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  1. T

    The Electric Next Iron Mongoose Build

    The saga continues... It turns out that one of the thumb throttle is kaput, so I had to order a replacement. It arrived a couple of days ago, so I wired everything together. As I mentioned on a previous post, the only spare battery pack I have left is a rather small lithium polymer unit. It...
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    Hall effect throttle problem?

    Just a final follow up to my quest: the throttle is the culprit. Going through the diagnostics suggested pointed to the throttle as the problem. So a quick and inexpensive replacement throttle did the job. Thanks again, everybody. Tho
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    The Electric Next Iron Mongoose Build

    I can't quite yet...it's still in progress, but will try to get something together when I'm done.
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    Hall effect throttle problem?

    Thanks Olderthandirt, that makes a lot of sense, and I'll try to do some more diagnostics. Oh, I'm sure I'll get it going again. The controller is being replaced because the original one died long time ago, and I'm using the left over bits on the new project...
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    Hall effect throttle problem?

    Possible, not not probable... That wouldn't cause a 3 volt drop if it's just a linear hall effect chip in there...right?
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    Hall effect throttle problem?

    Hi y'all. It started with putting in a new controller (36v, 800w, brushed controller). Everything is wired up properly, but the motor doesn't spin. the controller has only 3 wire to the throttle, and no indicator light so I can't diagnose very well. The controller is putting out 5 volts on...
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    The Electric Next Iron Mongoose Build

    The controllers are mounted onto the wooden platform. And the some wiring cleanup with zip ties.
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    mongoose cx450 Project

    Duffman, you may find my current project interesting: http://endless-sphere.com/forums/viewtopic.php?f=6&t=23467 It starts out with the same Mongoose that you have. Tho
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    The Electric Next Iron Mongoose Build

    I wired up the bike with just the front motor and rode it around for a while. Everything seems to work, handling is good. Even with just 600Watt, the bike shows some decent speed and stable handling. So back to the real construction. I decided to mount the controllers beneath the seat. Below...
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    The Electric Next Iron Mongoose Build

    The battery space should be big enough for a decent amount of LiFePo. My plan is to get 2 packs. The throttles were put in place tonight. The original intent was to wire them to the same throttle, but after reading the various threads here about dual motors, I decided to keep them completely...
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    The Electric Next Iron Mongoose Build

    The shorter rear shock came in today, it has black springs--perfect match. Added the motors today. Does anybody know where I can get those torque washers (the ones with the tabs) to keep the motor axles from spinning? The motors I have have only them on one side, and I'd be more comfortable...
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    The Electric Next Iron Mongoose Build

    It's going to be a full suspension dual hub motor bike. The bike is being put together from 3 bikes. 1. Fork from an Iron Horse something or another. 2. Rear triangle from a Next bicycle 3. Front (main) frame came from a Mongoose cx24v450 electric bike. It's a little tricky, replacing a 20"...
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    Wooden box II build

    Custom made panniers needed? I need to make it somewhat useful--or at least has the appearance of usefulness. Tho
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    Wooden box II build

    Working on the batteries. I have 80 sub C NiMH; combined they provide near 8 Ah of 48 Volt nominal. Shown is one of the two 48V pack. Each is made of 40 cells. To control the charging, I use a thermal switch. I borrowed that idea from one of the threads in this forum. My springer fork...
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    Wooden box II build

    Thanks for all the comments guys. But don't worry that I'd get myself killed. To keep things in perspective: you guys do know that I have modified and rode the exact same bike with the exact same power before, right? I rode it for a couple of years, and it was still fine before I tossed it...
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    Wooden box II build

    Sorry, I think I threw it out. I have a max amount of "stuff" I'm allowed to keep in the house, so I have to move them out quickly. I'm not even sure if it works. Yes, I can reinforce the frame. But I hate using my welders, I rather make sawdust :-P Tho
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    New 'Lightning Cruizer'

    I have had two of those and played with them extensively. See my current thread "wooden box II build" and one of my websites. http://thoxbui.com/electricbikes/slides/battery%20temp%20rig.html http://endless-sphere.com/forums/viewtopic.php?f=6&t=15486 The motor is brushed, non geared, 400...
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    Wooden box II build

    As I often said: you can't be rich enough, thin enough, or have enough clamps! I'll see your boilermaker, and raise him my PhD in metallurgy! But seriously, I didn't do any analysis AT ALL when I do these kind of things. What's the sport in that? It does look kinda skimpy, but I do have past...
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    Wooden box II build

    No, I pitched the original controllers. I do my best to match the controller to the voltage that I aim for, so I bought one from tncscooters store (20-30 bucks). It's a brushed motor, so it tolerates a lot of weird things. For a while, the "controller" was an on-off toggle switch. Great...
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    Wooden box II build

    Baltic birch veneer ply, coated with shellac: http://thoxbui.com/electricbikes/slides/IMG_1482.html Tho
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    Wooden box II build

    It seems to be ok at 48v continuous. This is my second lightning cruizer. My first one was rather crude (it was my entry to the ebike world about 5 years ago) But to Aussiejester's point, I do plan to have more batteries than these 40D's so I hope that I'll survive it.
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    Wooden box II build

    I hope it'll be fine. I rode for years on a bike with no seat tube and had no problem. I figure with the box resisting the compressive load from the top, I'd do fine. My main fear is that I had to drill one hole in the down tube for mounting Riv-nuts, and that may reduce its ability to resist...
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    Wooden box II build

    The quest for more battery space continues! Started with this, a "Cruizer Lightning" with a pretty anemic 24v of NiMH, brushed motor. Cut out seat tube, mount the seat against the frame, new handle bar Built the box out of wood I'll be using 48V8Ah of sub C NiMH (for now) with a 1000W...
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    Room for batteries... lots of room for batteries

    It's actually quite comfortable as is. I've ridden on it for more than an hour without any problem. The plastic is pretty flexible, much more so than a typical bike saddle; and the large surface spreads out the stress. Tho
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    Room for batteries... lots of room for batteries

    Wrapping up on my grocery getter project. Attached are two photos. There is plenty of room for grocery, but I would like to think that one day, It'll be filled with batteries and perhaps a solar panel for that special trip. Specs and Costs: trike: 100$ craigslist "trunk/seat" : 18$ walmart...
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