stonezone

will this same controller (KDS 48200) work on the 20" oset? (i've emailed them and asked a few other people on ES similar questions but just found this tread).

Thanks Gwhy,...I meant to tell you that I ordered this a while back.

got everything up and running. bike is definitely snappier with probably 20% more power and 2.5x the range. Also saving 17lbs from the stock battery. couple of questions: 1- has anyone changed the throttle? my response is lacking and it seems to possibly be capping out on the max speed. 2- what is a good voltage monitor to use for 12s monitoring? i've only been seeing 8s max ones from HK. I'm currently using 2 cheapo ones that are connect to each main plug on my balance harness and i'm also carrying my multimeter in a backpack to check it all occasionally. here's some pics... and a huge thanks to ghy and everyone else on this and endless-sphere forums. What a cool community and fun projects everyone is working on!

OK, about to drop the hammer and buy 8 of the Turnigy batteries from HK linked above. I was thinking 4 in parallel and then a series of 2 to get max range. The only thing i'm not sure of and looking for now is the best charger(s) for the job. From what I understand, I would charge each P as a 4s 20000mAh battery? Could I charge the whole thing with this charger: http://www.hobbyking.com/hobbyking/store/%5F%5F9005%5F%5FiCharger%5F208B%5F350W%5F8s%5FBalance%5FCharger.html If that's not a good solution, any suggestions on a charger that can charge 4xTurnigy 5000mAh 6S 20C at once? (I'm willing to spend a bit extra to get a good charger initially) I know i have to be very careful with balancing (especially prior to Parallel) and I have some ammo boxes for storage, etc....I've read the fire thread on E-S Thanks for all the help! SZ

In regards to the earthX, I could build a cheaper, longer lasting and more powerful custom lipo setup, correct? How much of an advantage would I get from mounting a brushless motor (with esc, etc) over the stock motor. For example i got this response from Cyclone E Bikes: "OSET bike made the frame in our frame factory now. The motor mount is different, you can try our 840-2000W motor no gear box motor with 48V 100A kelly controller"

Also i just stumbled across this article on modifying a Stealth Bomber in a similar way to what we're all looking to do. Well worth the read: http://www.electricbike.com/stealth-hot-rod/

I just found this site http://www.lifepo4.cc someone on another forum suggested that he's saving up for the 72V 40AH LiFePO4 Battery Pack. How would that work with the 48v motor? They are all a little spendy but would one of these batteries be a good options as an all in one package. Also, thoughts on replacing the motor with something brushless? I'd have to sell my GF on the street corner and other crap but seems like a simpler solution. Weight is not an issue....

that explained it perfectly. thanks!

I'm sort of figuring this out, but I'm confused on what the mAh on the 6s1p batteries would need to be to equal 10ah and also end up with roughly 48v? Also, you're saying just double the "4x6s1p" pack and run 8 batteries to get the longest range? ​I'm looking at these "Turnigy 5000mAh 6S 20C Lipo Pack" https://www.hobbyking.com/hobbyking/store/__9176__Turnigy_5000mAh_6S_20C_Lipo_Pack.html (although 8 of those is $400 not including charger and all cables) so 5000mAh x 20C = 100000mAh/1000 = 100amps (am I even close)? Is there a specific battery would you recommend for what i'm trying to do? Maybe I'll just start out with the 4 and then double it when i get additional funds. I'd love to buy you a few beers for taking all the time to explain this to all of us... any local bars that accept bitcoin? haha For anyone interested, I found another battery kit on ebay that should work for the 20" 20a 48v (pretty expensive with shipping though): http://www.ebay.com/itm/new-2014-48v-20ah-Third-generation-Lithium-ion-rechargealbe-Battery-ebike-power-/271414454854

and I'm also assuming I could get better performance out of my own build (and cost savings) than this kit that i just found: http://earthxmotorsports.com/shop/oset-4v-kit-duplicate/

48 (20" race model).

Haven't figured out what to do and have a few final questions before I jump in.... My end goal is to achieve the longest range with weight and power not really being a concern (I'd like to get 3 hours of mellow trail riding out of it if possible). Also to note, I'm an adult weighing in at around 185. Would I be able to use 3 Turnigy 5000mAh 6S 20C Lipo Packs in line (although the voltage would be upwards of 66) and just tune down the power settings? Or would I be better off with more 3s batteries? Does discharge rate affect battery life? There are also some 10s options with affordable chargers but they are 37v each: http://www.hobbyking.com/hobbyking/store/__14617__turnigy_nano_tech_5000mah_10s_45_90c_lipo_pack.html I'd consider having a second pack with some sort of switch so when the first pack nears discharge i could switch to the second charged pack. Oh yeah, I also found this on ebay for the 20" if anyone is interested: http://www.ebay.co.uk/itm/48V-10Ah-Ebike-Oset-20-Lithium-Battery-Pack-Electric-Bike-Motorcycle-5A-Charger-/131123328987?pt=UK_Motorcycle_Parts_13&hash=item1e878f37db (I'd prefer to learn the technology on my own and think I could get better performance per $$$ that way) Thanks to everyone who contributed to this thread. What a great community. SZ

me and a few friends just got the 20" race and def want to upgrade to LIPOs... has anyone worked out the specs for running the larger bike/voltage? We are def interested in extending range and power and not so much worried about weight. Also interested in the option of mounting a good DH rear shock in place of the stock. Oh and finally a suggestion on where to get some good bar risers (we are all adults on these little babies and love them). SZ

awesome, i'm there! thanks for all the replies!

Im in the area and would love to go check out an event.... anyone know what the turnout will be like? I've never been to an actual trials comp so I'd be pretty keen to attend (unless it's a ghost town). thanks! SZ

my bad... its a 12 raga. super nice though... way too nice for me.

good tips. thanks!