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  1. IdleMind

    Tubular 18650 solderless pack

    Until now I never knew that I could easily upload photos to ES. So thanks AW for letting me know that. I just edited the first post in this thread to add photos. I should get them all up by end of today.
  2. IdleMind

    Solderless 18650 pack - looking for feedback

    You asked about techniques for making bumps using woodwork tools. Lately, I have been putting solder bumps on the plus end of the cell and using flat copper. I use a table saw to trim the solder to get uniform overall cell lengths. I have not posted this before because some might consider it...
  3. IdleMind

    Another 18650 stack build

    bobc--feable minds think alike too :( I do like your idea of sealing it up and using gortex to let it breath out moisture
  4. IdleMind

    Another 18650 stack build

    A few suggestions that might help you. I have built several packs similar to what you are doing and after working out the problems they do work well. Take a look at this https://endless-sphere.com/forums/viewtopic.php?f=14&t=69738 If you have access to a table saw you can run a cut...
  5. IdleMind

    Different layouts for diy front suspension?

    If you have an itch to build your own suspension, then you ought to do it. I've done two and here are some thoughts. On my recumbent the front end is very light and the non-damped suspension works great. My cargo bike is an upright bike with 20 inch wheels and also no damping. This gives a...
  6. IdleMind

    4P10S Pack - w/o Welded Tabs

    Good idea and execution. Will you be adding a balance harness. I suppose you could do 6p by inserting an extra threaded rod. You could use 2-3/4 inch long 8/32 screws instead of cutting threaded rods to length. I'm going to keep watching to see how the whole pack turns out.
  7. IdleMind

    Building a compact cargo bike

    What's a cargo bike without a big ugly box. There are 4 nuts welded to the rack so this box can be added or removed in about 2 minutes. The plan is to build other cargo attachments, say a structure that can carry 2 grocery bags pannier style. But for now I am done, too many other things I...
  8. IdleMind

    Sine controller from Shanghai Leishun Industry Co., Ltd

    It was cold and windy today when I took the bike with 9fet controller for test ride. With my light pedaling it held 17/18 mph into the wind. It performs about the same as the 6fet except it accelerates a bit faster and top speed is 2 to 3 mph slower. It's quite, but the 6fet is silent, the...
  9. IdleMind

    Sine controller from Shanghai Leishun Industry Co., Ltd

    I brought my recumbent bike into my basement to work on swapping controllers. First off, the 9FET controller works with the BMSbattery LCD display and I will be keeping this controller on this bike. As for connectors, all the major ones plug together. I believe the PAS is the only connector...
  10. IdleMind

    Sine controller from Shanghai Leishun Industry Co., Ltd

    It has always been my intention to try this on my recumbent with the Q100, lcd display, and PAS. I will be able to check that out in the next day or two. This morning, I took the 9FET sine wave controller off my cargo bike and replaced it with a 6FET square wave controller I had not been...
  11. IdleMind

    Sine controller from Shanghai Leishun Industry Co., Ltd

    I bought that exact controller from that same vendor about 6 weeks ago, unfortunately I can't answer your questions because for now I am only using it with a throttle only. I am using this simple setup on a small cargo bike I just built and it works fine the way I am currently using it. My...
  12. IdleMind

    Building a compact cargo bike

    It's about as done as a homemade bike ever get's done. A new properly adjusted headset corrected the heavy steering. I gave it a really ugly flat black brushed paint job. I've ridden it over 80 miles with no problems, just a few rattles that need attention. So now I am starting on a big box...
  13. IdleMind

    Building a compact cargo bike

    Took it out yesterday for the first test ride and I liked it. The motor is a smaller Bafang (swxb?) which I bought a few years ago on ebay. With the 10s battery and 20" wheel it goes 18 mph on its own. The bike handles nicely at all speeds, but the steering is a little heavy at times, I might...
  14. IdleMind

    120W balance charger on sale for $30 shipped

    This was a timely tip for me. I use 2 packs in series on my recumbent bike. An 8s made of hobby king 4s bricks in series with a 2s made of 18650 cells. I charge the 8s pack with 8s rc charger and had been using a power supply for the 2s pack. I ordered this charger and just got it 2 days...
  15. IdleMind

    Tubular 18650 solderless pack

    If you give this a try, here are some things to think about. 1--be prepared to spend a lot of time because it's harder than it looks 2--if you do it right it can work really well 3--the springs I use are compressed to 8 to 10 pounds 4--the copper plates are .008 inch thick A group of...
  16. IdleMind

    Building a compact cargo bike

    It rained a few days ago and washed the road salt away and then warmed up a bit. So, I got my recumbent bike out and dismantled the bike I had been riding for the winter. I laced the rear 3 speed hub into a 20" rim and, put on the handle bars and seat. I don't have spokes yet for the front...
  17. IdleMind

    Building a compact cargo bike

    Thanks for the heads up. I haven't had a bike with fenders since I was a small child. When I get the wheels, I will take another look at the fender mounts and beef them up.
  18. IdleMind

    Building a compact cargo bike

    It's been slow going since I last posted. The battery box from my recumbent was about a 1/2 inch too wide to freely clear my heals so I made a thinner wood box which will eventually also fit the recumbent. Then I also made a smaller wood box for the controller. I didn't like the derailleur I...
  19. IdleMind

    Building a compact cargo bike

    I didn't think anyone would notice that and I agree. I was mostly concerned about the situation where you stand up on the pedals and apply a heavy force to the bottom bracket and I think that case is now addressed. I weigh 150 pounds so I am not a heavy load and I am way past my prime so not a...
  20. IdleMind

    Building a compact cargo bike

    When I started this thread I asked for suggestions and got some good ones and made some changes. But, there was one aspect of the change that I never liked. In the original design the rear rack also served as a primary structure from the seat down to the rear axle. After moving the battery...
  21. IdleMind

    Building a compact cargo bike

    I forgot to mention one more really important reason for making the fork the way I did. I like front wheel drive because it allows the use of any rear bike hub. I sized and built this fork to handle the forces encountered with a front motor. On my recumbent, I use a Sturmey Archer drum brake...
  22. IdleMind

    Building a compact cargo bike

    The recumbent bike in my avatar has has a similar front suspension and it works great. Because there is no sliding action the friction is very low which helps the suspension respond to bumps. I also wanted to use a spring that I had.I made those 2 red springs by cutting one long spring in half...
  23. IdleMind

    Building a compact cargo bike

    The battery pack in the photo is about 6.5 inch wide so it causes a small problem. If you notice in the photo, I removed a handle and the front latch from the battery box because the heal of my shoe can catch as I pedal. Removing that latch might be a good enough fix. I won't know until I can...
  24. IdleMind

    Building a compact cargo bike

    I managed to get part of an old derailleur mounted to serve as a chain tensioner. This will account for changes due to swing arm movements. I aligned it to minimize excess chain slack because I plan to use a 3 spd hub with coaster brake. As shown it only takes about 10 deg of back pedal to...
  25. IdleMind

    The Best Battery Bang For Your Buck!!!

    That is an excellent idea and execution. I will use those techniques sometime, don't when or why, but I won't forget.
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