![]() ![]() There could be several types of plans, but I think that what I'm proposing could be a one-size-fits-most plan for typical commuters and leisure riders. I'll pay for any domain names and hosting, if necessary. I would love to find a solution here, and I think that it might be great to get everyone's input, and post a free plan somewhere. But I'm thinking there's gotta be a way to lay-out some package of LiFePO4 batteries in a way that gives me 30-36 Volts and 18-25 Ampere hours per pack. For example, they could be cut and "bulged" or "stretched" a bit somehow on the outside. I don't mind modifying those cases a bit to fit-in what needs to be fit in. Iv.) Those cases look nice - they fit the bike visually. Iii.) Those cases are tough plastic and protect their contents well. Ii.) Those cases lock in place with the key (that's enough of a deterrent for me - my bike is never out of sight, so it stops a grab-and-run thief. I.) Those cases slide in securely and plug right in. Flat terrain is often best covered quickly, with pauses at the scenic spots.Į.) If at all possible, I want to pack my batteries into the existing SLA cases, because: I want to go faster to cover more ground. Wind resistance increases almost logarithmically with speed (as modified by the drag coefficient, which is admittedly high), so I'll lose a bit there, but then, I don't mind. I know that this means a faster draw of Amperage, but then, I'll be covering more ground also. ![]() I also want the longevity (number of useful cycles) that Lithium Iron Phosphate offers.ĭ.) I want to go to a higher voltage, say 30-36V, to get more speed. That will give me as much distance as I would likely ever wish to go.Ĭ.) I want to be able to recharge quickly, say, during a leisurely lunch, which I think means I need LiFePO4 batteries. If I had a pair of 20 Ah packs, that seems like plenty to me, especially since I'll have faster re-charge. It's fairly flat here in the Orlando area, and I already get 12-15 miles per standard 10A SLA pack. So the weight savings means nothing to me.ī.) Total Distance on a Charge needs to increase from this, but is not terribly relevant to me, since I will be using DUAL-PACKS - one on each side of the rack. saved is less than 2 percent of what the motor has to push already, when you consider rider at 280, bike at 80, cargo at up to 30, and a pair of batteries at 20-30. Because I already weigh a fair amount, I don't worry too much about weight savings - even 10 lbs. Given the following factors, what would you recommend for me:Ī.) Weight savings is irrelevant to me. How was the performance increase? Did it seem to overly strain the sprockets and chain connecting the motor to the hub? (I weight a lot. Can you help me out by verifying that the 450W motor on the eZip Trailz bicycle will handle 36V? I assume you ran those 36V packs on an RMB bike with that same SLA pack, and they all have that same 450W motor. I can see there various comparative advantages and disadvantages - including that the D-Cell options require more soldering and connecting.ġ. I know options 1/3 won't be "cheap", but, considering the money I waste on stupid things, I can easily justify this expenditure, just on bragging rights alone when I show it off.Īll very interesting options. I would only need ball-park price guesses. With you doing a schematic, parts list, and instructions of how I could do that same conversion here. With the same kind of 24V Li conversion done there, and I arrange pickup.Ĥ. With you doing a schematic, parts list, and instructions of how I could do aLiFePO4 conversion here.ģ. With 36V LiFePO4 conversion done there, and I arrange pickup.Ģ. I have two brand-new SLA packs, but I found a cheap, used Trailz model I'm buying, and they'll work on that as an extra bike for a guest.ġ. Would I even need to make changes to the controller(s)? I'm thinking perhaps not.Ĭan you do the work for me? I would assume you have access to battery cases with used-up SLA batteries inside, which you could remove. ![]() Each pack would have in it LiFePO4 36V batteries, and plug right in. So, if possible, I'd want to use a two packs, thus filling both vertical "slots" on my rack. I'd like the extra speed without changing gearing. ![]() I'm thinking that the 450W motor on this bike (same motor as on the Trailz bikes) could handle 36V. The pair of 8Ah 24V LiCo would work on my 2008 iZip Urban RMB bike, but I'd really prefer to move up to 36V. If not, would you be willing to put together a parts list and schematic, combined with all photos, and sell it to me as a set of instructions? (Naturally, I'd pay for this.) If I can find a way to arrange legal transport (trucking? perhaps someone driving cross-country could carry?) such battery packs for my bicycle, would you do another such conversion? Great conversion! I want to do the same thing, but I'm in Orlando, Florida. ![]()
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