DAND214
10 MW
What the hell are you doing, Supplying the whole block! ?Those like me with $428 electric bill mabye look for cheapest way out
I get upset when my bill is over 100 except in the summer.
Dan
What the hell are you doing, Supplying the whole block! ?Those like me with $428 electric bill mabye look for cheapest way out
What the hell are you doing, Supplying the whole block! ?
I get upset when my bill is over 100 except in the summer.
Did you read the Dodge 48v hybrid? It's interesting. Mount the FX inline with the alternator and a good cog belt and you have assist. Might not be great but it could work. It's done a lot more exotic than what I said.
210 foot pounds of motor torque through a 4:1 transmission ratio X a 3:1 differential would mean 2520 foot pounds of torque at the wheels. (in low gear)latecurtis said:The stock PT cruiser motor will make about 210 foot pounds of torque so 400 foot pounds at the rear wheels should actually smoke the tires and make over 100 mph easily without the front motor.
210 foot pounds of motor torque through a 4:1 transmission ratio X a 3:1 differential would mean 2520 foot pounds of torque at the wheels. (in low gear)
I suppose the other factor is that if you have two motors with 400 foot pounds of torque each, then you've got 800 foot pounds of total torque.
Why are you mounting the motor on the wimpass rack when it will fit, oh so much better, down on the frame?
Sonas are long gone, Samsungs are long gone, you gotta jump on these great deals when they show up!
Sold out, in hours!latecurtis said:Sonas are long gone, Samsungs are long gone, you gotta jump on these great deals when they show up!
https://www.ebay.com/itm/LG-18650-LITHIUM-ION-36V-4-4AH-BATTERY-EBIKE-VAPE-POWERWALL-EV-20-CELLS-WITH-BMS/173120557739?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D44039%26meid%3D70a19abdf7f447f7aba1ad89c469d349%26pid%3D100005%26rk%3D6%26rkt%3D6%26sd%3D253363000089%26itm%3D173120557739&_trksid=p2047675.c100005.m1851
$10 more but also 0.4 Ah more. Still worth it I guess if 400 cycles. I would like to get two next month mabye.
latecurtis said:Sonas are long gone, Samsungs are long gone, you gotta jump on these great deals when they show up!
https://www.ebay.com/itm/LG-18650-LITHIUM-ION-36V-4-4AH-BATTERY-EBIKE-VAPE-POWERWALL-EV-20-CELLS-WITH-BMS/173120557739?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D44039%26meid%3D70a19abdf7f447f7aba1ad89c469d349%26pid%3D100005%26rk%3D6%26rkt%3D6%26sd%3D253363000089%26itm%3D173120557739&_trksid=p2047675.c100005.m1851
$10 more but also 0.4 Ah more. Still worth it I guess if 400 cycles. I would like to get two next month mabye.
I also would like a hub motor which will handle 72 volts and go over 40 mph but that might be wishful thinking. Thanks for posting.
LC out.
Give up on the 26650 LiFePo cells. It takes more cells and much bigger size. If you do follow that way YOU will need a BMS.latecurtis said:As the Hub Motor Turns and the LiPo Fire Burns. Sona 36 volt pack.
I went downtown with the Currie last night and ran the Sona packs and walked up the small hills on the way back like I did on the first run. Voltage on return was up from 35V on the first run to 36.5 volts for the second run.
The trips were about the same 10 mph average and 3.5 miles. The batteries are in parallel for 8 Ah. Basically they have about the same capacity as the old 8.0 - Lipo pack I have not run in awhile. This proves that testing and running any battery will give the true capacity of any battery.
Basically three 10 Ah SLAs are capable of making the same trip when new many times. Perhaphs 50 to 80 times but mabye not 100 times. We are talking about 3.5 miles on the flat. I walk up hills. However a 6S - 22V 8.0 LiPo pack will do the trip about 200 to 250 times before it slows down. Two Sona packs might do the trip 300 to 400 times hopefully. If I want to go up the hills instead of walk it would take three Sona packs to do the full 3.8 miles.
If you round that off it takes 12 Ah to travel six miles with approx. 3/4 mile of hills NOT of steep grade. That really is not that good. With no hills three batteries may do 5 miles at 10 mph. Maby 15 mph but could fail at full throttle or 20+ mph. I am not sure but if the two I have can do 3.5 miles like 400 times then I got my money's worth. I have no way of knowing so I might order two more and run all four togeather.
I believe DA is running the Samsung 4.4 Ah packs and four in parallel is giving him 17.6 Ah. I will only see 16 Ah with four packs but would be able to go 15 to 23 mph for four miles with four packs. Basically I believe I am really close in stating that each 4 Ah pack could do 1 mile at full throttle and 2 miles at 10 mph. Therefore four packs should work for approx. 8 miles on flat ground but less than two if the hills are really steep where the bike slows to 5 mph. What I have learned is unless you have a large capacity pack like 30+ Ah it is better to simply walk up hills and get a little cardio. exercise and extend battery life by a lot.
Also there is no way in a million years that one 4 Ah Sona or 4.4 Ah Samsung pack will equel three 10 Ah SLAs. Three 10 Ah SLAs could do six or 7 miles on the flat and about 3 miles up moderate hills or full throttle on flat ground. However SLAs can only do that for 50 to 100 cycles and they are done so Total watt hours per battery counting maximum charging cycles the Sona 36 volt pack will be the better deal as they are a lot lighter and 300 to 400 cycles vs 50 to 100.
Now that that is cleared up I will probably get two more of the Sona packs for short trips like if I run two downtown I can run the other two to Wall Mart when I return or run them togeather for up to 7 miles if I walk up hills but for any serious distance the 26650 cells are better if building a 54 volt pack for greater than 10 miles but less than 15 miles at full throttle or 30+ mph and up to 50 miles at 10 mph on flat walking up hills.
Since I rarly go that far I see no reason to need a complicated BMS. It would be easier to simply check the cells and snap them togeather if I can find a kit for it. I can test each cell after I bulk charge them. four rows of 15 - 26650 cells in series parallel for run and for bulk charging I can use the 400 watt Megacharger for six rows of six and the 200 watt Skycharger for four rows of six parallel charge.
My only question is if anyone who reads this were to build a pack out of 26650 cells and were to order a box of 60 cells what name brand would you trust for a 4 Ah capacity rating per cell ? I see a lot of 18650 cells being tested by Richard Loyd and others but no 26650 cells. I also do not see many snap togeather kits for the 26650 cells.
I am more concerened with building a custom 54 volt 16 Ah pack out of 26650 packs then a 20" or ANY inch electric bike. Also the 54 volt pack is not a need for speed thing even though it will go faster than the 36 volt packs in parallel. However two or four 36 volt packs in parallel series for 72 volts will smoke the 54 volt pack. I am just not sure what motor to use. I do know that there is no such thing as a 72 volt brushed motor controller. Only way I am going 40 mph is with a 48 volt 1,500 watt hub motor capable of 72 volts and 2,250 watts.
Please let me know about the 26650 cells you would use if you were building a large capicity 54 volt pack. Thanks.
LC out
Chain must not be tight but just a little slack in order to be efficient at all, with those big sprockets you are running.
What does that say about you, since you've destroyed so many Lipos?latecurtis said:The variable controllers without any LVC protection run 6S LiPo. Any knowledgable e bike rider should know the capacity of the batteries they use. LiPo alarms and such are for dummys. :lol: :lol:
Sadly, you have never even figured out at what voltage your batteries are empty!latecurtis said:I only screwed up a few times when running LiPo hundreds of times. Tonight was not one. pack voltade was greater than 3.7 on all six when switching to the 36V packs downtown. Nothing is charging and not going anywhere tommorow. Getting drunk. . If you click on the picture it will get larger. 22V - 6S pack on seat and SONA packs in frame.
My most impressive, recent, upgrade was over volting (24V≫37V) my eZip (Snow Beast) then gearing it down (20T≫22T) for a 700w+ 20mph+.latecurtis said:For around town 6S Lipo will work for ALL my motors. The smallest motor I run is the 500 24V unite with the 800 watt 36~V unite on front. dual 500 controllers. Gearing is 1,000 watt total and 20 mph. Then the 750 watt gear reduction chain drive on the Currie. The 800 watt 20" (currently running ) then the 1,000 watt unite currently NOT hooked up and the 48V 1,000 watt hub motor Sunder sent( currently not running ) five e bikes total. Three running.