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  1. LightningRods

    GNG 450 brushless Mid Drive - Primary Drive Modifications

    The order for the first beta production run of adjustable sheets is at the CNC shop. I stuck my neck out and ordered 10 sets for the Forum to get a better price. Thanks to your support I sold all of those and had to order more. In addition to the sharing of valuable knowledge and experience this...
  2. LightningRods

    GNG, 1000W 48V BB-drive, $400

    The order for the first beta production run of adjustable sheets is at the CNC shop. I stuck my neck out and ordered 10 sets for the Forum to get a better price. Thanks to your support I sold all of those and had to order more. In addition to the sharing of valuable knowledge and experience this...
  3. LightningRods

    GNG 450 brushless Mid Drive - Primary Drive Modifications

    Personally, I hope the stock setup works fine once the tension is correct. For sure that is the biggest problem. If I have to go to different sprockets I think I'll go wider if not larger diameter on the 14T drive sprocket. At about 6:1 every tooth on the drive requires 6 on the driven just to...
  4. LightningRods

    GNG 450 brushless Mid Drive - Primary Drive Modifications

    I'm going to start out trying to keep the belt drive. I'll admit in advance that I may not be able to. The stock pulley is too small in diameter and possibly too narrow at 15mm. I think it may work fine at 1 kW which is where I'm going to start out. There is another issue with the stock drive...
  5. LightningRods

    GNG, 1000W 48V BB-drive, $400

  6. LightningRods

    GNG, 1000W 48V BB-drive, $400

    ?????? What caused that? Some kind of impact damage? I don't see how torque on the jackshaft would do that. I hate the stock crankset as well. Still looking for quality options....
  7. LightningRods

    GNG 450 brushless Mid Drive - Primary Drive Modifications

    I've been heading off in a somewhat different direction than the rest of the group. Having seen Matt Schumacher's gorgeous CNC drives running 6kW AstroFlight motors through belt drives, I want to try to hold on to the quiet, clean and supposedly low maintenance carbon belt drive. I read through...
  8. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Thanks! I'm very pleased with how they've turned out. I had no idea what this local shop would be like. Turns out that they have two $300,000 production lasers and do great work. I'm going to design an aluminum battery box next and have them cut and bend it for me. 9 out of the initial run of...
  9. LightningRods

    GNG, 1000W 48V BB-drive, $400

    They are 3/4" (19mm) longer than original. I scanned the original GNG sheets and extended the sheets at 90 degrees to move the jackshaft mount. The slide adjustment ranges from stock position to 3/4" out.
  10. LightningRods

    GNG, 1000W 48V BB-drive, $400

    I'm so sorry Crossbreak. I love the German people. You deserve better than this.
  11. LightningRods

    GNG, 1000W 48V BB-drive, $400

    There's plenty of surface area to hold, as you suggest. The only issue I saw is that you need to get everything properly aligned before you crank the jackshaft bolts down. It is more possible for the internal plates to twist than I thought it would be. You want to get them level before...
  12. LightningRods

    GNG, 1000W 48V BB-drive, $400

    I only had one prototype set made for today, in case I got a measurement off slightly. Everything seems perfect. On Monday I'll tell the shop to make the rest of the run. There are currently 4 sets available in the original run of 10 sets that I have already paid for. Between now and Monday as...
  13. LightningRods

    GNG, 1000W 48V BB-drive, $400

    That was my purpose. The stock belt and pulleys are properly tensioned at the middle of the adjustment range. With 3/4" longer sheets you can now mount a 1 1/2" larger pulley or sprocket in the original space.
  14. LightningRods

    GNG, 1000W 48V BB-drive, $400

    :D :D :D :D :D :D :D :D Well I am VERY pleased with how the prototype for the adjustable jackshaft sheets turned out! All of my dimensions were spot on and the quality of my local metal fabrication shop is great. The laser cuts are very smooth and have the finish of a vinyl LP. There are...
  15. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Of COURSE I got the throttle with the contoured grip. :( Speaking for myself I'd like a separate thread on your mods with a build link in your signature. Thanks!
  16. LightningRods

    GNG, 1000W 48V BB-drive, $400

    I am starting to be amused by your claims of being "electronically incompetent". I would say that's only possibly true relative to your physical fabricating skills. :lol: When you feel like you have your whole hot rod battery/controller/throttle setup pretty well sorted please post the entire...
  17. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Mister Tao is the best price I've heard of ($156) but it took a month even with $137 express shipping. Also your goods get shipped twice, first from the TaoBao seller and then from Mr. Tao. Here is the list of damage to my kit as received: Primary belt guard bent. Support stud for belt...
  18. LightningRods

    GNG, 1000W 48V BB-drive, $400

    I'm in the process of modifying and assembling my GNG. Here is the bottom bracket assembly:
  19. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Cedric Lynch made a faired recumbent (velomobile) that made 60 mph and did it very efficiently. The big problem with selling electric velomobiles commercially is that they are just too damn fast. They'd have to be reclassified as some other type of vehicle. I know this is off topic for this...
  20. LightningRods

    GNG, 1000W 48V BB-drive, $400

    All you would need is a fairing and the right gearing on a Matt Schumacher recumbent and you'd be doing well over 100 mph. :shock:
  21. LightningRods

    GNG, 1000W 48V BB-drive, $400

    So it sounds like the freewheel assembly on the GNG is the good part of the crank. I was reacting mostly to the thin and cheap looking chainwheels that have an oddball attachment pattern. To add insult to injury my small driven chainwheel was bashed about 1/4" out of true in transit. I've had...
  22. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Sun Bicycles - Independent Pedaling System Crankset It occurred to me that the tandem bicycle world might have a freewheel crankset with better quality and more choice of chainwheels. They do. You can fit up to a 60 tooth wheel onto this crankset. There is a wide selection of other sizes for...
  23. LightningRods

    GNG, 1000W 48V BB-drive, $400

    All four sets are spoken for. I can still add more sets to the initial run if someone is interested. If you miss the first run more can be made later.
  24. LightningRods

    GNG, 1000W 48V BB-drive, $400

    Okay Windtalker, one of the first four sets are yours. I will assemble my kit and take detailed photos before shipping. The final cost is also not known until I hear from the shop. You'll get a good look at the fit and finish and know the exact cost in advance. I'm hoping that this mod will...
  25. LightningRods

    GNG, 1000W 48V BB-drive, $400

    I bought two of these 100 ohm potentiometers online last night for $3.95 ea. http://www.parts-express.com/term/100-ohm-linear-taper-wire-wound-potentiometer?srch=100+Ohm+Linear+Taper+Wire-Wound+Potentiometer Hopefully that will be the hot setup for killing the dead spots in the throttle...
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