    AKA: BigBlue
  8. professor

    professor Active Member

    Another brilliant guy in our midst.
    Looks like he is using an automatic transmission governor to do the twirling and pulling.
    His brake idea is great- using the pull on the coaster brake lever (that is free but limited) to pull the V brake.
    Only issue I see is the rear rim must be kept true for the little wheel to ride on constantly.
    Really, I am impressed.
  9. LR Jerry

    LR Jerry Well-Known Member

    In the near future I'd like to build another autoshift bike. My 5 speed LandRider works great. For my next build I want to use this system on a cruiser bike.
  10. bigoilbob

    bigoilbob Member

    LR, or anyone. Do we have any history with shifting these IGH's under constant electric or gas engine power? Even with an autoshift our pedaling cadence provides natural low torque periods for shifting.
  11. LR Jerry

    LR Jerry Well-Known Member

    Last edited: May 16, 2013
    5-7HEAVEN likes this.
  12. bigoilbob

    bigoilbob Member

    Hello LR;

    Certainly agree with you on your current setup. Anyone watching your U tube can see how well that works. But it seems to me that a derailleur/chain tensioner system provides for natural, smooth, shift changes. As long as you can drag your chain back and forth their wouldn't be any big shocks. Just the small snap of the leading chain link (the last free link in tension) moving to the new sprocket. I don't see how an IGH could shift so smoothly under constant, hard chain pull. But this might just be my ignorance of detailed IGH operation.
  13. LR Jerry

    LR Jerry Well-Known Member

    Before I made any videos, I'd say that I've been riding my bike for over two years in post and treads. Almost always someone would post my set up wouldn't work shifting under load and I was going to have problems. Obviously they missed the part where I said I've been riding the bike for over two years.

    I know of several people who've used internal hubs. But using a motorized autoshift IGH system would be something totally new. With new things its a gamble if it works. Most places state you must have an automatic transmission. This means no manual clutching or manual gear shifting. With these autoshift systems you'll have multiple gears but still be legal.
    Last edited: May 16, 2013
  14. 5-7HEAVEN

    5-7HEAVEN Active Member

    Nice video, Jerry. Great setup! Just one thing. You need more protection! A fall @ 28mph will result in major road rash to your bare arms and a collapsed bike helmet. A fall going downhill @ 45mph would be horrific. Just saying for your own protection. I ride 6 miles to work, using motorcycle helmet, dirtbike chest protector, knee/shin guards, elbow/forearm guards, dirt bike gloves and Red Wing work boots. Top speed on the ride is 33mph, but usually riding @ 20mph. Be safe, Jerry. Nice bike with cool autoshifter!