Search results

Date Relevance Most replies

  1. ElliottE

    Is a bolt together frame a bad idea?

    Put me down firmly in the "bad idea" camp, and here's why: A "bolt together" design means that you have multiple bolts and bolt mounting points that can be points of critical failure. This in and of itself is not necessarily a bad thing, provided you engineer your design so that all anticipated...
  2. ElliottE

    My Kickstarter project

    Good question. Both the front and rear wheels are quick-release, this combined with the center-stand makes changing the rear tire reasonably easy. I've found the easiest method is to first undo the v-brake, then get the left-side chain off of the sprocket, then swing the derailleur around on the...
  3. ElliottE

    My Kickstarter project

    Hello everyone, I'm running a Kickstarter to raise funds so that I can continue the development of my left-side drive cruiser and bring it to market next year. This is what it looks like: Here's the link: http://kck.st/1s7NV9D I invite all of you to take a look, and please consider...
  4. ElliottE

    My scratch built left-side drive hill climbing cruiser

    Went on a nice 20-mile ride with Mark today, here's a pic of our e-bikes. Mark did an excellent job on his e-bike, the craftsmanship on it in person is really impressive.
  5. ElliottE

    My scratch built left-side drive hill climbing cruiser

    I've launched a Kickstarter campaign to raise funds for continued development of my e-bike design. Here's the URL: https://www.kickstarter.com/projects/2021742949/a-high-performance-hill-climbing-e-bike-from-surge I invite all of you to take a look, and consider contributing and/or letting...
  6. ElliottE

    My scratch built left-side drive hill climbing cruiser

    Here's a Hyperlapse video I did today on prototype #2. The ride covered 25.2 miles, including over 1000 feet of climb, with a combined weight of 240 pounds between the rider and the cargo in the saddlebags. This ride used 16.3 Ah of battery out of what appears to be roughly 19.3 Ah of capacity...
  7. ElliottE

    My scratch built left-side drive hill climbing cruiser

    I took this video today on my e-bike, climbing a very steep hill here in Spokane. http://youtu.be/Aniph7bn9CA
  8. ElliottE

    Manufacturers/Dealers to Gravitate Towards

    Thank you for the great advice, Doc. I've built two prototypes now, both using the Astroflight / Shumaker drivetrain, and they work extremely well. You can check out my latest prototype on the thread where people show off pictures of their e-bikes. I can heartily second your opinion and...
  9. ElliottE

    My scratch built left-side drive hill climbing cruiser

    Here's some pics from the building process. Frame jig, made from laser cut steel and a solid-core door Cutting miters on tubing Front triangle in jig Front triangle, with mill, welding rig, saw and tube bender in background Frame all welded together Inside the enclosure after assembly
  10. ElliottE

    My scratch built left-side drive hill climbing cruiser

    Back in Spring of 2012 I decided to design and build a comfortable cruiser that could pull me (at 238 lbs) up the steep hills of my hometown, Spokane. Furthermore, it had to have the range to get me all the way across town and back, while handling said hills. After multiple design revisions and...
  11. ElliottE

    Connecting a Cycle Analyst to a Castle Creations controller

    Just FYI to anyone interested, I now have my CA V3 updated and working with my controller and motor, just got the motor to light up and spin. Next step is to do a couple of more things on the e-bike, and then I can install the motor and take my first test ride. I'll post pictures when I do. Elliott
  12. ElliottE

    Connecting a Cycle Analyst to a Castle Creations controller

    Thank you teklektik for that information, it is greatly appreciated. Elliott
  13. ElliottE

    Connecting a Cycle Analyst to a Castle Creations controller

    Hello amberwolf, Thank you for those search links, I'm checking those out now. In the meantime, being as a picture is worth a thousand words and all that, here's some pics of what I'm working with: Cycle Analyst V3 Grin Tech shunt Castle Creations HV160 Another piece of the puzzle. This...
  14. ElliottE

    Connecting a Cycle Analyst to a Castle Creations controller

    I've been searching repeatedly, unfortunately I'm not finding any threads that address my particular question. If anyone would be kind enough to provide a link, it would be greatly appreciated, apparently my search-fu is weak.
  15. ElliottE

    Connecting a Cycle Analyst to a Castle Creations controller

    Hello everyone, I'm in the final stages of assembling my second e-bike prototype, and I'm currently trying to get everything all wired up. This design uses a Cycle Analyst V3 with a Grin Tech shunt, and I want to connect the shunt to a Castle Creations HV160 controller. The Grin Tech shunt has...
  16. ElliottE

    Using supercaps to support/replace battery pack

    Castle Creations offers a cap pack to help smooth out current ripple: http://www.castlecreations.com/products/cc-cap-pack.html
  17. ElliottE

    LiFePO4 batteries in the 12 volt "gel cell" format

    Dogman wrote "The dream was that 12v 20 ah of 5c cells was 99 bucks at walmart." Not there quite yet, but note the price and specifications of this battery: http://www.batteryspace.com/LiFePO4-Prismatic-Battery-12.8V-20Ah-256Wh-10C-rate-with-LED-Balancing.aspx It's a 12.8V, 20Ah that can...
  18. ElliottE

    LiFePO4 batteries in the 12 volt "gel cell" format

    I've been doing a lot of research on battery technology for my e-bike project (36V 10+Ah, left-side drive, crank-forward commuter,) as of now I'm pretty much decided on the LiFePO4 chemistry, and have been looking into my options in this area. The batteries packaged in the "12 volt gel cell"...
  19. ElliottE

    E.S. bottom bracket drive.

    Fabio, here's the names of the main components used to construct a basic bicycle frame, from front to back: Head Tube (The tube that holds the front fork assembly.) Top Tube (The tube on top, between the head tube and the seat tube.) Down Tube (The tube below the Top Tube, between the head tube...
  20. ElliottE

    A left-side drive cruiser based on the Recumpence drive

    I hadn't considered that. What title might you suggest? Left-Side drive cruiser? Ok, done!
  21. ElliottE

    A left-side drive cruiser based on the Recumpence drive

    Hello Neptronix, The seat angle is due to the bottom bracket being set so far forward, and the head tube (fork) angle is due to the relatively short length of the top tube (compared to the length of the wheelbase.) This design, as it sits, is able to use "stock" tube sets such as those from...
  22. ElliottE

    A left-side drive cruiser based on the Recumpence drive

    Understood. However, this also happens to be a criterion that makes the nice people at the company I intend to purchase product liability insurance through happy, which also has a certain impact on my decision-making process...
  23. ElliottE

    A left-side drive cruiser based on the Recumpence drive

    Here in Spokane we have quite a few very steep hills. I'm thinking if I can accomplish being able to take on a 15% grade without bogging, that should hopefully accomplish my objectives. The thing is, the motor I've got in this puppy can make a whole lot more than 750 watts, so part of this...
  24. ElliottE

    A left-side drive cruiser based on the Recumpence drive

    I've been working on a mid-drive e-bike project for a while now, and have managed to get to where I am ready to actually begin cutting, shaping and welding metal. I have, among other things, attended the UBI framebuilding class (the one I attended was taught by Paul Sadoff of Rock Lobster,)...
  25. ElliottE

    Construction of Electric Chopper

    It's looking like your project is getting close to the finish line. I'm looking forward to seeing video of the first ride.
Back
Top