Back to the handlebar bag, I did a bit of velcro strapping using a pair of pant leg straps and a large doublesided velcro strap that I used to use for a pantleg strap before I found those, and got a decent solution to securing the bag to the bars without any kind of brackets or anything. I would still want a fastened-on metal bracket to secure it all, especially with any load in there (like batteries), but it will work like this if it has to.
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Then, with the bag secured, I started stuffing it with RC LiPo packs. It's a mix of 5 and 6s packs, some under repair, etc., but I can get 6 of them in there easy,
plus one more on the top (two, actually, but not with the bubble wrap around this one).
There's still room in the top compartment too, for maybe a 6s pack.
The front pouch, still empty, is at least big eonough for two more packs.
Two 2s packs that might be used for lighting, or might simply be more in series, easily fit into two little pockets in the front pouch.
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I could probably put two 5s or *maybe* 6s packs in there instead, but if I use only 2s, I can fit a 6FET or 9FET controller in there easy. (though this 9FET still needs to be fixed)
Or I can stick up to a 12FET in the top compartment, instead. (and this 12FET doesn't yet work either)
I'd probably have to leave the compartment unzipped while in use, so at least a little air can flow thru, but I don't expect this bike would be using a ton of power to move, with the little TongXin motor, especially since it's thru the chain drive.
With all that stuff in there, it is about 14-15lbs. So unless I needed the range, I would probably not put it all in there.
Even with all that weight, and just the strap for support, it stil clears the tire by an inch or more. If i had the fender on there (it's on CrazyBike2 right now) it would probably be resting on the fender top.
On the frame bag, which will more likely be used for cargo (like tools, a work uniform, or similar) rather than batteries, I cut the carry strap. I left a short piece that I can later use to attach a buckle or velcro to, that will then connect to another piece of strap I'll sew into the bag.
I can use a velcro strap or more likely pair of them to secure to the bottom bracket area, for the bottom corner of the bag, and keep it from wiggling into the cranks or chainrings.
I'll need to sew in a strap at the other corner for the top rear, and likely at least one or two more across the top middle. Then if I decide to put batteries in there, I would probably make a plate for the bottom of it that screws to the bottle mounts, so there would be something to strap them down to. (rather like I did with The Velcro Eclipse's battery bag).
Overall the bags would look about like this:
But if I did decide to pack all the bags with RC LiPo packs, I could easily put at least 12 6s 5Ah packs in there. I think 14 or even 16 packs would fit if packed in tight. Those would mostly be paralleled, because I would really want only 12s at most to run that little motor, and even then I would probably not be using full throttle pretty much ever. Maybe 2/3 or less, since this was (I think) originally from a 24V system, and I don't really need it to go very fast. And I don't want it to drive the cranks faster than about 90RPM or so, 100 max.
Depends on how I can gear the motor to the cranks. If I get more reduction, I can run the motor really fast and have less torque load on it at startups and such, even if I end up in a higher gear than I meant to be.
But anyway, if I do it as 12s, with 6s packs, and I wanted a super-long-range system, I'd parallel 6 or 7 or 8 of them in the front bag, and then do the same with the ones in the frame bag. Then I would series those two bags, to run to the controller. That means only two wires out of each bag (or rather, out of the one without the controller). The one with the controller would have one power wire to the other bag, and the throttle wires and ebrake wires, and the motor wires (hopefully just phase as I would like to run this thing sensorless to save some wiring and potential trouble later on).
I got the kickstand off to play around with motor bracket ideas, but I'm still not sure exactly what the bracket will look like. Still working on finding that "just right" piece of metal to make the bracket from, now that I have the welder to do it up with. Figuring out how to do it so it will easily and securely clamp to the chainstays and not shift is the tougher part. But I think I know what I want to do for that--I have to sketch it up, though.